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TJ
181 FBI AXLE . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
194 RBI AXLE . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
GENERAL INFORMATION
LUBRICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 3
PROPELLER SHAFT JOINT ANGLE . . . . . . . . . . . 2
PROPELLER SHAFT JOINTS . . . . . . . . . . . . . . . . 1
PROPELLER SHAFTS . . . . . . . . . . . . . . . . . . . . . 1
RUNOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
UNBALANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
VIBRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
PREPARATION . . . . . . . . . . . . . . . . . . . . . . . . . 6
GENERAL INFORMATION
PROPELLER SHAFTS
The function of a propeller shaft is to transmit
power from one point to another. The shaft is
designed to send torque from the transmission and
transfer case to the drive axles (Fig. 1).
The propeller shaft must operate through con-
stantly changing relative angles between the trans-
mission and axle. It must also be capable of changing
length while transmitting torque. The axle rides sus-
pended by springs in a floating motion. The propeller
shaft must be able to change operating angles when
going over various road surfaces. This is done
through universal joints, which permit the propeller
shaft to operate at different angles. The slip joints (or
yokes) permit contraction or expansion (Fig. 1).
Tubular propeller shafts are balanced by the man-
ufacturer with weights spot welded to the tube.
DIFFERENTIAL AND DRIVELINE
CONTENTS
page
PROPELLER SHAFTS
page
DIFFERENTIAL AND DRIVELINE
216 RBI REAR AXLE . . . . . . . . . . . . . . . . . . . . . . 84
PROPELLER SHAFTS . . . . . . . . . . . . . . . . . . . . . . 1
INDEX
FRONT PROPELLER SHAFT . . . . . . . . . . . . . . . . 8
REAR PROPELLER SHAFT . . . . . . . . . . . . . . . . . 8
DOUBLE CARDAN JOINT . . . . . . . . . . . . . . . . . 10
SINGLE CARDAN UNIVERSAL JOINT . . . . . . . . . 9
SINGLE AND DOUBLE CARDAN JOINT . . . . . . . 13
ADJUSTMENTS
AXLE PINION ANGLE ADJUSTMENT . . . . . . . . . 13
TORQUE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
PROPELLER SHAFT . . . . . . . . . . . . . . . . . . . . . 14
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.
Before undercoating a vehicle, the propeller
shaft and the U-joints should be covered ot pre-
vent an out-of-balance condition and driveline
vibration.
CAUTION: Use
original
parts for attaching the propeller shafts. The speci-
fied torque must always be applied when tightening
the fasteners.
PROPELLER SHAFT JOINTS
Two different types of propeller shaft joints are
used in TJ vehicles (Fig. 2) and (Fig. 3). None of the
joints are servicible. If worn or damaged, they must
be replaced as a complete assembly.
3 - 1
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equipment
replacement
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