Toyota
Jeep Cherokee
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Transmission and transfer case » Automatic transmission-30RH » Cleaning and inspection
Valve body

Serviceable valve body components are:

  •  park lock rod and E-clip
  •  switch valve and spring
  •  pressure adjusting screw bracket
  •  throttle valve lever
  •  manual lever
  •  manual lever shaft seal, washer, E-clip and detent ball
  •  fluid filter
  •  converter clutch solenoid

The remaining valve body components are serviced only as part of a complete valve body assembly.

Fig. 218 Governor Weights
Fig. 218 Governor Weights

1 - INTERMEDIATE WEIGHT
2 - SNAP RING
3 - INNER WEIGHT
4 - INNER WEIGHT SPRING
5 - OUTER WEIGHT

Fig. 219 Governor Components
Fig. 219 Governor Components

1 - SEAL RING (PLAIN END)
2 - SEAL RING (HOOK END)
3 - PARK GEAR
4 - GOVERNOR BODY
5 - GOVERNOR VALVE
6 - VALVE SHAFT
7 - E-CLIPS (2)
8 - FILTER
9 - SNAP RING (THIN)
10 - SNAP RING (THICK)
11 - SNAP RING
12 - RETAINER WASHER
13 - GOVERNOR WEIGHT ASSEMBLY
14 - GOVERNOR BODY BOLTS (4)
15 - WASHER

Clean the valve body components in a parts cleaning solution only. Do not use gasoline, kerosene, or any type of caustic solution. Dry the parts with compressed air. Make sure all passages are clean and free from obstructions.

NOTE: Do not use rags or shop towels to wipe off valve body components. Lint from these materials will adhere to the valve body components. Lint will interfere with valve operation and may clog filters and fluid passages.

Inspect the throttle and manual valve levers and shafts. Do not attempt to straighten a bent shaft or correct a loose lever. Replace these components if worn, bent, loose or damaged in any way.

Inspect all of the valve body mating surfaces for scratches, nicks, burrs, or distortion. Use a straightedge to check surface flatness. Minor scratches may be removed with crocus cloth using only very light pressure.

Minor distortion of a valve body mating surface may be corrected by smoothing the surface with crocus cloth. The cloth should be in sheet form and be positioned on a surface plate, sheet of plate glass, or equally flat surface. However, if distortion is severe or any surfaces are heavily scored, the valve body will have to be replaced.

CAUTION: Many of the valve body valves and plugs are made of coated aluminum. Aluminum components can be identified by the dark color of the special coating applied to the surface (or by testing with a magnet). DO NOT polish or sand aluminum valves or plugs with any type of material, or under any circumstances. This practice might damage the special coating and cause the valves and plugs to stick and bind.

Fig. 220 Park Sprag, Shaft And Spring
Fig. 220 Park Sprag, Shaft And Spring

1 - SPRAG SHAFT
2 - PARALLEL JAW SNAP RING PLIERS
3 - SPRAG
4 - SPRING

Fig. 221 Park Sprag Reaction Plug And Spring
Fig. 221 Park Sprag Reaction Plug And Spring Location

1 - SPRING CLIP
2 - REACTION PLUG

Fig. 222 Correct Position Of Sprag And Spring
Fig. 222 Correct Position Of Sprag And Spring

1 - SPRAG SHAFT
2 - SPRAG LOCKING LUG
3 - SPRING

Inspect the valves and plugs for scratches, burrs, nicks, or scores. Also inspect the coating on the aluminum valves and plugs (Fig. 223). If the coating is damaged or worn through, the valve (or valve body) should be replaced.

Aluminum valves and plugs should not be sanded or polished under any circumstances. However, minor burrs or scratches on steel valves and plugs can be removed with crocus cloth but do not round off the valve or plug edges. Squareness of these edges is vitally important. These edges prevent foreign matter from lodging between the valves, plugs and bore.

Inspect all the valve and plug bores in the valve body. Use a penlight to view the bore interiors.

Replace the valve body if any bores are distorted or scored. Inspect all of the valve body springs. The springs must be free of distortion, warpage or broken coils.

Trial fit each valve and plug in its bore to check freedom of operation. When clean and dry, the valves and plugs should drop freely into the bores. Valve body bores do not change dimensionally with use. If the valve body functioned correctly when new, it will continue to operate properly after cleaning and inspection. It should not be necessary to replace a valve body assembly unless it is damaged in handling.

Fig. 223 Valve Body Components
Fig. 223 Valve Body Components

1 - GOVERNOR PLUG END PLATE
2 - SHUTTLE VALVE
3 - 1-2 GOVERNOR PLUG
4 - VALVE BODY
5 - REGULATOR VALVE THROTTLE PRESSURE PLUG
6 - SLEEVE
7 - LINE PRESSURE PLUG
8 - RETAINER
9 - 1-2 SHIFT VALVE
10 - 1-2 SHIFT CONTROL VALVE
11 - KICKDOWN LIMIT VALVE
12 - END PLATE
13 - THROTTLE PRESSURE PLUG
14 - KICKDOWN LIMIT VALVE BODY
15 - E-RING
16 - 2-3 SHIFT VALVE
17 - GUIDES
18 - 2-3 GOVERNOR PLUG
19 - PRIMARY SPRING
20 - SHUTTLE VALVE THROTTLE PLUG

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