belt/pulley misalignment
Thread Starter
Instructor
Joined: Jan 2012
Posts: 201
Likes: 0
From: some hole in the ground town- camp verde:) arizona
belt/pulley misalignment
all new brackets, new PS pump and pulley, new alt, new water pump and pulley, getting new crank pulley probably on monday... alt lines up with water pump but no where near in regards to PS pump. water pump pulley rubs the pump, but i'll shim it and i'll have to shim the alt bracket too, but it still won't line up with the PS. why does this stuff not line up?
i'll change my question a little bit- why does the alternator not line up with the PS pulley?
http://s1163.photobucket.com/albums/...edbelts031.jpg
i'll change my question a little bit- why does the alternator not line up with the PS pulley?
http://s1163.photobucket.com/albums/...edbelts031.jpg
Last edited by 75vetteman; May 18, 2012 at 03:57 PM.
Pro
Joined: Aug 2010
Posts: 698
Likes: 8
From: Stockholm Sweden
I belive your pulley may not be in its final position, it may have to be pressed further in on the shaft.
How does the belt for your alterntor run?
On my stock (72 bigblock) setup i had a 2-grove pulley where the outermost grove was for the alternator only..
//Ricky.
How does the belt for your alterntor run?
On my stock (72 bigblock) setup i had a 2-grove pulley where the outermost grove was for the alternator only..
//Ricky.
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,445
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
In your pictures the PS pulley is off at a angle. Somewhere along the line the outer PS bracket from the motor mount got bent. You have to remove the bracket and bend it to the point of where the PS pulley will be parallel to the crank pulley.
The only variable is the guy who installed the damper on the crank. If is is not seated flush when installed the crank pulleys end up farther out than the Water pump, alt, A/C, and PS
The only variable is the guy who installed the damper on the crank. If is is not seated flush when installed the crank pulleys end up farther out than the Water pump, alt, A/C, and PS
Race Director
Joined: May 2006
Posts: 18,734
Likes: 2,582
you posted the same question a few days ago on the General forum
http://forums.corvetteforum.com/c3-g...ameter-is.html
you were asked what the part numbers were of the various parts you purchased?
http://forums.corvetteforum.com/c3-g...ameter-is.html
you were asked what the part numbers were of the various parts you purchased?
Thread Starter
Instructor
Joined: Jan 2012
Posts: 201
Likes: 0
From: some hole in the ground town- camp verde:) arizona
the bracket isn't bent. the belt was just sitting there trailing off under the car making it look like the pulley was at an angle as for part numbers, 15x 3915337 is the alt bracket, and i can't see any on the ps brackets though they came right off a 75 vette so i know they're correct. i posted the number for the crank pulley though that post isn't showing up for some reason.
sorry about the overpost stuff. i keep asking questions about one part that overlaps another problem that gets drug into the conversation. as for the discussion you have copied melwff, it was through that that i learned i have the wrong crankshaft pulley and is why i'm getting a new one on monday, and it answered why the PS belt rubs the frame- too big of a crankshaft pulley
72 and 75 are way different setups, but if y'all have more pictures i'd appreciate it.
some certified insane dude- i truly think this sums up how my life is right now.
sorry about the overpost stuff. i keep asking questions about one part that overlaps another problem that gets drug into the conversation. as for the discussion you have copied melwff, it was through that that i learned i have the wrong crankshaft pulley and is why i'm getting a new one on monday, and it answered why the PS belt rubs the frame- too big of a crankshaft pulley
72 and 75 are way different setups, but if y'all have more pictures i'd appreciate it.
some certified insane dude- i truly think this sums up how my life is right now.
Last edited by 75vetteman; May 18, 2012 at 04:01 PM.
Thread Starter
Instructor
Joined: Jan 2012
Posts: 201
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From: some hole in the ground town- camp verde:) arizona
also, i was the last one to R&R the damper and that was many months ago and everything still lined up. it wasn't until recently that i got rid of this strange setup and tried going back to the original equipment and that's when the problems started.
Safety Car
Joined: Jun 2004
Posts: 4,372
Likes: 223
From: Beecher Illinois
You're trying to run one belt around both the power steering pulley AND the alternator pulley?
I'm not sure for 75(I have access to a 73 and 76 I can look at), but on my 78/79s, the power steering pulley is spun by a dedidicated belt that goes directly to the damper pulley, nothing else. Front most belt, closest to the radiator.
There is an add on pulley for the damper that adds a third groove for the power steering.
edit....looked at both the 73 and 76 I have access to. Both have the pulley and belt setup I described on my 78/79s.
Your 75 will be the same.
I'm not sure for 75(I have access to a 73 and 76 I can look at), but on my 78/79s, the power steering pulley is spun by a dedidicated belt that goes directly to the damper pulley, nothing else. Front most belt, closest to the radiator.
There is an add on pulley for the damper that adds a third groove for the power steering.
edit....looked at both the 73 and 76 I have access to. Both have the pulley and belt setup I described on my 78/79s.
Your 75 will be the same.
Last edited by KapsSA; May 18, 2012 at 10:42 PM.
Thread Starter
Instructor
Joined: Jan 2012
Posts: 201
Likes: 0
From: some hole in the ground town- camp verde:) arizona
You're trying to run one belt around both the power steering pulley AND the alternator pulley?
I'm not sure for 75(I have access to a 73 and 76 I can look at), but on my 78/79s, the power steering pulley is spun by a dedidicated belt that goes directly to the damper pulley, nothing else. Front most belt, closest to the radiator.
There is an add on pulley for the damper that adds a third groove for the power steering.
edit....looked at both the 73 and 76 I have access to. Both have the pulley and belt setup I described on my 78/79s.
Your 75 will be the same.
I'm not sure for 75(I have access to a 73 and 76 I can look at), but on my 78/79s, the power steering pulley is spun by a dedidicated belt that goes directly to the damper pulley, nothing else. Front most belt, closest to the radiator.
There is an add on pulley for the damper that adds a third groove for the power steering.
edit....looked at both the 73 and 76 I have access to. Both have the pulley and belt setup I described on my 78/79s.
Your 75 will be the same.
so it's one belt for the PS and a different belt for the alt? and then a third belt for the AC? i'm also having another problem with the new water pump. since it had a water pump for an early C3 it was set up differently. i pulled the small adapter pipe (for the heater core) out of the old and installed it into the new water pump on the pass side sticking straight out to the side. the problem is that there is no clearance between the pipe and the AC bracket so the hose can't fit on it. what is the fitting supposed to look like? mines about 2 inches and perfectly straight. i'm thinking it needs to be longer to get past the AC bracket and then the hose can connect to it. can't get pictures right now, but maybe later
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Thread Starter
Instructor
Joined: Jan 2012
Posts: 201
Likes: 0
From: some hole in the ground town- camp verde:) arizona
well, everything lines up. power steering belt still hits the frame so i'm just going to run w/out it. and people stop telling me to get the AIM. i don't have the money for one. if anybody has some more pictures i'd sure appreciate it.
also figured out the heater core fitting. got a longer one from NAPA. was surprised they had some. no other auto parts store did.
also figured out the heater core fitting. got a longer one from NAPA. was surprised they had some. no other auto parts store did.
Drifting
Joined: Aug 2005
Posts: 1,443
Likes: 65
From: Wauconda IL
well, everything lines up. power steering belt still hits the frame so i'm just going to run w/out it. and people stop telling me to get the AIM. i don't have the money for one. if anybody has some more pictures i'd sure appreciate it.
also figured out the heater core fitting. got a longer one from NAPA. was surprised they had some. no other auto parts store did.
also figured out the heater core fitting. got a longer one from NAPA. was surprised they had some. no other auto parts store did.
Thread Starter
Instructor
Joined: Jan 2012
Posts: 201
Likes: 0
From: some hole in the ground town- camp verde:) arizona
the beast is back on the road! 
after sitting for 2 months, it started right up w/out having to charge the battery
steering is a little jerky w/out the PS, but i can live with it for a while.as for "is like $20 on the internet"- my wallet is completely empty after spending so much $ on parts and the gas to and from Phx were i had to get all these parts from. spent less than $200 on all the correct brackets, and fan though which wasn't bad. unfortunately spent that much in gas
thanks a bunch for everyones help on this. who would have thought that the hardest part of this car was using the correct brackets and accessories.
Last edited by 75vetteman; May 23, 2012 at 04:02 PM.
Melting Slicks
Joined: Jul 2009
Posts: 3,264
Likes: 3
From: Vero Beach FL
Hey Vetteman
Most of the vendors sell the AIM for around $20. You can learn a lot from the vendors online catalogs lots of photos that reference AIM. Use the online catalog to cross reference the parts you have to what they show as correct for your year. AIM will tell you the correct part numbers but if you google the part numbers from the parts you have the internet will tell you what they go to.
Most of the vendors sell the AIM for around $20. You can learn a lot from the vendors online catalogs lots of photos that reference AIM. Use the online catalog to cross reference the parts you have to what they show as correct for your year. AIM will tell you the correct part numbers but if you google the part numbers from the parts you have the internet will tell you what they go to.