Tool Required VB-FIX Required

Printpartsummary
Symptoms:
  • B Clutch breakage
  • Delayed Reverse
  • Erratic line pressure
  • No Reverse
  • Poor shift quality
Cause:

Excessive valve and bore clearance due to wear.

Correction:

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

Tool Required VB-FIX Required

ZF5HP24, ZF5HP24A

Oversized Pressure Regulator Valve Kit

Part No.

139740-01K

Oversized Pressure Regulator Valve Kit
  • 139740-01k_combo

  • Oversized Pressure Regulator Valve Kit

Small_139740-01k_combo Small_139740-01k

ZF5HP24, ZF5HP24A

Oversized Pressure Regulator Valve Kit

Part No. 139740-01K

  • Valve
  • Spring

Complaint:

  • B Clutch breakage
  • Delayed Reverse
  • Erratic line pressure
  • No Reverse
  • Poor shift quality

Cause:

Excessive valve and bore clearance due to wear.


Correction:

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

Wear is commonly found at different areas in the ZF5HP24 pressure regulator valve bore. 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. The 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.

Required Tools

Related Parts

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.

  • Test Locations

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Contact a Sonnax Distributor to purchase this part.