422137 Disassembling and assembling rear drive shaft
WM 422137 Disassembling and assembling rear drive shaft
Tools
Technical values
Information
Component overview
Single drive shaft
Tools and materials
Tools
Disassembling drive shaft
Disassembly
WARNING
Objects or loads falling down
- Risk of squashing or crushing
-> Secure components to prevent them from falling down.
The joint on the transmission side and the joint on the wheel side of the rear axle can be replaced. The entire drive shaft must be replaced if the profile shaft is defective.
Inner joint (transmission side)
1. Remove the circlip (on transmission side) using circlip pliers Nr.68.
Information
Before removing the bellows, mark the position of the bellows on the drive shaft with a coloured pen (see also ]]Assembling drive shaft, Step 4.1[[).
2. Remove the bellows from the inner joint and slide it back.
Removing bellows
3. Clamp the drive shaft (use aluminium protective jaws). Position an aluminium mandrel on the ball hub (star-shaped inner ring) -arrow- and remove the joint pin (inner joint) by hitting it several times with a hammer -see illustration-.
Removing joint (transmission side)
4. Remove the hose clamps and bellows and take them off the profile shaft.
Outer joint (wheel side)
Removing bellows
5. Clamp the drive shaft (use aluminium protective jaws). Position an aluminium mandrel on the ball hub (star-shaped inner ring) -arrow- and remove the joint (outer joint) by hitting it several times with a hammer -see illustration-.
Removing joint (wheel side)
Assembling drive shaft
Assembly
WARNING
Objects or loads falling down
- Risk of squashing or crushing
-> Secure components to prevent them from falling down.
The drive shaft is assembled in reverse order.
Check all parts to be re-used carefully.
Always replace the removed joints.
Before fitting the joint, slide all bellows, hose clamps and other clamps onto the profile shaft.
Use new circlips and ensure that they are seated correctly.
Use a new protective ring (on transmission side). Check that it is fitted correctly.
1. Clamp the new joint (use aluminium protective jaws).
2. Carefully slide the new circlip into the groove on the profile shaft from the side.
3. Insert the profile shaft into the joint. Press the circlip together (pre-centre it) as required so that the profile shaft can be inserted easily when you tap it with a rubber hammer. Hold the profile shaft and joint pin with both hands and fit the joint pin onto the profile shaft under the workshop press until the pressure increases (this is as far as it can go). Check the pressure gauge! => Contact force: +20 kN Do not exceed the maximum force for pressing in joints (20 kilonewtons/2 tonnes)!
The procedure for fitting both joints is identical.
Information
- Do not use cleaning agents on the joints (grease thinners!).
- Always replace the removed joint at least during assembly.
- Press the grease with a sufficient amount of force into the ball tracks of the joint.
- Make sure that only a small amount of grease gets into the bellows. This grease is not relevant for the actual lubrication of the joint.
Greasing joints:
Grease the joints with special grease (refer to parts listings). The original grease quantities for the individual joints are specified in the following table.
Joint on transmission side: Grease the joint using the quantities of grease specified in the table. The complete drive shaft is supplied ex-works with the quantities of grease specified in the table. Before sliding on the bellows, remove excess grease using a lint-free cloth. Push the required amount of grease through the joint to the outside. Then grease the inside of the joint.
Greasing inside of drive shaft (shown as an example)
Joint pin on wheel side: Grease the joint using the quantities of grease specified in the table. The complete drive shaft is supplied ex-works with the quantities of grease specified in the table. Before sliding on the bellows, remove excess grease using a lint-free cloth. Push the required amount of grease through the joint to the outside. Then grease the inside of the joint.
Greasing outside of drive shaft
Information
Position the new bellows
- at the marking you made earlier on the drive shaft (see also ]]Disassembling drive shaft, Step 1[[).
- Always comply with the specified dimension.
4. Fit the small hose clamps for the two bellows. If the bellows are fitted correctly, the groove -A- will be visible.
Grooves on drive shaft (shown as an example)