Power Steering Pump
Thread Starter
Melting Slicks
Joined: Jan 2005
Posts: 2,658
Likes: 4
From: Clifton Park NY
Power Steering Pump
Any of you guys replace the P/S pump before?
I'm replacing mine and I have a bit of a dilema.. easy exchange right?...NOT!
Rebuilt pump by Cardone
Check this out.
Pump going into bracket
Pulley pressed on
oh yeah its all the way on and no its not backwards either.
Shaft coming through the hole
Bolted back up and it sticks out to far by about a 1/4 inch.
Now heres a pic of the other 84 Power Steering pump
Supposedly this is a direct replacement... right!.. Is it just me or would you also think that the area between the bracket bolt and the snap ring near the shaft is a bit longer than it should be?
Any suggestions?
Thanks
I'm replacing mine and I have a bit of a dilema.. easy exchange right?...NOT!
Rebuilt pump by Cardone
Check this out.
Pump going into bracket
Pulley pressed on
oh yeah its all the way on and no its not backwards either.
Shaft coming through the hole
Bolted back up and it sticks out to far by about a 1/4 inch.
Now heres a pic of the other 84 Power Steering pump
Supposedly this is a direct replacement... right!.. Is it just me or would you also think that the area between the bracket bolt and the snap ring near the shaft is a bit longer than it should be?
Any suggestions?
Thanks
Thread Starter
Melting Slicks
Joined: Jan 2005
Posts: 2,658
Likes: 4
From: Clifton Park NY
I see I'm not alone in this. There's no rhyem or reason why it extends further than the orginal.
I did check several stores Napa,Advanced Auto, Ecklers. Most places carry the p/s by Cardone and list as a 84-91. All have the same measurment from the bracket bolt to the snap ring.
I suppose I'll have to try a different manufacturer of the part to see if that fits.
Of course I can't get my orginal back.. it was used as the core charge and has already been shipped out. I thought for sure that someone from here would have at least replaced there P/S pump as one time or another
I did check several stores Napa,Advanced Auto, Ecklers. Most places carry the p/s by Cardone and list as a 84-91. All have the same measurment from the bracket bolt to the snap ring.
I suppose I'll have to try a different manufacturer of the part to see if that fits.
Of course I can't get my orginal back.. it was used as the core charge and has already been shipped out. I thought for sure that someone from here would have at least replaced there P/S pump as one time or another
Race Director
Joined: Nov 2003
Posts: 12,221
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From: Overland Park Kansas
2020 Corvette of the Year Finalist (appearance mods)
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Guess you can't compare the new pump to the old? Kinda looks like the shaft is too long,,,or is pulling out as you press the pulley back on.
Safety Car
Joined: Jan 2004
Posts: 3,759
Likes: 8
I keep my core until I'm done and the replacement part appears to be working.
Cardone rebuilts should be a rebuilt of the OEM part.
But I'd probably just have the store order another one and swap them out, but compare them while you are there.
Cardone rebuilts should be a rebuilt of the OEM part.
But I'd probably just have the store order another one and swap them out, but compare them while you are there.
Thread Starter
Melting Slicks
Joined: Jan 2005
Posts: 2,658
Likes: 4
From: Clifton Park NY
When I brought the core in overall length was the same, as well as shaft length, and I made certain the mounting was the same. One thing I never checked was the distance between mounting holes and end of housing.
I was in the garage playing around some more.
Here's the pic without the pulley
Pulley sitting on ready to get pressed. According to the tape measure I need to go at least 1 in to get the pulleys to align
Where I've pointed the screwdriver end, I measure that and can only press it on an additional 3/4 inch until the backside of the pulley hits the housing.
I was in the garage playing around some more.
Here's the pic without the pulley
Pulley sitting on ready to get pressed. According to the tape measure I need to go at least 1 in to get the pulleys to align
Where I've pointed the screwdriver end, I measure that and can only press it on an additional 3/4 inch until the backside of the pulley hits the housing.
Race Director
Joined: Nov 2003
Posts: 12,221
Likes: 446
From: Overland Park Kansas
2020 Corvette of the Year Finalist (appearance mods)
C4 of Year Winner (appearance mods) 2019
Edit: (Deleted orig post. I was WRONG!) I just went down and looked at my pump. Mine sits exactly as yours does! I also measured from the face of the bracket to the face of the pump. The pump should stick out about 7/8" beyond the brace. Your pic looks close to that. The only thing I can't speak to is the length of the shaft -- of if it's pulling out.
The pulley does wrap backwards OVER the pump so you might have more to go than you think! The pulley should fit flush with the end of the shaft after being pressed on though!
The pulley does wrap backwards OVER the pump so you might have more to go than you think! The pulley should fit flush with the end of the shaft after being pressed on though!
Last edited by GREGGPENN; Jun 4, 2010 at 11:30 PM. Reason: Had to correct myself!!!
Thread Starter
Melting Slicks
Joined: Jan 2005
Posts: 2,658
Likes: 4
From: Clifton Park NY
Thats exactly what I told them. Looked at me as if I had three heads!... even showed them one of my pics. They still think I'm doing something wrong. They (napa) are ordering another one. However in the mean time I am picking one up tomorrow from Autozone. its a ATSCO brand. So I'll have to wait an see how that one measures up.
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Race Director
Joined: Nov 2003
Posts: 12,221
Likes: 446
From: Overland Park Kansas
2020 Corvette of the Year Finalist (appearance mods)
C4 of Year Winner (appearance mods) 2019
Race Director
Joined: Nov 2003
Posts: 12,221
Likes: 446
From: Overland Park Kansas
2020 Corvette of the Year Finalist (appearance mods)
C4 of Year Winner (appearance mods) 2019
Thats exactly what I told them. Looked at me as if I had three heads!... even showed them one of my pics. They still think I'm doing something wrong. They (napa) are ordering another one. However in the mean time I am picking one up tomorrow from Autozone. its a ATSCO brand. So I'll have to wait an see how that one measures up.
Race Director
Joined: Nov 2003
Posts: 12,221
Likes: 446
From: Overland Park Kansas
2020 Corvette of the Year Finalist (appearance mods)
C4 of Year Winner (appearance mods) 2019
Beside the measurement of 7/8" (distance the face sits out from the bracket), I also measured the shaft. Though I had to guesstimate since my pulley is mounted, I'm saying the pulley shaft should be right about 5/8" long.
Consider this +/- 1/16".
Consider this +/- 1/16".
Thread Starter
Melting Slicks
Joined: Jan 2005
Posts: 2,658
Likes: 4
From: Clifton Park NY
LOL... no i wasn't grinding on it. Thats from a washer I was using when I was pressing on the pulley. Soft metal
Ok, measure mine its 7/8 from the bracket to the end of the housing. 1-3/4from the bracket to the end of the shaft.
Yanked and pulled on the shaft and it doesn't move at all.
Ok, measure mine its 7/8 from the bracket to the end of the housing. 1-3/4from the bracket to the end of the shaft.
Yanked and pulled on the shaft and it doesn't move at all.
Thread Starter
Melting Slicks
Joined: Jan 2005
Posts: 2,658
Likes: 4
From: Clifton Park NY
Right or wrong I used a bolt and thick washer and a impact wrench! That pulley is not going on any further than what the impact wrench did.
Burning Brakes
Joined: Oct 2009
Posts: 773
Likes: 2
From: Minneapolis MN
Update yet?I also noticed that you have aftermarket heads & it could be possible that the power steering bracket that mounts to the left side head could be causing the power steering pump to be moved further ahead & the pump you had in the car could've been off a different year vette or different model.Did you put those aftermarket heads on?Also like previously stated the pulley should be installed the same way that the pulley sat on the old pump.If you don't remember make sure its installed flush with the shaft on pump.The shaft could be also coming out due to you seating the pulley against the body of pump,the rebuild on that pump was not done properly,the pump is the wrong part or was boxed wrong from manufacturer,or aftermarket heads causing this issue.I bet your getting pretty good at installing & removing that pulley
Keep us updated
Keep us updated
Thread Starter
Melting Slicks
Joined: Jan 2005
Posts: 2,658
Likes: 4
From: Clifton Park NY
Update yet?I also noticed that you have aftermarket heads & it could be possible that the power steering bracket that mounts to the left side head could be causing the power steering pump to be moved further ahead & the pump you had in the car could've been off a different year vette or different model.Did you put those aftermarket heads on?Also like previously stated the pulley should be installed the same way that the pulley sat on the old pump.If you don't remember make sure its installed flush with the shaft on pump.The shaft could be also coming out due to you seating the pulley against the body of pump,the rebuild on that pump was not done properly,the pump is the wrong part or was boxed wrong from manufacturer,or aftermarket heads causing this issue.I bet your getting pretty good at installing & removing that pulleyKeep us updated
Keep us updatedI removed ALT, then the reservoir, then the bracket. Disconnected hoses. bought a reman pump and reversed installation. And it just doesn't line up. Its not rocket science. But I do agree... I think its something with the pump.
And your right.... the pulley removal and pressing on is getting quite easy...lol
Race Director
Joined: Nov 2003
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From: Overland Park Kansas
2020 Corvette of the Year Finalist (appearance mods)
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The only other difference I saw is that mine doesn't have the button-looking nub on top of the PS pump (as seen thru the bracket).
Team Owner
Joined: Dec 2007
Posts: 20,974
Likes: 261
To be honest, i think if you can take it back, you probably should if you feel it is not right. You might kick your self later if the part is not to the specs it should be.
I am thinking if you bought a part that is a replacement it should be a direct replacement of the part you gave them, something looks a miss with that thing in there.
Okay, I just looked at mine, and the PS pulley is exactly flush with the water pump pulley. Something is definitely wrong with yours. Even if you get it to fit right, the thing might be defective or have the wrong bearings/shaft, or something in it when it was rebuilt to make it stick out so far. Could be anything, but not worth risking balance issues or anything else IMO.
I would get another one that is the exact replacement part for the part I turned in.
I am thinking if you bought a part that is a replacement it should be a direct replacement of the part you gave them, something looks a miss with that thing in there.
Okay, I just looked at mine, and the PS pulley is exactly flush with the water pump pulley. Something is definitely wrong with yours. Even if you get it to fit right, the thing might be defective or have the wrong bearings/shaft, or something in it when it was rebuilt to make it stick out so far. Could be anything, but not worth risking balance issues or anything else IMO.
I would get another one that is the exact replacement part for the part I turned in.
Last edited by pologreen1; Jun 5, 2010 at 12:56 AM.
Team Owner
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From: Lacey WA RVN 68-69
NCM Sinkhole Donor
I see I'm not alone in this. There's no rhyem or reason why it extends further than the orginal.
I did check several stores Napa,Advanced Auto, Ecklers. Most places carry the p/s by Cardone and list as a 84-91. All have the same measurment from the bracket bolt to the snap ring.
I suppose I'll have to try a different manufacturer of the part to see if that fits.
Of course I can't get my orginal back.. it was used as the core charge and has already been shipped out. I thought for sure that someone from here would have at least replaced there P/S pump as one time or another
I did check several stores Napa,Advanced Auto, Ecklers. Most places carry the p/s by Cardone and list as a 84-91. All have the same measurment from the bracket bolt to the snap ring.
I suppose I'll have to try a different manufacturer of the part to see if that fits.
Of course I can't get my orginal back.. it was used as the core charge and has already been shipped out. I thought for sure that someone from here would have at least replaced there P/S pump as one time or another
One of the things about Cardone (and similar retail-level parts) is that there are usually two grades; A-1 Cardone is the typical retail or parts store stuff and Cardone "Select" is a professional grade. Our shop buys some Cardone parts and every box we get says "Select" on it. Not sure if this means a better grade of parts that went into the reman unit or if tolerances are closer.
Does anyone know if the pump housing is Corvette-specific? Could it be that the housing may have come from another GM vehicle where the attachment points are the same but the housing snout is longer? Could the shaft be from another GM pump but simply has the same diameter but different length?
My 87 pump is starting to whine after about a half-day of autocross events and the last track day I did, it was really loud until it cooled down. I'm thinking of having Turn One do a rebuild for me with me sending my pump to them.
Race Director
Joined: Nov 2003
Posts: 12,221
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From: Overland Park Kansas
2020 Corvette of the Year Finalist (appearance mods)
C4 of Year Winner (appearance mods) 2019
Also, as you pointed out, you needed 1" to get it aligned but only see 3/4". That's your 1/4" difference.
Sounds like your shaft is too long. (Or you have to press it on 'til 1/4" protrudes.) Maybe the plastic cap will still install? Maybe this pump covers more than one model/installation?