sandhurst
Rover Rookie
I am in Victoria Australia, and chasing a full rear axle and diff for a P5b , any available?
Posts: 9
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Post by sandhurst on Feb 28, 2022 7:23:43 GMT
Anybody who has replaced these, is the internal part of the seals a fit tight to the axle? Or are they a sloppy fit? The wheel bearings are a tight fit to the axle but the oil seals and felt seals seem very loose?
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Post by Phil Nottingham on Feb 28, 2022 8:48:58 GMT
The felt seals are loose and just to catch oil mist that passes through the rubber main seal.
The rubber main seal must be a tight fit in the seal carrier which is an easy fit in the hub. The oil seal itself must be a close sliding fit on the half shaft.
The bearing itself is a tight press fit in the hub and on the half shaft. As it is held tight by a one use collar presses in excess of 10T are needed or the special tool.
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percy
Rover Rookie
Posts: 72
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Post by percy on Feb 28, 2022 10:54:32 GMT
Would there be any harm in putting the the halfshaft in a chest freezer for half a day and the collar in the oven for an hour or so to make the fitting easier? This providing the user had the necessary press/tool at hand to drive the collar home.
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Post by Phil Nottingham on Feb 28, 2022 16:04:00 GMT
It helps sometimes but they can be very stubborn. Removal of the collar with brutal methods will damage the halfshaft as will replacing it along with the bearings. The VERY tight collar is the only thing ensuring that the axle with wheel and brake lines does not detach when on the move!
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Post by enigmas on Feb 28, 2022 22:08:15 GMT
I don't understand why when the bearing securing collar is fitted that it's not heated like traditional ring gears are and then fitted and allowed to cool. A MAPP gas torch or an oxy/acetylene set would work.
A test of the expansion factor under heated conditions could be done on a bench and assessed with a set of calipers.
Consider that most traditional pushrod OHV American V8 engines including the GM designed Rover V8s use this method for piston pin conrod fitting.
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