March 09, 2021
Why Do I Drill the Pump? Preventing Excess 6L80 Series Line Pressure with a Drop-In Sonnax PR Valve
Andrew Jessiman
6L80 Series Pump Drilling Demo with Small Drill Bit Vise
Presented by Jim Mobley
Ever had the small drill bit break and cause havoc while installing the Sonnax GM 6L45, 6L50, 6L80, 6L90 pressure regulator valve kits? Here is how to fix that issue and most others when using small drill bits in your portable drill motor with standard-size Jacob chuck: create a bit vise out of the red plastic tube commonly sold with aerosol spray cans. It makes drilling the .039" balance hole for Sonnax pressure regulator valves a breeze.
Watch the video to see how easy it is to make a vise and the basics of valve installation. Click here to read the step-by-step instructions.
Learn More
March 17, 2021
6L80 Series Pressure Regulator Valve Repairs: Pump Drilling Explained
May 22, 2023
Transmission Repair Tip: How to Use Small Drill Bits with a Portable Drill Motor
Jim Mobley
Related Units
Related Parts
Required
Recommended
6L45, 6L50, 6L80, 6L90
Oversized Pressure Regulator & Boost Valve Kit 104520-07K
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Helps cure:
- Erratic line pressure
- High line pressure
- Low line pressure
- Clutch slippage
- Harsh shifts
- Low cooler flow
- Burnt clutches
- No cooler flow
- Overheated transmission
- Converter concerns
While Sonnax makes every effort to ensure the accuracy of technical articles at time of publication, we assume no liability for inaccuracies or for information which may become outdated or obsolete over time.