The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Filling the power steering on 71 bigblock

72SB · 05-10-2023, 09:14 AM

I just had a shop replace my gear box and watched. When he filled the pump I asked if he wanted me to jump in cab and turn wheel. He said no, he had wheels off rack and by hand just turned steering to lock one direction slowly. Added more fluid, repeat turning wheel to lock opposite direction. Said it takes a little time for the fluid from pump to "draw" into box and air to purge out. He dd the engine off, turn steering by tire by hand about 6 times before starting and then turning steering lock to lock and topping off fluid. Had to add more fluid after test drive. Not much but did add some. Said it takes a short drive to finally purge all air out.

If original style pump and box, use ATF, not PS fluid.

05-10-2023, 09:14 AM	#7
72SB Registered User Join Date: Apr 2022 Location: Moorpark, CA Posts: 720	Re: Filling the power steering on 71 bigblock I just had a shop replace my gear box and watched. When he filled the pump I asked if he wanted me to jump in cab and turn wheel. He said no, he had wheels off rack and by hand just turned steering to lock one direction slowly. Added more fluid, repeat turning wheel to lock opposite direction. Said it takes a little time for the fluid from pump to "draw" into box and air to purge out. He dd the engine off, turn steering by tire by hand about 6 times before starting and then turning steering lock to lock and topping off fluid. Had to add more fluid after test drive. Not much but did add some. Said it takes a short drive to finally purge all air out. If original style pump and box, use ATF, not PS fluid.