Printable Version of Topic

Click here to view this topic in its original format

914World.com _ 914World Garage _ Air pump part needed

Posted by: MarkG Feb 26 2005, 01:35 PM

Shop says the 'layshaft' on the crank that drives the air pump is seized up. Tried for 4 weks to find one.....

What is he talking about? I se no parts blow up showing how the air pump is driven but I know it has to off of the crank or cam....

Colorado DMV told me I will get an emissions waiver and can register my car (since its so old I only have to spend $75 trying to fix it) BUT...ALL emission parts have to be present and functional.

Anyone have this drive pully/shaft or whatever it is?

No air pump = no waiver = no registration. Period. This is far too nice a car to sell off or part out but I'm getting to that point real quick.

Posted by: skline Feb 26 2005, 01:42 PM

Let me check with Clayton, I think we have one of these laying around.

Posted by: Slowpoke Feb 26 2005, 04:21 PM

If you can't find one, let me know. I have a good one on one of my spare engines.
Peter

Posted by: Cap'n Krusty Feb 26 2005, 05:23 PM

I have one sitting right in front of me. Bearing's good, rubber is solit and well bonded ............ It could leave today if you're in a rush. The Cap'n

Posted by: MarkG Mar 2 2005, 12:17 PM

thanks guys, will let you know....depends on how successful shop is on final attempt to get it through full test.

I did talk w/emission waiver guy, sounds like I will have no problem *as long as everything is intact* - which is where I may have problem - I need to at least make it look like smog pump it working! Maybe a good dose of STP on belt so it slips on the frozen lower pully but still spins the pump.....don't know, trying to get creative!!

Posted by: Dave_Darling Mar 2 2005, 01:19 PM

"Frozen lower pulley??" Probably a broken lower pulley...

The smog pump was driven by a pulley that was attached to a pedastal bolted to the middle of the cooling fan. Waaaaay down in the center there. There was a rubber bit somewhere in the pedastal or in the pulley itself, presumably to help cushion any shocks from the engine's firing or some such.

The common fault seems to be that the rubber in the pulley breaks, which means the pulley no longer turns when the fan turns.

This is often caused by the pump seizing up solid because the belt "falls off" so the pump does not turn and rusts or whatever internally.

Good luck finding an intact pulley assembly.

--DD

Posted by: SLITS Mar 2 2005, 01:28 PM

Here ya go:

user posted image

Posted by: MarkG Mar 2 2005, 03:02 PM

Ironic thing is the PO had to add the pump and a CAT to it 2 years ago to pass (and he did) Calif emissions; he put maybe 10k miles on it post install.

Pump spins fine, it is the lower wahtever that is seized......

May be if I can convince DMV that the broken part is just plain NLA, and since my car runs so close to meeting emissions without it, they will give me a waiver.

Otherwise I will just drive it with expired Calif plates....Colorado Law Enforcement isn't bloated with MENSA candidates, should be able to get by for a year or more!

Posted by: Cap'n Krusty Mar 2 2005, 03:13 PM

As I said the day the request was posted, I have one. In fact, I have two, they're very nice, and they're for sale. The Cap'n

Posted by: MarkG Mar 2 2005, 04:41 PM

Thanks Cap'n should know in next day or so......the shop spent 2 weeks trying to find one, may I can get them to buy the other one