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Symptoms:

  • No engine braking in D2
  • 3-2 Harsh
  • 5-6 Harsh
  • 5-6 Slip

Cause:

B2 accumulator bore wear allows critical pressure loss.

Correction:

Recover hydraulic control and restore normal shift operation by reconditioning the bores and installing Sonnax oversized B2 accumulator pistons.

WARNING!

Required tool kit F-147741-TL13 is no longer in production. Check with your distributor for availability.

A760E, A760F, A760H, A761E, A960E, A960F, AB60E, AB60F

Oversized B2 Accumulator Pistons
Part No. 147741-13


You need this if... View Instructions

Toyota/Lexus vehicles with listed transmissions may have harsh or slipping shifts and loss of engine braking in D2 range. This is often caused by accumulator piston bore wear that allows leakage in the B2 circuit. In extreme cases, the pistons can become jammed in the bores. Reconditioning the bores and installing Sonnax oversized B2 accumulator pistons 147741-13 will restablishes control of the B2 circuit to restore normal shift operation and feel.

  • Contains two pistons - both are necessary to service one valve body
  • Hardcoat anodized aluminum pistons combat premature wear
  • Annular grooves and lengthened spool help center piston in bore to reduce future side-load wear
  • Oversized B2 Accumulator Pistons (2)

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 A760E/F/H Series Valve Body Layout

A760e f h 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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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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  • 147741 13 combo
  • 147741 13

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. Bores must be tested concurrently.

  • 147741 tl13 test