dust oil seal for car and motorcycle

Fitting a new pinion oil seal
Use a degreaser or paraffin to clean the area around the differential nose, thoroughly wiping up the mixture of oil and dirt caused by the oil leak. Dry the area with absorbent rags.
Clean the inner rim of the flange where it touches the seal, and lubricate it with hypoid gear oil.dust oil seal for car and motorcycle.
Tap in the new seal, using a socket of the appropriate size and a soft-faced hammer. Be sure to fit it the right way round, with the lip facing inwards. A special tool of the right diameter is available for some cars, for pushing in the seal, but it is usually not necessary.
Grease the lips of the seal with a multi-purpose grease.
Oil the splines and refit the flange, holding it square to the pinion so as not to damage the seal. Give the nut the same number of turns that it took to remove it, and line up the marks you made earlier. If the nut is self-locking, fit a new nut.
Check with a torque wrench that the setting for the nut corresponds with that given in the workshop manual for the car, to provide the correct load on the pinion. Adjust the setting if necessary. Fit a new split pin on the nut, if required.dust oil seal for car and motorcycle.
Reconnect the prop-shaft flange to the pinion flange. Top up the differential housing with fresh hypoid gear oil to the correct level.
Replacing front-wheel-drive oil seals
If there is a leak from the oil seals at the inner ends of front-wheel drive shaft, the shafts must be removed and the seals renewed – a task best left to a garage.
Removing the pinion oil seal (rear-wheel drive)
Raise the rear of the car on axle stands, chocking the front wheels; also apply the handbrake.
Replacing transmission oil seals
Undo the nuts holding the propeller-shaft flange to the pinion flange.
Mark the position of the pinion flange and its securing nut relative to the pinion-shaft end, using a centre punch. This is important for accurate reassembling later.
Unscrew the nut, counting the turns needed so that you can refit it exactly as it was in order to keep the pinion and crown wheel meshing properly inside the differential.
Put a drip tray under the differential nose to catch the oil. There will not be very much, as the level of the oil in the differential will only fall to the level of the nose.
Tap the flange off its splined shaft, using a soft-faced hammer. If it is stubborn, use a pulling tool.
Take care when using a hammer on the flange. Any distortion will result in misalignment of the propeller shaft, leading to early failure of the new seal.
Prise out the old seal with a screwdriver, taking care not to damage the seating.dust oil seal for car and motorcycle.