Technical Service Bulletins
Search 172,063 manufacturer communications covering 879 vehicle makes from 1955 to 2025.
Showing 73 bulletins for ALLISON DIV
SIL 21-TR-18
Jul 1, 2018
100000 POWER TRAIN
Announces policy to return switches used in prior generations of transmissions
2015FA12 Rev A 3
Mar 10, 2016
110000 ELECTRICAL SYSTEM
Customer Satisfaction Field Action 2015FA12 -- Recalibration for Code Setting MIL Lamp During Shutdown on HD OBD Compliant Buses
WATCH 501
Jan 1, 2016
103000 POWER TRAIN:AUTOMATIC TRANSMISSION
Allison Transmission 5th Generation Controls 2016 (B161, C161, and D161) Software Features and Enhancements Allison Transmission, Inc. (ATI) is pleased to announce the release of the Allison 5th Generation Controls 2016 (B161, C161, and
FA-2011FA07
Feb 1, 2012
103000 POWER TRAIN:AUTOMATIC TRANSMISSION
ALLISON TRANSMISSION: A SERVICE ACTION PROCEDURE IS PROVIDED REGARDING THE REPLACEMENT OF DRIVE UNIT SUCTION FILTERS ON SOME BUSES, AND ONCE REPLACED, OIL LEVEL ON PUSH BUTTON SHIFT SELECTOR (PBSS) WILL READ OK. NO MODEL OR YEARS LISTED.
ATI-1-1
Nov 5, 2010
111000 ELECTRICAL SYSTEM:12V/24V/48V BATTERY
ALLISON: BATTERIES CAN BE CHARGED AT HIGH CHARGE RATE WHEN COUPLED WITH CERTAIN CONDITIONS ON LONG DOWNHILL OPERATIONS. DOWNHILL GRADES ARE SUSCEPTIBLE BECAUSE OF DESCENDING LOW GRADE AND TEMPERATURE. *PE
4WT00B
Aug 1, 2001
102000 POWER TRAIN:MANUAL TRANSMISSION
INFORMATION REGARDING WT PRODUCT CHANGES FOR CY2000 TRANSMISSIONS. *SLC
13TR01
Jul 1, 2001
980000 UNKNOWN OR OTHER
INFORMATION REGARDING TRANSFER PLATE PART NUMBER 23017500. *YD
71K2K01A
Jul 1, 2001
102000 POWER TRAIN:MANUAL TRANSMISSION
INFORMATION REGARDING 1000/2000/2400 RETRAN TRANSMISSIONS. *SLC
15WT01
Jun 1, 2001
102000 POWER TRAIN:MANUAL TRANSMISSION
INFORMATION REGARDING REDUCED CLEARANCE PLANETARY SPINDLES AND SPINDLE RETAINING RING, INCLUDING MODELS MD3000/B300/B400/3000MH. *SLC
97120198000
Apr 29, 1998
101000 POWER TRAIN:CLUTCH ASSEMBLY
CAMPAIGN BULLETIN ON CUSTOMER SATISFACTION CAMPAIGN TO INSTALL IMPROVED C5 CLUTCH FRICTION PLATES IN B 300(R), B 400(R), AND B 500(R) TRANSMISSIONS IN TRANSIT BUS AND TOUR COACH SERVICE. *YC
26TR95
Dec 1, 1995
106100 POWER TRAIN:AXLE ASSEMBLY:BANJO HOUSING
NEW OUTPUT RETARDER ADAPTER TO RETARDER HOUSING GASKET. *SD
27WT95
Dec 1, 1995
103000 POWER TRAIN:AUTOMATIC TRANSMISSION
RETARDER FLOW VALVE SPRING REDUCES THE CHANCE OF THE RETARDER STICKING IN THE 'ON' POSITION. *SD
24WT95
Nov 1, 1995
103700 POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER
A SEPARATOR PLATE AND GASKET CHANGE WAS IMPLEMENTED ON ALL WORLD TRANSMISSIONS ON SEPTEMBER 1, 1995. THE CHANGE WAS IMPLEMENTED TO ELIMINATE CONVERTER REGULATOR PIN BATTERING. *SD
18WT95
Jul 1, 1995
103000 POWER TRAIN:AUTOMATIC TRANSMISSION
HD 4000(R)/B 500(R) CALIBRATION CHANGES. *SD
CAMP95C1
Jul 1, 1995
103700 POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER
ALLISON TRANSMISSION HAS DETERMINED THAT VEHICLES WHICH UTILIZE THE B 500/HD 4000 SERIES TRANSMISSION TORQUE CONVERTER HOUSING SIDE MOUNT PADS TO SUPPORT THE POWERPACK MAY CREATE A CRACK AROUND THE MOUNTING PAD. THIS CRACK MAY EVENTUALLY
5TR95
Mar 1, 1995
061000 ENGINE AND ENGINE COOLING:ENGINE
NEW OUTPUT RETARDER ACCUMULATOR COVER GASKET RELEASE. *TW
7TR95
Mar 1, 1995
103000 POWER TRAIN:AUTOMATIC TRANSMISSION
PRODUCT ENHANCEMENT FOR REVERSE PRESSURE SWITCH, P/N 29503665. *TW
40TR94
Oct 1, 1994
103700 POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER
PROBLEMS WITH TORQUE CONVERTER ATTATCHING NUTS. *TW
41TR94
Oct 1, 1994
101000 POWER TRAIN:CLUTCH ASSEMBLY
REDUCED CLUTCH CLEARANCE FOR IMPROVED SHIFT QUALITY. *TW
9TR93
Feb 1, 1993
103000 POWER TRAIN:AUTOMATIC TRANSMISSION
A VITON O-RING HAS BEEN RELEASED TO SERVICE THE INNER O-RINGS.