3 - Lower Transfer Gear Housing - Damage, Possible Causes And Repair Measures
Information
- A (misleading) coating of oil on the bottom of the transfer gear (front and/or rear) can be caused by a minimal leak on one of the drive train components (engine, main transmission, steering gear or front-axle final drive).
- This is an oil leak caused by heat and air flow while driving.
- The component(s) responsible for this must be checked while warm by performing a leak test. The leak must then be corrected if necessary and the transfer gear must be cleaned carefully.
Work Procedure:
In the event of leaks on the lower transfer gear housing, check possible cause(s) and carry out the suggested repair measure(s).
Leak area (3):
Leak area 3
Front transfer gear in lower housing area (> Front transfer gear - lower housing area): Coating of oil (-Arrows- )
Front transfer gear - lower housing area
Cause (3A):
Sealing ring on output shaft for front transfer gear leaking > Sealing ring leaking
Sealing ring leaking
Repair measure (3A):
Replace sealing ring on output shaft for front transfer gear, see > 399255 REPLACING SEALING RING FOR TRANSFER GEAR (FRONT OUTPUT SHAFT)
Parts required (3A):
| Part No. | Designation - Use |
Qty. |
|---|---|---|
| 958 341 199 10 | > Sealing ring (35 x 62 x b) - Output shaft for front transfer gear | 1 ea. |
| 958 349 490 10 | > Circlip - Front cardan shaft to front-axle final drive | 1 ea. |
| 958 349 491 10 | > Circlip - Front cardan shaft to transfer gear | 1 ea. |
| 955 301 115 01 | > Screw plug - Oil inspection plug/oil drain plug on transfer gear | 2 ea. |
Required materials
(3A):
Additional materials required for vehicles with hang-on transfer gear:
Sample Porsche part number.
| Part No. | Designation | Qty. |
|---|---|---|
| 000 043 305 63 | > Transfer gear oil | 0.85-liter container (smaller quantity as required) |
Additional materials required for vehicles with Torsen transfer gear:
Sample Porsche part number.
| Part No. | Designation | Qty. |
|---|---|---|
| 958 341 536 00 | > Transfer gear oil | 1-liter container (smaller quantity as required) |
Information
Only the quantities that are actually added must be invoiced when using original Porsche fluids. Invoicing of 1-liter container is not permitted.
Labour operations
(3A):
| LO | Designation |
|---|---|
| 39925551 | Replacing sealing ring for transfer gear |
| 39021920 | Removing and installing front cardan shaft |
| 39905556 | Changing oil for final drive |
PQIS coding:
For invoicing and documentation using PQIS, enter the following coding:
| Location key (FES5) | 39650 | Transfer gear |
| Damage code (SA4) | 5400 | Oil leak |
Cause (3B):
Rear left transfer gear housing leaking (sealant defective)
> Rear left transfer gear housing leaking
Rear left transfer gear housing leaking
Repair measure (3B):
Replace transfer gear, see > 396519 REMOVING AND INSTALLING TRANSFER GEAR
Parts required (3B):
| Part No. | Designation - Use | Qty. | ||||
|---|---|---|---|---|---|---|
| 95b 341 010 XX (1) | Hang-on transfer gear | 1 ea. | ||||
| or | ||||||
| 95b 341 020 XX (1) | Torsen transfer gear | 1 ea. | ||||
| WHT 003 211 | > 12 point socket - Transfer gear screws | 10 ea. | ||||
| N 909 913 02 | > Hex flange bolt (combination) - Cross member to outer body | 4 ea. | ||||
| N 105 167 02 | > Hex flange bolt, self-locking - Cross member to inner body | 2 ea. | ||||
| N 900 639 05 | > Hex flange bolt - Damper to transfer gear | 4 ea. | ||||
| 958 349 493 00 | > Circlip - Rear cardan shaft to transfer gear | 1 ea. | ||||
| 958 349 490 10 | > Circlip - Front cardan shaft to front-axle final drive | 1 ea. | ||||
| 958 349 491 10 | > Circlip - Front cardan shaft to transfer gear | 1 ea. | ||||
| 955 301 115 01 | > Screw plug - Oil inspection plug on transfer gear | 1 ea. | ||||
| 95b 111 220 XX (1) | => Clamping sleeve - Exhaust system |
X ea.(2) | ||||
|
||||||
Required materials
(3B):
| Part No. | Designation | Qty. |
|---|---|---|
| 000 043 305 73 | > Extreme pressure grease | 100gtube (approx. 5-10 gains required per vehicle) |
Additional materials required for vehicles with hang-on transfer gear:
Sample Porsche part number.
| Part No. | Designation | Qty. |
|---|---|---|
| 000 043 305 63 | > Transfer gear oil | 0.b5-liter container (smaller quantity as required) |
Additional materials required for vehicles with Torsen transfer gear:
Sample Porsche part number.
| Part No. | Designation | Qty. |
|---|---|---|
| 958 341 536 00 | > Transfer gear oil | 1-liter container (smaller quantity as required) |
Information
On the quantities that are actually added must be invoiced when using original Porsche fluids. Invoicing of 1-liter container is not permitted.
Labor operations (3B):
| LO | Designation | ||
|---|---|---|---|
| 39903550 | Checking and topping off oil for final drive | ||
| 396519XX (1) | Removing and installing transfer gear | ||
|
|||
PQIS coding:
For invoicing and documentation using PQIS, enter the following coding:
| Location key (FES5) | 39650 | Transfer gear |
| Damage code (SA4) | 5400 | Oil leak |
Cause (3C):
Outer right transfer gear housing leaking (sealant defective)
> Outer right transfer gear housing leaking
Outer right transfer gear housing leaking
Repair measure (3C):
Replace transfer gear, see > 396519 REMOVING AND INSTALLING TRANSFER GEAR
Parts required (3C):
| Part No. | Designation - Use | Qty. | ||||
|---|---|---|---|---|---|---|
| 95b 341 010 XX 1) | Hang-on transfer gear | 1 ea. | ||||
| or | ||||||
| 95b 341 020 XX 1) | Torsen transfer gear | 1 ea. | ||||
| WHT 003 211 | > 12 point socket - Transfer gear screws | 10 ea. | ||||
| N 909 913 02 | > Hex flange bolt (combination) - Cross member to outer body | 4 ea. | ||||
| N 105 167 02 | > Hex flange bolt, self-locking - Cross member to inner body | 2 ea. | ||||
| N 900 639 05 | > Hex flange bolt - Damper to transfer gear | 4 ea. | ||||
| 958 349 493 00 | > Circlip - Rear cardan shaft to transfer gear | 1 ea. | ||||
| 958 349 490 10 | > Circlip - Front cardan shaft to front-axle final drive | 1 ea. | ||||
| 958 349 491 10 | > Circlip - Front cardan shaft to transfer gear | 1 ea. | ||||
| 955 301 115 01 | > Screw plug - Oil inspection plug on transfer gear | 1 ea. | ||||
| 95b 111 220 XX (1) | => Clamping sleeve - Exhaust system |
X ea. (2) | ||||
|
||||||
Required materials
(3C):
| Part No. | Designation | Qty. |
|---|---|---|
| 000 043 305 73 | > Extreme pressure grease | 100gtube (approx. 5-10 grams required per vehicle) |
Additional materials required for vehicles with hang-on transfer gear:
Sample Porsche part number.
| Part No. | Designation | Qty. |
|---|---|---|
| 000 043 305 63 | > Transfer gear oil | 0.b5-liter container (smaller quantity as required) |
Additional materials required for vehicles with Torsen transfer gear:
Sample Porsche part number.
| Part No. | Designation | Qty. |
|---|---|---|
| 958 341 536 00 | > Transfer gear oil | 1-liter container (smaller quantity as required) |
Information
Only the quantities that are actually added must be invoiced when using original Porsche fluids. Invoicing of 1-liter container is not permitted.
Labor operations (3C):
| LO | Designation | ||
|---|---|---|---|
| 39903550 | Checking and topping off oil for final drive | ||
| 396519XX (1) | Removing and installing transfer gear | ||
|
|||
PQIS coding:
For invoicing and documentation using PQIS, enter the following coding:
| Location key (FES5) | 39650 | Transfer gear |
| Damage code (SA4) | 5400 | Oil leak |
Cause (3D):
Oil leak/oil coating on bottom of front transfer gear housing (area where it joins main transmission)
> Front transfer gear housing, bottom
Front transfer gear housing, bottom
Repair measure (3D):
Leaks from the area where tie transfer gear joins the main transmission can spread as far as the (lower) transfer gear output shaft area, see "Front transfer gear housing (bottom) - Damage, possible causes and repair measures".
References:
> 387055 REPLACING SEALING RING FOR REAR OUTPUT SHAFT
> 399255 REPLACING SEALING RING FOR TRANSFER GEAR (REAR OUTPUT SHAFT)
> 399255 REMOVING AND INSTALLING SEALING RING FOR TRANSFER GEAR (INNER DRIVE)
> 399255 REPLACING SEALING RING FOR TRANSFER GEAR (FRONT OUTPUT SHAFT)