dhutch
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| posted on 31/8/09 at 11:33 AM |
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English Axle Diff Whine
Recently the westfeilds diff has started to whine under power.
Ford english diff on unknown origin, age, or ratio. Which also leaks all over the place.
I shot a video of the noise with the rear jacked up. First is longer but proberbly doesnt show anthing the second one doesnt.
http://www.spurstow.com/spurstow/ebayphotos/DSCN8124.AVI
http://www.spurstow.com/spurstow/ebayphotos/DSCN8125.AVI
Ive read up about these, with the crushable tube being mentioned a few times, but im not 100% as to if this would cause the above symtoms, or where it
is within the diff.
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dhutch
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| posted on 31/8/09 at 11:39 AM |
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Am i right in saying that having removed the diff out of the front of the axle, when rebuilting you first replace the oil seal in the nose (input) and
the two bearings that support the pinion and inputshaft. Which is then adjust right to get the correct preload/endfloat in the bearings. With the
crush tube.
Then having got that right, you then bolt the diff back onto the front casing. And set the gear mesh right. With shims?
The the diff goes back into the axle (which in the mean time has had the wheel bearing and intergrale seals changed) slide the half shafts in, and
bobs you uncal.
However, with suffent grief, you can damage (crush) the crush tube, upsetting the pinion bearings preload, which causes the mesh to cockup, making it
whine?
The engine is a 1.9 cvh with maybe 130bhp estimated.
Diff is coming out shortly anyway, as im rebushing the rear with replacment rubber bushes becuase the old ones are shot.
Daniel
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Ben_Copeland
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| posted on 31/8/09 at 01:16 PM |
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I take it the oil level is correct?
Mine started to whine, checked the oil and it was low. Topped up and its fine....
Ben
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procomp
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| posted on 31/8/09 at 03:41 PM |
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Hi
If your going to recon the diff you may as well replace the crush tube with a solid item. This stops the crush tube from further crush due to to extra
load and leaking in the near future again. It's no extra cost so it's a no brainier.
Cheers Matt
Edit to say yes it's the crush tube that's continued to crush with usage that has lead to the leak past the front seal and causing the
whine due to the loss of preload.
[Edited on 31/8/09 by procomp]
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dhutch
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| posted on 31/8/09 at 07:27 PM |
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It did run slightly low on oil prior to the whine coming on, taking around 400ml to bring it back upto the leval plug. Ive topped it up again now and
it still whines.
Glad to know im barking up the right tree anyway. Presumably its adviable not to drive it like it is too much?
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britishtrident
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| posted on 31/8/09 at 07:44 PM |
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EP140 oil with a dash of Moly slip might quiten it down for a while --- at the expense of increased oil drag
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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dhutch
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| posted on 31/8/09 at 08:28 PM |
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quote:
Originally posted by britishtrident
EP140 oil with a dash of Moly slip might quiten it down for a while --- at the expense of increased oil drag
Yeah?
- Im not worried by the noise at all, more the gear wear that i imagine it represents.
Ive beeing using bog std EP90 at £4 a litre.
Daniel
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dhutch
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| posted on 1/9/09 at 11:29 PM |
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Presumably in order the do th rebuild i would need.
- New bearings and seal for the pinion gear.
- A new crush tube, and possably ablity to fab a solid replacment.
- New wheel bearing and seal units for the ends of the half shafts.
- A half decent torque wrench to torque up the crush tube jobbie.
- A hydrolic press to press in the new beaings and rear bushes (which i'll be replacing at the time)
- Possably a hack saw and or blow torch to get the old bearings out?
Press, torque wrench and lathe i have access to.
Also presuably wise to inspect the crown and pinion gears for wear.
I know its been asked before, but is there a guide for this. Which haynes has the best coverage of rebuilding the english diff?
Daniel
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dhutch
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| posted on 2/9/09 at 02:22 PM |
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Videos now at
http://www.spurstow.com/temp/DSCN8124.AVI
http://www.spurstow.com/temp/DSCN8125.AVI
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dhutch
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| posted on 2/9/09 at 11:05 PM |
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How much damage would driving with the diff in the above do?
- Its not obtrusivly loud, but im keen not to damage it more than i have to before the rebuild clearly, assuming its currently ok otherwise.
Got a 2h out and back to a boat show for the weekend that it would be nice to do in the car, mainly so its there for the weeknd, aslo becuase it looks
like it will be sunny and nice!
Also stafford a fortnight later, which im unlikely to get it done for. Then im back at uni with access to stuff.
Daniel
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dhutch
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| posted on 4/9/09 at 12:10 AM |
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Boo!! echo, echo, echo...
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arrow-engineering
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| posted on 21/9/09 at 09:11 PM |
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diff
setting up a diff is a specialist job, you have to ensure the pinion is set at the correct height, this involves selecting the correct shims when
assembling the pinion, then you have to ensure the crown wheel is meshing correctly with the pinion, you have to adjust the mesh whilst also keeping
the correct preload on the side bearings, you ideally need special equipment and lots of experience.
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dhutch
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| posted on 21/9/09 at 11:33 PM |
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quote:
Originally posted by arrow-engineering
setting up a diff is a specialist job, you have to ensure the pinion is set at the correct height, this involves selecting the correct shims when
assembling the pinion, then you have to ensure the crown wheel is meshing correctly with the pinion, you have to adjust the mesh whilst also keeping
the correct preload on the side bearings, you ideally need special equipment and lots of experience.
Are you offering?
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