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Re: OT '90 Bronco tranney trouble
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Posted by Vern-MI on August 02, 2005 at 13:57:32 from (4.229.24.111):
In Reply to: Re: OT '90 Bronco tranney trouble posted by xragman on August 02, 2005 at 12:34:28:
The AOD was never offered in the Explorer. It was offered in the Mercury Mountaineer when the small 5.0 liter V8 was purchased. The only element in the A4LD which is peculiar to the O/D gear range and no other is the overdrive band. The only time it is used is in the O/D selected range. The High & reverse clutch and the forward clutch are also used in the O/D gear range but they are also used in the other gear selections and Ray has said that the other gear ranges work fine. So the likely culprit is the O/D band either being worn out of out of adjustment. The O/D one way clutch and the one way clutch are not used in the O/D gear range. The adjustment for the OVERDRIVE BAND is to loosen the lock nut and with it loose tighten the band adjusting screw to 10 Ft.Lbs. (14N*m) of torque. Once it has been torqued then back the screw off 2 turns and tighten the locknut. Be careful not to let the locknut interfere with the initial torque setting. ALSO be careful to hold the adjustment screw so it doesn't rotate from the adjusted setting when doing the final tightening of the locknut. The locknut torque is 40 lb. ft. or 54 N*m. Also don't just spin out the adjustment screw willy nilly or you could have hard parts falling out of place internally which would necessitate tearing down the transmission.
There is also an INTERMEDIATE BAND and the adjustment is the same for that one except that the number of turns which it is backed out after torquing to 10 Ft.Lbs. is 2-1/2 turns.
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