Jeep 1996 Grand Cherokee Service Manual - page 1140
TRANSMISSION AND TRANSFER CASE
CONTENTS
page
page
42/44RE AUTOMATIC TRANSMISSION . . . . . . . . 1
NV231 TRANSFER CASE . . . . . . . . . . . . . . . . . 147
NV249 TRANSFER CASE . . . . . . . . . . . . . . . . . 170
42/44RE AUTOMATIC TRANSMISSION
INDEX
page
page
GENERAL INFORMATION
42/44 RE TRANSMISSION . . . . . . . . . . . . . . . . . . 2
GEARSHIFT MECHANISM . . . . . . . . . . . . . . . . . . 4
RECOMMENDED FLUID . . . . . . . . . . . . . . . . . . . 4
TORQUE CONVERTER—ELECTRONIC
CLUTCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
TRANSMISSION GEAR RATIOS . . . . . . . . . . . . . . 4
TRANSMISSION IDENTIFICATION . . . . . . . . . . . . 4
DESCRIPTION AND OPERATION
3-4 SHIFT SEQUENCE . . . . . . . . . . . . . . . . . . . . . 7
BRAKE TRANSMISSION SHIFT INTERLOCK
MECHANISM . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
CONVERTER CLUTCH ENGAGEMENT . . . . . . . . 7
CONVERTER DRAINBACK VALVE . . . . . . . . . . . . 8
ELECTRONIC GOVERNOR . . . . . . . . . . . . . . . . . 4
GOVERNOR PRESSURE CURVES . . . . . . . . . . . 6
HYDRAULIC CONTROL SYSTEM . . . . . . . . . . . . . 6
OVERDRIVE OFF SWITCH . . . . . . . . . . . . . . . . . 7
QUICK FILL VALVE . . . . . . . . . . . . . . . . . . . . . . . 7
SHIFT VALVE OPERATION . . . . . . . . . . . . . . . . . . 6
DIAGNOSIS AND TESTING
AIR TESTING TRANSMISSION CLUTCH AND
BAND OPERATION . . . . . . . . . . . . . . . . . . . . . 16
ANALYZING ROAD TEST . . . . . . . . . . . . . . . . . . 12
AUTOMATIC TRANSMISSION DIAGNOSIS . . . . . . 9
BRAKE TRANSMISSION SHIFT INTERLOCK . . . 11
CAUSES OF BURNED FLUID . . . . . . . . . . . . . . . 10
CHECKING FLUID LEVEL AND CONDITION . . . . 9
CONVERTER HOUSING FLUID LEAK
DIAGNOSIS . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
CONVERTER STALL TEST . . . . . . . . . . . . . . . . . 15
DIAGNOSIS TABLES AND CHARTS—RE
TRANSMISSION . . . . . . . . . . . . . . . . . . . . . . . 19
EFFECTS OF INCORRECT FLUID LEVEL . . . . . 10
FLUID CONTAMINATION . . . . . . . . . . . . . . . . . . 10
GEARSHIFT CABLE . . . . . . . . . . . . . . . . . . . . . . 11
HYDRAULIC PRESSURE TEST . . . . . . . . . . . . . 13
OIL COOLER FLOW CHECK . . . . . . . . . . . . . . . 11
OVERDRIVE ELECTRICAL CONTROLS . . . . . . . 11
PARK/NEUTRAL POSITION SWITCH . . . . . . . . . . 9
PRELIMINARY DIAGNOSIS . . . . . . . . . . . . . . . . . 9
ROAD TESTING . . . . . . . . . . . . . . . . . . . . . . . . . 12
STALL TEST ANALYSIS . . . . . . . . . . . . . . . . . . . 15
TRANSMISSION CONTROL CABLE
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . 12
SERVICE PROCEDURES
ALUMINUM THREAD REPAIR . . . . . . . . . . . . . . 31
CONVERTER DRAINBACK CHECK VALVE
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
FLUID AND FILTER REPLACEMENT . . . . . . . . . 30
FLUID LEVEL CHECK . . . . . . . . . . . . . . . . . . . . 29
FLUSHING COOLERS AND TUBES . . . . . . . . . . 31
TRANSMISSION FILL PROCEDURE . . . . . . . . . . 31
REMOVAL AND INSTALLATION
BRAKE TRANSMISSION SHIFT INTERLOCK . . . 35
GEARSHIFT CABLE . . . . . . . . . . . . . . . . . . . . . . 35
GOVERNOR SOLENOID AND PRESSURE
SENSOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
OUTPUT SHAFT FRONT BEARING . . . . . . . . . . 35
OUTPUT SHAFT REAR BEARING . . . . . . . . . . . 34
OVERDRIVE HOUSING BUSHING . . . . . . . . . . . 34
OVERDRIVE UNIT . . . . . . . . . . . . . . . . . . . . . . . 40
PARK LOCK . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
PARK/NEUTRAL POSITION SWITCH . . . . . . . . . 33
SPEEDOMETER SERVICE . . . . . . . . . . . . . . . . . 32
TORQUE CONVERTER . . . . . . . . . . . . . . . . . . . 44
TRANSMISSION COOLER LINE AND FITTINGS . 39
TRANSMISSION COOLER . . . . . . . . . . . . . . . . . 40
TRANSMISSION/OVERDRIVE . . . . . . . . . . . . . . 42
VALVE BODY . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
YOKE SEAL REPLACEMENT . . . . . . . . . . . . . . . 33
ZJ
TRANSMISSION AND TRANSFER CASE
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