https://www.ozervnews.com

Off the compressor gear Bruce which is run off a idler gear from the crank shaft. And the compressor gear has to come off if removed from the injector side.... But as I said if I can get the cam gear off I can remove it forward still attached to the front backing plate...
Bernie .

Bernie, If you find the right size socket and a big breaker bar you can usually crack the bolt off by setting it up almost touching the chassis rail then giving it a spin with the starter motor. Just make sure that the fuel shut off is active. It will save you driving it off the stands. You will need an assistant that knows what is likely to happen.

Bernie,

Looking at the manual, I think the compressor comes out backwards.

jd

I haven't seen the manual but it looks similar to the raw water pump on my Perkins.
Gear driven off the camshaft & it just pulls out after undoing a couple of bolts.
Jon does the injector pump drive off the back of the compressor?

It drives the injector pump Bruce . Read further Jon , it shows coming off with the backing plate . I will later when its light see what page its on .
Bernie .
Jon pages...6A-9 and 6A-39 and 6A- 42 it says to leave it on backing plate unless replacing .

Ahh I didn't see those pages.

Why do you need to remove the crankshaft nut?

If you set it to TDC, won't there be timing marks on the fuel pump to align everything?

To remover the front engine cover the bolts for the compressor are inside the cover bar two which I think are to do with the taco stuff .
The crank gear is inside as well Jon so timing marks are there ..
Bernie .

Bernie

do you page page 6A-113 and 114?

I shows how to align the pump to the crank.

The font cover does not need to come off.

No Jon I don't have those pages , still have to remove the front cover its the only way to remove the compressor the bolts are on the inside of it .
Bernie .

Jon can you scan those pages and email them to me thanks .
Bernie .