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Old 09-19-2006, 08:44 PM   #75 (permalink)
DoctorDex
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Join Date: Jul 2005
Location: Edmonton, AB
Drives: '91 VR4 - RIP
Trader Rating: (17)
DoctorDex is an unknown quantity at this point
Default Re: Backlash in the Transaxle?

Quote:
Originally Posted by keithmac
That seems to be the internal gear backlash measurement, spec states 0.1 to 0.16mm as acceptable?. Have you trad though the sdjustment part of the manual?
What and where is the output shaft adjustment procedure in the manual?

The specs the dealer quoted me was 0 - 0.004 inches which works out to 0 - 0.1016 mm measured at the output shaft.

They said they measured, with a dial indicator, 0.0015 inches which works out to ~ 0.04 mm. These measurements don't add up because I personally measured ~ 2 mm of backlash, using a pair of calipers, caused by the VCU & Planetary dowel pins. Like Kormex said, I should throw the dealer measurements out the window and start from scratch.

I took my car out for a spin today to see if I could give a better description of the clunk so that I can try and figure out where its coming from. The clunk exists in 1st gear, but I would characterize it as very minimal to non-existent. Once I shift into 2nd, it starts to become more noticeable and it gets worse in 3rd, even worse in 4th and its brutal in 5th. I don't know if this information helps.

Edit: I just got back from another drive and yes it does do it just as bad in 1st. If I get on it hard enough in any gear it will do it, it just seems to do it easier in the higher gears. I find this a bit strange, because wouldn't there be more torque in the lower gears?

I'm hoping to get under the car this weekend and I'll report back with some better measurements.

Declan
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'91 VR4 - Rebuild in progress: Mods TBA.

Last edited by DoctorDex : 10-30-2007 at 08:37 PM.
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