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Vehicle & Technical => Discovery => Topic started by: The Winfrows on March 22, 2007, 17:50:21

Title: 300TDI Rear diff oil seal replacement any ideas
Post by: The Winfrows on March 22, 2007, 17:50:21

How hard is it to do. I have been told I have to strip out the shafts from the axle and split the diff housing . Then take out the crown wheel and pinion and split it. Then remove the nut then take out the shaft remove the seal and replace th seal. Then you have to have the hole thing balanced aparently. And put it together.  :? HELP

Title: 300TDI Rear diff oil seal replacement any ideas
Post by: beast5680 on March 22, 2007, 18:12:35

remove prop ,undo flange nut ,remove flange, lever out seal and replace, reassemble

Title: oil seal
Post by: The Winfrows on March 22, 2007, 18:22:03

What nut

Title: 300TDI Rear diff oil seal replacement any ideas
Post by: beast5680 on March 22, 2007, 18:41:59

there should be a nut in the middle of the flange on the pinion shaft which holds the flange on

Title: 300TDI Rear diff oil seal replacement any ideas
Post by: The Winfrows on March 22, 2007, 19:25:04

there is only a stb about 2.5 to 3 inch long then the flange that the prop fits to.

Title: 300TDI Rear diff oil seal replacement any ideas
Post by: Ralph on March 22, 2007, 19:33:02

Take prop off then look inside what you call a stub and you will see then nut in question! undo it pull your "stub" off and you will see the seal, prise it out tap new one in and reasemble

Title: 300TDI Rear diff oil seal replacement any ideas
Post by: ChrisW on March 22, 2007, 21:51:01

Bearing in mind the 300 rear diff does not have a 'conventional' prop coupling... if you look at the peg it will have something like an M8 thread in it - there is a special tool to remove this peg however we broke three of them trying to remove mine  :roll:
This has been covered before somewhere - try doing a search, you should get the results, think it involved using a piece of exhaust pipe and a long bolt.

THEN you will see the nut  :wink:

Title: 300TDI Rear diff oil seal replacement any ideas
Post by: ChrisW on March 22, 2007, 21:56:11

http://forums.mud-club.com/viewtopic.php?t=24051&highlight=rear+diff+seal

Title: 300TDI Rear diff oil seal replacement any ideas
Post by: Range Rover Blues on March 23, 2007, 03:01:41

I'm sure they are right, the hardest bit is getting that stub out of the middle of the flange (3 bolts right :?: ).
If you can get it out then you have to remove the big but (nyloc) from the centre of the flange, pull the flang eoff and prise out the old seal.

Fit the new seal and reassemble.

Fortunately because the diff is built with shims you only have to re-tighten the centre nut to torque.  On an English axle there is a crush-can rather than shims and you have to measure the running torque.  It's not a simple job on those, but a LR diff is pretty straightforeward, if you can get that stub out.

p.s. Try heating the flange gently too.

Title: oil seal
Post by: The Winfrows on March 23, 2007, 19:24:11

Thanks for the help chaps me thinks i will have a go at it this weekend. Many thanks once again Andy.