Transmission Case Cleaning and Inspection

Automatic Transmission - 10L80 MHS MQC | Repair Instructions - Off Vehicle | Document ID: 4711079

Warning

Refer to Safety Glasses Warning.

Caution

After cleaning the transmission components, allow to air dry. Do not use cloth or paper towels in order to dry any transmission components. Lint from the towels can cause component failure.

Caution

Do not reuse cleaning solvents. Previously used solvents may deposit sediment which may damage the component.

Transmission Case Cleaning and Inspection — figure 1

1. Thoroughly clean the transmission case assembly, including case threads, with clean solvent.
2. Clean gasket sealing surfaces. Remove all residual gasket material.
3. Inspect all threaded holes. If necessary, repair any thread damage. 3.1. Front Case Sealing Surface (1)

Note

To service the manual shift shaft seal, refer to Manual Shift Shaft Seal Removal or Manual Shift Shaft Seal Installation. 3.2. Manual Shift Shaft Seal (2) 3.3. Electrical Connector Passage Sleeve Bore (3) 3.4. Park Pawl Actuator Guide Bore (4) 3.5. Clutch Housing Fluid Passage Seal Surface (5) 3.6. Fluid Pan Sealing Surface (6) 3.7. Rear Case Sealing Surface (7)