4R100 Hydraulic Cross Channeling Problems

Joined
Aug 10, 2015
Messages
141
Reaction score
10
Location
Maryland
The valve body area of the case often deflects causing leaks ( low/no apply pressure) or cross channeling.
There is a substantial gap between the center support and case. Sonnax offers a shim to fill that gap.
It must be carefully filed to fit your gap. Valve body surface must be checked with a straight edge.
Center support bolts should never be finally torqued until final assembly of the bore and the transmission is in the horizontal position. MANY disregard this a problem especially when not using a shim because the tension of the overdrive spring torques against the center support and the feed bolts.
9DF468CB-B9E7-42DB-BF40-5BB92809BA5E.jpeg
9DF468CB-B9E7-42DB-BF40-5BB92809BA5E.jpeg
 

Latest posts

Members online

Top