Vehicle & Technical > Discovery
Urgent Diagnosis help needed
gords:
--- Quote from: "Spooky" ---I have a confession Gordon - I've only just seen the PM you sent me ... :oops: I do apologise - me sitting here all dumb and stoopid whilst you're struggling on. Sorry, mate!
--- End quote ---
No worries, it came off quite easily once I'd broken the join (gentle use of trolley jack :wink: )
Neil (or anyone) - how does the crown wheel join to the diff centre - as I said, the cogs in the centre turn without the crown wheel turning, so what's going to make the wheels turn when the propshaft turns? :?
Spooky:
The crownwheel is bolted to the diff centre.
The test is to hold both half-shaft spline outputs, and try to rotate them against each other. If one turns freely, there's your problem. Just turning one will caused the small cogs to rotate.
muddyweb:
Gords..
The pinion and pinion gear are attached to the input flange... this is turned by the propshaft.
The crownwheel (the big one) is bolted to the diff carrier and is directly meshed with the pinion gear, so this will always turn.
There are then a few more gears...
The side gears (shown in brown) into which the halfshafts fit
The planet gears (shown in red) which sit on a cross pin
When both wheels have good traction, as the crownwheel turns, the whole diff cage turns as well (the planet gears are working against each other) and the shafts both turn.
When one wheel has less traction, or is turning at a different speed (when cornering) there is a difference in rotation of the planet gears and the power is distributed across the shafts.
Because the planet gears are always working against each other, they need to be secured, and they need to be able to turn freely.
Thrasher:
Gords,
My diff centre ... http://members.mud-club.com/profiles/thrasher/gallery/Diff
Spooky:
Neil, I take it that you still have the outer races for the bearings? :?:
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