BS4934E

SAV.1E.2012MA
BS4934E
SERVICE BULLETIN
REFERENCE:
Nova Bus Manuals
SECTION:
09: Engine and Cooling
RS NO:
MQR 7621-1981
APPLICATION DEADLINE: 2021AU20
CLAIM REFERENCE NUMBER: WB-4934
EFFECTIVE IN PROD.: N/A
SUBJECT:
CAC elbow hose failures.
JUSTIFICATION:
Fiber material should be Woven Aramid Fabric, but some parts have knitted Aramid.
LEVEL
1
DIRECT CHARGES
DESCRIPTION
Installation of new elbow.
2
–
TIME
LABOUR
MATERIAL
Novabus
Novabus
1 hr
–
–
–
MATERIAL
QTY
PART NO
REV.
N75007
–
–
–
DESCRIPTION
REPLACES PART N°
LEVEL 1
1
ELBOW 90° SILICONE PIPE 4"I.D.
N75007
LEVEL 2
–
–
–
Materials will be available within 64 days once your order has been placed. To order, please contact Prevost Parts
by phone at 1‑800‑771‑6682, by fax at 1‑888‑668‑2555 or by email at [email protected].
Specify document number, quantity of parts required and shipping address.
DISPOSAL OF PARTS
REMOVED PARTS ARE:
DISCARDED *
RETAINED
Yes
–
* Dispose of the unused parts and the defective parts in
accordance with local environmental standards in effect.
REVISION HISTORY
REV.
DATE
NR
2020AU14
APPROVED BY:
CHANGE DESCRIPTION
Initial release
Jean-Nicolas Fournier
WRITTEN BY
Devanand
Digitally signed by Jean-Nicolas Fournier
DN: cn=Jean-Nicolas Fournier, o=Nova Bus, [email protected], c=CA
Date: 2020.09.01 11:21:59 -04'00'
PAGE 1 OF 5
SERVICE BULLETIN
CLIENT
ORDER
ROAD NUMBER
SAV.1E.2012MA
BS4934E
VIN (2NVY/4RKY...)
FROM
TO
FROM
TO
QTY
Capital Area Transportation Authority Michigan CATA
LC07
6012
6015
S92J5K9777269
S92J5K9777272
4
Capital Area Transportation Authority Michigan CATA
LC08
700
718
L82J7K9777278
L82J8K9777306
19
Capital Area Transportation Authority Michigan CATA
LC75
—
—
S92J4K9777473
S92J4K9777473
1
Houston Texas - Metro
LC55
2070
2079
L82KXK9777378
L82K0K9777387
10
Houston Texas - Metro
LC91
2500
2501
L82J4L9777479
L82J0L9777480
2
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SERVICE BULLETIN
SAV.1E.2012MA
BS4934E
WARNING
Follow your internal safety procedures.
PROCEDURE
1.1.
Park the vehicle on an even surface with transmission in neutral (N).
1.2.
Turn the ignition switch to OFF position and engage the parking brake.
1.3.
Set the master control switch in the STOP position (see figure 1).
Master control switch in
STOP position
Figure 1 - Master Control Switch in STOP Position
1.4.
Set the battery disconnect switch in the battery compartment to the OFF position (see figure 2).
Battery disconnect
switch in OFF
position
Main power light
turned OFF
Figure 2 - View of Battery Disconnect Switch
PAGE 3 OF 5
SERVICE BULLETIN
SAV.1E.2012MA
BS4934E
WARNING
Before starting any work on the vehicle, make sure the vehicle is completely and securely stationary.
Disconnect the starting circuit on the control box at the rear of the vehicle and place the battery disconnect
switches in the off position.
CAUTION
The CAC and the CAC plumbing are under pressure, and are more prone to leakage than an unpressurized
system.
1.5.
Locate the CAC (Charge Air Cooler) pipe at the back of the vehicle.
1.6.
Install new elbow N75007 and discard the old one (see figure 3).
Figure 3 - View of Elbow in Charge Air Cooler Pipe
PAGE 4 OF 5
SERVICE BULLETIN
1.7.
SAV.1E.2012MA
BS4934E
Reuse the clamp N12883, torque at 17 ± 2 Nm (see figure 4).
17 ± 2 Nm
Figure 4 - Installation of Elbow in CAC Pipe
1.8.
Set the battery disconnect switch in the battery compartment to ON position.
1.9.
Set the master control switch in the ON position.
1.10.
Return the bus to service.
PAGE 5 OF 5