BS5079E

SAV.1E.2012MA
BS5079E
SERVICE BULLETIN
REFERENCE:
Nova Bus Manuals
SECTION:
16: Electrical System
RS NO:
MQR 7621-2280
APPLICATION DEADLINE: 2022JN10
CLAIM REFERENCE NUMBER: WB-5079
EFFECTIVE IN PROD.: N/A
SUBJECT:
Alternator fail light coming on in service.
JUSTIFICATION:
A 12V relay is installed instead of a 24V relay for the alternator ouput status signal.
LEVEL
1
DIRECT CHARGES
DESCRIPTION
Removal and Replacement of Relay.
2
–
TIME
LABOUR
MATERIAL
Novabus
Novabus
0.25 hr
–
–
–
MATERIAL
QTY
PART NO
REV.
DESCRIPTION
REPLACES PART N°
N11613
–
RELAY 24V WITH DIODE
N82209
–
–
–
–
–
–
–
–
LEVEL 1
1
LEVEL 2
–
SHOP SUPPLY
–
Note: N11613 ss to G1077774
Materials will be available within 32 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
2021AL26
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: 2021.05.07 11:08:27 -04'00'
PAGE 1 OF 4
SERVICE BULLETIN
CLIENT
ORDER
ROAD NUMBER
SAV.1E.2012MA
BS5079E
VIN (2NVY/4RKY...)
FROM
TO
FROM
TO
QTY
Montgomery County - Maryland
LC33
194600
194600
S92J1K9777351
S92J1K9777351
1
Montgomery County - Maryland
LC34
1946001D
1946015D
S92J4L9777474
S92J2L9777490
15
San Juan Puerto Rico
LD01
2020-01
2020-01
L82J0L9777561
L82J0L9777561
1
San Juan Puerto Rico
LD32
2021-01
2021-10
L82J5L9777751
L82J6L9777760
10
PAGE 2 OF 4
SERVICE BULLETIN
SAV.1E.2012MA
BS5079E
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 4
SERVICE BULLETIN
1.5.
SAV.1E.2012MA
BS5079E
Locate the 12V relay at position +IB RL99AH1 inside the interior back panel (see figure 3).
Figure 3 - Interior Back Panel
1.6.
Remove the 24V relay N82209 and replace it with a N11613 relay.
1.7.
Close the rear panel and test the bus (the alternator tell tale light should not be lit).
1.8.
Return the bus to service.
PAGE 4 OF 4