pontiac Workshop Repair Guides

Pontiac Workshop Service and Repair Manuals

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Fluid Pump: Technical Service Bulletins
A/T - New Pump Removal Tool

Bulletin Number:

92-7-9

Reference Number:

277107

Publish Date:

2/92

Subject:

INFORMATION ON NEW HYDRA-MATIC 4L60 PUMP REMOVAL TOOL

Models
Affected:

1991-92 FIREBIRD MODELS

TRANSMISSION APPLICATION:

HYDRA-MATIC 4L60 (MD8)

TRANSMISSION MODELS:

All

BULLETIN COVERS:

In response to product changes made to the 1991 HYDRA-MATIC 4L60 stator shaft, a new essential tool has been released to remove the pump
assembly. The groove under the stator shaft splines has been removed, so the previous tool cannot fit onto the new shaft. The new tool is an adapter for
use with the current HYDRA-MATIC 4L80-E pump puller.

SERVICE INFORMATION:

Tools necessary to remove the HYDRA-MATIC 4L60 pump assembly include:

HYDRA-MATIC 4L80-E Pump Puller 
HYDRA-MATIC 4L60 Adapter 
HYDRA-MATIC 4L60 Forcing Screw

The HYDRA-MATIC 4L60 forcing screw is longer than the screw on the HYDRA-MATIC 4L80-E pump puller to accommodate the shorter splines on
the stator shaft.

The previous pump puller is still needed however for end play measurement, and is used on several other transmissions for pump removal.

SERVICE TOOL INFORMATION:

Tools have been shipped to dealers.

Dealers currently servicing the HYDRA-MATIC 4L80-E will receive:

J39119    -   

Oil Pump Remover and Installer Adapter
(HYDRA-MATIC 4L60 Adapter)

J37789-4A -   

HYDRA-MATIC 4L60 Forcing Screw

Dealers NOT currently servicing the HDYRA-MATIC 4L80-E will receive:

J39119    -   

Oil Pump Remover and Installer Adapter
(HYDRA-MATIC 4L60 Adapter)

J37789-A  -   

HYDRA-MATIC 4L80-E Pump Puller with
HYDRA-MATIC 4L60 Forcing Screw

SERVICE PROCEDURE:

For dealers currently servicing the HYDRA-MATIC 4L80-E:

When the new pump puller tools arrive at your dealership, unscrew the forcing screw from your HYDRA-MATIC 4L80-E pump puller and install the
new forcing screw.

For dealers NOT currently servicing the HYDRA-MATIC 4L80-E:

The pump puller you will receive already has the longer forcing screw installed.

The following procedure should be used after the transmission has been removed from the vehicle, and is secured to the workbench in a holding fixture.
The fluid filter assembly and TCC solenoid must be removed before removing the pump.

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