Allison Transmission Parts

Call Us 1-407-295-1221 or Email us

Allison Transmission Parts
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Allison Transmission Parts
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,


Condition Probable Causes Suggested Remedies
Excessive Engine Flare 1. Trimmer valve sticking. 1. Replace or rebuild control valve body assembly. Inspect trimmer valves and confirm correct springs.
2. Trimmer valves and/or trimmer valve springs incorrect or weak. 2. Confirm correct trimmer valves and trimmer valve springs.
3. Selected range clutch defective. 3. Overhaul transmission.
4. Hook-type sealring broken. 4. Replace sealrings.
5. Shift points too low. 5. Check trimmer valves and confirm correct trimmer valve springs.
6. Forward clutch piston seals leaking or clutch plates slipping (all upshifts). 6. Overhaul forward clutch and piston assembly.
7. Governor valve sticking. 7. Clean or replace governor screen and/ or governor.



Allison Transmission Parts

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