SPRING 4-3 PRE-STROKE VALVE (5R55N)
# 43680

SPRING 4-3 PRE-STROKE VALVE (5R55N)

Symptoms:

  • Code 734, 735
  • Solenoid C Code
  • No 4th
  • No 5th

Cause:
Breakage of the 4-3 pre-stroke valve spring prevents proper valve function.

Correction:
Replace with the reduced-stress Sonnax spring.


Complaints of no 4th or 5th gear, codes 734 and/or 735, and solenoid C codes can occur on the 5R55N due to a broken 4-3 pre-stroke valve spring. The 4-3 pre-stroke valve controls the apply and release rate of the intermediate servo and direct clutch, which should be applied in 4th and 5th gear. The Sonnax 4-3 Pre-Stroke Valve Spring addresses these complaints. This spring is not used on 5R55W & S units.

  • Spring is made from chrome-silicon alloy, which allows higher working stresses than typical music wire spring material.
  • Spring configuration reduces operating stresses at the critical regulating positions of the valve by 8%.

SONNAX Installation Instructions

Type of Product: Springs & One Way Clutches
Years:
Alternative #: