Differential And Driveline - Jeep cherokee 2000 Service Manual

XJ
PROPELLER SHAFTS . . . . . . . . . . . . . . . . . . . . . . . 1
TUBE, 181, AND 186 FBI AXLE . . . . . . . . . . . . . . 16
DESCRIPTION AND OPERATION
PROPELLER SHAFT . . . . . . . . . . . . . . . . . . . . . . . 1
PROPELLER SHAFT JOINTS . . . . . . . . . . . . . . . . . 2
PROPELLER SHAFT JOINT ANGLE . . . . . . . . . . . . 3
DIAGNOSIS AND TESTING
VIBRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
UNBALANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
RUNOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
SERVICE PROCEDURES
DRIVELINE ANGLE MEASUREMENT
PREPARATION . . . . . . . . . . . . . . . . . . . . . . . . . . 6
PROPELLER SHAFT ANGLE MEASUREMENT. . . . 6
REMOVAL AND INSTALLATION
FRONT PROPELLER SHAFT . . . . . . . . . . . . . . . . . 8
DESCRIPTION AND OPERATION
PROPELLER SHAFT
DESCRIPTION
A propeller shaft (Fig. 2) is the shaft which con-
nects the transmission/transfer case to the axle dif-
ferential. This is the link through which the engine
power is transmitted to the axle.
The propeller shaft is designed and built with the
yoke lugs in line with each other which is called zero
phasing. This design produces the smoothest running
condition, an out-of-phase shaft can cause a vibra-
tion.
Tubular propeller shafts are balanced by the man-
ufacturer with weights spot welded to the tube.
PRECAUTIONS
Use the exact replacement parts when installing
the propeller shafts. The use of the correct replace-

DIFFERENTIAL AND DRIVELINE

TABLE OF CONTENTS
page
PROPELLER SHAFTS
TABLE OF CONTENTS
page
DIFFERENTIAL AND DRIVELINE
194 RBI AXLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
8 1/4 REAR AXLE . . . . . . . . . . . . . . . . . . . . . . . . 103
REAR PROPELLER SHAFT . . . . . . . . . . . . . . . . . . 8
DISASSEMBLY AND ASSEMBLY
SINGLE CARDAN UNIVERSAL JOINT . . . . . . . . . . 9
DOUBLE CARDAN JOINT. . . . . . . . . . . . . . . . . . . 11
CLEANING AND INSPECTION
PROPELLER SHAFT . . . . . . . . . . . . . . . . . . . . . . 14
ADJUSTMENTS
REAR AXLE PINION INPUT ANGLE . . . . . . . . . . . 15
FRONT AXLE PINION INPUT ANGLE . . . . . . . . . . 15
SPECIFICATIONS
PROPELLER SHAFTS AND U-JOINTS. . . . . . . . . 15
SPECIAL TOOLS
PROPELLER SHAFT . . . . . . . . . . . . . . . . . . . . . . 15
ment parts helps to ensure safe operation. All fasten-
ers must be torqued to the specified values for safe
operation.
Also make alignment reference marks (Fig. 1) on
the propeller shaft yoke and axle, or transmission,
yoke prior to servicing. This helps to eliminate possi-
ble vibration.
CAUTION: Do not allow the propeller shaft to drop
or hang from any propeller shaft joint during
removal. Attach the propeller shaft to the vehicle
underside with wire to prevent damage to the joints.
OPERATION
The propeller shaft must operate through con-
stantly changing relative angles between the trans-
mission and axle when going over various road
surfaces. It must also be capable of changing length
while transmitting torque. The axle rides suspended
by springs in a floating motion.This is accomplished
through universal joints, which permit the propeller
3 - 1
page
page