Thread: PAS Pumps and more pump questions.

The timing gear for the PAS pump is part of the pump assembly. You will only require the timing cover (and pump with front outlet) if your cover doesn't have the pump mount.

Hi Steve, are you using an Endless Air compressor? I'm just using std sanden compressors until they get noisy then put another 1 on! I have the SD508 or 517 ttype compressor that has the fittings that are pointing up not rearwards. There are lots of different end plates on sanden type compressors and the model number shows what type of end plate and fittings.

My pas pump is side outlet, but my motor has been raised up so the short oil filter will not hit front propshaft, the rear filter is remotely mounted. My bonnet has been lifted so it clears, just, the motor. The outlet on the pump just clears the ram housing on the 4 bolt steering box.

Ive done alot of severe offroading, and even bent front axle housing hitting a hole at 90kmh, but nothing has touched.

Originally Posted by steveG

Ideally you want to get hold of the pump that has the outlet at the front. Most of the truck ones that I've seen have the outlet pointing towards the RH side, which can give clearance issues with the steering box in a 110 (esp. the 3-bolt box). I managed to find a front outlet pump at a truck wrecker, but I had to rebuild it as the internals were stuffed.

There is a larger pump which I'm pretty sure is from the 6bd1 and fits onto the same mount and drive gear.

I recently fitted a converted Sanden compressor for onboard air, but its just the usual belt driven setup. If you happen to go that way just make your own brackets unless you can get hold of the original LR ones. I got brackets from a truck motor but had clearance issues between compressor and the LH engine mount as the mount is shorter (and closer to the block) in a LR than it is in a truck.

Steve

I'm using the 715?? compressor (7 piston one - larger than the 508) with ports that point upwards. I did a bit of conversion myself, plugging the balance hole in the valve plate, fitting a grease nipple and giving it a decent gob of grease in the body. Only been on there for about 6 weeks but got a decent workout on our Cape York trip. Will see how long it lasts.

Steve

Thats sounds like what Endless Air does to their compressors! It will be interesting to see the longevitty of it!

Originally Posted by steveG

I'm using the 715?? compressor (7 piston one - larger than the 508) with ports that point upwards. I did a bit of conversion myself, plugging the balance hole in the valve plate, fitting a grease nipple and giving it a decent gob of grease in the body. Only been on there for about 6 weeks but got a decent workout on our Cape York trip. Will see how long it lasts.

Steve

Originally Posted by Lotz-A-Landies

now just need to find out if 8-97081999-0 the Isuzu number for the 4BD2 PAS pump will supersede 8-97078879-0 the pump for the 4BD1

Anyone know if the 4bd2 PAS pump will slot into the 4bd1?

Just bumping this, as they're on ebay for a good price.

Originally Posted by mark2

Just bumping this, as they're on ebay for a good price.

Which one?
This one?
NEW Buffalo USA Isuzu 4BD1T Power Steering Pump SAP44306 1160QA 44306 1160QA | eBay

Originally Posted by Bearman

The Perentie RFSV has a dual cyl belt driven clutched air compressor but finding one is nigh impossible. I have been on the lookout for one for several years. Maybe one day when all the spares are sold off but don't hold your breath waiting. As said if your engine has the 3 bolt plate on the timing cover under the pump drive you can fit a gear driven ps pump from either a 4b or 6b engine. Some Stage 1 motors had no provision for the ps pump on the timing cover.

ITs not clutch driven...

Its dog engagement.

you have to stop the engine, turn the pump crank to line up the engagement pins and start the engine at idle.

you cant run the engine much over 900RPm as there is a fly weight on the engagement that throws out above that and disengages the spring loaded engagement pin.

the pumps dont last anyway usually snapping off one of the reeds and are as slow as all hell.