LRP Manual rev. 2-0-2

LRP® - Linear Rod Pump – Mechanical Manual

Contact Information: UNICO: 262-886-5678 High Production Technology : 419-592-0050 Printed on 11/14/2011 Page 1 of 32

Linear Rod Pump Systems

MECHANICAL INSTALLATION AND MAINTENANCE MANUAL

Manual # 2.0.2



TECHNICAL SPECS:.......................................................................................................................3

SAFETY INFORMATION ...............................................................................................................5

OVERVIEW.........................................................................................................................................5

CONVENTIONS USED.........................................................................................................................6

GENERAL PRECAUTIONS...................................................................................................................6

INSTALLATION PRECAUTIONS...........................................................................................................7 MAINTENANCE PRECAUTIONS ..........................................................................................................8

SAFE SERVICE PRACTICES................................................................................................................9

2 INSTALLATION ..........................................................................................................................12

2.1 OVERVIEW................................................................................................................................12

2.2 INSTALLATION GUIDELINES ....................................................................................................12 2.2.1 Long Term Storage...........................................................................................................12

2.2.2 Site Planning ....................................................................................................................12

2.2.2.1 Stand..........................................................................................................................12

2.3 INSTALLATION..........................................................................................................................13

2.3.1 Electrical Connections .....................................................................................................13 2.3.2 Unit Height:......................................................................................................................13

2.3.3 Lifting: ..............................................................................................................................14

2.3.4 Brake information: ...........................................................................................................15

2.3.5 Proximity switch installation:..........................................................................................16

2.3.6 Installing the LRP® unit on the Well Head....................................................................17 2.3.6.1 Installing with polished rod in LRP® unit.............................................................17

2.3.6.2 Install over the polished rod. ...................................................................................18

2.3.7 Fill the unit with oil..........................................................................................................19

2.3.7.1 Base fill port. .............................................................................................................19

2.3.7.2 Gearbox: ....................................................................................................................20 2.3.8 Optional rod rotator: ........................................................................................................22

2.3.9 Top cover installation:......................................................................................................23

2.3.10 Post Installation Checks: ...............................................................................................24

3 MAINTENANCE: .........................................................................................................................25

3.1 OIL CHANGE:...........................................................................................................................25 3.1.1 Gearbox oil: ......................................................................................................................25

3.1.2 Rack and Pinion oil..........................................................................................................25

3.1.2 Draining oil from the LRP® unit. ...................................................................................27

3.3 BOLT TORQUE: ........................................................................................................................31

3.4 SEALING MATING SURFACES OIL TIGHT:.................................................................................31 3.5 PREVENTATIVE MAINTENANCE SCHEDULE:...........................................................................32

3.6 SPARE / REPLACEMENT PARTS:...............................................................................................32



Technical Specs: (Veri fy this info with the tag on the machine)

Model #: ___________________________________

Serial #: ____________________________________

Gear ratio: __________________________________

Actual brake engagement RPM:_________________

Lifting capacity: 30,000 lbs

Linear Lead (one turn of the pinion): 18.8495 in/rev

Max torque setting (gearbox output torque): 90,000 in-lbs

Brake: Bolt torque: 75 ft-lbs (8 places)

Type of oil: Mobilgear 600xp 220 (or equivalent)

Rated Stroke: (inches) 86 100 120

Actual Stroke: (inches) 91 105 125

Rack and guide weight: (lbs) 1260 1395 1588

LRP weight without oil: (lbs) 5250 5750 6250

Unit Height: (inches) 130 144.5 1588

Over all height above stand: (inches) 270.75 299.5 339.5

Overall height above stand with rod rotator: (inches) 275.5 304.25 344.25

Gearbox oil capacity: (gal ) 10.3 10.3 10.3

Base oil capacity: (gal) 20 22.5 26.1

Model number example:

Tag location

at the base

of the LRP.

Customer information:

Well location: ______________________________________________________ Well No.: _________________________________________________________

Install Date: _______________________________________________________ Notes: __________________________________________________________ _______________________________________________________________

_______________________________________________________________

L=LRP

TORQUE VALUE:

RATIO:

MOTOR FRAME:

STROKE:

OPTIONS:

RR=ROD ROTATOR

REVISION NUMBER:



Top cover

Gearbox

Brake

Pinion housing

Base

Stand

Motor

Guide roller

Pinion

Rack

Rod rotator option:



Safety Information

Overview

This section states important safety information that must be followed when setting up, operating,

and troubleshooting this equipment. Study this information carefully before working with this equipment, as failure to follow these instructions may lead to personal injury or death, or damage to

the unit, drive, motor, and/or driven equipment. Installation and repair procedures require

specialized skills with mechanical pumping systems. Any person that installs or repairs this unit

must have these specialized skills to ensure that it is safe to operate. Contact the Unico, Inc. service

department for repairs or any questions you may have about the safe installation and operation of this system. The precaution statements are general guidelines for the safe use and operation of this

LRP® system. It is not possible to list all unsafe conditions. Therefore if you use a procedure that is

not recommended in this manual, you must determine if it is safe for the operator and all personnel

in the proximity to the unit. If there is any question of the safety of a procedure, please contact

Unico, Inc before starting.

This equipment contains high voltages. Electrical shock can cause serious or fatal injury. Only

qualified personnel should attempt startup or troubleshoot this equipment. This equipment has

moving parts. Improper use can cause serious or fatal injury. Only qualified personnel should

attempt startup or troubleshooting of this equipment.

• System documentation must be available to anyone that operates this equipment at all times.

• Keep non-qualified personnel at a safe distance from this equipment.

• Only qualified personnel familiar with the safe installation, operation and maintenance of this device should attempt startup or operating procedures.

• Always disconnect power before making or removing any connections.

• Always ensure any connected equipment capable of falling is safely secured by approved methods prior to working on this unit.

When your LRP® unit is delivered, it becomes the responsibility of the owner/operator of the unit

to provide safe conditions and operation of the equipment. Some responsibilities include (but are

not limited to) the following:

1. It is the responsibility of the owner/operator of this equipment to ensure that it is correctly

and safely installed.

2. It is the responsibility of the owner/operator of this equipment to ensure that it, when

installed fully, complies with all federal, state and local codes. 3. It is the responsibility of the owner/operator of this equipment to ensure that any person

operating it has been properly trained.

4. It is the responsibility of the owner/operator of this equipment to ensure that any person

operating it has access to all manuals and information required for its safe use and operation.

5. It is the responsibility of the owner/operator of this equipment to ensure that it is properly maintained and safety inspected at regular scheduled intervals.

6. It is the responsibility of the owner/operator of this equipment to ensure that any person who

has not been trained on the safe use of this equipment does not have access to it.



Conventions Used

The following notation convention is used throughout this manual to indicate information important

to personal safety or machine hazards.

Identifies information about practices or circumstances that can lead to personal injury or

death, property damage, or economic loss.

General Precautions

Never operate this unit in a manner other than as described in this manual. Operation in any manner not described in this manual should be considered unsafe and should not be

attempted. Never start the equipment unless you have first verified that the installation and

operation are as described in this manual.

Be sure that you are completely familiar with the safe operation of this equipment. This

equipment may be connected to other moving parts. Improper use can cause serious or fatal

injury.

Some parts of this unit move during operation. Rotating parts can present extreme danger if

clothing or body extremities are caught by the rotating part and can cause serious or fatal

injury. Never touch a part of the equipment until all moving parts are completely stopped.

Also, all electrical power must be removed to prevent accidental movement during servicing.

Be sure that you understand how to stop the unit quickly in case of an emergency situation.

Become familiar with the controls and safety systems provided with this equipment.

Improper operation may cause violent motion of connected equipment. Be certain that

unexpected movement will not cause injury to personnel or damage to equipment.

Never permit anyone to operate the equipment without proper instructions. Be sure to keep a

copy of this manual with the unit so that all users can be properly informed of its safe

operation.

Never allow children or pets to be in the area where the equipment is running. The unit may

cause injury or death.



Never operate the equipment unless all guards, covers, shields and other safety items are

properly installed.

Do not put hands, feet, tools clothing or other objects near moving parts. Moving parts cause

extremely dangerous situations because they can catch loose clothing or extremities and

cause serious or fatal injury.

When operating this equipment remain alert at all times. Never operate machinery when

physically or mentally fatigued, or while under the influence of alcohol, drugs or

medication.

High voltage is present whenever the equipment is running. Electrical shock can cause

serious or fatal injury. Never operate electrical equipment while standing in water, on wet

ground or with wet hands, feet or shoes or while barefoot.

Installation Precautions

Installation and repair procedures requires specialized skills with electrical equipment and

mechanical pumping systems. Any person that installs or performs repairs must have these

specialized skills to ensure that the unit is safe to operate. Contact Unico, Inc. for installation

or repairs.

Be sure all wiring complies with the National Electrical Code (NEC) and all regional and

local codes or CE Compliance. Improper wiring may cause a hazardous condition and

exposure to electrical hazards can cause serious injury or death.

Be sure the system is properly grounded before applying power. Do not apply AC power

before you ensure that grounds are connected. Electrical shock can cause serious or fatal

injury. NEC requires that the frame and exposed conductive surfaces (metal parts) be connected to an approved earth ground. Local codes may also require proper grounding of

equipment systems.

Place protective covers over all moving parts such as motor shaft and fan, gearing, etc. Moving parts cause extremely dangerous situations because they can catch loose clothing or

extremities and cause serious or fatal injury.



Unauthorized modification of equipment may make the unit unsafe for operation or may

impair the operation of the unit. Never start a unit that has been modified or tampered with. Be sure that all covers and guards are properly installed and that the unit is safe before

starting. If you are unsure, contact Unico, Inc.

When moving the equipment, use reasonable caution. Be careful where you place fingers and toes to prevent injury. Never try to lift equipment without an appropriate hoist or lifting

means, as it is heavy and bodily injury may result.

Circuit overload protection must be provided in accordance with the National Electrical Code and local regulations.

Have electrical circuits and wiring installed and checked by licensed electrician or qualified

technician. Electrical shock can cause serious or fatal injury.

Maintenance Precautions

Disconnect all electrical power before servicing the equipment. Electrical shock can cause

serious or fatal injury. Always treat electrical circuits as if they are energized.

Before cleaning, inspecting, repairing or performing any maintenance to the equipment, always be sure the unit has stopped and that all moving parts have also stopped. After

stopping, certain components may retain significant potential energy due to gravity. Ensure

all loads are properly secured to prevent accidental motion.

Inspect all wiring frequently and replace any damaged, broken or frayed wiring or wires

with damaged insulation immediately. Electrical shock can cause serious or fatal injury.

Disconnect all electrical wires and load devices from equipment power outlets before servicing the equipment. Electrical shock can cause serious or fatal injury. Always treat

electrical circuits as if they are energized.

Use only original equipment or authorized replacement parts. Using the correct parts will assure continued safe operation as designed.



Do not lift the equipment from the motor or gearbox lifting points. These points are not

designed for the weight or lifting angle needed for the LRP® unit. Equipment Control Precautions

An incorrectly installed or operated drive can result in damage to the equipment it controls.

Make certain installation and operating specifications are followed.

Control inputs do not generate an emergency stop of the motor and do not remove electrical

power that can cause hazardous conditions. Regardless of the operating state, the drive’s

motor output terminals may be at dangerous voltage levels whenever input power is applied and the bus is charged.

The LRP® unit may start automatically whenever power is applied or after a fault trip if the

auto restart has been enabled. The restart function must not be enabled when hazardous conditions might arise from such action.

Safe Service Practices

Follow industry-recognized safety procedures:

• Use only one hand to hold test equipment probes

• Wear approved eye protection

• Stand on insulated material • Use an isolated oscilloscope

• Keep unnecessary personnel out of the work area

• Never leave a drive cabinet open or unattended

• Never work alone



1 About this Manual

1.1 Overview

This chapter describes the contents and intended audience of this document.

1.2 Contents The manual provides the instructions and technical information necessary to complete the

mechanical installation of the LRP® unit.

1.2.1 What’s Covered

• Safety Information, discusses safety hazards and precautions important to anyone working with this equipment.

• Chapter 1, About this Manual, Overview of this document.

• Chapter 2, Installation, describes the installation of the Unico LRP® system.

• Chapter 3, Maintenance, describes the maintenance of the Unico LRP® system.

1.2.2 What’s Not Covered

This manual does not address basic hardware and firmware aspects of the drive. These

topics are covered in the drive installation and firmware instruction manuals. Please refer to

those documents for:

• Unpacking and receiving instructions • Hardware features and specifications

• Electrical installation instructions

• Drive troubleshooting, maintenance, and spare parts

• Detail listing of basic drive parameters

• Drive setup and auto tuning procedures • Interface setup and diagnostic utilities



1.3 Intended Audience

This manual is intended for anyone who will be installing, operating, and servicing the LRP® system. Installation should be performed by qualified personnel to ensure that correct

practices and applicable codes are applied. Start-up and operation should be performed by

personnel familiar with both the drive and the machinery or equipment interfaced.

The audience is expected to have a basic knowledge of physical and electrical fundamentals,

electrical wiring practices and components, and electrical schematics. No prior experience with the drive is presumed or required.

Follow instructions

You can prevent injury and damage to the drive or equipment by carefully following the

procedures outlined in this manual.

Follow regulations

All electrical work should conform to the National Electrical Code as well as all state and

local government regulations. Please familiarize yourself with these regulations.

Read all manuals first

Read this manual as well as the Linear Rod Pump Operating Instruction manual and the

drive software application and installation and firmware instruction manuals entirely before

installing the drive. Consult with the factory if unsure on any topic before proceeding.

1.4 Intended Application

Unico LRP® systems are intended for vertical rod pump applications. This unit must be

operated in the manner prescribed by this document. Uses outside those prescribed shall

invalidate the manufacturer’s warranty.



2 Installation

2.1 Overview

These operating instructions are intended to help you install and operate the LRP® unit. For

trouble free service, proper installation and operation are essential. Additionally, these

instructions contain important recommendations on maintenance. Before shipment, every LRP® unit is tested, checked and properly packed. However, please inspect the unit immediately upon

arrival for shortage or transit damage. Note the damage or shortage on the freight bill of lading

and file a claim with the carrier. Also, notify UNICO of the shortage or damage. In addition to

these instructions, read and follow the gearbox manufacturer’s operating instructions provided

with the LRP®’s manual.

2.2 Installation Guidelines

The procedures presented in this manual are suggestions and it is the responsibility of the

Owner/Operator to arrange for these procedures to be performed by licensed contractors

according to all applicable codes including local codes for your Municipality/City/County and State/Province.

• National Fire Protection Association

o No. 30 – Storage, Handling and Use of Flammable Liquids.

• Local Codes applicable to mechanical equipment installation. See your local building

inspector.

NFPA (National Fire Protection Association) (617) 770-3000 (includes NEC), 1 Batterymarch Park, Quincy, MA 02169-7471 USA

2.2.1 Long Term Storage

If the unit is not installed immediately, it should be stored in a dry, protected area. Units which

are used for standby service should be stored sealed.

2.2.2 Site Planning

This equipment system is enclosed and is designed for outdoor use. The following sections

provide guidelines for successful installations.

2.2.2.1 Stand

• The unit is intended for mounting on a separate mounting stand that is supported by a casing or

tubing flange.

• It is the user’s responsibility to ensure there is adequate integrity of the well completion for the

gas and fluid flow when the base is installed. • Ensure the base is concentric and perpendicular to the polished rod. Appropriate shims or

adjustments to the base and mounting stand may be necessary.



2.3 Installation

The equipment is completely assembled, tested and adjusted at the factory before it is shipped.

The procedures presented in this manual are suggestions and it is the responsibility of the Owner/Operator to arrange for these procedures to be performed by licensed contractors

according to all applicable codes including local codes for your Municipality/City/County and

State/Province. External connections required at the time of installation are:

2.3.1 Electrical Connections Consult supplied electrical drawings and/or drive hardware and software manuals for specific

wiring instructions.

2.3.2 Unit Height:

Note:

Use this to determine the height of the polished rod. This dimension can be found in the technical

specs of this manual. The polished rod should not be more than 45” above this dimension. There is

45” between the rod clamp surface and the inside of the top cover.

Unit height is

from the top of

the stand to the

rod clamp surface.



2.3.3 Lifting: When lift or hoist equipment is used to lift the equipment and move it to position, be careful not

to contact overhead wires or other obstacles. The equipment can weigh as much as 6,500 lbs.

Ensure lift or hoist equipment has appropriate tires for the terrain to avoid becoming stuck or tipping over. For the machine weight see the technical specs in this manual or the machine tag

on the base of the LRP® unit.

Below shows 2 lifting eyes on top of the main housing.

After removing the bracket holding the rack in place, the rack is free to move (bracket not

shown). This means it can fall out if the unit is tipped so that the top is lower than the

bottom mounting plate.

2 lifting eyes located on the top of the main housing. Use

both to lift the unit. Eyes are

located so the unit will hang

vertically.



2.3.4 Brake information: This is a centrifugal brake. The brake will only engage when the LRP® system is traveling down

and exceeds a motor rpm around 2,500rpm. This brake will only engage in the case of a failure with

the drive safe stop operation. The brake will reset automatically when the unit starts to move

upward.

The eight bolts located around the brake are what define the brake torque. Remove the brake cover.

Verify the Torque on the 8 nuts before installing the LRP® unit. The torque specs can be found on

page 1 or on the white tag on the LRP® unit base for the correct bolt torque.

Check torque of all 8 bolts per tagged

requirement.



2.3.5 Proximity switch installation:

Proximity switch

location between the

housing and the gearbox.

The slot for the Proximity

switch starts 12 ½” from max

top and bottom of stroke, 10” from top and bottom of normal

stroke. (2.5” over travel in both

directions) -The proximity switch will be made in the middle of the stroke but not at the

end of stroke.

With the rack in the lowered or parked position, thread the

proximity switch in until it bottoms

out on this surface. Then back it out 5/8” and put a lock nut on it . This

will space it off the guide 1/8”.

**Put thread sealer on prox to

protect against leaks.



2.3.6 Installing the LRP® unit on the Well Head.

Before installing the LRP® unit, verify that the stand is level. The mounting hardware between the

stand and the base are supplied with the machine.

There are 2 ways to install the LRP® unit on the well.

2.3.6.1 Installing with polished rod in LRP® unit. Insert the polished rod into the LRP® unit prior to lifting. Clamp the rod so that it does not fall

out. Then lift the LRP® unit over the well and connect the polished rod in the well to the

polished rod in the LRP® unit. A coupling can then be used between the 2 polished rods. The coupling must be less than 2.5” outer diameter so that it can fit up into the bottom of the LRP®

unit.

Rod Clamp.

Polished rod.

Polished rod.



2.3.6.2 Install over the polished rod. The 2

nd way is to install the LRP® unit over the polished rod. This requires lifting the unit

much higher.

Top plate is chamfered on the inside.



Oil full sight

glass when rack

is in the lowered or parked

position.

2.3.7 Fill the unit with oil.

The unit is shipped WITHOUT oil. The unit must be filled at installation.

The LRP® unit has 2 oil reservoirs.

See page #1 or white tag on the base of the LRP® unit for oil specs and quantity.

2.3.7.1 Base fill port. This is the lubrication for the rack, pinions, and bearings.

While the LRP® unit is running verify the reticulating pump is pumping fluid. To do this, simply

loosen the fitting on the output side of the pump. Oil should steadily run out around the fitting. The

pump will pump in both direction (upstroke and down stroke).

Oil fill port for

base

Check for oil flow at this fitting. The oil is

under very low pressure.

Prime the pump in this location. Remove the

fitting from the bottom of the pump. Pull the tube

away and fill the trap in the tube with oil.

Reconnect the bottom tube and fitting. Remove the fitting on the top of the pump and add some oil

into the top of the pump. Reconnect the tube and

fitting. Leave the fitting loose to check for oil. Run

the LRP. Oil should steadily run out around the

fitting.



2.3.7.2 Gearbox: There are 2 different gearbox suppliers used on the LRP® units. Verify which gearbox is on your

unit. This may be supplied with oil from the factory and must be checked.

Below is the fill ports and site glass for the Bonfiglioli Gearbox.

Fill port for

gearbox.

Sight glass for gearbox

fill level.

Bonfiglioli name on the

side of the gearbox.



Below are the fill ports for the SEW gearboxes.



2.3.8 Optional rod rotator: The rod rotator turns the rod string a set amount every stroke. After the LRP® unit is

installed on the well head set the rotator on top of the plate in the machined pocket. The rod will go

thought the center and the rod clamp will set on top of the rotator. Use the lower 2 roller holes to change the amount the rotator moves.

It is recommended that you run the LRP® unit at this point with the top cover off and watch

the rod rotator cycle. If every thing is cycling good then put the top cover on.

Rod clamp sits on top of

rod rotator. Rod clamp

not shown.

Rod rotator sits in the pocket in top plate.

Roller can be used in either of the lower 2 holes. This will change the

amount of rotation the rotator

moves each stroke. Be careful not

to drop parts into the gearing if

changing position of the roller.

Fill with light oil to bottom

of plug hole. (SAE 20

recommended for the model

T-252)



2.3.9 Top cover installation:

The mounting hardware is supplied with the machine.

Seal the top cover to the housing with Loctite

gasket sealant number 2

or equivalent. See

section 3.4.



2.3.10 Post Installation Checks:

When the initial installation is complete, the following checks must be performed before starting the unit. These checks are not required before each start, only after the initial installation.

1. Verify unit oil levels are full. Base, Gearbox, and Rod Rotator.

2. Verify that the brake bolts were set to the correct torque. Section 2.3.4 and 3.2.

3. Ensure all covers are in place and be sure no hands are inside the equipment when it starts.

4. With the unit running, several checks must be made:

a. Verify there are no oil leaks. If a leak is detected, immediately stop the unit (move

the equipment switch to the “Off” position) and repair the leak before proceeding.

b. Verify that the operation is smooth. If vibrations or other sources of noise exist,

immediately stop the unit (move the Equipment switch to the “Off” position) and repair/adjust before proceeding.

5. After the operation checks are made, stop the unit (move the Equipment switch to the “Off”

position). Re-check unit oil levels.

6. Close all covers. The post mechanical installation checks are now complete.



3 Maintenance: Ensure the machine is properly Locked Out prior to any maintenance.

3.1 Oil Change: Find the oil type and quantity on page #1 of this manual or the white machine tag at the base of the

LRP® unit.

See Section 1.6 for fill instructions.

3.1.1 Gearbox oil: Bellow is a recommended oil change interval based on temperature for the gearbox.

Mobilgear 600XP 220 is a mineral based oil.

3.1.2 Rack and Pinion oil Change every 4,000hours or 6 months.

There are 2 methods of lubrication on the LRP® system rack, pinions and bearings.

1. Oil bath. The rack sits in a bath of oil when in the down position. During the up stoke oil is

transferred to the pinions and splashed on the bearings.

2. Lubrication pump. This pump pumps oil in both directions. It is driven off the splitter gear. It is rotating 4.6 times as fast as the pinion. This pump sends oil into the slitter gear side of the pinion

housing to lubricate the outer bearing. The pinion housing is divided in 2 areas, the splitter gear side

and the rack side. The splitter gear side is a small reservoir. As oil is pumped into this reservoir the

oil reaches the center bearings and drains through them back into the base.



Showing the internal

lubrication lines.

Splitter gear side

of the housing.

Rack and Pinion side

of the housing.



3.1.2 Draining oil from the LRP® unit.

There are 2 locations to drain oil from the base of the LRP unit. Both of these locations need to be

drained when changing oil in the base.

There are two drain

locations for the base.



3.2 Brake: This Brake is only used in the event the drive can not park the rack on bottom because of an

unforeseen failure in the drive system.

How does it work?

The brake is a centrifugal mechanical brake. This brake will only engage in one direction (down

stroke). Once the brake hub exceeds a set rpm the centrifugal force expands and engages with the

brake disc. The brake disc is sandwiched between brake pads. The amount of stopping force the

brake has is determined by the torque on the 8 bolts holding the brake assembly together. The more torque the more stopping power.

Do not operate the LRP® system with out the brake installed and properly set.

Because the brake requires a certain rpm before it engages there is the potential for the LRP® system to bottom out before the brake can set. Example: If power is lost only a few inches from

bottom. In this case there is a bumper in the base of the LRP® unit to absorb this impact.

Resetting the brake once engaged. The brake will only engage on the down stroke. To release the

brake simply stroke the unit up a few inches and the brake will retract. You are now ready to run. The LRP® system start up routine will automatically do this for you automatically.

Remove the brake cover:

The cover can be removed from the brake as shown below. Remove 5 bolts then slide cover

off. The cover should remain on the machine to keep out the weather and debris after maintenance is completed.



Engagement rpm:

The required rpm is determined by the max motor rpm (+/-10%) / the gearbox ratio.

Example: 2500 motor rpm / 19.38 ratio = 127 rpm required at the brake. This rpm is then achieved by using springs to overcome the centrifugal force until that given

rpm. See chart for spring combinations. There is some variation from spring to spring so the

chart below is for the nominal. In the event you need the brake to engage sooner or later you

should consult the manufacturer.

Springs

Gearbox Brake OD Wire Ø: Length Spring rate:

Ratio: RPM Spring Locat ion: Total # of springs: in in in lbs/in

Z 9.7 250 Lee Spring #LE 067E 06 S A - C 4 0.5 0.067 2.5 12.21

A 12.6 200 McMaster Carr # 9432K91 A - C 4 0.5 0.063 2.5 10.05

B 19.4 125 McMaster Carr # 9065K375 A - B 4 0.5 0.063 2.75 7.99

C 29.1 90 McMaster Carr # 9065K375 A - B 2 0.5 0.063 2.75 7.99

D 35.8 70 McMaster Carr # 9065K375 A - B 1 0.5 0.063 2.75 7.99

Spring part number:

# of springs on post location



Brake torque:

The brake torque is set by the torque on the 8 nuts on the outside of the brake. The proper

brake torque can be found in the technical spec section or the white machine tag on base of the LRP® unit. You will need a 1 7/16" socket and a torque wrench. These nuts should be

checked periodically for the correct torque (every 6 months), or after every 10 brake

engagements.

There are 8 nuts (2 in each corner) on the brake that need to be checked. When tightening the nuts the first time around alternate sides when moving from nut to nut. After you have

tightened them all once then recheck all the nuts for torque again. Repeat this process until

the nuts do not move under the specified torque.



3.3 Bolt Torque:

Use the torque table below for all fasteners. Please see the brake section for the torque on the

brake nuts.

Minimum Tensile

Strength PSI

Nominal Dia.

and

Thread Pitch Dry Lubed Dry Lubed Dry Lubed

1/4-20 (101) (76) (143) (107) (168) (120)

3/8-16 (372) (276) 44 33 51 38

7/16-14 49 37 70 52 81 61

1/2-13 75 57 106 80 124 93

5/8-11 150 113 212 159 238 179

3/4-10 267 200 376 282 423 317

Lubed means cleaned dry bolts lubricated with a standard medium viscosity

machine oil. Lubricate all contact areas of the bolts and washers. Lubricating

the bolts is the suggested method.

Bolt Torque Specs in Foot Pounds or (Inch Pounds)

120,000 150,000

1/4-1/2" 180,000

5/8-1" 170,000

Cap Screws

Bolt Torque TableEstimated with clamp load as 75% of proof load

as specified in SAE J429 and ASME 574

Steel Grade

SAE 5 SAE 8 Socket Head

• Use Loctite #243 Blue Medium Strength thread locker on all fasteners.

3.4 Sealing mating surfaces oil tight:

• Use LOCTITE® Gasket Sealant #2 or equivalent to seal all mating surfaces oil tight.

LOCTITE® Gasket Sealant #2 is a black, viscous paste with a characteristic alcohol odor. It is a slow drying, flexible setting paste that changes to a pliable, non-hardening film through

solvent evaporation. It seals flanges, fittings, connections and flexible assemblies against

leakage. It increases the reliability of gasket seals.

DIRECTIONS FOR USE

1. Remove all previous material from mating surfaces. 2. For best results, clean and dry all surfaces with a residue-free solvent

3. Remove cap, puncture tube or cartridge seal and attach extension nozzle (i f provided). 4. When used as a gasket dressing, spread product with a spatula to a uniform film on one side of gasket

and then position it on the assembly. Coat the second side of gasket and re-assemble. Slower drying formula increases work time.

5. Assembly is operational after 4 hours, full cure is affected aft er 24 hours. For Cleanup

1. The product can be removed from metal surfaces with isopropyl alcohol. If the sealant has been dried for a long time or at high temperatures, cover the seal ant with alcohol and allow to soften overnight.

2. Clean hands with hand cleaners.



3.5 Preventative Maintenance schedule:

Weekly:

1. Visually check for oil leaks from sealed surfaces and fittings.

2. Visually check oil level at the sight glass in LRP® unit stand. 3. Perform general clean up of oil, grease, and dirt.

Six Months:

1. Change oil in LRP® unit base for rack and pinions.

a. See section 2.3.7 2. Change oil in Gearbox.

a. See section 2.3.7

3. Visual inspection of pinions, rack, and gears through housing inspection covers. Check for

excessive wear on gear teeth.

4. Check the brake bolt torque as described in section 2.3.4 and 3.2. a. During the brake inspection. Remove any debris from the brake. Look for worn,

broken or missing part.

5. Check and verify lubrication oil is be pumped. This will need to be checked as the unit is

running. See Section 2.3.7.

Yearly:

1. Remove the cam follower blocks one at a time to inspect the cam followers. There are 4

locations.

a. Reseal the mating surfaces when reassembling the blocks. See section 3.4

3.6 Spare / replacement parts: - A mechanical parts list was supplied with the LRP® unit please refer to it for and spare or

replacement parts. - When inquiring about spare parts please have the model and serial number of the LRP® unit.

These can be found on the white machine tag at the base of the LRP® unit.

Documents

LRP Manual rev. 2-0-2