2500

hydraulic pump just went out, 97 12v, any installation tips?

orielly's got a reman hydrostatic pump for $79 + $45 core. will be picking it up today and installing.

any installation tips?

2500

just got back from picking up power steering/hydroboost pump at oriellys.

read the factory workshop manual, which says little. looks pretty straight forward. be careful not to damage seal going in...

anything else?

2500

97 12v, replaced power steering pump, Still doesn't work, what next?

vzdude

Is it actually turning? That one has a vacuum pump in front if it right? IIRC, you can see the shaft with a mirror to make sure it is turning. Also.....pull the vacuum line off the vacuum pump and see if there is vacuum?

2500

OK.. thanks for the help. gear inside is turning for sure.
I turned over motor aligning up vacuum pump gears using 26mm nut on fan clutch.

don't know if power steering pump is turning.
will check for vacum

2500

just checked.. pump has vacuum.

I'm positive pump drive gear was properly dropped into vacuum pump slot.

next up is put a high pressure gauge on output hose...
any other suggestions?

vzdude

I don't know for sure , but the shaft in the vacuum pump may be 2 piece. I am guessing that the back half isn't turning. I've never had a new pump not pump. You can always take the return line off, and see if it is flowing any fluid.

2500

thanks for helping... just checked with mirror and can't see a thing.

will yank pump back off tomorrow to see if vacuum pump shaft is broken in two.

getting late ... 10:30pm temps dropping. looks it's not happening tonight. thanks,

torquefan

Are you sure it's bled and not airlocked? These things are horrible to get the air out. The first little while you run it, sometimes they won't do anything, then suddenly it'll burp out some air and start whining and foaming like crazy. Then you spend the next hour bleeding it.

2500

OK.. many thanks. I'll jack front end up... steer end to end to bleed out air.

2500

issue fixed... system was extremely low on fluid. took 1.25+ qts to competely fill system back up.

jacked up front end, turn steering wheel end to end for 5 minutes. was starting to get some fluid movement. keep working steer wheel and brake pedal for another 10+ minutes. steering pump kept making noises.

check fluid levels multiple times, kept dumping fluid until foam overflowed. what it took to fix was repeatly dumping fluid in until foal overflowed. eventually system finally filled up with fluid without air.

doing this job in cold weather increases difficulty of bleeding out.
now back to normal....

looks like I need to write up a How to change out a power steering/hydro boost pump.

thanks everyone!!!!

vzdude

Glad you got it taken care of! I never thought about the fluid level!

torquefan

Glad to hear it's fixed.

2500

reporting back... system leaked down again... twice

filled system full twice since bleeding out. drains out at rate of 1/2 quart+ a day.

took CTD to car wash yesterday. trying to ID exactly where leak is coming from. I'm thinking it's coming from seal in steering box.

oil all over again... looks like power steering pump I replaced was good the entire time.

Dave Miller

I put a light greenish transmission dye from NAPA in my power steering to locate the leak. If you have a flourescent light you can see it better but the fluid is greenish anyhow so its easy to spot by eye.