BS3448ER1 Service Bulletin/Repair Instructions

SAV.1E.2012MA
BS3448ER1
SERVICE BULLETIN

REFERENCE:
Nova Bus Manuals
SECTION:
12: Interior Furnishings
RS NO:
MQR 7621-849
EFFECTIVE IN PROD.:
N/A
SUBJECT:
Bum rest shells replacement
JUSTIFICATION:
Bum rest shells cracking and anchor points may loosen with time and vibration.
LEVEL
APPLICATION DEADLINE: 2019JA31

CLAIM REFERENCE NUMBER: WB-3448
DIRECT CHARGES
DESCRIPTION
1
Bushing added to prevent torquing of bolt directly on the shell.
2
–
TIME
LABOUR
MATERIAL
Nova Bus
Nova Bus
2h
–
–
–
MATERIAL

QTY
PART NO
REV.
DESCRIPTION
REPLACES PART N°
1
N81705
–
SHELL REAR (CUT OUT)
N58090
1
N81704
–
SHELL FRONT (CUT OUT)
N58089
8
N31991
–
UPPER BOLT PAD M6 X 50 SS GR.A2 DIN 931
–
1
N35535-01
–
SIKAFLEX 552 AEROGRAY DARK/400
–
7
N81726
–
SCREW M12X75 HEX SS CL A2-70
–
7
N8902765
–
BUSHINGS
–
7
N79659
–
WASHER NORD-LOCK M12 O/S OD SS
–
7
N58380
–
GROMMET 1"ID
–
7
N58627
–
CAP PROTECTOR
–
1
N58602
–
GASKET BUM REST
–
LEVEL 1
LEVEL 2
Materials will be available within 50 days. 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.
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
CHANGE DESCRIPTION
NR
2015DE02
Initial release
R1
2017NO23
Added order L964 to client list. Level 2 parts added
APPROVED BY: Daniel Theriault
WRITTEN BY
André Pelletier
Digitally signed by Daniel Theriault

DN: cn=Daniel Theriault, o=Nova Bus, ou, email=daniel.theriault@volvo.com, c=CA

Date: 2017.11.27 10:36:01 -05'00'
Kumaraswamy K S

PAGE 1 OF 4
SERVICE BULLETIN

Symbol

Empty Field
BS3448ER1
Meaning

No changes, the procedure applies
+
Contract added, the procedure applies
–
Contract removed, the procedure does not apply
CLIENT
SAV.1E.2012MA
ORDER
ROAD NUMBER

FROM
VIN (2NVY/4RKY...)
TO
FROM
TO
QTY
Ames Transportation Agency - Iowa
L707
660
661
S92U5C4500159
S92U1C4500160
2
–
Houston - Texas
L737
1510
1510
S92U4D4500297
S92U4D4500297
1
–
Houston - Texas
L755
1511
1512
S92U4D4500333
S92U6D4500334
2
–
Houston - Texas
L755
1513
1579
S92UXD4500336
S92U8D4500402
67
York Regional Transit - Ontario
L654
1370
1375
S92U1D3000946
S92U5D3000951
6
York Regional Transit - Ontario
L654
1376
1382
S92U9D3000970
S92UXD3000976
7
York Regional Transit - Ontario
L654
1383
1390
S92U5D3000979
S92U2D3000986
8
York Regional Transit - Ontario
L761
1391
1396
S92U6D3001008
S92UXD3001013
6
York Regional Transit - Ontario
L964
1770
1774
S92J6G3750420
S92J3G3750424
5
+
PAGE 2 OF 4
SERVICE BULLETIN
SAV.1E.2012MA
BS3448ER1
WARNING
Follow your internal safety procedures.
PROCEDURE

1.1.
Remove the front and the rear bum rest shells. Retain the removed parts. See Figure 1.
Figure 1 - Front and Rear Bum Rest Views
PAGE 3 OF 4
SAV.1E.2012MA
BS3448ER1
SERVICE BULLETIN

1.2.
Enlarge the holes in parts N81704 (3x) and N81705 (4x) to 1.25'' in diameter.
1.3.
Install the new bum rest shells using the rubber grommet N58380, the new bushing N8902765, self-locking

washer N79659 and screw N81726. Torque to 30.2 lb-ft (41 N•m). See Figure 2. Typical for 7 locations.
N79659
N8902765

N58380
N81726
Figure 2 - Hardware Location
1.4.
Re-install bum rest parts and hardware. New upper pad bolts N31991 are provided.
1.5.
Apply Sikaflex N35535-01 to make a finishing seam between the rear and the front shell. 

PAGE 4 OF 4

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