Drive Pinion
Drive Pinion
Special tools, testers and auxiliary items required
• Puller (VW391)
• Thrust plate (VW401)
• Thrust plate (VW402)
• Punch (VW407)
• Punch (VW408A)
• Thrust disc (VW412)
• Supporting channels (VW457)
• Removal device (VW460)
• Assembly ring (VW470/1)
• Sleeve (VW519)
• Holding fixture (VW540)
• Thrust pad (30-205)
• Inserter ring (2003/3)
• Thrust pad (3005)
• Retainer (3028)
• Thrust pad (3062)
• Drift (3138)
• Seal driver-Front wheel bearing (3143)
• Slide hammer-complete set (VW771)
• Mandrel (3026)
• Wheel bearing assembly set (3253)
• Engine/transmission jack (VAG1383A)
Removing nut for drive pinion
- Secure final drive on a repair stand. Refer to => [ Securing Rear Final Drive to Assembly Fixture ] Rear Final Drive 01R (01AA,01EA,02XA,0A3A,01V,01VA,09LA Transmission).
- Install two M8 x 30 nuts - A -.
B - Socket, long A/F 36
- When nut is loosened the final drive must be supported (e.g. with universal transmission mounting (1359/2)in conjunction with engine and transmission jack (VAG1383A)).
Pulling flange for drive shaft off drive pinion
- Install two M8 x 30 nuts - A - into the flange.
Pulling out seal for flange for driveshaft
Pressing drive pinion out of inner race for small taper roller bearing
Pulling out small taper roller bearing outer race
B -Support , e.g. Kukko 22/2
B - Internal puller 46 to 2.28 in, e.g. Kukko 21/7
Driving out outer race for large taper roller bearing
- After removing check shims for damage.
Pressing inner race for large taper roller bearing off drive pinion
A - Separating device 22 to 4.53 in, e.g. Kukko 17/2
Pressing inner race for large taper roller bearing onto drive pinion
- Heat inner race to approximately 100 °C, position and push to final position.
CAUTION!
Wear protective gloves!
Pulling in outer race for large taper roller bearing
- Lightly lubricate bearing seat in housing.
- Insert predetermined shim "S3" for drive pinion. Refer to => [ Adjustment Overview ] Adjustments.
The inscription "top" on pressure plate (3253/4) faces nut of insertion device
Pressing in small taper roller bearing outer race
- Lightly lubricate the bearing seat in the housing.
- The outer race must be attached with needle bearing drift (VW295) and thrust pad (30-205).
Pressing on small taper roller bearing inner race
- Insert new drive pinion with a new spacer sleeve.
CAUTION!
Wear protective gloves!
- Heat inner race for small taper roller bearing to approximately 100 °C and install onto drive pinion.
- Press up drive pinion and insert bearing with sleeve (40-21) onto stop.
Inserting O-ring
- Insert O-ring with gear oil.
Tapping in seal for flange for drive shaft
- Lightly oil outer circumference of seal.
- Drive in seal onto stop with mandrel (3026).
- Pack space between sealing and dust lips half-full with sealing grease (G 052 128 A1).
Installing flange
- Drive shaft flange onto drive pinion until securing nut can be mounted.
Tighten nut for drive pinion and adjusting friction torque
- Install two M8 x 30 nuts - A -.
B - Socket, long A/F 36
- When the nut is tightened the final drive must be supported (e.g. with universal transmission mounting (1359/2)in conjunction with engine and transmission jack (VAG1383A )).
• Only increase tightening torque slowly and read off frictional torque frequently. If the specified frictional torque is exceeded, the spacer sleeve must be replaced and the adjustment repeated. It is not possible to reuse a spacer sleeve that has been excessively compressed.
Measuring frictional torque
• Do not lubricate new taper roller bearings for frictional torque measurement. The bearings have already been treated with special oil by the manufacturer.
With torque gauge, 0 to 600 Ncm, standard commercially available
B - Socket, A/F 36
• Use 3/4" to 1/2" reducer as necessary.
The following frictional torques should be set:
* With at least 50 km service
Removing nut for drive pinion
- When the nut has been locked the radial run out on the drive shaft flange should be measured. Refer to => [ Driveshaft Flange Measuring Radial Run Out and Marking ] Service and Repair.