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Posted: 12/28/2002 9:44:32 AM EST
I would like to know if what looks like the the water pump pulley on a 93 Buick LeSabre can be changed out by itself or is it necessary to replace the whole water pump? Also I would like to know if the pulley is easily replaced or is there more to it than it looks? The pulley is smooth and located in the center of the engine on a aluminum casting which to me looks like the water pump. Thanks Thanks.
Link Posted: 12/28/2002 10:13:34 AM EST
Originally Posted By Am-O-Tramp: I would like to know if what looks like the the water pump pulley on a 93 Buick LeSabre can be changed out by itself or is it necessary to replace the whole water pump? Also I would like to know if the pulley is easily replaced or is there more to it than it looks? The pulley is smooth and located in the center of the engine on a aluminum casting which to me looks like the water pump. Thanks Thanks.
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All cars that I've ever worked on have the water pump and the pulley as two different parts. The pulley is always screwed to the water pump my 3-4 screws.
Link Posted: 12/28/2002 10:20:27 AM EST
[Last Edit: 12/28/2002 10:36:26 AM EST by rpd_fire]
Some of the newer cars have a pulley that is pressed on. You need to get a pulley puller. You can rent them from some parts stores. But you will probably have to pull the water pump off to remove the pulley. I usually replace both.(water pump and pulley)
Link Posted: 12/28/2002 10:50:34 AM EST
[Last Edit: 12/28/2002 10:52:53 AM EST by tc6969]
Link Posted: 12/28/2002 10:56:25 AM EST
Water pump pulleys are pretty easy to get off (alternator pulleys are harder..)
Link Posted: 12/28/2002 10:57:01 AM EST
rpd_fire and SocomCen thanks for replying. I know they are individual parts but this pulley looks like a two piece deal. The outer piece has 6? small bolts around the outside that look like they hold the outer body of the pulley (that touches the belt) onto the inner body which has the bearing.
Link Posted: 12/28/2002 11:24:36 AM EST
tc6969 I was hoping a GM mechanic might be see this thread and offer help. This pulley has more going on than your standard pulley, I want an expert's advice before I take it apart and fxxk it all up, If an expert said it would be better to take it in I would. Where I trade on Saturdays the small crew is high school and women employees that I don't feel comfortable taking advice from. Thanks
Link Posted: 12/28/2002 11:36:44 AM EST
The water pump pulley is held on with 4 bolts. As a G.M. (Buick) parts manager I sell the water pumps daily, but dont recall ever selling a pulley. Let me know if I can be of any help.
Link Posted: 12/28/2002 12:17:33 PM EST
Better question: Why do you want to replace the water pump pulley?
I know they are individual parts but this pulley looks like a two piece deal. The outer piece has 6? small bolts around the outside that look like they hold the outer body of the pulley (that touches the belt) onto the inner body which has the bearing.
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I don't know much about Le Sabres in particular, but that sounds kinda like a crank pulley...
Link Posted: 12/28/2002 1:39:52 PM EST
I don't know much about Le Sabres in particular, but that sounds kinda like a crank pulley...
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Me neither, but most crank pulleys I've seen are held on with one (huge) bolt. On the other hand, 6 bolts does seem like a lot just to hold a water pump pully on...
Link Posted: 12/28/2002 1:44:35 PM EST
[Last Edit: 12/28/2002 1:46:22 PM EST by GunLvrPHD]
It looks like the pulley mounts with as little as one bolt, according to my [b]1994 Lesabre Factory Service Manual[/b]. Also the end of the chapter mentions torque on the coolant pump to pulley bolt, size 13 (mm?) and 115 lb. inches or torque. Also those 6 bolts you see hold the whole coolant pump assembly in, so if you take them off you can remove the pump from the engine. Might be a good time to just stick in a new pump if you are having problems with the pulley? If anyone can tell me how easy or hard it is to replace the cruise control servo on a Lesabre I'd appreciate it! GunLvr
Link Posted: 12/28/2002 1:51:21 PM EST
[Last Edit: 12/28/2002 1:59:10 PM EST by prk]
I've had one vehicle where there is a fan,a fan clutch, a pulley, and then the pump. Several several small bolts held part of it together, and one big one held the rest
Originally posted by Mace: Better question: Why do you want to replace the water pump pulley?
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Ditto that. What's wrong with the pulley? I think there may be more to this problem..... If in fact you are looking at the water pump and the pulley is wobbling, it may be the pump rather than the pulley that's bad. Or did something fall into it while the engine was running???
Link Posted: 12/28/2002 5:59:11 PM EST
Link Posted: 12/28/2002 8:18:51 PM EST
Thanks guys, avengeusa has described the problem I am having, must be the pumps shaft and not the pulley. The way the pulley is made you can't see the pumps shaft. I thought coolant would have leaked out if it was the pumps shaft the way the pulley was wobbling. Thanks everyone, it was interesting reading your comments. avengeusa can you tell me if it's a simple take off or is there something I should know before I get at it. GunLvrPHD thanks for the trouble you went through to post that info, I will print it out and use it tomorrow, I really do appreciate it bud.
Link Posted: 12/28/2002 8:46:40 PM EST
Now it sounds like we're hitting the real problem. Yes, a wobbly or vibrating water pump pulley is caused by bad bearings in the pump itself. I guess the shaft seal hasn't gone yet, but if the bearings are bad, it will probably start leaking soon. I'd also take a look at your coolant to see if it might have caused the problem. Running pure water could cause corrosion which might lead to bearing failure among other things. It should be 20-50 percent antifreeze, depending on the climate. Check belt tension too - it might have been overtensioned at some point, possibly contributing to the problem.
Link Posted: 12/29/2002 4:47:07 AM EST
Okay the manual lists two more torque specs: Coolant pump to block mount: 29 lb feet. Coolant pump to front cover: 97 lb inches. GunLvr
Link Posted: 12/29/2002 5:34:19 AM EST
Thanks GunLvrPHD your info helps a bunch.
Link Posted: 12/29/2002 9:27:16 AM EST
Is this the GM V6 with the 'integrated internal water pump', or is that another one?
Link Posted: 12/29/2002 9:57:35 AM EST
Dave_A I'm going to try and get a picture of the pulley/pump, I can't answer your question. I just hope the camera's lens doesn't fog over when it get's out side. Check back later thanks
Link Posted: 12/29/2002 10:03:38 AM EST
[Last Edit: 12/29/2002 10:05:31 AM EST by Dave_A]
Just wondering... I know some people with 199X Grand Ams, who constantly complain about how much is internal/integrated into the motor (or on what requires removing the motor to service)... IIRC, the LeSabre and Grand Am use the same engines (3.4/3.8)... I don't know much about them myself, as my experience with GM is in the RWD V8 area (and yes, GM (Cadillac) DOES make a FWD V8, for whatever (absurd) reason)... And I definately have no complaints (apart from the fact that the only RWD V8 GM car I can buy new at this moment is the Vette. Fortunately, my current one is doing just fine...)...
Link Posted: 12/29/2002 10:29:44 AM EST
The pump/pulley is the part with the rusted cover directly in the center of the photo. [Img]http://www.imagestation.com/picture/sraid44/p7995a01805d405bedabcdf734a128126/fcde66dc.jpg[/img]
Link Posted: 12/29/2002 11:53:53 AM EST
Link Posted: 12/29/2002 4:02:23 PM EST
Link Posted: 12/30/2002 7:34:52 AM EST
I am glad you posted the question, I learned a bit too. Hope my water pump doesn't die but if it does I'll fix it myself. GunLvr
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