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