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#1
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Rear diff side bearing preload?
How do you guys adjust the rear diff carrier side bearing preload? I know the shims are swapped, but how much preload?
The manual gives a formula which uses a lot of different figures stamped in the OEM parts, but I'm installing a Quaife carrier with no exact measures. The shims which were in the OEM assembly give practically a zero preload.I checked with out the crown wheel and no shaft seals. -Zero turning resistance. The more recent R160s have the same adjustment as the front bearings in the 4EAT - turning the bearing retainers. The manual calls for half a tooth preload - with 18 teeth this is 1/36th of a turn.... 1mm thread pitch results in approximately 0.03mm preload. Any comments? Thanks, Tapani |
#2
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Re: Rear diff side bearing preload?
If I were you I'd call Quaife and ask.
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'94 Laguna Blue LSi ~159k.......JDM ultra short-geared 3.900 STi Version 7 6-speed w/ Cobb shortshifter, ECUtune 244,8.1mm/256,9.1mm i/e cams, group N motor mounts, '97 grille, JDM clear corners, Momo JDM Legacy GT steering wheel, apkarian's LED tails, silver STi BBS wheels, PWR radiator, redstuff pads f/r, drilled/slotted rotors, bontragerworks rsb #18, Koni/GC 450f/375r coilovers, Megan Racing adjustable lateral links, KMac c/c plates, Stebro exhaust, ECUtune 1v5, Optima battery in the trunk where it belongs. Turbo project '97 Ebony LSi ~137k #036.......Power mode mod, JDM clear corners, BBS wheels. AUX/pocket mod Now a mod "over there" ............Photo album |
#3
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Re: Rear diff side bearing preload?
Well, their instruction is to go with the OEM recommendation
Same thing with the Detroit Truetracs I had in my Range Rover. Adjustment as per manual. There's something weird in the manual also.... the pinion (only) rotation resistance is given as newtons (force) using a spring scale and pulling from the drive shaft bolt hole.. the additional resistance (increase) from the crown wheel tooth contact + side bearing preload is given as a torque. Must be a error in the latter figure. Tapani |
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