SEAT Workshop Service and Repair Manuals

Repair drive shaft with constant velocity joint

Lubricate articulations

t	For reasons of quality, when repairing drive shafts, or if a dustguard must be replaced, thoroughly clean the constant velocity joints, remove all grease from the joints on the gear side and joints on the wheel side; grease the joints again with the new grease mentioned in the spare parts manual.

t	According to the TL 738 norm , the new grease will only be used in the joint on the wheel side. This grease is not compatible with that of the gearbox side of the ball joint, high temperature grease TL52133 (spare part Nº: G.052.133.A2 / A3).

t	To move a vehicle from which the drive shaft has been removed, previously assemble an exterior joint and tighten it to a torque of 50 Nm; the weight of the vehicle itself will be excessive, which will damage the bearing and shorten its useful life.

–	Removing and fitting the articulated half shafts → Chapter.

1 -	Securing ring

q

Replace

q	Detach and fit with pliers -A-81124-

q	Make sure it is properly positioned.

2 -

Joint

q

Replace

q	Remove the protection layer and attach it to the articulation

3 -	Inner constant velocity joint

q	Always replace the assembly.

q	Releasing → Fig.

q	Insertion → Fig.

q	Lubricate articulations →

q	Verification → Chapter

4 -	Plate spring

q	Note installation position → Fig.

q	Cogs on the Ø interior.

q	Fitting position: Ø the largest (concave side) rests on the constant velocity joint.

5 -	Dust guard for interior constant velocity joint

q	Ensure that there is no friction damage or wear

q	Take out using a punch.

q	Ventilate → Fig.

6 -	Tightening clip

q

Replace

q	Tighten → Fig.

7 -	Supplement

8 -	Bolt with internal splined head

q	Tighten diagonally to 10 Nm

q	Afterwards tighten to 40 Nm

q	Replace after removing

9 -	Complete half-shaft right

q	Tubular axle

10 -	Articulated left half-shaft

q	Solid axle

11 -	Tightening clip

q

Replace

q	Tighten → Fig.

12 -	Dust guard for constant velocity joint

q	Ensure that there is no friction damage or wear

q	Ventilate → Fig.

13 -	Tightening clip

q

Replace

q	Tighten → Fig.

14 -	Plate spring

q	Note installation position → Fig.

15 -	Retaining ring

q	Note installation position → Fig.

16 -	Securing ring

q

Replace

q	Fit into the groove on the complete half-shaft

17 -	Constant velocity exterior joint

q	Always replace the assembly.

q	Remove → Fig.

q	Fitting: fit onto the complete half-shaft as far as possible by hitting with a plastic hammer

q	Lubricate articulations →

q	Verification → Chapter

18 -	Dodecagonal bolt

q	Replace after removing

q	Before screwing the nut on, clean the remains of paint and/or corrosion that may be on the screw thread of the exterior joint.

q	Tighten → Chapter

Removing the exterior constant velocity joint Special tools and workshop equipment required t  Lightweight mallet Procedure –  Release from the complete half-shaft using a strong blow with a lightweight mallet.

Inner constant velocity joint: detach Special tools and workshop equipment required t  Tensor -U-40061/1- t  Tightening punch -T20027-   Note t  Firstly take out the dustguard of the constant velocity joint using a punch. t  Press on the ball hub.

Installation position of the plate spring and thrust ring on the exterior joint 1 -  Plate spring    Ø the largest (concave side): joined to the retaining ring -2-. 2 -  Retaining ring    Ø the largest (concave side): joined to the retaining ring -1-.

Installation position of the plate spring on the joint 1 -  Plate spring    Ø largest (concave side) rests on the constant velocity joint

Inner constant velocity joint: insertion Special tools and workshop equipment required t  Set of tools -U-40450A- Procedure –  Insert the constant velocity joint up to the limit. –  Insert the securing ring with pliers-A-81124-.   Note The bevel of the interior diameter of the ball hub (cogged) should point to the support collar of the complete half shaft.

Ventilate dustguard   Note The dustguard often fits when placed over the constant-velocity joint. This causes a depression in the dustguard that creates a fold on the inside -arrow-. Procedure –  Once the dustguard is fitted in the smaller diameter, it must be aired briefly to ensure that the pressure is compensated.

Tense the clamp (Ø larger) Special tools and workshop equipment required t  Tensing pliers -T20072- t  Torque wrench -SAT 8010- Procedure –  Place the pliers for tensing -T20072- as shown in the figure Ensure that the edges of the tool fit into the corners -arrows B- of the clamp. –  Tense the clip by turning the spindle -A- using the torque wrench (taking special care not to incline the pliers during the operation). Tightening torque: 20 Nm.   Note t  Given the firmness of the dustguard (in comparision with the rubber) and of the fine steel clamp required, this may only be tightened using pliers -T20072-. t  If the screw thread is difficult, when it is dirty, for example, the force necessary to put the clamp under pressure using the prescribed torque cannot be achieved.

Tense the clamp (Ø smaller) Special tools and workshop equipment required t  Tensing pliers -T20072- t  Torque wrench -SAT 8010- Procedure –  Place the pliers for tensing -T20072- as shown in the figure Ensure that the edges of the tool fit into the corners -arrows B- of the clamp. –  Tense the clip by turning the spindle -A- using the torque wrench (taking special care not to incline the pliers during the operation). Tightening torque: 20 Nm.   Note t  Given the firmness of the dustguard (in comparision with the rubber) and of the fine steel clamp required, this may only be tightened using pliers -T20072-. t  If the screw thread is difficult, when it is dirty, for example, the force necessary to put the clamp under pressure using the prescribed torque cannot be achieved.