Diamond T Cummins fuel pump

Gidday,I pulled the fuel pump of the Cummins (driven off the back of the compressor) thinking I will find a star drive like what is on my L10 T Line but found what looks like a gear drive and a govenor weight. Or do I have to pull the Compressor off as a unit. This doesn't seem right to me. To the illinformed it looks like I split the pump. Am I going in the right direction or did I bugger up. It's times like this a book comes in handy.
David

Hi,
What engine is it??
Perhaps I have some info I can send you. PM if you wish.
Gilly

Gidday,
It's a 175 Turbo (J series?) Ian Judd of Wagga Transport converted it from a 160 using factory parts. Looks factory but is tagged 160. Having problems with idle and running rich so having the pump looked at. Had the turbo stripped and inspected and was told these are now obsolete and parts are vertually non existant. Have already spent a bit of money on the motor and if pump is no good will consider putting a 6v53 and 15 speed. All depends on what pump bloke says. Thanks
David

the turbo , just see a turbo specialist , they should be able to match up a modern one , your truck has a adaptor on the turbo already as the original turbo has 6 bolts, the original 175 turbo was all cast iron , with the PT pump , there is a chap in wagga , Denis Obrien , obriens diesil,cummins..... he has fixed a lot of 160 pumps in the last few years...

there is a young lad in west Sydney that fitted a VL commodore turbo to a 160 in a inter , she hoofs along aparently

t you have pulled the pump apart not off !!!!!!

the pump comes of the compressor by 4 7/16 bolts revieling the 3 lug drive and nylon 'spider' insulator
what you have undone is the front cover of the pump!!!!! revieling the gear drive for the gearpump and governor bobweights this cover is held on by 7 1/4 bolts and the bottom one is usually a allen head

in the centre of the governor weights theres a small spring [weight assist spring] which is colour coded
if it falls out and gets lost your in a bit of trouble mate

to reassemble the pump the bobweights drive a shaft at the top of the pump [governor plunger ] which has a flat
drive tab that slots inbetween the weights and rests on the spring and has to lined up as well as the gearpump drive below the bobweights

to achieve this you will have to remove the front cover from the compressor with the 4 7/16 bolts

if your not confident to do this pm me and ill nail it back together

re turbo c175 had a 6 bolt switzer turbo and parts are ex u.s and rare if it was a 160 converted to c175
its a piston change injector change and timing change which is a stepped key in the cam gear and I doubt this has happened !!! most back then just fitted a turbo and called it a 175 and gained bugger all in hp

[]I built 2 of these into Turbo,s with low comp pistons @ retarded timing in the '70's when they needed an overhaul. We used Rayjay turbo's from a racecar guy in Moorabin 'cause turbo's weren't as available as now. Dennis O'Brien did the fuel systems &from memory we used 112 instead of 86 injectors for the right flow rate.We dynoed one at Dennis'it put 163 HP onto the rollers @2600 & still had 160 @2000 bear in mind this is after driveline losses. The blown motors ran smoother than the C160 & a lot smoother than the CF160 with the Advanced timing.The late Jack Bateman came into the shed when I was running the first one up & said "Hey boy that sounds just like Mosses [Wettenhall] C175 he had in the 630 Diamond which was good enough for me considering Cummins had told me it couldn't be done

Pat,
Thanks for that.Managed to get the front off the back of the compressor and put it back together. Took it to a fuel place in Smithfield on Friday arv and he told me it was missing the front half. All good now,will take it back in to him early next week when I have time.
This might be a stupid question but does it have an oil feed from the compressor or it looks like a rear seal in the compressor might be leaking. When I pulled the front off the back of the compressor there was a bit of oil in there. I need to replace the timing case seal in front of the compressor anyway.
As for the turbo, it has 4 mounting bolts on the base and this mounts onto a 6 bolt adapter. Does this sound right as the conversion looks factory. I will be seeing a relative of the previous owner at Clarendon tomorrow and will be quizzing him a bit over it. He told me that it was converted using factory bits early in the piece-pistons,injectors,turbo,etc.
On the block it has the engine tag with all the usual info and at the bottom it says Cummins Australia-Melbourne. You can see where it was originally painted in the Cummins "Tan" and then painted yellow all over. Funny that i thought these were supposed to be fully imported complete trucks. Have you heard of anything like this before?
Thanks David

Sorry Binder, I forgot to thank you too.
David

T the block you have is a 'c a u' and built originally in melb most went to ihc for the c line 1800,s the earlier ab 148 had a imported c series painted gold . the cau engines were faun . d.t,s were sold here with factory fitted c175,s and were badged p 5000 d
the earlier 630-4 d,t,s had j series factory fitted
as for turbo c175,s had a 6 bolt switzer, all early cummins turbos were 6 bolt till the introduction of the
ffc block ntc 350, in the early 70,s turbos were then 4 bolt mount cummins supplied a adapter which you have

those switzers were hard to get parts for back then
I found a turbo of a 237 mack worked well on the 175,s
and ive got one with adapter still layin here somewere??
but with the variety of turbos out now im sure there,s something better

lookin at the pic of your truck its factory cummins fitted
the aircleaner n bracket are a give away