Jeep Cherokee (XJ): Gearshift mechanism. Converter drainback valve. Brake transmission shift interlock mechanism

Jeep Cherokee (XJ) 1984 - 2001 Service Manual > Transmission and transfer case > Automatic transmission-30RH > Description and operation > Gearshift mechanism. Converter drainback valve. Brake transmission shift interlock mechanism

Gearshift mechanism

DESCRIPTION

The shift mechanism is cable operated and provides six shift positions. The shift indicator is located on the console next to the gear shift. The shift positions are:

  •  Park (P)
  •  Reverse (R)
  •  Neutral (N)
  •  Drive (D)
  •  Manual Second (2)
  •  Manual Low (1)

OPERATION

Manual low (1) range provides first gear only. Over run braking is also provided in this range. Manual second (2) range provides first and second gear only.

Fig. 50 Governor
Fig. 50 Governor

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

Drive range provides first, second, and third gear ranges.

Converter drainback valve

DESCRIPTION

The drainback valve is located in the transmission cooler outlet (pressure) line.

OPERATION

The valve prevents fluid from draining from the converter into the cooler and lines when the vehicle is shut down for lengthy periods. Production valves have a hose nipple at one end, while the opposite end is threaded for a flare fitting. All valves have an arrow (or similar mark) to indicate direction of flow through the valve.

Brake transmission shift interlock mechanism

DESCRIPTION

The Brake Transmission Shifter/Ignition Interlock (BTSI), is a cable and solenoid operated system. It interconnects the automatic transmission floor mounted shifter to the steering column ignition switch (Fig. 54).

OPERATION

The system locks the shifter into the PARK position.

The Interlock system is engaged whenever the ignition switch is in the LOCK or ACCESSORY position.

An additional electrically activated feature will prevent shifting out of the PARK position unless the brake pedal is depressed at least one-half an inch. A magnetic holding device in line with the park/brake interlock cable is energized when the ignition is in the RUN position. When the key is in the RUN position and the brake pedal is depressed, the shifter is unlocked and will move into any position. The interlock system also prevents the ignition switch from being turned to the LOCK or ACCESSORY position (Fig. 55) unless the shifter is fully locked into the PARK position.

Fig. 51 Governor-No Output Shaft Rotation
Fig. 51 Governor-No Output Shaft Rotation

1 - GOVERNOR PRESSURE
2 - LINE PRESSURE
3 - OUTPUT SHAFT
4 - GOVERNOR
5 - VENT

Fig. 52 Governor-Moderate Output Shaft Rotation
Fig. 52 Governor-Moderate Output Shaft Rotation

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