Jeep Cherokee

 Service Manual

Transmission and transfer case » Automatic transmission-30RH » Cleaning and inspection
Governor and park gear

Thoroughly clean all the governor parts in a suitable cleaning solution but do not use any type of caustic cleaning agents.

The governor weight components (Fig. 218) and the governor valve (Fig. 219), must slide freely in their bores when clean and dry. Minor surface scratches and burrs can be smoothed with crocus cloth.

The aluminum governor valve and outer weight have a hard coating on them. Check condition of this coating carefully. Do not reuse either part if the coating is damaged.

Inspect the governor weight spring for distortion.

Replace the spring, if distorted, collapsed, or broken.

Clean the filter in solvent and dry it with compressed air. Replace the filter, if damaged. Inspect the park gear for chipped or worn gear teeth or damaged ring grooves. Replace the gear, if damaged.

Check the teeth on the park gear for wear or damage.

Replace the gear if necessary. Inspect the metal seal rings on the park gear hub. Replace the rings only if severely worn, or broken.

Governor and park gear

Extension housing and park lock

Valve body

Transmission

Overrunning clutch/low-reverse drum/overdrive piston retainer

Front servo

Oil pump and reaction shaft support

Front clutch

Rear clutch

Planetary geartrain/output shaft