SAV.1E.2012MA

BS4972ER1

SERVICE BULLETIN
REFERENCE:

Nova Bus Manuals

SECTION:

09: Engine and Cooling

RS NO:

MQR 7621-1684

APPLICATION DEADLINE: 2022JL08
CLAIM REFERENCE NUMBER: WB-4972

EFFECTIVE IN PROD.: LD77

SUBJECT:

Intermittent low oil level alarms.

JUSTIFICATION:

Reports of intermittent low oil level telltale alarms when oil level is adequately filled.

LEVEL

1

DIRECT CHARGES

DESCRIPTION

Replacement of Hydraulic Oil Level Sensor.

2

–

TIME

LABOUR

MATERIAL

Novabus

Novabus

0.25 hr

–

–

–

MATERIAL
QTY

PART NO

REV.

DESCRIPTION

1

N99760

–

SENSOR LEVEL HYDRAULIC

1

G5007994

–

CABLE TIE (8428098,99,8877976)

–

–

N37086

–

REPLACES PART N°

LEVEL 1

N85184
–

LEVEL 2

–

–

–

SHOP SUPPLY

2 ml

LOCTITE THREAD SEALANT WHITE

–

Note:
N37086 (LOCTITE THREAD SEALANT WHITE)
1 ea = 250ml
2 ml / Bus
336 ml for 168 buses
1.34~2 Tubes for the entire campaign.

Materials will be available within 67 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 prevostparts.commandes@volvo.com.
Specify document number, quantity of parts required and shipping address. Use the supplier Purosil to order the
parts
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

2020DE17

Initial release

Devanand

R1

2021MR26

Revised Client list LC98 added.

Devanand

APPROVED BY:

CHANGE DESCRIPTION

Jean-Nicolas Fournier

Digitally signed by Jean-Nicolas Fournier
DN: cn=Jean-Nicolas Fournier, o=Nova Bus,
email=jean-nicolas.fournier@volvo.com, c=CA
Date: 2021.03.26 10:28:19 -04'00'

WRITTEN BY

PAGE 1 OF 5

SERVICE BULLETIN
CLIENT

+

ORDER

ROAD NUMBER

SAV.1E.2012MA

BS4972ER1

VIN (2NVY/4RKY...)

QTY

FROM

TO

FROM

TO

18301

18404

L82L8J3751245

L82L3J3751444

104

CMBC (TransLink) - British Columbia

LB31

CMBC (TransLink) - British Columbia

LB32

18451

18473

L82J5J9776726

L82J4J9776748

23

CMBC (TransLink) - British Columbia

LB74

H19301

H19302

L82M3K3751678

L82M7K3751702

2

Thunder Bay Ontario - Metrolinx

LA01

—

—

L82J5H3750448

L82J7H3750449

2

Thunder Bay Ontario - Metrolinx

LA57

—

—

L82J8H3750895

L82J8H3750928

12

Moncton (Codiac) - New Brunswick

LA42

—

—

L82J8H9776066

L82J0H9776076

11

Moncton (Codiac) - New Brunswick

LA58

—

—

L82J2J9776389

L82J2J9776389

1

Moncton (Codiac) - New Brunswick

LB84

N/A

N/A

L82J3K9777004

L82J3K9777004

1

RMA World wide chauffeured Transportation

LC98

N/A

N/A

L82J6L9777693

L82J7L9777704

12

PAGE 2 OF 5

SERVICE BULLETIN

SAV.1E.2012MA

BS4972ER1

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

BS4972ER1

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.

FOR DIESEL BUS CONFIGURATION:
1.5.

Open the engine compartment rear door to access the hydraulic tank (see figures 3 and 4)

1.6.

Cut the cable tie and disconnect the hydraulic oil level sensor electrical connector (see figure 4).

Oil Sensor

Electrical Connector

Figure 3 - Rear Door Compartment

Figure 4 - Hydraulic Tank Location

FOR HYBRID BUS CONFIGURATION:
1.7.

Open the eSteering compartment door to access the hydraulic tank (see figures 5 and 6).

1.8.

Disconnect the hydraulic oil level sensor electrical connector (see figure 6).

Oil Sensor

Figure 5 - eSteering Compartment

Figure 6 - Hydraulic Tank Location
PAGE 4 OF 5

SERVICE BULLETIN

SAV.1E.2012MA

BS4972ER1

1.9.

Apply a bead of Loctite 565 thread sealant (P/N N37086) onto male threads of the new sensor starting two
threads from the end (see figure #7).

1.10.

Unscrew and remove the existing oil sensor from the hydraulic oil tank.

1/4" - L8 NPTF

Thread Sealant

Figure 7 - Hex Head Plug

1.11.

Use a clean rag or cloth to catch any fluid that may escape the hydraulic oil tank sensor threaded hole.

1.12.

Immediately insert the new sensor into the hole and quickly fasten it finger tight. Torque to 2 turns past
finger tight using an appropriate wrench. The recommended installation torque is 9Nm. (There is no specific
mounting orientation to respect).

1.13.

Apply torque seal bead once tightened.

1.14.

Reconnect electrical connector and tie wrap to existing support.

1.15.

Return the bus to service.

PAGE 5 OF 5