Leakage Inspection

Leakage Inspection
The transmission has the following parts to prevent external fluid leakage:
^ gaskets
^ lip-type seals
^ O-ring seals
^ seal rings
^ seal grommets
^ thread sealant
^ sealing washers








External Sealing

Leakage at the transmission pan-to-case gasket often can be stopped by tightening the retaining bolts to specification. Refer to Torque Specifications. If necessary, install a new pan-to-case gasket only if gasket is damaged.

If leakage is found by the solenoid body connector, refer to Main Control Valve Body-Accumulator Body, Solenoid Body.

When fluid is found to be leaking between the case and the cooler line fitting, tighten the fitting to maximum specification.

If vehicle is equipped with power take-off (PTO), check the sealing gasket at the power take-off (PTO) unit for leaks.

CAUTION: Do not try to stop the fluid leak by increasing the torque beyond specification. This can cause damage to the case threads and or case fittings.

If the leak continues, install new cooler line fitting and tighten to specification. The same procedure should be followed for fluid leaks between the oil-to-air cooler transmission remote filter and cooler line fittings.

If leakage is found at the manual control lever shaft, install a new seal.

Check for fluid leaking from the end of the extension housing. Leakage can result from a damaged seal, missing garter spring or worn extension bushing, damaged speed sensor plug, or the output shaft retainer (vehicles equipped with the fixed yoke). Install a new seal assembly, bushing, or both, as necessary.

Inspect the line pressure plug for leakage. Make sure it is tightened to specification. If tightening the plug does not stop the leak, the case threads and/or plug could be damaged. Remove the plug and inspect the plug and case thread for damage repair as necessary.