Pinion pre-load

[raycemon]

I'm resetting the pre-load on the differential pinion shaft. the spec is for 4 to 8 in-lbs. I would assume that this is the torque while you are turning the pinion at a steady rate and not the static or breaking loose torque which is higher. Am I correct?

Thanks Bill

[GTJIM]

From the FSM: "Readings are taken while pinion is turning"

(Turning) Torque readings should be 5 to 11 lb-in (8 lb-in desired) for new bearings. 3 to 5 lbs-in (4 lb-in desired) for re-used bearings.

From my experience: If you go too far and the turning torque exceeds these measurements then another 'crush' sleeve must be fitted before trying again as the collapsible spacer gets over-compressed ... and will not spring back!
For heavy duty use a solid spacer, carefully ground to the exact length of a correctly compressed collapsible spacer is a far better option as the spacer can collapse further under severe use and cause loss of pinion bearing pre-load ... and failure of the gears.

[RallyBob]

Don't forget too the bearings must be oiled when you are checking these numbers, dry bearings will double or triple the force required to turn them!

I use 'old' previously crushed pinion crush sleeves for mockups. I just tap the bulge in the side of the crush sleeve with a hammer to restore some of the crushability, then use it for mock-up work.

[raycemon]

thanks for your help. Bill