3 replies to this topic

[Geemax]

Just reinstated engine after major bodywork. Went to reverse out of garage and after moving about 1 metre, there is a loud banging (like a machine gun!) and shaking and drive is lost. Same trying to move forward. If any load is put on, it shakes and bangs but doesn't move.Suspected inner pot joint which was popped to allow engine removal but all looks in place? Have jacked up each side and checked if you can turn the wheel when in gear and both seem locked. Can it be the pot joint is worn and the cage jumping across the grooves? If so, should I renew both sides at once?

[Alpenflitzer]

The joint should be dismantled only if there is reason to believe that it is still serviceable

If you change potjoints it is advisible to change both sides.

Start with one side first and control the potjoint by taking-off the rubber boot. Watch out if all bearing balls are there, how does the run looks like - worn?

What came off when taking off the rubber boot? Grease or oil? If it is oil then the oil seal could be damaged.It is easy to replace. 

 

Overhauling the inner CV Joint (Potjoint)

1. Remove the inboard joint from the final drive unit housing 
2. Remove the rubber boot from the joint. If the boot looks  still ok, clean it and check the flexibility
3. Withdraw the joint inner member and ball cage 'assembly from the joint housing.
4. Dismantle the balls out of the ball cage by inserting a screwdriver between the joint inner member and each ball in turn.
5. Rotate the ball cage until the grooves inside the cage coincide with the lands on the joint inner member, then withdraw the cage from the inner member.
6. Clean all the components of the joint and examine carefully for any signs of wear, damage or corrosion pits.

If any of these conditions are present by a new potjoint!
7. If the joint is in serviceable condition, reassemble the inner member, ball cage and balls in the reverse order of dismantling. Ensure that the long tapered end of the ball cage faces towards the drive shaft end of the inner member.
8. Fit the inner member assembly into the joint housing.
9. Pack the joint with suitable  grease.

 

The circlips must be oK to keep things together.

 

Let´s hope it is not the diff which makes the problems.  
 

[Geemax]

Have just drained oil and no metal present so presuming it is the pot joints. I have dismantled the driveshafts to see if there is any obvious damage - doesn't appear to be.

However the joints do not appear to be identical. One has the taper facing the inside and one seems to be facing the outside? One also seems to be further down the shaft?

Has someone assembled this incorrectly and if so, would it cause the issue?

 

http://s8.photobucke...emax55/library/

[Guess-Works.com]

Yup, someone has assembled the joint incorrectly. From memory the first picture in the series is correctly orientated.