A/T - Binding In Reverse, No Reverse
Bulletin: 85-7325-4Date: June 1985
Ref. No.: 85-257-7325
SUBJECT: BINDING IN REVERSE, NO REVERSE
MODELS AFFECTED: SOME 1985 THM 325-4L OE AND OQ MODEL TRANSMISSIONS
FIGURE 1 - THM 325-4L TRANSMISSION NAMEPLATE YPSILANTI, MICHIGAN:
Some 1985 THM 325-4L OF, and OQ models built prior to Julian date 074 (refer to illustration) may experience a binding or dragging condition in reverse range, or no reverse operation. This condition may be caused by application of the forward clutch while in reverse range which may be due to a hydraulic feed into the 1-2 accumulator circuit of the control valve assembly.
If the condition(s) occurs, IT IS NECESSARY to replace the control valve assembly. Do not attempt to service the 1-2 accumulator bushing/valve to repair the condition(s)..
Replace 1985 THM 325-4L model OE with control valve assembly part number 8639675 and 1985 THM 325-4L model OQ with control valve assembly part number 8639804.
Refer to the appropriate service information manual for proper installation procedures.