How To Change The Oil In My D6 Caterpillar 9u

9U D6 Engine Overhaul

i year 2 months agone #224754 by Xtremist

Hey

I was wondering where the best place would be to purchase some parts to overhaul the engine in my D6, im going to do a balance test on it right away but i have a feeling that i have three cold cylinders, changing injectors and plungers didnt help much.

thanks for the aid

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ane year 2 months ago #224757 past Ray54

Without major accident by or oil consumption I would say wait at the fuel system. What RPM is the engine running. Back 40 years ago I put a kit in 1 really did nothing. Had old guy cheque it out it was non running up to 1600 then we speeded it up, over shot the mark and ran it near 1700 high idle. Fabricated a dissimilar tractor out of it.
At commencement Cat had them at 1400, simply turned them up to 1600 latter on. The 318 engine in the DW x scraper was turned up over 2000 if I am non dislocated once more. They did have a different governor and other parts on the engine made for the scrapers. Only proves the bottom end tin can stand more than RPM than the setting used in the D6.

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1 year 2 months ago #224763 by Xtremist

Without major blow by or oil consumption I would say wait at the fuel system. What RPM is the engine running. Back 40 years agone I put a kit in one really did nada. Had quondam guy cheque it out information technology was not running upwards to 1600 so we speeded it upwardly, over shot the mark and ran it about 1700 loftier idle. Made a different tractor out of it.
At first Cat had them at 1400, but turned them up to 1600 latter on. The 318 engine in the DW x scraper was turned up over 2000 if I am not confused again. They did have a different governor and other parts on the engine made for the scrapers. But proves the bottom cease can stand up more than RPM than the setting used in the D6.

i but picked this dozer up, it was hard to laissez passer upward the bargain imo.... therers a parts cat and a good cat all for 3k.... the good cat is actually straight (serial number is 9U2564), undercarriage is all nearly brand new, has upgraded solid front idlers, has been upgraded to an oil clutch, hardnose with hydraulics, straight electric start, winch, etc. It likewise isnt beat up and all the guards and pans are at that place. It has a actually bad miss and smokes terribly but i was aware of that going into the deal. Its only running on 3 out of 6 cylinders, the smoke totally disappears if i crack all 3 of the "bad" plunger lines and the engine rpm doesnt change a bit to crack those lines. Simply your also correct we havnt totally ruled out fuel issues but figured since my begetter has the equipment needed to exercise a balance test id start with that and see what information technology shows.

Can anyone give me the proper specs to set the valves on the engine ? I tried to google it but everywhere i looked there is a different respond it seems.

Is it worth it to ready the governor to the higher rpm ? didnt the later 9u models have a bit higher horse output, im assuming this was just different settings/adjustments fabricated to the fuel organization, is it worth while to turn it up to those settings (afterwards the problems are taken care of, of course)

thanks for the info !

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1 yr 2 months ago #224764 past edb

Suggest that if you have not yet done then to adjust the valve lash and get the injection pump lifter settings checked.
I know of overhauled engines that ran no better after overhaul than earlier due to incorrect lifter settings.
Cheers,
Eddie B.

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1 year two months agone #224765 past Xtremist

Propose that if you have not yet washed so to adjust the valve lash and get the injection pump lifter settings checked.
I know of overhauled engines that ran no meliorate after overhaul than before due to wrong lifter settings.
Cheers,
Eddie B.

tin can y'all give me all those specs, if yous read my in a higher place mail service ive tried to find them with non much luck, seems like theres a dissimilar answer wherever i look.... cheers, i appreciate the help !

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1 year 2 months ago #224767 by edb

Hullo,
looks like you posted that ane while I was typing my answer so missed it.
Valve lash for both Inlet and Frazzle is 0.010" hot--adjust to around 0.012" initially cold seems to work and recheck when hot.
Also cheque the Inlet valve decompression system has clearance and so to be sure it is not holding the inlet valve off its seat--this clearance to the cutout on the decompression rod is about 0.125" ---this clearance is non adaptable and is a upshot of that all inlet valve train components are every bit per manufacturing plant specs. this clearance may exist establish to exist reduced unremarkably when the inlet valve has recessed into the head --some clearance is required.

Lifter setting is i.736" measured from top surface of the injection pump housing to the lifter yoke pad. This is done with the relevant piston at Top Dead center compression stroke---if you go by TDC plough the engine dorsum at least 60 Degrees and come up to TDC again so equally to remove any slack in the timing gear train.
TDC marks and pointer are on the forepart face of the flywheel every bit viewed thru the opening under a 2 bolt cover on the front right face of the flywheel housing--exist aware the stamped marks will be hard to detect as they will exist covered by and filled by crud on the flywheel face.
Hope this helps.

Cheers,
Eddie B.

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1 year ii months agone #224779 past Ray54

Before things go sideways, is the 318 engine one of the ones that the flywheel tin get out of sink with the marks? Or is it tardily enough that the flywheel only goes on the one way. With all the late model updates this could well be a machine that has had a lot of work done to it over time. This increases the chance of the flywheel having been off.

You don't say which 3 are non firing. But by run a risk is information technology the front 3? That would bespeak linkage trouble with the compression release mechanism. Because the valve comprehend is 2 pieces and I don't remember how it all connects together. But if the valves are held open up that would explain your problem. Just a random idea that would be easy to check. Simply I fear with the poorer quality of "new" diesel fuel, fuel problems will become more common.

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ane yr two months ago - one year two months ago #224780 by edb

Hi Team,
yes, the D318 is as well 1 of the engines that tin have the flywheel out of sync with the crank--there are Manufacturing plant chisel marks on both the flywheel and the creepo that need to exist aligned at assembly.
If the flywheel is out of sync then y'all need to establish your own TDC positions for the 3 required positions of crankshaft TDC--ie-- 1&6, 3&4, 2&v. or remove and refit the flywheel in the right timed/sync position.
Cheers,
Eddie B.

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Last edit: 1 yr 2 months ago by edb.

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1 year 2 months agone #224788 past wimmera farmer

Another footling stumbling block at least on a 9U here. The same flywheel is used for a 4 cylinder and a half-dozen cylinder engine and has dual set of timing marks that are confusing when first come up across. thank you WF

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