ISUZU TF SERIES 2004 Workshop Manual

PROPELLER SHAFT 4A-5

401R300006


Torque Specifications
N
m (kgf
m/lb
ft)
RTW34ASF000301

4A-6 PROPELLER SHAFT
Front Propeller Shaft

mm(in)
4

4 Model
Engine Model 4JA1-T(L) 4JA1-TC 4JH1-TC C24SE 6VE1
Transmission Type 5M/T (MUA) 5M/T
(MUA) 4A/T 5M/T
(MUA) 5M/T
(MUA) 4A/T
Wheel Base Long Long Long Long Long Long
Outside Diameter mm 40 40 40 40 40 40
(in) (1.57) (1.57) (1.57) (1.57) (1.57) (1.57)
Inside Diameter mm 32 32 32 32 32 32
(in) (1.26) (1.26) (1.26) (1.26) (1.26) (1.26)
Length (L) mm 607 607 676 586 586 607
(in) (25.90) (25.90) (26.61) (23.07) (23.07) (23.90)
Fix Bolt Size T/F M10 M10 M10 M10 M10 M10
Axle M10 M10 M10 M10 M10 M10


RTW34ASF000101

PROPELLER SHAFT 4A-7
Torque Specifications

RTW34ASF000201

4A-8 PROPELLER SHAFT
Rear Propeller Shaft
General Description
4




2 (Except High Ride Suspension) Model
F04R300001

4





2 (High Ride Suspension), 4





4 Model
401R300007

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.

Since the propeller shaft is total balanced carefully,
welding or any other modification are not permitted. 
Alignment marks should be applied to each
propeller shaft before removal.

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

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

PROPELLER SHAFT 4A-9


Phasing
The propeller shaft is designer 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 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.


401RW015
Universal Joint
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 operational life 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 inside the yokes by snap rings.

4A-10 PROPELLER SHAFT
Diagnosis of Propeller Shaft and
Universal Joint

Condition Possible cause Correction
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. Leak at the Front Slip Yoke (An
Occasional Drop of Lubricant
Leaking from the Splined Yoke is
Normal)
Defective transmission rear oil seal. Replace the transmission rear oil
seal and replenish the transmission
oil.
Worn universal joint bearings. Replace.
Improper lubrication. Lubricate as directed.
Universal Joint Noise.
Loose flange bolts. Tighten to specifications.
Loose bushing bolts on the rear
springs or upper and lower control
arms. Tighten the bolts to specified
torque. Ping, Snap, or Click in Drive Line
(Usually Heard on Initial Load after
the Transmission is in Forward or
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.
Squeak Lack of lubricant. Lubricate joints and splines. Also
check for worn or brinelled parts.
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.
Shudder on Acceleration (Low
Speed)
Worn universal joint. Replace.
Incorrect shaft runout. Replace.
Shaft out of balance. Adjust.
Transmission rear housing bushing,
transfer case housing bushing worn.Replace.
Vibration
Yoke spline jammed. Replace.

PROPELLER SHAFT 4A-11
Removal and Installation

401RS023
Removal
1. Raise the vehicle on a hoist.
NOTE:
Apply alignment marks on the flange at the rear
propeller shaft both front and rear side.


2. Remove center bearing fixing bolt.
3. Remove rear axle side bolt, nut and washer.
4. Remove rear propeller shaft.

NOTE:
Plug the hole of the transmission rear end to prevent oil
leakage.

401L100007
Installation
NOTE:
Cover the slip yoke with cloth to avoid damage to the oil seal
contact surface, when removing propeller shaft from
transmission. Do not damage the oil seal contact surface of
slip yoke with other parts at removal and installation.
Completely remove the dust or foreign matter from the
connecting surface of flange coupling on each end of the
propeller shaft.

1.
Align the mark which is applied at removal and insert the
propeller shaft in the transmission.
2. Install rear propeller shaft and tighten the bolts to the
specified torque.
Torque: 63 N




m(6.4kg




m/46 lb




ft)
3. Install center bearing and tighten the bolts to the specified
torque.
Torque: 69 N





m(7.0kg





m/51 lb





ft)

4A-12 PROPELLER SHAFT
Universal Joint Disassembly
401R300002

Legend
(1). Snap Ring
(2). Needle Roller Bearing
(3). Spider
(4). Propeller Shaft

PROPELLER SHAFT 4A-13

401R300003



1. Remove the snaprings.


Apply alignment marks on the yokes of the universal
joint.


401R300004


2. Remove the needle roller bearings.

Tap out the bearing by gently striking the shoulder of the
yoke, using a mallet or a copper hammer.

3. Remove the spider.

Make sure of proper position for reinstallation b
y
applying setting marks.
4. Remove the propeller shaft.

4A-14 PROPELLER SHAFT
INSPECTION AND REPAIR
Make all necessary adjustment, repairs, and part replacements if wear, damage, or other problems are discovered
during inspection.





Visual Check
Inspect following parts for wear, damage, or other abnormal
conditions.
Spider
Needle roller bearing
Yoke
Flange
Center bearing
Cushioning rubber
Bracket

401RS007


Outside Diameter of Spider Pins
mm(in)

Standard Limit
17 (0.67) 16.99 (0.669)