Sealing Rings Connecting Socket, Replacing

Sealing rings, connecting socket, replacing
Special tools: 999 2615, 999 5575, 999 5576, 999 5777, 999 5778, 9995779, 999 5780

Preparatory work
Remove





- the bevel gear
- the snap-ring in the connecting socket.

Installing tool





Install expander 999 5777-1 and link rod 999 5777-2 (included in extractor 9995777) on the puller cylinder.
Puller cylinder 999 5575 is used together with hydraulic pump 999 5576 (foot operated).
Alternatively tool 999 2615 can be used, which consists of a puller cylinder and a compressed air driven hydraulic pump.

Removing the connecting socket





Place a container underneath the transmission.
Ensure that the piston rod in the puller cylinder is in the outer position.
Position socket 999 5777 between the puller cylinder and the transmission. Press in the expander so that it enters the channel on the connecting socket.
Apply the puller cylinder. Check that the socket between the transmission and the puller cylinder is in contact with its support surfaces.
Remove the socket.

Removing the sealing ring from the transmission





Use a screwdriver to pry out the seal.
Position drift 999 5779 on the end of the differential to protect the mating surface from damage when removing the seal. Do not damage the surfaces in the transmission housing.

Removing the sealing ring from the connecting socket
Use a screwdriver to tap the sealing ring out of the socket.





Check the mating surface for the connecting socket. The socket must be replaced if there are signs of grooves or corrosion.

Installing the connecting socket





Heat the socket to 150°-175°C in an oven. Place the socket in drift 999 5778. Install the drift in the transmission and tap the socket until it engages in the differential.
The above operation must be carried out quickly to prevent the heat spreading to the differential and causing the differential to expand.
Control measurement: the distance from the end of the connecting socket to the flat surface outside the sealing ring seat on the transmission housing must be approximately 41 mm.

Note: Use protective gloves when handling the heated socket.
Care must be also taken to prevent burns in the remaining operations.

Installing the sealing ring for the connecting socket





Lubricate the sealing ring lip and the mating surface on the socket. Use ATF fluid.
Insert the sealing ring onto the socket. Tap the socket into place using drift 999 5780. Tap in the drift until it is in contact with the transmission housing.

Installing the sealing ring for the differential





Position locating pin 9995779-1 in the end of the differential. Lubricate the sealing ring lip and the locating pin using ATF oil. Tap in the seal using drift 999 5779. Tap the drift in until it is contact with the end of the connecting socket.
Install the snap-ring for the connecting socket.

Finishing
Install the bevel gear.
Check the transmission oil level.