Transmission Parts Allison 1000/2000/2400 Valve Body Valve / Sleeve

Symptoms:

Low line pressure
Delayed Drive
Delayed Reverse

Cause:

The worn manual valve bore or spools allows function-critical hydraulic pressure to escape directly to sump and/or adjacent circuits, exhibiting low line pressure and related engagement delays.

Correction:

Restore critical hydraulic control by refurbishing the worn bore with the Sonnax tool kit and installing the oversized Sonnax manual valve.

1000/2000/2400

Oversized Manual Valve Kit
Part No. 37000-28K

Fits '00–'15 units only.

Tooling:

F-37000-TL28
VB-FIX

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In '00–'15 Allison^® 1000/2000/2400 units, wear within the manual valve bore can cause reduced line pressure, the symptoms of which are delayed Forward and/or Reverse engagement. Severity and location of wear along the manual valve bore dictates the specific symptom. Regardless of wear location, once fluid pressure leakage due to wear affects the time required to build sufficient actuating pressure within a circuit, delayed engagement is the result.

Sonnax oversized manual valve kit 37000-28K can eliminate escaping oil restoring hydraulic control to the circuits routed through the manual valve bore.

Hardcoat anodized aluminum valve combats premature wear
Additional annular grooves added to reduce wear rate

Contents

Valve
Selector Pin

Valve Body Layout

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.