Why is my front diff pinion seal leaking?
Perhaps the seal hardened with age and worn a groove on the yoke. Or the pinion developed significant runout or radial play due to bearing race wear causing looseness and caused the leakage. The seal can be replaced easily but if you have bearing wear causing too much pinion play, bearings have to be replaced too.
What’s the correct way to replace a front pinion seal?
The “correct” way is to drop the third, pull the carrier, push out the pinion, inspect the bearings, install a new crush sleeve and set the preload. This is a significant job, so IMHO, the short cut is worth the risk. If the bearings start talking, will have to do the full job.
Where is the pinion sleeve on a front axle?
The pinion seal will be in the housing, the pinion sleeve will be on the pinion flange. Both of these need to be replaced to properly fix this leak. Before you start changing the seals, be sure to clean any grease and dirt off the area around the seals. You do not want any debris getting into the new seal and damaging it.
When to replace the front pinion seal on a 96 fzj-80?
The front pinion seal on my 96 FZJ-80 has been seeping for awhile so replaced it today. I marked the pinion nut, pinion shaft, flange, and 3rd member before starting the job, and I noted that there was barely one thread of the pinion shaft showing past the pinion nut.
How much does it cost to repair rear differential seal?
On average, differential repair can range anywhere from $500 to as much as $2,000. The costs will depend on the mechanic, the location (rear and/or front), the significance of the repair, parts being used if the entire differential has to be replaced, where you live and your car’s make and model.
Why is my rear pinion seal leaking?
Rear main seal leak causes Worn main bearings. If your vehicle has worn main bearings, the crankshaft is able to move excessively inside the bearings which will stretch and move the rear main seal while Clogged or blocked PCV system. Most rear main seals have a lip that rides on the shaft. Engine oil condition. Crankshaft condition. Misalignment issues. Seal coating.
How do you replace front pinion seal?
Slide the pinion yoke off the pinion shaft and set it aside. Using a small flat screwdriver, bend the outer metal ring of the seal to help loosen it then pry it out of the bore. Pack the cavity behind the seal with lithium grease then install the new seal into the bore.
What is the importance of a rear pinion seal on a car?
Located near the pinion shaft in the differential of vehicles, the pinion seal is an integral component of the car that prevents fluid leakage out of the differential. It also prevents water, debris, or dirt from getting into the differential.