Trying to remove the water pump to install an pettit fan switch. I know, I know, it can be done without taking the water pump off but I did not realize that until I had loosened the water pump and broken the seal so now I have to put on a new gasket.

I've removed alternator, air pump, intercooler, support member under intercooler, etc.

The only thing left is 3-4 insulated wires that run in front of the lower metal tube intake portion of the waterpump. I hate these basturds.

Do I need to disconnect them? Two of them look to run into the rats nest area.

Any tips would be a big help.

 

You're talking about the oil metering pump lines and harness? You shouldn't have to move those just to R&R the water pump if they're routed properly.

 

It should just be the 7 bolts that hold the thing in.

 

Those are the oil metering lines and the wires for the OMP. There might be a thin metal bracket that holds them to the water pump housing - it's bolted to the housing itself.

Once you get it loose, just ease it forward and double-check things. Those lines/wires are brittle, and if they break or anything you're in for a LOT of work.

Might also help to get a good light in there and an inspection mirror so you can really see up in there.

Dale

 

I thought those lines were for the OMP. I did unbolt the metal bracket that had them strapped under the water pump but they still seem pretty tight, and I have to pull the pump off the studs a good 4 inches or so.

There just is not that much slack in the wires.

Do they look link they're in the stock location? The original owner was very intent on keeping everything original and I saw no signs of him ever removing the water pump or doing anything other than change the belts and other normal maintenance.

 

Ah, yeah. Those are the OMP lines. UGH. You might have to remove the OMP. (I thnk it's one of the most annoying jobs on the RX myself)

Here's are those connections:

 

If you're just going to take the pump off, you shouldn't have to disconnect the OMP lines. If you plan on taking off the housing behind it, you have to remove the lines on the OMP side... at least that's what happened to me. I ended up just taking the entire thing off and replacing the gasket for both the w/p and the housing. I think cantgostraight mentioned this somewhere (do a search), that there is a possibility of compromising the housing gasket when you take off the w/p and it is good practice to replace it too... so I did, no leaks

 

Here's the OMP. It's held in by 3 (I believe) bolts. Careful on reinstall not to strip them. What a PITA.

 

The damn water pump seems to be a most annoying task as well. Bring them on. I did the fuel filter a few months ago so what the hell.

Any trick to disconnecting? I have the factory service manual in the garage but it can be a bit vague.

 

Yeah I needed to get to the back of the entire pump so I was pulling it all off, pump cover intact although I'll probably re-gasket it as well.

Off go the lines I guess.

 

So leave all lines connected and just remove the OMP and get it out of the way?

Sounds good to me.

I'll try to find the right torque specs.

 

Is there anything else I should do while I have this all apart. My radiator hoses still seem nice and soft. I'm already replacing the thermostat.

 

Don't remove the OMP, you don't have to do that... just remove the oil lines that go to it and move them out of the way. Use a small crescent wrench to get to the bolts. Be prepared to get the gaskets that go on the banjo fittings too, there's two for each line. If you disconnect the OMP harness connector you can move that out of the way as well... Make sure to mark the lines so you know which one goes where, I'm not sure if order matters, but I don't want to take chances

here's a pic:


EDIT: BTW, I have a spare BNIB gasket for the housing (not the W/p) if you want it for cheap.

 

^^ I'm impressed. I had previously stripped a bolt on my OMP so I was pulling the whole thing anyways.

Here are some pictures w/ torque specs so you know what you're looking at. I think you're gonna have to get the lines and the electrical plug off it in order to get your housing out.

I dunno though, it just seems easier to pull the whole omp (3 bolts w/ 1 small gasket) to me. I'd be concerned about getting the electrical plug OFF the bottom of the OMP b/c the oil pipe is RIGHT there.
Your call I guess.

Hope it helps!

 

I'm going to just pull the OMP. I'd rather just put one new gasket for the OMP and not mix up the lines, or break the electrical connection.

Thanks to all of you for the help. I really do appreciate it. These pictures are great.

 

Cool. I forget who posted them but there are like 197 of the reference photos and was in a zipped file.

It's way too big for an email.. like 49MB.

 

I recommend getting a new 'O' ring for the OMP then. It's cheap and that one will be smashed pretty flat. But that's just me.

And be gentle with those lines. Don't flex them any more than absolutely necessary.