Allison Transmission Parts

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Allison Transmission Parts
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Allison Transmission Parts
Allison Transmission Parts
Allison Transmission Parts
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Our large inventory of OEM Allison Transmission Parts includes a large line of new and rebuilt Allison automatic transmissions, and Allison Automatic transmission cores. All transmission parts can be shipped the same day in most cases. Call our Sales and Service Departments 1-407-295-1221 or Email us.

Allison Transmission Parts

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,


M - CLUTCH(ES) SLIPPING - AT 540/542/1542/543/545/1545*
Condition Probable Causes Suggested Remedies
Slipping in Fourth and Reverse Ranges Only 1. Fourth clutch defective. 1. Overhaul clutch and replace piston seals.
2. Trimmer valve sticking. 2. Overhaul trimmer valve.
3. Sealrings on center support assembly hub worn or broken. 3. Replace sealrings.
4. Clutch piston sealrings damaged. 4. Replace sealrings.
5. Centrifugal check balls in fourth clutch housing not seating. 5. Inspect check balls for contamination and proper operation.
Slipping in First and Reverse; OK in Other Forward Ranges 6. First clutch defective. 6. Overhaul clutch and replace piston seals.
7. Piston sealrings damaged. 7. Replace sealrings.
8. Clutch-apply tube loose and leaking. 8. Inspect tube and reset or replace if necessary.
* NOTE: If unit is modified for split shaft PTO, all external circuitry must be removed before troubleshooting.



Allison Transmission Parts

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