Pressure Regulator Spring Tool, Allison 1000 2001-2019

The Merchant Automotive Pressure Regulator Spring Service Tool holds the main pressure regulator spring back on the Allison 1000 transmission so the retaining pin can be removed and reinstalled. Use it when installing a new pressure regulator spring or shim on 2001-2019 Duramax trucks. The spring is under heavy load, so trying to compress it and remove the pin by hand is awkward and risks losing parts.

The tool holds the spring compressed and lets you release it under control.

Key Features

• Holds the pressure regulator spring compressed while the pin is removed
• Powdercoat bracket
• M8 x 1.25 x 70 mm hex-head screw with clip-on barrel nut
• Reusable shop tool

Benefits

Pressure regulator spring and shim changes are a common part of Allison 1000 line pressure upgrades and valve body service. With this tool, one person can compress the spring, pull or reinstall the pin and release the spring slowly, with no pliers slipping and no spring launching across the shop.

Frequently Asked Questions

What is it used for?

It holds the pressure regulator spring back so the pin can be removed and replaced when you install a new spring or shim.

Does it include a spring or shim?

No. This is the tool only.

Will it work on the 10-speed?

No. This tool is for the Allison 1000 used through 2019.

Fitment

For the Allison 1000 transmission in 2001-2019 Chevrolet Silverado and GMC Sierra 2500HD and 3500/3500HD with the 6.6 Liter Duramax LB7, LLY, LBZ, LMM, LML or L5P.

What's Included

• (1) Powdercoat tool bracket
• (1) M8 x 1.25 x 70 mm hex-head screw
• (1) M8 x 1.25 clip-on barrel nut

For warranty information or to submit a claim, see our Warranty Form.

Details:

• Engine Manufacturer: Duramax
• Liter: 6.6 Liter
• Engine Designation: LB7, LLY, LBZ
• Engine Years: 2001-2019
• Transmission Code: Allison 1000
• Finish: Powdercoat

Applications:

• 2001-2019 Silverado/Sierra 2500HD/3500HD LB7/LLY/LBZ