Re: Bits of brass in a 32 900 differential
Posted by 32model901 On 2011/4/14 18:19:14
Tom,
Most likely these came from the brass cages used to separate the rollers in the tapered roller bearings on each side of the ring / crown wheel carrier, or from the brass cages of the two ball roller bearings that support the front and rear of the pinion gear.
Some of the tapered roller bearings used steel cages, so my hunch would be they came from the ball bearings that support the pinion.
If the 900 differential is like the 901 it is easy to pull the carrier out that supports the pinion and check the front and rear pinion bearing. The front pinion bearing is a double row ball and about twice the size of the rear pinion bearing because it carries radial and axial load.
The rear pinion bearing is a single row ball bearing.
There may be some brass shims behind the pinion carrier.
Make sure to save these, they set the depth of the pinion relative to the ring or crown gear and make sure that you have the proper mesh / contact between the two gears.
I'd look into this before driving the car any more. Even though brass is soft if a piece gets caught in the gear mesh it could break a tooth on the ring or pinion gear.
Good luck,
Dave
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Most likely these came from the brass cages used to separate the rollers in the tapered roller bearings on each side of the ring / crown wheel carrier, or from the brass cages of the two ball roller bearings that support the front and rear of the pinion gear.
Some of the tapered roller bearings used steel cages, so my hunch would be they came from the ball bearings that support the pinion.
If the 900 differential is like the 901 it is easy to pull the carrier out that supports the pinion and check the front and rear pinion bearing. The front pinion bearing is a double row ball and about twice the size of the rear pinion bearing because it carries radial and axial load.
The rear pinion bearing is a single row ball bearing.
There may be some brass shims behind the pinion carrier.
Make sure to save these, they set the depth of the pinion relative to the ring or crown gear and make sure that you have the proper mesh / contact between the two gears.
I'd look into this before driving the car any more. Even though brass is soft if a piece gets caught in the gear mesh it could break a tooth on the ring or pinion gear.
Good luck,
Dave
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