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APPLICATION DEADLINE:2014FE07
REFERENCE: Nova Bus ManualsSECTION: 16 24-Volt electrical systemRS NO: MQR 7621-587EFFECTIVE IN PROD.: L681-119 (2012OC09)
MATERIALQTY PART NO REV. DESCRIPTION REPLACES PART N°
LEVEL 1– – – –
LEVEL 2 – – – – –
LEVEL DESCRIPTIONDIRECT CHARGES
TIMELABOUR MATERIAL
1 Reposition the lockwasher and terminal on the switch contact Nova Bus Nova Bus 30min.2 – – – –
SUBJECT: Master control switch and activation switchJUSTIFICATION: Loss of contact between wire terminals and switches
REVISION HISTORYREV. DATE CHANGE DESCRIPTION WRITTEN BY
NR 2013JA11 Initial release Luc CarignanR1 2013FE05 Subject, justification and description change.
Procedure change to include the proper position of the lock washer on the regular type switches.Allocated time for repair change.
Luc Carignan
DISPOSAL OF PARTS
REMOVED PARTS ARE:DISCARDED RETAINED
–– –
APPROVED BY:
SAV.1E.2012MA
BS1951ER1
PAGE 1 OF 4
SERVICE BULLETIN
CLIENT ORDERROAD NUMBER VIN (2NVY/4RKY...)
QTYFROM TO FROM TO
New York City Transit - New York L670 5771 5894 S92U9B4000147 S92U8C4500060 124
New York City Transit - New York L670 5770 5770 S92UXC4500061 S92UXC4500061 1
New York City Transit - New York L681 5896 5986 S92U2C4500023 S92U9C4500164 91
New York City Transit - New York L681 5253 5280 S92U0C4500165 S92U1C4500191 27
SAV.1E.2012MA
BS1951ER1
PAGE 2 OF 4
SERVICE BULLETIN
WARNING
Follow your internal safety procedures.
PROCEDURE1.1 Remove the operator's control panel just enough to inspect the position of the lockwasher on the master
control switch, as well as all other regular type switches. See Figure 1a. The lock washer should be between the terminal and the screw. If not, reposition the lock washer as indicated in Figure 2.
1.2. Open the overhead console and inspect the position of the lockwasher on the switch located on the console switch support and the articulation emergency release switch. See Figure 1b. You may need to remove the articulation emergency release switch to perform the inspection. The lock washer should be between the terminal and the screw. If not, reposition the lock washer as indicated in Figure 2.
1.3. Open the rear engine control box located in the engine compartment and inspect the position of the lockwashers on the switches. See Figure 1c. The lock washer should be between the terminal and the screw. If not, reposition the lock washer as indicated in Figure 2.
Operator's control panel
Figure 1a - Location of the Switches on the Operator's Control Panel
Master control switch
Figure 1b - Location of the Switches on the Switch Support and Beneath the Console
Overhead console switch support
Articulation emergency release switch
Overhead console
SAV.1E.2012MA
BS1951ER1
PAGE 3 OF 4
SERVICE BULLETIN
Figure 2 - Proper Installation of the Lockwasher and Terminal on the Switch Contact
Screw
Lockwasher
Terminal
Regular Type Switch
Main control switch contact
Lockwasher
Terminal
Screw
Master Control Switch
Figure 1c - Location of the Switches on the Engine Control Box
Engine control box
SAV.1E.2012MA
BS1951ER1
PAGE 4 OF 4
SERVICE BULLETIN