Sports seat question / problem

[CharlesBrown]

Have same problem as HPG. Can hear the pump click but won't run. To access the pump I removed the seat cushion. Pump is revealed, but there's no way I can see to remove it with just the cushion off. It is held in palace with 4 small nuts. The configueration of the pumps' feet is such that a socket can not be used for their removal. Assume the seat must come out, right? How much of a problem will that be?
Thanks CB

 

[6speeder]

....The configueration of the pumps' feet is such that a socket can not be used for their removal. Assume the seat must come out, right?

If access to the pump housing bolts is blocked, removing the seats is a cinch. Unplug the power, move the seat to the full forward position, and then to the full rear position for access to 4 nuts (the bolts are secured to the chassis).

There are 2 small plastic trim panels located at the front of the seat track. They are held in place by plastic fasteners that you may destroy when removing them, so be careful. If damaged during removal, they are readily available at any parts store.

CB.. I see you have a 1988, not sure if everything is the same as a 1993.

 

[HPG]

Have same problem as HPG. Can hear the pump click but won't run. To access the pump I removed the seat cushion. Pump is revealed, but there's no way I can see to remove it with just the cushion off. It is held in palace with 4 small nuts. The configueration of the pumps' feet is such that a socket can not be used for their removal. Assume the seat must come out, right? How much of a problem will that be?
Thanks CB

Actually, mine is a 93 and had only three bolts. They were a bi*** to get out. they're metric. I did get them out without removing the seat. The rest was easy. If you hear a click, the diaphram is split and the pump is jammed. When you take it apart, be careful ow how it comes apart. I had it together and apart several times. The plunger has a hole where it fits on the motor. When reinstalling, be sure the hole is pointed toward the moror. Take a good look when you get the pump off. I took another look at mine and found it is now working, it is just a bit slow. Now, the other one should be a snap since I should not make the same mistake. When you pull off the three hoses , mark them so you put them back correctly. It's not a big thing if you don't. If the hoses are very hard to pull off, take your time. I broke one of the tips and had to make a Rube Goldberg repair. If they are too tight. just take a razor and split the end, there is plenty of hose. The diaphram is the challange. I covered the rubber with masking tape. Drew a square, found the center, used a compass and drew a 1 1/4 circle. Set compas at 5/8" When you get to the plunger, be sure to remove the old part of the diaphram. I didn't and that jammed the pump. One of several mistakes. otfl Wen you slide the valve assesembly back in, it's a little trickey to get the hole in the plunger to align with the pin on the motor shaft. It will go with a little patience. Good luck.

 

[HPG]

Oh, one more thing. If you do have to pull the seat, when you put the motor back in, us self taping screws from the top. Put a rubber washer between the pump and the seat bottom. If you have to pull them again, it will make life easier.

 

[HPG]

.... mine is a 93 and had only three bolts. They were a bi*** to get out. they're metric.

Howard, what component are you referring to, the seat, or the pump?
My instruction for removing 4 nuts was for seat removal.

No, the pump only has three bolts. If you look at the pic you can just see the one on the top side.

Gotta go, beer and pizza night..

 

[Rabbit]

Take a peek at this info..http://www.geocities.com/Yosemite/7491/tips.html#Lumbar Pump Repair

 

[HPG]

Take a peek at this info..http://www.geocities.com/Yosemite/7491/tips.html#Lumbar%20Pump%20Repair

That's great, if they still have the diaphrams. Thanks

 

[born2saw]

I did this repair on my 1990. You do not need to take the whole pump out of the seat. I lifted the cushion and removed the small screws in the side of the pump housing. This allows you to remove the diaphragm assembly to repair the diaphragm. I did not do the greatest job of cutting the innertube in a perfect circle, but it still works great. See the article on this reapir in the knowlege center:

http://www.corvetteactioncenter.com/kb/question.php?qstId=163

Good luck.

 

[HPG]

I guess from other comments, the seats changed in later years. I have a 93. The pump on the passenger side could be romoved without pulling the pump. The drivers side sits in a small depression in the seat frame and could not be removed. That one is sitting on my work bench and I'll replace the diaphram tomorrow. I would try tonight but after 2 Jack Daniels on the rocks. I'll do it tomorrow

 

[CharlesBrown]

To make a new diaphragm from a bicycle innertube... get a 1-1/4" iron close nipple from the hardware store. Grind one end of the O.D, @ 45 degrees so that the I.D. remains sharp and in tact. Place the rubber on a hard smooth surface and use the nipple like a punch

 

[HPG]

That would work. But if not, you need a good sharp scissors to cut a smooth circle. It must fit the pump housing perfectly. Now both pumps work. I'll probably never use them after today.

 

[6speeder]

That would work. But if not, you need a good sharp scissors to cut a smooth circle. It must fit the pump housing perfectly. Now both pumps work. I'll probably never use them after today.

Howard, if you are ever in need of FREE diaphragms, just send me a pm. I bought this set of gasket punches on ebay today:

http://cgi.ebay.com/10-pc-HEAVY-DUT...461088892QQcategoryZ11704QQrdZ1QQcmdZViewItem

 

[HPG]

Howard, if you are ever in need of FREE diaphragms, just send me a pm. I bought this set of gasket punches on ebay today:

http://cgi.ebay.com/10-pc-HEAVY-DUTY-HOLLOW-PUNCH-SET-Gasket-rubber-tools_W0QQitemZ4461088892QQcategoryZ11704QQrdZ1QQcmdZViewItem

No, but thanks both are now working with the diaphrams I cut.