Since the wheel bearing and its retaining collar are a press-fit onto the axle Replacing the wheel bearing and outer seal is the more difficult part (see below), bleed the brakes, and you are finished. If all you needed to replace was the oil seal, you can now reassemble everything Next, clean up the axle flange surface and replace the O-ring, Seal is seated, coat the lips of the seal with grease. I found the front hub 2 1/8" socket with a towel on the end was the perfect size to drive the new seal. Place the new seal into the axle end, and carefully drive it in. The new seal should be prepared with a coat of grease on its outer surface The front hub socket, padded with a towel, is perfect for driving in an inner axle seal. Also, cleanĪny old gasket material from the axle flange, assuring none gets in to the axle tube. Once you have the old seal out, check the seal surface and clean, if necessary. Using your favorite seal puller or a large screwdriver, just pop the old one out. With the brake/axle assembly out of the way, the inner oil seal can be pulled from the housingĮnd. Once the nuts are off, grasp the backing plate and pull the entire brake andĪxle shaft assembly from the axle housing. Next, the axle shaft is removed from the housing by loosening the four 14mm hex-head The old seal was removed and the seal surface cleaned.
Vinyl vacuum caps, which can be found at most auto parts stores, make great temporary brake line plugs. While disconnected, so you may want to find a way to plug them to keep from emptying the brake master cylinder.
The line fitting nut is soft and subject to rounding off, so be cautious. Then, the hydraulic brake line can be removed from the backing plate. 1990 and later 4runners will need to remove the brake drum, unhook theīrake cable from the lever inside, unbolt the cable sleeve from the backing plate, and slide the cable out. The tire is off the vehicle, remove the retaining pin from the emergency brake lever mechanism at the backing Place a drain pan under the end of the tube to catch any gear oil which may drip.
To replace a rear axle seal or bearing, the rear axle should be placed securely on jackstands,Īnd the tire removed. The e-brake cable is off, and the hydraulic line is "gravity bleeding". The brake assembly and axle/backing plate prior to removal. So, if you have a leaking seal, be sure to check the breatherĪxle Shaft Removal and Inner Seal Replacement Somewhere in the system: usually at the axle seal. When the stock breather is unable to vent the diff, the internal pressure will find relief Less common causes can be a bent axle housing or shaft. Wheel, and it may get into the brake drum and reduce rear brake feel.Ĭommon causes of axle seal failure are plugged differential breathers or worn wheel bearings. When a rear axle seal goes bad, it's typically noticeable by gear oil leaking all over a rear The axleshaft and backing plate: I had some cleaning up to do. Welcome to 4x4Wire! You, your 4x4, and Access.Īuthor: Erik Bibelheimer and Joe Micciche - Novenber, 2003 Toyota Maintenance: Replacing Rear Wheel Bearings and Seals
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