power steering pump part#? 87' HMMWV with 6.2 non turbo

[DWagg]

my power steering pump is kaput, dead, pfft. Does anyone have a useable napa part#? OR know of a good place to get one?

 

[leo4x4]

https://www.real4wd.com/zedSuite/commerce/cart.aspx

 

[leo4x4]

Call them Monday they will have or for sure

 

[tage]

15909826 brand new from A/C deco. The pump itself is the same on just about all GM from the 90's through 00's

 

[DSO_351]

The pump assembly was revised a couple times. The element (pump) is available as a kit from Napa & others. The housing, tank or reservoir will need to be reused since it is specific to M998.

 

[DWagg]

Thanks Ya'll! I ended up taking DSO_351's advise. I removed the pump from the reservoir, if you've never done this before use a 6 point socket & remove the 2 shallow stud bolts & the 1 fitting on the back, then knock the pump out, hit on the pump not the reservoir. Once the stud bolts & fitting are removed its just an oring that's holding the pump in there. Humvee HMMWV power steering pump is Napa part# is 81-1411 it only costs $42.99
I just couldn't see myself paying $250+, for a $50 pump.

 

[tage]

That's an economical method to replace the pump if the case is still good.

 

[DSO_351]

Glad it worked out for you. As more owners will soon find out, this vehicle can be rather expensive.

 

[NormB]

Thanks Ya'll! I ended up taking DSO_351's advise. I removed the pump from the reservoir, if you've never done this before use a 6 point socket & remove the 2 shallow stud bolts & the 1 fitting on the back, then knock the pump out, hit on the pump not the reservoir. Once the stud bolts & fitting are removed its just an oring that's holding the pump in there. Humvee HMMWV power steering pump is Napa part# is [FONT=Open Sans, sans-serif]81-1411[/FONT]it only costs $42.99
I just couldn't see myself paying $250+, for a $50 pump.

How's this holding up for you? Most of the websites I've seen (Kascar, HPG for example) post this warning with their pumps:

IMPORTANT NOTE: GENUINE AM GENERAL. AFTERMARKET POWER STEERING PUMPS WILL NOT APPLY ENOUGH PRESSURE FOR THE HUMMER DUE TO THE COMBINATION OF THE HYDROBOOST SETUP AND THE STEERING/BRAKING WILL NOT WORK PROPERLY. AM GENERAL USED A SPECIAL POWER STEERING PUMP NOT FOUND IN AFTERMARKET PUMPS.

Thanks.

 

[tage]

Lies.... Lol
It's a gm pump

 

[TOBASH]

How's this holding up for you? Most of the websites I've seen (Kascar, HPG for example) post this warning with their pumps:

IMPORTANT NOTE: GENUINE AM GENERAL. AFTERMARKET POWER STEERING PUMPS WILL NOT APPLY ENOUGH PRESSURE FOR THE HUMMER DUE TO THE COMBINATION OF THE HYDROBOOST SETUP AND THE STEERING/BRAKING WILL NOT WORK PROPERLY. AM GENERAL USED A SPECIAL POWER STEERING PUMP NOT FOUND IN AFTERMARKET PUMPS.

Thanks.

Lies.... Lol
It's a gm pump

Not the first time I've heard an automotive supplier imply that parts are superior to others based on magical pixie dust.



T

 

[3000gt]

Well my napa pump didn't hold up to my hydraulic winch. From what I understand, the vanes in the pump are a little different in he oem pump

 

[tage]

Prolly a cheap rebuild. In my experience I haven't had any success with rebuilds.
I bought a new one through the caddy dealer.

 

[Gear Report]

Well my napa pump didn't hold up to my hydraulic winch. From what I understand, the vanes in the pump are a little different in he oem pump

Same here. I got a replacement pump from o'reilly and put it in the original military housing. Fit fine. Works great for steering and brakes, but not enough umph to pull much of anything with the winch.
If you have a hydraulic winch, then do yourself a favor and just get the military PS pump and do it right the first time. Else, you will end up upgrading to one later.

 

[Bulldogger]

I'm having no issues with my NAPA pump that I swapped onto the military reservoir, etc. I do not have a winch, FYI.
BDGR

 

[David172]

I know I am 2 years late to this conversation, but I am going through power steering pumps on my 1991 Hmmwv don't know what to do next. I am on the third pump with two of them being from Advanced auto. Rebuilds I figure. They work fine for 6 months or so, then begin whining, leaking, and then go out. I can't find it leaking anywhere except at the pump housing itself. The lines and cooler seem to be ok as far as leaks. I am ready for the 4th pump in 26 months and would like to buy military OEM for this. Can anyone tell me where to get a NEW military pump? Any other advice or things to check would be appreciated. I am not a mechanic and have a lot to learn. Thanks!

 

[Gear Report]

I... I am ready for the 4th pump in 26 months and would like to buy military OEM for this. Can anyone tell me where to get a NEW military pump? Any other advice or things to check would be appreciated. I am not a mechanic and have a lot to learn. Thanks!

My bigger concern is what is killing your pumps!
Sounds like time to thoroughly flush the PS system and look for any clues as to what is killing them. I ran a parts store pump on my m1038 with no issues. So, I suspect it isn't the pumps causing your issues.

 

[David172]

My bigger concern is what is killing your pumps!
Sounds like time to thoroughly flush the PS system and look for any clues as to what is killing them. I ran a parts store pump on my m1038 with no issues. So, I suspect it isn't the pumps causing your issues.

I figure you have to be right. It is just logical. I have suctioned the fluid out of the reservoir and replaced it with the Dextron IV automatic transmission fluid a couple of weeks ago. The stuff that came out looked clean and good. I don't know if the shop that installed them before used ATF or normal power steering fluid. Could that be it? It has not solved the loud whining that gets worse the closer to "the end" that I get. I saw on another related post the the lines could be connected in the wrong sequence, but mine does not whine when a new pump is installed so I didn't think that would be the problem.

 

[Bulldogger]

I’d replace all your piping as a precaution. Make sure it’s high pressure power steering tubing, not fuel or oil tubing. I further recommend using fuel injection style clamps, instead of hose clamps. I’ve had good results with them and they don’t cut into the outer jacket the way Mr Gasket style clamps do.

Can’t say what’s killing your pumps for certain, but I can say I used a NAPA pump and have had zero trouble.

Best of luck tracking down the problem.

Bdgr

 

[David172]

I’d replace all your piping as a precaution. Make sure it’s high pressure power steering tubing, not fuel or oil tubing. I further recommend using fuel injection style clamps, instead of hose clamps. I’ve had good results with them and they don’t cut into the outer jacket the way Mr Gasket style clamps do.

Can’t say what’s killing your pumps for certain, but I can say I used a NAPA pump and have had zero trouble.

Best of luck tracking down the problem.

Bdgr

Thanks so much for the good advice. It won't be expensive, eliminates another possible issue, and should make for a more reliable vehicle afterwards.