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MODULE CODE&NAME: ATCPR401NAME: PROPELLER SHAFT, DRIVE SHAFTS AND JOINTS REPAIRING
Learning units
LU 1: Dismount propeller shaft, drive shafts and joints
LU2: Repair propeller shaft and/or joints
LU3: Repair drive shafts and joints
LU4: Fix and test propeller shaft, drive shafts and joints
O.INTRODUCTION
O.1. DRIVE LINE ASSEMBLY
The drive line assembly has several important functions. It must perform the following:
• Send turning power from the transmission to the rear axle assembly.
• Flex and allow up-and-down movement of the rear axle assembly.
• Provide a sliding action to adjust for changes in drive line length.
• Provide a smooth power transfer.
The drive line assembly consists of the following:
• Slip yoke—connects the transmission output shaft to the front universal joint.
• Front universal joint—the swivel connection that fastens the slip yoke to the drive shaft.
• Drive shaft—a hollow metal tube that transfers turning power from the front universal joint
to the rear universal joint.
• Rear universal joint—a flex joint that connects the drive shaft to the differential yoke.
• Rear yoke—holds the rear universal joint and transfers torque to the gears in the rear axle
assembly.
PROPELLER SHAFT REMOVAL PROCEDURES
1. Place alignment marks and remove the propeller shaft.
2. Place alignment marks before removing the spider.
, 3. Using a snap ring pliers, remove the snap ring.
4. Slightly tapping the yoke shoulder using a brass hammer, remove the bearing. Remove
the remaining bearings in the same way.
5. If difficult to remove, clamp the yoke side in a vise and tap off the needle bearing, using
a proper tool.
6. Disassemble the universal joint parts.
As axles move up and down, universal joints allow drive angles to change
without binding propeller shaft
I.1. INSPECTION PROCEDURE
1. Visual check.
Check the disassembled parts for wear or crack.
Replace them if necessary.
2. Spider outer diameter (mm).
Standard 16.668
Limit 16.647
3. Clearance between the spider and bearing.
4. Propeller shaft runout
Using a dial indicator, measure propeller shaft runout by turning the shaft. If runout exceeds
limit, replace the propeller shaft or correct it using a press.
Standard 0.03 - 0.098 mm
Limit 0.25 mm
Inspection Procedure
, 1. Visual check.
Check the disassembled parts for wear or crack.
Replace them if necessary.
2. Spider outer diameter (mm).
Standard 16.668
Limit 16.64
Propeller shaft runout
Using a dial indicator, measure propeller shaft runout by turning the shaft. If runout exceeds
limit, replace the propeller shaft or correct it using a press.
Limit 0.4 mm
I.2. POSSIBLE CAUSE OF VIBRATION.
Drift away of balance weights.
Excessive runout of the propeller shaft.
Using normal bolts.
Excessive wear of the universal joint.
Sticks in sleeve joint.
Drive angle changes in universal joints or cross causes
vibration and can be detected around 60~100 km/h.
I.3. REMOVAL PROCEDURE
1. Place alignment marks and remove the propeller shaft.
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