Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1971 Buick Sportwagon 5.7L Eng, Eng CD TC, Standard TransFACTORY OEM SERVICE PROCEDURE
Automatic Level Control: Overhaul: Diaphragm
- If diaphragm is loose or has holes, replace it as follows: Remove and discard retainer. Remove diaphragm plate, disphragm, second diaphragm plate, and corprene washer from piston.
- Install new corprene washer, plate, diaphragm (with outer lip toward second stage side), and first diaphragm plate. Plates should be installed with lip on both plates facing outward from diaphragm. Use a 13/16" deep socket to press diaphragm retainer into position (see illustration).
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.