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boxerbloke Lifetime member
Joined: 18 Jun 2011 Posts: 2241 Location: Bracknell
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Posted: Tue Sep 08, 2020 13:31 Post subject: Clonk from diff |
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I have located the clonk sound and its coming from the rear diff, when i cycle through the gears, foot on brake engine running, and put it into Drive there is a loud clonk. the van seem to run okay but obviously something is not right. any ideas as to what this is and how to fix it ? _________________ Always remember when you read my replies I know less than Bazza. |
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Posted: Tue Sep 08, 2020 13:31 Post subject: Google Ads keep this community free to join! |
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andyman
Joined: 08 Dec 2012 Posts: 5601 Location: Penrith
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Posted: Tue Sep 08, 2020 13:55 Post subject: |
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Have you checked your UJ's? Get underneath with a torch, grasp the prop shaft firmly, and twist it while looking at the spider(s). You'll see and feel any movement in the two halves. There shouldn't be any. There is usually a bit of back-lash inside the diff, but it shouldn't be excessive. I have a little play in my front propshaft UJ's, but as they don't get much use, I've just re-greased them for now. Rear UJ's also greased, but they were nice and tight as I have replaced them previously. _________________ Andy C L300 Super Exceed - over 100 smiles per gallon! |
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boxerbloke Lifetime member
Joined: 18 Jun 2011 Posts: 2241 Location: Bracknell
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Posted: Tue Sep 08, 2020 18:04 Post subject: |
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Cheers Andy, will do. are they easy to change ? _________________ Always remember when you read my replies I know less than Bazza. |
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Deker
Joined: 08 Mar 2008 Posts: 3833 Location: Borehamwood
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Posted: Tue Sep 08, 2020 19:34 Post subject: |
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boxerbloke wrote: |
Cheers Andy, will do. are they easy to change ? |
Yep - Providing they have Circlips AND NOT Staked.
Mr D |
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boxerbloke Lifetime member
Joined: 18 Jun 2011 Posts: 2241 Location: Bracknell
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Posted: Tue Sep 08, 2020 21:02 Post subject: |
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Deker ...what ?? _________________ Always remember when you read my replies I know less than Bazza. |
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andyman
Joined: 08 Dec 2012 Posts: 5601 Location: Penrith
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Posted: Tue Sep 08, 2020 23:22 Post subject: |
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I did my own - first time I've done this job. I have good circlip pliers and lots of tools, clamps, vices etc, but I wouldn't call it an easy job. Probably easier to take off the prop-shaft and take it to someone for whom the job is routine - they'd probably do both ends in an hour. It took me 3+! _________________ Andy C L300 Super Exceed - over 100 smiles per gallon! |
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boxerbloke Lifetime member
Joined: 18 Jun 2011 Posts: 2241 Location: Bracknell
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Posted: Wed Sep 09, 2020 13:30 Post subject: |
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Thanks Andy , sounds like a garage job 😊 _________________ Always remember when you read my replies I know less than Bazza. |
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YOZA
Joined: 07 Mar 2005 Posts: 2423 Location: The centre of the universe
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Posted: Thu Sep 10, 2020 8:44 Post subject: |
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If you have a large vice, changing the UJ assembly is quite straight forward.
You will need a vice and two sockets a 24mm and a 13mm, you put the sockets one on either end of the prop knuckle and press the assembly about 3mm out, this will reveal the retaining clip which you pull out with a pair of mole grips (you can not get it out with circling pliers).
Once the clip is free, continue pressing until thre needle bearing cap is free, then repeat the process for the rest.
When reassembling the new joint just press together with vice guards and the vice, the needle bearings will stay in place as they are pre- packed with grease.
When you are swinging the prop shaft around it is easy to whack the splined gearbox end, so I wrapped it with tape for protection.
I have lots of pictures but I am unable to resize them, so it is pointless posting them up. _________________ Artificial intelligence is no match for natural stupidity.... |
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boxerbloke Lifetime member
Joined: 18 Jun 2011 Posts: 2241 Location: Bracknell
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Posted: Thu Sep 10, 2020 8:55 Post subject: |
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Thanks Yoza _________________ Always remember when you read my replies I know less than Bazza. |
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YOZA
Joined: 07 Mar 2005 Posts: 2423 Location: The centre of the universe
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Posted: Thu Sep 10, 2020 12:19 Post subject: |
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Circling pliers.....
I did mean circlip pliers, but my predictive text wasn’t having any of it. _________________ Artificial intelligence is no match for natural stupidity.... |
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YOZA
Joined: 07 Mar 2005 Posts: 2423 Location: The centre of the universe
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boxerbloke Lifetime member
Joined: 18 Jun 2011 Posts: 2241 Location: Bracknell
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Posted: Fri Sep 11, 2020 19:08 Post subject: |
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Look totally done _________________ Always remember when you read my replies I know less than Bazza. |
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YOZA
Joined: 07 Mar 2005 Posts: 2423 Location: The centre of the universe
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Posted: Sat Sep 12, 2020 16:24 Post subject: |
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Yes it was quite mullered.
It didn’t clonk though, it clicked. _________________ Artificial intelligence is no match for natural stupidity.... |
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boxerbloke Lifetime member
Joined: 18 Jun 2011 Posts: 2241 Location: Bracknell
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Posted: Sun Sep 13, 2020 11:16 Post subject: |
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Well i've changed the oil in the rear diff and now the sound has softened considerably, the old oil was pretty rank, it was a definite harsh metal clonk when i put it into drive, so i am thinking low oil and UJ's ? _________________ Always remember when you read my replies I know less than Bazza. |
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boxerbloke Lifetime member
Joined: 18 Jun 2011 Posts: 2241 Location: Bracknell
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Posted: Sun Sep 13, 2020 11:18 Post subject: |
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Oh and the good news is that cycling through all the gears seems to have sorted the 4WD problem, i can now drive it in two wheel drive without wind up slowly making my way through all the neglect _________________ Always remember when you read my replies I know less than Bazza. |
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