Isuzu KB P190. Manual - part 106

4A-8  PROPELLER SHAFT 

Torque Specifications 

N

⋅m (kgf⋅m/lb⋅ft) 

 

 
 
 
 

 

RUW54ASF000501 

 

PROPELLER SHAFT  4A-9 

Rear Propeller Shaft 

General Description 
4×

×

×

×2 (Except High Ride Suspension) Model 

 

F04R300001 

 
4×

×

×

×2 (High Ride Suspension), 4×

×

×

×4 Model 

 

401R300007 

 

4A-10  PROPELLER SHAFT 

4×

×

×

×2 M/T AR-5, 4×

×

×

×2 A/T 4L60-E Model 

 

 
 
 
 
 
 

 

 

RTW64ASF000101 

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.

 

 

 

 

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 (2) connected 
by a crossmember called a spider (1). 
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. 

PROPELLER SHAFT  4A-11 

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.