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Symptoms:

  • Lube failures
  • Delayed engagement
  • Converter drain back

Cause:

Poor converter line feed pressure caused by worn-out PR bores leads to delayed engagements as well as pump bushing and lube failure.

Correction:

The Sonnax valve kit offers increased stability while lube regulation improves converter feed at low RPM and high throttle conditions.

WARNING!

This pressure regulator valve and manual valve 22771-09 can be used independently, but are of greatest benefit when used as a pair.

42RE, 42RH, 46RE, 46RH, 47RE, 47RH, A727, A904

Oversized Lube Regulated Pressure Regulator Valve Kit
Part No. 22771A-07K

Original valve must match '78-later design


You need this if... View Instructions

In Chrysler A727, A904, 42-46-47RH/RE units (RWD '78-later with TCC), the cooler/converter charge circuit is not opened until the pressure regulator valve moves far enough to flow oil. The industry fix of drilling a small orifice between line pressure and cooler circuit ensures flow to the converter/lube circuit, but the hole also increases the converter drain back problem because ATF can drain when the engine is turned off. Sonnax offers a standard-size pressure regulator valve, 22771A-02K, that resolves these problems, but this valve will not repair severely worn valve bodies. In such cases, Sonnax recommends installing oversized pressure regulator valve kit 22771A-07K for increased stability and improved lube regulation.

  • Oversized valve is designed with an internal check valve that allows oil to flow into the converter charge circuit as soon as the vehicle is started
  • Internal valve shuts down once line pressure reaches normal levels
  • With engine off, the internal check valve prevents fluid from draining out through the orifice, reducing converter drainback

Also available, Sonnax line pressure plug and sleeve kit 22229-01K can be used to replace all OE sizes and has a reduced plug to increase reverse boost.

  • Valve
  • Plug
  • Spring

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.

Chrysler 42-46-47-48RH/RE Valve Body Layout

Chry 42 46 47 48rhre vbl thumb

November 14, 2016

Chrysler 46RE, 46RH, 47RE, 47RH Vacuum Test Guide

Topics: Vacuum Testing Vacuum Test Guides Transmission Chrysler 46RH Transmission 47RH Transmission 46RE Transmission 47RE Transmission

Read Now

  • 22771a 07k combo
  • 22771a 07k
  • 22771a 07k alt

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.

  • 22771a 07k in test