Symptoms:

  • Broken clutch drum
  • Forward slip
  • Slip codes
  • Erratic line pressure
  • Poor shift quality

Cause:

Excessive valve and bore clearance due to wear.

Correction:

The Sonnax oversized pressure regulator valve kit restores correct valve-to-bore clearances and circuit integrity as well as preventing future wear in this area.

ZF5HP24, ZF5HP24A

Oversized Pressure Regulator Valve Kit
Part No. 139740-01K


You need this if... View Instructions Find a Distributor

Wear is commonly found at different areas in the ZF5HP24 and ZF5HP24A pressure regulator valve bores. Wear at the inner portion of the bore causes high pressure spikes leading to broken drums, pistons or other parts, as well as restricting converter/lubrication flow. Wear at the spring end of the bore allows line pressure to exhaust resulting in low line pressure, soft shifts and burnt clutches. Sonnax oversized pressure regulator valve kit 139740-01K restores valve-to-bore clearances so the pressure regulator valve can maintain correct pressures.

  • Annular oil grooves support the valve and reduce wear rate
  • Restores valve-to-bore clearances maintaining correct pressures
  • Valve
  • Spring
  • ZF5HP24, ZF5HP24A Oversized Pressure Regulator Valve Kit 139740-01K
  • ZF5HP24, ZF5HP24A Oversized Pressure Regulator Valve Kit 139740-01K

You need this if...

Vacuum testing at the port(s) indicated fails to hold the recommended minimum in-Hg, or if wear is visually detected.

ZF5HP24, ZF5HP24A Oversized Pressure Regulator Valve Kit Vacuum Test Locations