Allison Troubleshooting Guide
- Allison 754 Troubleshooting Guide
- Allison Troubleshooting Guide
- Allison Transmission Troubleshooting Guide
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Troubleshooting Charts For Allison Transmissions AT / MT (B) / HT / V The troubleshooting information contained in the following charts outlines the possible causes of transmission conditions and their remedies. Several possible causes are indicated; numbered items indicate suggested remedies for the causes.
For Sales and Service Call America's #1 Supplier of OEM Allison Transmission Parts and Authorized Allison Dealer; TransDiesel Toll-Free: 1-800-422-1220, B - ABNORMAL ACTIVITIES OR RESPONSES Condition Probable Causes Suggested Remedies Excessive Creep in First and Reverse Ranges 1. Engine idle speed set too high.
Audi 80 service manuals. Adjust to correct idle speed. (Refer to vehicle service manual.) No Response to Movement of Shift Selector Lever. Shift selector linkage unhooked. Connect linkage - shift selector gates must agree with model. Detent positions at transmission must conform with gates on shift selector. (Refer to vehicle service manual.) 3. Shift selector linkage defective.
Repair or replace linkage. Shift selector linkage must be free and secure. Main pressure low. Refer to Chart E, Low Pressures. Shift selector not engaged at selector valve. Replace defective part.
(Refer to applicable service manual.) 6. Transmission fluid level low. Fill to proper level. (Be sure dipstick calibration is correct for specific model.) Vehicle Moves Forward in Neutral 7. Shift selector linkage out of adjustment, defective, or broken. Repair or replace linkage.
Allison 754 Troubleshooting Guide
(Check engine idle speed.) Shift selector linkage must be free and secure. Forward clutch failed and dragging. Rebuild forward clutch. Vehicle Moves Backward in Neutral 9. Shift selector linkage out of adjustment, defective, or broken. Repair or replace linkage.
Allison Troubleshooting Guide
Shift selector linkage must be free, and secure. Fourth clutch failed and dragging (third clutch in V 730). Rebuild clutch. Reverse Warning Buzzer and/or Vehicle Backup Lights Come on During Forward Operation 11. Improper 1-2 relay valve installed.
Allison Transmission Troubleshooting Guide
Install new 1-2 relay valve.
Allison Transmission is dedicated to providing our customers and technicians with the latest technical information and resources. All Allison Authorized facilities have the right tools, training and parts. Given their extensive experience and knowledge, they are always your first choice to properly service your Allison Automatic. We invest daily in our tools and training to help ensure that you will see the full value of your investment in our product. Allison provides all of our technicians with the right tools specified for your Allison Automatic, as well as extensive knowledge through our online service tools portals.
When it comes to diagnostics or preventative maintenance, Allison’s electronic diagnostic system, Allison DOC Universal, is critical in making the right call. Allison has developed DOC Universal to meet the needs of our technicians. This tool allows them to monitor and review all the control systems that are critical to the operation of your Allison Automatic. Every Allison Authorized facility and technician is required to achieve and maintain proficiency with Allison DOC Universal to be part of the Allison Service Network. For more information on Allison service Tools + Diagnostics, visit our online service tool.