Isuzu Rodeo UE. Manual - part 80

4C–29

DRIVE SHAFT SYSTEM

Propeller Shaft

General Description

401RX002

Legend

(1) Front Propeller Shaft
(2) Rear Propeller Shaft;

Aluminum Tube with Spline Yoke Type

(3) Rear Propeller Shaft;

Aluminum Tube with Flange Yoke Type

(4) Rear Propeller Shaft;

Steel Tube Type (for 4

×

4, 6VD1, A/T model)

Torque is transmitted from the transmission to the axle
through propeller shaft and universal joint assembles. All
propeller shafts are the balanced tubular type. A splined
slip joint is provided in some drivelines.

f

Since the propeller shaft is total balanced carefully,
welding or any other modification are not permitted.

f

Alignment marks should be applied to each propeller
shaft before removal.

f

Be sure vehicle is stopped, engine is not running,
brake is secured and vehicle is secured to prevent
injury.

f

Be careful not to grip the propeller shaft tube too
tightly in the bise as this will be cause deformation.

4C–30

DRIVE SHAFT SYSTEM

Phasing
The propeller shaft is designed and built with the yoke
lugs (ears) in line with each other. This design produces
the smoothest running shaft possible, called
phasing.Vibration can be caused by an out–of–phase
propeller shaft.The propeller shaft will absorb vibrations
from speeding up and slowing down each time the
universal joint goes around.This vibration would be the
same as a person snapping rope and watching the ”wave”
reaction flow to the end.A propeller shaft working in phase
would be similar to two persons snapping a rope at the
same time, and watching the ”waves” meet and cancel
each other out.In comparison, this would be the same as
the universal joints on a propeller shaft.A total
cancellation of vibration produces a smooth flow of power
in the driveline.It is very important to apply a reference
mark to the propeller shaft before removal, to assure
installation alignment.

Universal Joint

401RW015

Legend

(1) Spider
(2) Yoke

A universal joint consists of two Y-shaped yokes
connected by a crossmember called a spider.
The spider is shaped like a cross. Universal joints are
designed to handle the effects of various loadings and
front or rear axle windup during acceleration. Within the
designed angle variations, the universal joint will operate
efficiently and safely. When the design angle is changed
or exceeded the operationallife of the joint may decrease.
The bearings used in universal joints are of the needle
roller type. The needle rollers are held in place on the
trunnions by round bearing cups. The bearing cups are
held in the yokes by snap rings.

4C–31

DRIVE SHAFT SYSTEM

Diagnosis of Propeller Shaft and Universal Joint

Condition

Possible cause

Correction

Universal Joint Noise.

Worn universal joint bearings.

Replace.

Improper lubrication.

Lubricate as directed.

Loose flange bolts.

Tighten to specifications.

Ping, Snap, or Click in Drive Line
(Usually Heard on Initial Load after
the Transmission is in Forward or
Reverse Gear)

Loose bushing bolts on the rear
springs or upper and lower control
arms.

Tighten the bolts to specified torque.

Reverse Gear)

Loose or out-of-phase end yoke.

Remove end yoke, turn 180 degrees
from its original position, lubricate the
splines and reinstall. Tighten the
bolts and pinion nut to specified
torque.

Knocking or Clanking Noise in the
Driveline when in High or Neutral
Gear at 16km/h(10mph)

Worn or damaged universal joint

Replace the universal joint.

Squeak

Lack of lubricant.

Lubricate joints and splines. Also
check for worn or brinelled parts.

Shudder on Acceleration (Low
Speed)

Loose or missing bolts at the flanges.

Replace or tighten bolts to specified
torque.

Incorrectly set front joint angle.

Install shim under the transmission
support mount to change the front
joint angle.

Worn universal joint.

Replace.

Vibration

Incorrect shaft runout.

Replace.

Shaft out of balance.

Adjust.

Transmission rear housing bushing,
transfer case housing bushing worn.

Replace.

Yoke spline jammed.

Replace.

Excessive Leak at the Front Spline
Yoke of Rear Propeller Shaft

Rough surface on splined yoke;
burred nicked or worn.

Replace the seal. Minor burrs can be
Smoothed by careful use of crocus
cloth or fine stone honing. Replace
the yoke if badly burred.

Defective transmission rear oil seal.

Replace the transmission rear oil
seal and replenish the transmission
oil.

4C–32

DRIVE SHAFT SYSTEM

Front Propeller Shaft

Front Propeller Shaft and Associated Parts

401RW093

Legend

(1) Bolt, Nut and Washer (Front Axle Side)

(2) Front Propeller Shaft
(3) Bolt, Nut and Washer (Transfer Side)

Removal

1. Raise the vehicle on a hoist.

NOTE: Apply alignment marks on the flange at the front
propeller shaft both front and rear side. 

401RS020

2. Remove bolt, nut and washer (Front axle side).
3. Remove bolt, nut and washer (Transfer side).
4. Remove front propeller shaft.

Installation

NOTE: Never install the shaft assembly backwards.
Never insert bar between yoke lugs when tightening or
removing bolts.  Completely remove the black paint from
the connecting surface of flange coupling on each end of
propeller shaft. Clean so that no foreign matter will be
caught in between.

1. Align the mark which is applied at removal. Install

front propeller shaft and tighten the bolts to the
specified torque.

Torque: 63 N·m  (46 lb ft)