s05 Boom b14nv

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B14 NV BOOM

Page 1

SANDVIK TAMROCK SECOMA S.A.S

19 avenue De Lattre-de-Tassigny - ZI

B.P. 46 - 69881 MEYZIEU Cedex

Tel : (33) 472 45 22 00 Fax : (33) 478 31 79 80

MAINTENANCE MANUAL

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B14 NV BOOM Page 2 B-05-07-2005 SR-MC-FL

1 PRELIMINARY REMARKS 5

1/1 SAFETY 5

1/2 ABOUT THIS BOOKLET 7

2 DESCRIPTION 8

2/1 EXPLANATION 8

2/2 FEATURES 8

2/3 MAIN COMPONENTS 9

3 MAINTENANCE OPERATIONS 10

3/1 FIRST ENTRY INTO SERVICE 10

3/2 OPERATIONS AT EACH SHIFT 10

3/3 50-HOURS OR WEEKLY OPERATIONS 10

3/4 200-HOURS OPERATIONS 11

3/5 1200-HOURS OR ANNUAL OPERATIONS 11

3/6 3600-HOURS OPERATIONS OVERALL INSPECTION AND RECONDITIONING 11

4 TIGHTENING TORQUES 12

5 LUBRICATION 13

5/1 GREASE POINTS 13

6 OPERATING METHODS 14

6/1 REMOVING AND REFITTING A EXPENDABLE PIN SET. 14

6/2 CHECKING CYLINDER EXPENDABLE PIN 15

6/3 REMOVING AND REFITTING A CYLINDER 16

6/4 REMOVING AND REFITTING A BOOM ASSEMBLY 16

6/5 REMOVING AND REFITTING ROTARY ACTUATOR 17

7 CHECK AND ADJUSTMENT 17

7/1 HOSE CONDITION CHECK 17

7/2 CHECK WELDING CONDITION USING CRACK DETECTOR PRODUCTS 17

7/3 CONTROL/ADJUSTMENT OF CLEARANCE BETWEEN ARMATURE AND EXTENSION TUBE 18

7/4 DISMANTLE THE BOOM EXTENSION CYLINDER 19

8 LIFTING - HANDLING 20

9 PERIODIC MAINTENANCE TABLE 21

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Page 3B-05-07-2005 SR-MC-FL B14 NV BOOM

1 PRELIMINARY REMARKS

1/1 SAFETY

The informations contained in this manual must be studied and thoroughly assimilated before

undertaking any maintenance work on the equipment

WARNING Operation, maintenance and adjustments are only allowed to persons withspecific training in operation and maintenance of the equipment. Read the operatingand maintenance instructions before using or servicing the equipment.

WARNING: Before starting any maintenance operation ensure that the machine is in asafe location with good safety, ventilation and lighting conditions. Ensure that liftingequipments and pedestals are compatible with elements’ weight. Follow all the safetyinstructions and ware safety protections as gloves, goggle, helmet, safety boots, earprotectors.

WARNING: Before any operation stabilize and fix steadily all the elements on suitablepedestals. Stop the power packs, switch the general power breaker. Place a tag or aboard to warn other members of the personnel that maintenance work on the machineis in progress.

WARNING: Pressurized oil jets could cause severe injuries. Before any operation onhydraulic circuit, STOP the power packs and release remaining pressure incomponents by operating hydraulic control levers several times. Always release the

static pressure in cylinders before disassemble them.NEVER WORK ON AN OPERATING CIRCUIT.

WARNING: While tests are in progress, do not allow any other member of thepersonnel to stand in the area surrounding the machine. Stay at the control station tobe able to stop the movement and switch off the power pack.

WARNING: Maintenance, adjustment and repairs are restricted to qualified personnelwith special training for the particular equipment. Always read the instructionscarefully before starting any maintenance work.

CAUTION: Always use suitable tools and work in a clean place when dismantling andassembling hydraulic components. After removing cylinders the hydraulic inlet/outletports must be plugged to prevent dirt and air intrusion during operation.

WARNING: The operator must always wear required personal protection, such as safetyhelmet, protective overall, safety boots, hearing protectors, safety goggles etc.

WARNING: Danger of high pressure oil jets.High pressure oil jets can cause serious personal injuries.

Release the pressure in the hydraulic circuits before opening caps or connections.(Accumulator, Cylinder and Hydraulic circuit)

Remember: SAFETY FIRST! Always observe the warnings accompanied by the following symbols.

WARNING

WARNING

WARNING

WARNING

WARNING

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WARNING: Danger of hot surface.Hot surface can cause serious injuries.Components rod, shank or hydraulic component can be hot and beforestarting a maintenance work, please let them cool off.The operator must have adequate wears as gloves.

WARNING: Crushing hazard : do not stay in dangerous area, for instance: centralarticulation, front chassis and rear chassis.

1/2 ABOUT THIS BOOKLET

The present manual is destined for the use of personnel in charge of carrying out, servicing and

WARNING

SAFETY

Do not attempt any such repairs or adjustments that you do not fullyunderstand.

ABOUT THE SAFETY OF REPAIRS

Certain workstages require the use of the feed mechanism during the repair.

Make sure then that:

- no danger is caused to anybody.

- the machine can be immediately stopped when necessary.

- the powerpack is stopped again before the repair-work is continued.

Before starting any repair-work move away from the area where you have justdrilled.

Use proper tools.

Always wear protective clothing, eye protection, earmuffs, safety footwear, andother safety equipment required by the work.

Always follow the marked safety instructions, andobserve caution while working.

The following safety instructions are general rules.

Keep tools and drillingequipment clean.

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maintenance operations on Jumbos.

It contains maintenance operations schedule and operating methods concerning the main elements of

the B14 NV BOOM.

Note that servicing and maintenance operations must be carried out by personnel with the required

qualifications, technical knowledge, and proper training on the machine.

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2) DESCRIPTION

2/1 EXPLANATION

The B14 NV BOOM aremultidirectional and telescopic

booms used in small galleries andmedium sections.They can be used for face, wall, roofor floor drilling and for initiating cross-cuts, by swinging the drill feedthrough a combination of 7movements.

2/2 FEATURES

Boom weight without hoses: 1050 kg

• Hydraulic pressure in cylinders: 210 bar

• Movements amplitude.

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2/3 MAIN COMPONENTS

The boom is fixed to the chassis by the boom swing cradle 1. The extension tube 9 slides in the armaturetube 4 driven by the chrome cylinder situated inside the armature. The boom movements are controlled bythe cylinders 2 and 3.At the end of the extension tube and the rotary actuator 5 allows a 360° rotation of the drill feed in relationto the boom’s axis. The rotary actuator 6 allows a 95° rotation on both sides of the drill feed’s axis.

The drill feed support 8 is fitted with a feed cylinder 7. The cylinder 10 makes the feed tilt movement.The articulations are featured with adjustable expendable pin sets.

1

2

3

5

6

7

8

9

10

4

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3 MAINTENANCE OPERATIONS

CAUTION: The safety of users and the reliability of the boom depend on the maintenance operations

and imply the use of genuine SANDVICK TAMROCK SECOMA spare parts.

All defective parts must be immediately replaced.

WARNING: Maintenance, adjustment and repairs are restricted to qualified personnelwith special training for the particular equipment. Always read the instructions

carefully before starting any maintenance work.

WARNING: While tests are in progress, do not allow any other member of the personnelto stand in the area surrounding the machine. Stay at the control station to be able tostop the movement and switch off the power pack.

3/1 FIRST ENTRY INTO SERVICE

After 20 working hours or 1 week of service, check all the screws and tighten all the expendable pin.

3/2 OPERATIONS AT EACH SHIFT

Before starting up:

• Check that there is no obstruction to hinder the movement of the boom.

• Check the overall condition of the equipment (cylinders, hoses, tube, hydraulic unions,...).

• Search for leaks.

• Check the extension tube.

• Lubricate all the grease points. It is important to check that the rotary actuators grease discharge

valves are working properly.

After starting up:

• Move on handle the boom to check that it moves freely and operates correctly. Movement should be

regular and smooth.

3/3 50-HOURS OR WEEKLY OPERATIONS

• Check that there is no obstruction to hinder the movement of the boom.

• Check the overall condition of the equipment (cylinders, hoses, tube, hydraulic unions,...).


• Check the extension tube.

• Lubricate all the grease points.It is important to check that the rotary actuator grease discharge


• Check the tightening torque of the cylinders and articulation’s expendable pin.

3/4 200-HOURS OPERATIONS

• Carry out the 200-hours operations again.

WARNING

WARNING

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• Check clearance between the boom extension tube and armature. Check the condition of the plastic

skids.

3/5 1200-HOURS OR ANNUAL OPERATIONS

• Check the overall condition of the equipment.

CAUTION: Check welding condition using crack detector products.


• Check the condition of the hydraulic equipments (cylinders, hoses, hydraulic unions,...).

• Check the extension tube. Lubricate it.

• Lubricate all the grease points.It is important to check that the rotary actuator grease discharge


• Check the tightening torque of the cylinders and articulations’ expendable pin.

3/6 3600-HOURS OPERATIONS OVERALL INSPECTION AND RECONDITIONING

• Remove the boom assembly.

• Remove, dismantle and check the different parts. Remove all worn or defective parts.

• Change the seals, (bronze washers),washers and extension tube guide skids.

• Reassemble the boom.

• Test for correct operation.

NB: You can recover all these operations in the periodic maintenance table (last page of thismanual) we invite you to use this document.

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4) TIGHTENING TORQUES

For basic genuine SANDVIK TAMROCK SECOMA™ screws and nut use the following tighteningtorque:

metric dimension torque in Nm

HEX BOLTSGRADE 8.8

torque in Nm

“SIX CUT HOLLOW”BOLTS

GRADE 12.9

M6

M8

M10

M12

M14

M16

M18

M20

M22

M24M27

M33

M36

M39

M42

10

25

50

85

130

200

280

400

530

6701000

1780

2300

3000

3700

16

40

80

140

210

330

460

650

880

11301650

2200

3850

5050

6250

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5) LUBRICATION

Use Mobilith SHC 220, Mobilgrease HP 222 or equivalent.

5/1 GREASE POINTS

There is a grease nipple on any pins. There is two grease nipples at each end of any rotary actuator.

• CAUTION: Check that the rotary actuator grease discharge valves are working properly. They aresituated at the opposite side of each grease nipple. Those valves must release excess grease to avoidover-pressure and over-stress on actuator’s seals and flanges.

Remove faulty valves.

Rotary actuator grease nipples

Pin grease nipples

Armature tube grease nipples

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6 OPERATING METHODS

WARNING: Before starting any maintenance operation ensure that the machine is in asafe location with good safety, ventilation and lighting conditions. Ensure that liftingequipments and pedestals are compatible with elements’ weight. Follow all the safetyinstructions and ware safety protections as gloves, goggle, helmet, safety boots, earprotectors.

WARNING: Maintenance, adjustment and repairs are restricted to qualified personnelwith special training for the particular equipment. Always read the instructionscarefully before starting any maintenance work.

6/1 REMOVING AND REFITTING AEXPENDABLE PIN SET.

Before removal:

• Lift or stand parts with adapted devices.Release static pressure in hydraulic circuit and

cylinders (See «bleeding/breezing anddecompression»).

Removal: (See figure A)

• NOTE: Expendable blocking cones are not re-usable then you must manage their exchangebefore removing them.

• Untight 1 screw, remove 2 caps, hammer 3expendable pin and loosen 4 expendable blockingcones.

• Remove expendable pin set.

Refitting:

• Grease all parts.

• Centre the expendable pin in its housing

• Position spacers, expendable blocking cone and caps(See figure B).

• Torque tighten the screw according to the diameter(See page 9).

• Operate several movement cycles and retighten thescrew.

• Check an retighten at weekly operation maintenancesession.

WARNING

3

1

2

2

4

4

5

5

Figure A

Figure B

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6/2 CHECKING CYLINDER EXPENDABLE PIN

The cylinder axis are expendable pin that are tightened without clearance to the ball joints.

Check the tightening torque. The correct values are as follows:

When a cylinder is removed, make sure that no part of the boom is left

unsupported

6/3 REMOVING AND REFITTING A CYLINDER

Removal:

• Lift or stand the boom with adapted devices to prevent a sudden fall of moving parts when operating

decompression.

• WARNING: Stop power packs and proceed an hydraulic circuit decompression.

• Disconnect hydraulic hoses and plug the inlet/outlet ports of the cylinder.

• Fasten the cylinder to prevent it’s fall.

• Remove expendable pin sets.

Refitting:

• Place the cylinder’s rear knuckle in the yoke, insert the expendable pin set and screw. Do not fully

tighten.

• Adjust rod extension to place the front knuckle on the other yoke. Insert axis set. Tighten both of them

(See "tightening torques" page 10).

• Reconnect hoses.• Pressurize the circuit, bleed and test.

TIGHTENING TORQUE OF THE CYLINDER EXPENDABLE PIN

SYZE OF CYLINDER AXIS D USING TORQUE WRENCH USING PNEUMATIC TOOL

D 40 D 45 200 Nm 190 Nm

D 50 D 57 300 Nm 290 Nm

D 60 D 68 500 Nm 490 Nm

D

BRACKET BRACKET

BALLJOINT

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WARNING: While tests are in progress, do not allow any other member of the personnelto stand in the area surrounding the machine. Stay at the control station to be able tostop the movement and switch off the power pack.

6/4 REMOVING AND REFITTING A BOOM ASSEMBLY

Removal:

• Line up the boom horizontally and align it with jumbo’s expendable pin.

• Remove the drill feed assembly.

• Sling boom.

• Stop the power pack and release remaining pressure in hydraulic components and hoses by

operating control levers several times.

• Disconnect hydraulic hoses and plug the inlet/outlet ports.

• Remove the boom swing cylinder.

• Extract swinging expendable pin set and remove the boom.

Refitting:

• Check elements condition, replace if necessary.

• Assemble and lubricate elements.

• Connect hoses.

• Bleed and breeze hydraulic circuit.

• Proceed tests.

6/5 REMOVING AND REFITTING ROTARY ACTUATOR

Removal:

• WARNING: Stop the power packs and proceed an hydraulic circuit decompression.

• Before removal mark the relative position of boom’s elements with actuator’s flanges.

• Sling or stand the elements with adapted devices to prevent a sudden fall of moving parts.

• Disconnect hydraulic hoses and plug the inlet/outlet ports.

• Secure an fasten the rotary actuator to prevent it’s fall.

• Remove it.

Refitting:

• Check expendable pin play, and adjust if necessary.

• Exchange all flanges screws.

• Apply LOCTITE ADHESIVE 317 on surfaces.

• Torque tighten flanging screws.

WARNING

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For more informations about the cylinders mounting, see the cylinder

maintenance manual in SECTION 1.

7 CHECK AND ADJUSTMENT

7/1 HOSE CONDITION CHECK

Oil leakages may involve reliability and safety problems, it is imperative to exchange leaking

elements immediately.

WARNING: Pressurized oil jets could cause severe injuries. Before any operation onhydraulic circuit, STOP the power packs and release remaining pressure incomponents by operating hydraulic control levers several times. Always release thestatic pressure in cylinders before disassemble them.

NEVER WORK ON AN OPERATING CIRCUIT.

7/2 CHECK WELDING CONDITION USING CRACK DETECTOR PRODUCTS

Stress, vibrations, impacts, corrosive agents could cause invisible cracks in weldings.Then it is

extremely important to checks them in order to prevent breakdowns, accidents and injuries risks.

7/3 CONTROL THE WEAR DE OF THE EXTENSION TUBE

Check the extension tube wear on the

contact area with skids. Wear must not

be superior to 1,5 mn.

WARNING

A

A

SECTION A-A ECTION A A

1 5mn

1 5mn

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7/4 CONTROL/ADJUSTMENT OF CLEARANCE BETWEEN ARMATURE AND EXTENSIONTUBE

Gap check

• Line up the boom horizontally and align it with jumbo’s axis.

• remove plate 1 and dust seal 2.

• Fully extend the tube and clean it.

• Gauge the gap A between tube and armature.• Sling the end of the tube and raise it.

• Gauge the gap B between tube and armature.

• The clearance between the tube and the armature isestimated as following:

Skids’s clearance: J= A - B

CAUTION:

MAXIMUM CLEARANCE J= 2mm

Clearance adjustment

Untie and let the boom rest by its own weight thenremove plate, shims and skids LOWER2 and UPPER1.

• Measure the skid’s thickness, it must be above 24 mm.

• Measure the shims + skid stack, it must be above 32mm

Minimum thickness of all the skids = 24mm

Minimum thickness of shims + skid stack = 32mm

Figure 1

UPPER1

UPPER2

LOWER1LOWER2

LEFT1

LEFT2

RIGHT1

RIGHT2

2

1

Jeu A

Jeu B

Figure 2

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• Replace all the 16 skids if one reaches the minimum thickness.

• It will be helpful to note for the next step: the thickness value of LOWER2 and UPPER1 stacks.

Maximum thickness difference between LOWER2 & UPPER1 stacks must not exceed 3mm.

•

• Reassemble LOWER2 & UPPER1 shims and skids and affix plates.• Sling the end of the tube and raise it. Remove LOWER1 & UPPER2 skids.

• Check skids condition and replace if they are beyond limits.

• Adjust shim stack in order to have the same thickness for LOWER1 & LOWER2. Then Adjust shim stack inorder to have the same thickness for UPPER1 & UPPER2.This levelling ensure a good parallelism between tube and armature axis.

• Refit all parts and check J clearance, if it stays beyond limit value put shims on UPPER1 & UPPER2stacks. (there are two type of shims: 0.5mm and 1mm).NOTE: Tighten plates screws at 150Nm torque.

• Lubricate tube and proceed following tests:

Extend and retract tube in horizontal position. Gauge hydraulic operating pressure needed in cylinder while operating backward and forward movements.

Max. pressure for forward translation: 120bar

Max. pressure for backward translation: 180bar

• In overpressure situation, free the tube translation by removing a 0.5mm shim in UPPER1 & UPPER2stacks.

Proceed similar operations for lateral clearance adjustment.

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8 LIFTING - HANDLING

LIFTING POINT

WARNING: Before starting any maintenance operation ensure that the machine is in asafe location with good safety, ventilation and lighting conditions. Ensure that liftingequipments and pedestals are compatible with elements’ weight. Follow all the safety

instructions and ware safety protections as gloves, goggle, helmet, safety boots, earprotectors.

• WARNING: Check the cables you use, they must be in good condition and fit the weight of the

assembly you are going to lift.

• Fasten correctly the elements before starting operations .

NON NON

OUI

Support glissière seul: 250 kg Bras sans le support de glissère: 900 kg

OUI

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9) PERIODIC MAINTENANCE TABLE

Check Adjust Replace Clean Lubricate

Serial number: Percussion hours (PH): Name:

Date: Diesel hours (DH): Firm:

PERIODS DONE

Shift 50 PH 200

PH

600

PH

1200

PH

1800

PH

2400

PH

3600

PH

B14 NV BOOMB14 NV BOOM YES NO

Freedom and condition of moving parts

Leakage detection

Check tightening torques

Check all equipments condition

Check hoses, unions and fitting condition.

Check the rotary actuator grease discharge

valves

Check rotary actuators flanges screw tightening

torque

Check their axial play

extension tube

Dust seal

Clearance between skids and tube

Check weldings condition with crack detector

Lubricate all points

Remove boom.

Inspect all elements.

remove worn out parts.

Tests

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SANDVIK TAMROCK SECOMA S A S


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