Tool Required VB-FIX Required

Printpartsummary
Symptoms:
  • Bang shifts
  • Bind-up
  • Excess Reverse pressure & distorted housings
  • Flare shifts
  • Harsh upshifts
  • Low cooler flow
  • Overheating
  • TCC cycling
  • TCC slip
Cause:

Excessive solenoid pressure is caused by line pressure side-loading the steel solenoid modulator valve along with the continuous oscillation of the valve, which wears the cast aluminum bore.

Correction:

The modified valve and high-grade aluminum sleeve allow the bore to be refurbished, and prevent side-loading of the valve and future wear.

Tool Required VB-FIX Required

U151E, U151F, U250E

Solenoid Modulator Valve Kit

Part No.

27741-13K

Solenoid Modulator Valve Kit
  • 27741-13k_combo

  • Solenoid Modulator Valve Kit

Small_27741-13k_combo Small_27741-13k

U151E, U151F, U250E

Solenoid Modulator Valve Kit

Part No. 27741-13K

  • Valve
  • Sleeve
  • Spring

Complaint:

  • Bang shifts
  • Bind-up
  • Excess Reverse pressure & distorted housings
  • Flare shifts
  • Harsh upshifts
  • Low cooler flow
  • Overheating
  • TCC cycling
  • TCC slip

Cause:

Excessive solenoid pressure is caused by line pressure side-loading the steel solenoid modulator valve along with the continuous oscillation of the valve, which wears the cast aluminum bore.


Correction:

The modified valve and high-grade aluminum sleeve allow the bore to be refurbished, and prevent side-loading of the valve and future wear.

  • High-grade aluminum sleeve resists wear and provides porting to prevent valve side-loading.
  • Hard-coat anodized aluminum valve incorporates annular grooves to prevent wear and side-loading.
  • Replacement spring resets regulated pressure to OE specification.

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

Related Tech Articles

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