I recently bought a nice 1981 XJ6 Series 3. I would like to remove the air pump, which I understand will not cause any problems and get rid of a piece of equipment which can fail(the pump). It appears that the inlet to the air cleaner box will need to be sealed, as will the inlets in the cylinder head. I'd appreciate other owners' thoughts on this before I proceed.

Thank you.

 

You've already covered the basics. People remove them all the time. I can't remember positively if the air pump shares a belt with something else. I *think* it has its own belt, tho, which simplifies things.

Cheers
DD

 

Hi JagXJ6S3,

That Air Pump is easy to remove.

Either loosen the belt tensioner to remove the belt, or just cut the belt if it is giving you grief.

Check it, but there should only be the air pump on the belt.

Remove the plumbing first as it makes more room to get at the air pump mount.

Before you start, have six brass blank screw plugs ready to fill the holes in the head. Don't over tighten as you are screwing into aluminium.

I'm trying to find my notes on the screw size. They were over the counter at any good gas fitting store.

Cheers,

Nigel

 

the pump is a Delco / GM pump,

the air rail is expensive to replace,

the "s" shaped steel pipe is no longer available,

the diverter valve is expensive to replace,

the check valve adaptor is expensive to replace,

the check valve itself is also expensive.

 

I removed it with no ill effects--quite frankly, the thing kept disconnecting anyway. It is on it's own belt. As I recall, the threads on the 6 screw plugs were British Pipe Thread and not American, so I ordered them online. There is another thread on here with the sizing, but of course now I can't find it.

 

I've removed two from past critters Neither was a Jaguar. On one, I merely cut the rail to free the fittings. Then tapped the centers for Allen screws.
Voila, neat plugs that screwed tight in.


Here it would spoil an expansive part? so, thinking needed.


In my bits shed is one of them. A left over from my conversion. Just the pump, I think. The pulley and fasteners went to a Jag guy that forgot to remove his when he turned in the seized one as a core.


Carl

 

Hi JagXJ6S3,

Parts you need are 1/8 BSP Taper Plugs x 6

In Oz they cost me $1 ea

Cheers,

Nigel

 

I used these from McMaster-Carr: British Standard Threaded Brass Pipe Fitting
1/8 Pipe Size, BSPT Male Hex-Socket Plug

McMaster Part number 4860K131

Perfect fit.

 

Bringing this thread back from the grave. I pulled my locked up air pump off the engine and removed all hoses and plugged the holes in the head using the plugs from McMaster that Paul suggested above. Everything has gone well so far.





My question for those that have done this mod, the A/C compressor location is connected to the bracket that was supporting the air pump. I'd like to dump that air pump bracket to further clean things up, but would like to know what others have done to anchor the compressor. The current rod in red is used now. Has anyone come up with something that attaches to points shown in green or blue?



Thanks,

Eric

 

hi: i want to remove the air rail intact. what tool do i use to remove the nuts? is it safe to use heat as they may be stubborn.

 

I removed mine to clean it and paint it using a normal open end wrench because I had no special tool. The wrench needs to grab the nuts securely at an almost 90 degree angle, then I used a second wrench to turn the first wrench counter clockwise. The nuts loosened without much hassle. I did use PB Blaster penetrating spray ahead of removal.

 

Hi Eric,
Did you figure out a solution and can you share to me?
I am fixing a failed A/C clutch on an 87 xj6 4.2 and found that there was no belt tensioner for the A/C Compressor. Perhaps contributed to the clutch failure. I intend to remove the air pump also, and have the belt tensioner for the air pump.
Many thanks!!