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.
  • RE5R05A "A" or "B" Pilot Valve Kit 63741-13K
  • RE5R05A "A" or "B" Pilot Valve Kit 63741-13K

You need this if...

Either a Wet Air Test or a Vacuum Test in the location shown, result in leakage. Vacuum test must hold a minimum of 18.

RE5R05A "A" or "B" Pilot Valve Kit Vacuum Test Locations