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Symptoms:

  • Burnt clutches
  • Forward slip
  • Flare shifts
  • Delayed engagement

Cause:

Cast aluminum accumulator bore wear allows apply oil to exhaust.

Correction:

Sonnaxs anodized aluminum accumulator piston incorporates an O-Ring for positive sealing and annular grooves for better centering and wear prevention.

A750E, A750F, A760E, A760F, A760H, A761E, A960E, A960F, AB60E, AB60F, U140E, U140F, U151E, U151F, U240E, U241E, U250E

Accumulator Piston Kit
Part No. 57917E-19K

You need this if... View Instructions

Wear at the multiple accumulator bores on these various units is very common. This wear allows component apply oil to exhaust, resulting in delayed engagements, slipping or flare shifts and burned clutches. The drop-in-place Sonnax Accumulator Piston Kit 57917E-19K incorporates an O-Ring for positive sealing, even in worn bores.

  • No machining or special tools required.
  • O-Ring provides positive seal even in worn bores.
  • O-Ringed piston fits multiple locations.
  • Piston
  • O-Rings (2) 1 extra

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.

Toyota A750E/F Series Valve Body Layout

A750e f vbl thumb

Toyota A760E/F/H Series Valve Body Layout

A760e f h vbl thumb

Toyota U151E/F, U250E Valve Body Layout

Toyota u151ef  u250e

Toyota U140E/F, U240E, U241E Vacuum Test Guide

U140ef vbl thumb

January 16, 2014

Toyota A750E-A761E Identification Guide

Topics: Identification Guides Transmission Toyota/Lexus A760H Transmission AB60E Transmission AB60F Transmission A761E Transmission A750F Transmission A760E Transmission A750E Transmission A760F Transmission

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January 21, 2013

Toyota U151E/F, U250E Vacuum Test Guide

Topics: Vacuum Testing Vacuum Test Guides Transmission Toyota/Lexus U250E Transmission U151F Transmission U151E Transmission

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December 21, 2012

Toyota U140E/F, U240E, U241E Vacuum Test Guide

Topics: Vacuum Testing Vacuum Test Guides Transmission Toyota/Lexus U241E Transmission U240E Transmission U140F Transmission U140E Transmission

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December 03, 2013

Toyota A750E/F, A760E/F/H, A761E Vacuum Test Guide

Topics: Vacuum Test Guides Vacuum Testing Transmission Toyota/Lexus A760H Transmission A761E Transmission A750F Transmission A760E Transmission A750E Transmission A760F Transmission

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  • 57917e 19k combo
  • 57917e 19k combo alt
  • 57917e 19k combo alt2
  • 57917e 19k

You need this if...

Visual inspection of the bore often shows shiny patches of wear. If wear is visible, perform at Wet Air Test or Vacuum Test at the apply port. Vacuum Test must hold a minumum of 18".

Instructions