2500 4x2 Pickup V8-318 5.2L Magnum (1994)
Governor: Customer Interest
A/T Governor - Delayed Upshift
NO: 21-19-94
GROUP: Transmission
DATE: Sep. 30, 1994
SUBJECT:
Delayed Upshift - 4-Speed (Hydraulic Governor) Automatic Transmission
MODELS:
1992 - 1994
(AB)
Ram Van/Ram Wagon
1992 - 1993
(AD)
Ram Pickup, Ram Chassis
1992 - 1994
(AN)
Dakota/Dakota Chassis Cab
1994
(BR)
Ram Truck
1993 - 1994
(ZJ)
Grand Cherokee/Grand Wagoneer
NOTE:
THIS BULLETIN APPLIES TO VEHICLES EQUIPPED WITH A 4-SPEED (HYDRAULIC GOVERNOR) AUTOMATIC TRANSMISSION
(42RH/46RH).
SYMPTOM/CONDITION:
Delayed upshift for about 1/4 mile in cold weather (32 degrees F and below). This condition is most noticeable after the vehicle has been parked for 8 or
more hours.
DIAGNOSIS:
Allow vehicle to set for at least 8 hours. With the 100 psi Test Gauge C-3292 connected to the governor pressure port, start the vehicle and put the
transmission into Drive. Slowly increase vehicle speed. The governor pressure should increase in proportion to vehicle speed. Disconnect test gauge
C-3292 and then drive vehicle for about 1/4 to 1/2 mile. If the vehicle does not upshift within this time period and/or the governor pressure does not
match the vehicle speed, perform the following repair.
PARTS REQUIRED:
3
4461011
Seal Ring - Transmission Governor Drive (Cast Iron)
REPAIR PROCEDURE:
This bulletin involves replacing teflon governor drive seal rings with cast iron seal rings.
1.
Shift transmission into Park, raise the vehicle.
2.
Remove transmission oil pan, remove gasket, drain oil and reinstall pan.
3.
Mark propeller shaft universal joint and axle pinion yoke for alignment reference at installation.
4.
Disconnect and remove propeller shaft.
5.
Support transmission with transmission jack.
6.
Remove rear crossmember.
7.
Remove vehicle speed sensor and speedometer adapter.
8.
Remove transfer case.
9.
Remove bolts attaching overdrive unit to transmission.
CAUTION:
SUPPORT THE OVERDRIVE UNIT WITH A JACK BEFORE MOVING IT REARWARD. THIS IS NECESSARY TO PREVENT DAMAGING
THE INTERMEDIATE SHAFT. DO NOT ALLOW THE SHAFT TO SUPPORT THE ENTIRE WEIGHT OF THE OVERDRIVE UNIT.
