Product Description
RE5R05A A5SR1/2 5EAT "A" or "B" Pilot Valve Kit
No tooling required
In Jatco/Nissan RE5R05A units, pilot valve "A" feeds the line pressure modulating solenoid, and the TCC solenoid. Pilot valve "B" feeds the following solenoids: direct and input clutch, front brake band, low coast brake and high and low/Reverse. Various shift complaints, lockup apply and line pressure problems can occur depending upon which bore is worn. Sonnax "A" or "B" pilot valve kit 63741-13K allows the valve body casting to be restored. With the improved materials and valve support, the service life can be extended beyond that of the OE casting.
- Hardcoat anodized aluminum valve combats premature wear
- Annular grooves have been added to the valve for better centering in the bore
- The highly wear-resistant Sonnax sleeve provides over 50% more support than the OE casting
- New calibrated springs are included for restoring OE hydrualic pressure for either the "A" or "B" pilot valve
Symptoms
- Delayed engagement
- Erratic shifts
- Flare upshifts & clutch distress
- Delayed Forward
- No Forward
- Delayed Reverse
- No Reverse
- Premature TCC apply
- Firm TCC apply
Cause
Wear at the inboard end causes excessive feed pressure. This floods the solenoids, reduces reaction time, resulting in harsh shifting and high line pressure. Wear at the outboard spool allows fluid to leak into the sump port reducing solenoid modulator pressure. This loss has the most affect on engagements and boost oil for line pressure rise.
Correction
Sonnax wear-resistant sleeve and valve restores control of feed oil pressure sent to critical solenoids.
Contents
- Valve
- Sleeve
- "A" Spring Silver
- "B" Spring Red
