Tool Required VB-FIX Required

Printpartsummary
Symptoms:
  • Burnt converter
  • Harsh lockup
  • Lube failures
  • TCC apply & release concerns
Cause:

Severe wear of the valve and bore allowing EPC and/or balance pressure loss.

Correction:

The Sonnax secondary pressure regulator valve repair kit with upgraded materials and minimal clearances prevent wear and restore proper hydraulic function.

Tool Required VB-FIX Required

U140E, U140F, U151E, U151F, U240E, U241E, U250E

Oversized Secondary Pressure Regulator Valve Kit

Part No.

57917E-16K

Oversized Secondary Pressure Regulator Valve Kit
  • 57917e-16k_combo

  • Oversized Secondary Pressure Regulator Valve Kit

Small_57917e-16k_combo Small_57917e-16k

U140E, U140F, U151E, U151F, U240E, U241E, U250E

Oversized Secondary Pressure Regulator Valve Kit

Part No. 57917E-16K

  • Valve
  • Spring
  • End Plug

Complaint:

  • Burnt converter
  • Harsh lockup
  • Lube failures
  • TCC apply & release concerns

Cause:

Severe wear of the valve and bore allowing EPC and/or balance pressure loss.


Correction:

The Sonnax secondary pressure regulator valve repair kit with upgraded materials and minimal clearances prevent wear and restore proper hydraulic function.

The continuous oscillation of the secondary regulator valve wears the valve spools and valve body bore at the contacting surfaces. Such wear results in TCC pressure irregularities and valve instability. If pressure is high, harsh lock-up clutch engagement can result. If the pressure is too low, the TC clutch cannot achieve complete lock-up. Continuous clutch slippage will lead to burned clutch material and converter. Under these conditions loss of mileage and poor drive-ability are to be expected.

  • Oversized hard-coat anodized valve is manufactured to highly precise tolerance to resist wear.
  • The oversized valve and included matched spring restore OEM regulated pressure specifications.
  • Kit allows salvage of previously non-repairable valve bodies and avoids searching for, and purchase of, expensive replacement valve bodies.

Required Tools

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Valve Body Layouts

Sonnax valve body layouts provide a detailed overview of individual units making it quick and easy to determine what’s available for the specific valve body you’re working on. See all Sonnax valve body layouts.

Valve Body Layout Toyota U151E/F, U250E
Valve Body Layout Toyota U140E/F, U240E, U241E

Related Tech Articles

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