Allison 3000 push pad dead - no start - repair tips

[ewo1]

Instructions for WTECII system (two digits on Your shift selector)​

LINK->

Troubleshooting – Transmission Instruments

This is a must have, print it and keep it in the bus!

For 1992, 1993, 1994, and early 1995 models if experiencing erratic or no display; especially when there is cold weather or have retrieved any trouble codes.
Have you seen code 69-32 already? Stop troubleshooting = 100% defective ECU!

 

[nikitis]

Awesome, Thanks for that. I've converted the site to PDF for downloading in case that site ever goes down.

 

[ewo1]

http://www.wanderlodgegurus.com/database/Chassis/Transmission/Allison/AllisonTroubleshootingManualMD_HD_B.pdf

Troubleshooing Manual
Allison Transmission
MD/HD/B Series Transmissions
WTEC II Controls
(Pre-TransID and TID 1)

MD 3060/MD 3066/MD 3560(P)(R)
MD 3070PT
HD 4060/HD 4560(P)(R)
B 300/B 400/ B 500(P)(R

May 1998 Revision 1, 1999

 

[ewo1]

Troubleshooting manual WTEC 3 - 3000 & 4000 series ​

Link-> Allison Transmission TS3989EN Troubleshooting Manual.pdf​

This manual provides troubleshooting information for the 3000 and 4000 Product Families Transmissions. Service. Manuals SM4013EN and SM4014EN

9.6 mb file, over 700 pages!

 

[ewo1]

This is the operators manual for a 3000-4000 Allison but...it is based on the MH vocation.. or for motorhome versions of the Allison 3000.
Most if not all should be the same for busses. If not then please just point it out for others.

 

[ewo1]

VEHICLE ELECTRICAL SYSTEM INTERFACE

The purpose of this section is to discuss the electrical connections which are necessary to interface the transmission controls and the vehicle electrical systems to facilitate basic transmission and vehicle operation.

THIS IS A MUST HAVE, QUICK INDEX - PRINT AND SAVE IN THE BUS!
(only 10 pages)​

Items discussed in the VEHICLE ELECTRICAL SYSTEM INTERFACE section are:
1.0 PURPOSE
2.0 GENERAL
3.0 REQUIREMENTS FOR TRANSMISSION OPERATION
3.1 ECU Power
3.2 Grounds
3.3 Ignition
3.4 "Check Trans" Light
4.0 MANDATED VEHICLE FUNCTIONS
4.1 Neutral Start4.2 Speedometer Signal
4.3 Reverse Warning
4.4 Anti-Lock Brakes
5.0 ELECTRICAL CONNECTIONS REQUIRED FOR CERTAIN TRANSMISSION OPTIONS
5.1 Retarder Option
5.1.1 Retarder Enable
5.1.2 Service Brake Status
5.1.3 Retarder Indicator
5.1.4 Anti-Lock Brake Input
5.1.5 Sump / Retarder Temperature Indicator
5.1.6 Engine Water Temperature Signal
5.1.7 Retarder Modulation Controls
5.2 Differential Clutch Option (3000 Product Family Seven-Speed Models)
5.2.1 Differential Clutch Request
5.2.2 Differential Clutch Indicator
6.0 OPTIONAL TRANSMISSION OR CONTROLS FUNCTIONS
6.1 Shift Selector Dimmer
6.1.1 "Keypad" Pushbutton Shifter
6.1.2 "Strip" Pushbutton Shifter
6.1.3 Lever Shifter
6.2 Input Functions
6.3 Output Functions
7.0 INTERFACE WITH VEHICLE SHUTDOWN SYSTEMS