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85 k blazer with 6.2 diesel

Maybe some of the J-B weld got in the pump & was forced into the hydroboost unit and now a passage is plugged up in it--or one of the new hoses,or steering box.. ?..--seeing you can steer it with the engine off with no power assist,and stepping on the brakes seems to make the pump strain also leads me to think its a restriction somewhere..or,too much of a load on the steering components,like the stabilizer is seized up,etc.

This one is certainly a puzzler..:thinking:
 
diesel4me said:
Maybe some of the J-B weld got in the pump & was forced into the hydroboost unit and now a passage is plugged up in it--or one of the new hoses,or steering box.. ?..--seeing you can steer it with the engine off with no power assist,and stepping on the brakes seems to make the pump strain also leads me to think its a restriction somewhere..or,too much of a load on the steering components,like the stabilizer is seized up,etc.

This one is certainly a puzzler..:thinking:
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everything is new i first put the pump still did it,then i put the hydro booster still did it,replaced all the hoses still the same then i changed the gear box and still the same ,im going to try the shock on the tract bar to see if thats it
 
Try putting a pair of matching belts on the pump since you don't have two belts on there now.

3 of my trucks have the dual alternator CUCV set up. If the drivers side alternator belt is loose enough to squeal. Then the power steering pump does a mild version of what you are experiencing.

Another of my trucks has the a/c compressor over there. I had a compressor clutch/pulley bearing fail last summer while on the road far from home. I cut what little was left of the belt off to get home. Heavy steering or braking the rest of that drive caused the pump to stop pumping.
 
After watching the vid several times I think you have a slipping belt.

I've always had a hard time getting the power steering belt tight enough on my 6.2s.

And it will help if you add the second belt.
 
blazinzuk said:
After watching the vid several times I think you have a slipping belt.

I've always had a hard time getting the power steering belt tight enough on my 6.2s.

And it will help if you add the second belt.
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im going to check the shock on the front tract bar it see if its binding up then check the rest of the suspension cuz some people have mentioned it also then ill try 2 belts thx
 
Barrman said:
Try putting a pair of matching belts on the pump since you don't have two belts on there now.

3 of my trucks have the dual alternator CUCV set up. If the drivers side alternator belt is loose enough to squeal. Then the power steering pump does a mild version of what you are experiencing.

Another of my trucks has the a/c compressor over there. I had a compressor clutch/pulley bearing fail last summer while on the road far from home. I cut what little was left of the belt off to get home. Heavy steering or braking the rest of that drive caused the pump to stop pumping.
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thanks for the help... i put a new pulley on but they only had a single pulley option so i got that and a new belt im going to look at the shock on the front tract bar then maybe try adding a 2nd belt .. i still have the double pulley thx again
 
wow i would like to thank everyone for ur help and advice i think i have found the problem... i retighten the belt got it a lil tighter then with i check again it was loose... so when i was lookin at the pump when i tighten it again i saw it move ... i found the big bracket with the ac mounting bracket and power steering pump broken where the pump tightens up at ,, thanks again and maybe this can help someone else thanks again
 
Louie Vasquez said:
wow i would like to thank everyone for ur help and advice i think i have found the problem... i retighten the belt got it a lil tighter then with i check again it was loose... so when i was lookin at the pump when i tighten it again i saw it move ... i found the big bracket with the ac mounting bracket and power steering pump broken where the pump tightens up at ,, thanks again and maybe this can help someone else thanks again
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This makes good sense. It's one of the few things that the P/S and hydroboost circuits have in common.

FYI, I'm able to run my P/S pump on one properly tightened belt. Two belts are nicer than one belt, but one should be able to do the trick.
 
campfire said:
This makes good sense. It's one of the few things that the P/S and hydroboost circuits have in common.

FYI, I'm able to run my P/S pump on one properly tightened belt. Two belts are nicer than one belt, but one should be able to do the trick.
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thanks im going to weld it first then see if it works them ill see if he wants to run both belts
 
I'm successfully running on one belt.

I did really have to TIGHTEN! But my doesn't squeal at all.

Fix that bracket and I thing you will be good
 
Glad you figured it out--sad you have replaced a lot of parts for "nothing" though,but at least you know they are new now..

My pickup's 6.2 has no A/C and only one v belt for the P/S,and it never slips unless I blast through a deep puddle too fast...one belt should be sufficient,they put two on trucks with A/C--..

My '85 Suburban 6.2 had A/C and a double P/S pulley but I used only one belt and used the other sheave to power a plow pump..someone "deleted" the A/C condensor and some of the plumbing and compressor before I got it--I dont miss it ..

It is tough to get enough tension on the belt AND tighten the bolt the way it is set up,the 6.2's are worse than small blocks in this respect....this often leads to a pry bar poking holes in the pump "can",and next to rusting a hole in one,is what kills most P/S pumps..

I have put a bolt on one of the un-used holes in the pump casting behind the pulley to give a bar something to press against so you can pull hard without worrying about putting a hole in the "can"...some pumps had a flat spot where the shaft sticks out and an adjustable wrench can be used to pull the pump tight against the belt..

It would have been nice if GM rigged up some kind of a turnbuckle tension device so you could tighten the belt and then the bolts without needing 3 hands..
 
diesel4me said:
Glad you figured it out--sad you have replaced a lot of parts for "nothing" though,but at least you know they are new now..

My pickup's 6.2 has no A/C and only one v belt for the P/S,and it never slips unless I blast through a deep puddle too fast...one belt should be sufficient,they put two on trucks with A/C--..

My '85 Suburban 6.2 had A/C and a double P/S pulley but I used only one belt and used the other sheave to power a plow pump..someone "deleted" the A/C condensor and some of the plumbing and compressor before I got it--I dont miss it ..

It is tough to get enough tension on the belt AND tighten the bolt the way it is set up,the 6.2's are worse than small blocks in this respect....this often leads to a pry bar poking holes in the pump "can",and next to rusting a hole in one,is what kills most P/S pumps..

I have put a bolt on one of the un-used holes in the pump casting behind the pulley to give a bar something to press against so you can pull hard without worrying about putting a hole in the "can"...some pumps had a flat spot where the shaft sticks out and an adjustable wrench can be used to pull the pump tight against the belt..

It would have been nice if GM rigged up some kind of a turnbuckle tension device so you could tighten the belt and then the bolts without needing 3 hands..
Click to expand...
wow crazy ya but good new every thing is new lol but life lessons lol thanks for yalls help again
 
My '90 K5 with the 6.2 originally had AC. One belt ran from the crank and just to the PS pump, the second belt ran from the crank but just over part of the PS pump pulley (used it more like an idler) and then over the AC. In stock form the AC belt probably gave very little extra drive to the PS pump. However after deleting the AC and only using the PS pump I struggled for years with the belt slipping and squealing. Finally went to a second belt to fix the problem but a little more complicated because the second pulley groove on the PS was smaller, along with the groove on the crank pulley, so had to experiment a little to find the correct sized smaller belt.
 
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