A/T - ZF4HP22 Doesn't Downshift to 1ST Gear
86peugeot03BULLETIN NO. 184
DATE: June, 1986
SUBJECT: 1986 ZF4HP22 AUTOMATIC TRANSMISSION, NO DOWNSHIFT TO 1ST GEAR.
COMPLAINT
Transmission will not downshift into 1st gear after coming to a stop. This condition usually occurs when the transmission is warm to hot, under light to medium acceleration. The vehicle will move forward in 2nd gear for a short distance and then a "thump" may be felt as the transmission downshifts into 1st gear.
NOTE: This condition may be mis-diagnosed as a hesitation on initial take-off.
PARTS REQUIRED
Governor spacer: 0025.01
Governor "C" clip: 0025.02
Tailshaft housing gasket: 2209.25
SPECIAL TOOLS REQUIRED
Front cross member support bolts (-).1511C P/N 9764.24 Drive shaft retainer plate (-).0403SZ P/N 9762.13
REPAIR PROCEDURES
- Place gearshift selector in park.
- Drain transmission fluid.
- Place a transmission jack under transmission pan.
- Disconnect steering coupling from P/S, pinion valve.
- Lower engine cross member using support bolts.
SEDANS
- Disconnect front exhaust pipe to catalytic converter clamp.
- Remove differential side mounting bolts.
- Disconnect the torque tube from the transmission (insert the drive shaft retainer plate (-).0403SZ P/N 9762.13).
- Slide torque tube back.
STATION WAGONS
- Remove catalytic converter heatshield.
- Disconnect front exhaust pipe from:
a) transmission bracket
b) catalytic converter
- Remove transmission rear support mounting bolts.
- Remove torque tube to transmission mounting bolts.
- Place jack stands under each axle shaft housings.
- Remove parking brake cable from triangle arm brackets and remove clamps.
- Remove rear brake line to torque tube retaining clip.
- Remove sway bar to body links mounting bolts.
- Mark (scribe) location of brake compensator adjustment in relation to torque tube mounting.
- Remove rear brake compensator from torque tube.
- Remove shock absorbers lower mounting bolts.
- Remove "Panhard" rod right side mounting bolt.
- Lower both straps linking front seat tracks (U-shaped straps below center of torque tube).
- Lower transmission jack to tilt transmission and slide torque tube and rear axle back.
- Remove transmission rear support assembly.
FIGURE 1:
- Remove the cardan joint (1) by removing the center allen screw and washer.
- Remove exhaust support brackets (2).
SEDANS AND STATION WAGONS
- Remove speedometer cable and gear (a).
- Remove tailshaft housing.
- Place gearshift selector in neutral.
- Turn output shaft so that governor assembly is facing lower right corner of transmission.
- Place a shop towel into lower right corner of transmission.
- Remove governor "C" clip, weight and spacer.
- Re-install using a new governor spacer P/N 0025.01, original weight and new "C" clip P/N 0025.02.
- Remove shop towel.
- Place gearshift selector in park.
FIGURE 2:
- Re-install tailshaft housing, making sure that the two centering dowels (5) are in place. Use a new pre-oiled gasket (6) P/N: 2209.25.
- Torque the tailshaft housing bolts to 2.5 mdaN (18.13 ft.lbs.)
STATION WAGONS
- Re-install the cardan joint (1) the washer and allen screw. Torque to 1.25 mdaN (9.06 ft.lbs.) then stake screw.
- Re-install transmission rear support assembly and main engine cross member.
- Bolt torque tube to transmission and torque to 7 mdaN (50.75 ft.lbs.)
- Pack the sphere with bearing grease.
SEDANS AND STATION WAGONS
- Re-install previously removed components in reverse order. Torque:
Rear shock absorbers : 5.75 mdaN (41.68 ft.lbs.)
Panhard rod - body side : 9.00 mdaN (65.25 ft.lbs.)
Torque tube to transmission: 7.00 mdaN (50.75 ft.lbs.)
Main cross member (engine) : 5.72 mdaN (37.70 ft.lbs.)
Differential : 3.75 mdaN (27.18 ft.lbs.)
Sway bar links : 4.50 mdaN (32.62 ft.lbs.)
Power steering pinion valve
to coupling : 2.50 mdaN (18.12 ft.lbs.)
Strap linking front seat
tracks : 1.75 mdaN (12.68 ft.lbs.)
- Refill automatic transmission
WARRANTY INFORMATION
Damage Code : 2209.25
Operation NO. : Sedans: 03.399.0
S. Wagons: 03.399.0
Time Allowance: Sedans: 2.50 Hours
S. Wagons: 4.00 Hours