My neighbor has a 941 Traxcavator and is wondering about injection pump timing. The service manual is very vague on this. Which one is the number 1 cylinder? Where should it be when the pump is installed? The mechanic says there are no marks on this engine. Serial number for engine is 80H319. How can it be timed without marks? Also same dozer - when the engine is installed, how do you align it with the rubber biscuits on the torque converter? Any help would be appreciated. Thanks.

I believe that still has the compact fuel housing & not the sleeve metering housing so the drive would be offset so you can,t get it on wrong then as it will only go one way. You have to eye up the two. the camshaft & the accessory drive in the front & slip it in. As for the # 1 pump it would be the front pump in the housing. As for your torque convertor I can,t just picture the setup as it,s been so many years since I worked on one since I retired from the dealer.

Fred, if you have an old D330 (4.5"bore with aluminium valve cover)there is a hex plug in flywheel housing with all TDC's marked. If you have the newer D330C then there should be a pipe plug in front of flywheel housing marked TDC#1 that you put a 3/8"NC bolt into the flywheel to find TDC#1. Have to look at valves to make sure #4 valves are rocking so you are on #1 not $ compression stroke. If you have had the engine all apart you need a timing fixture to set the drive shaft right. If you didn't have the timing gears all apart just put pump on the offset tang drive. Also with engine on TDC#1 the bolts should go into the ballancer shafts. If you had the front off and used the timing marks the ballancers will be good.
Now about engine alignment.
First make sure the engine mounts on the frame and on the flywheel have good mating surfaces. If not weld up and grind off flat.
Set engine in with all mounting bolts loose.
Take off flange from TC input shaft and clean up the flange on the engine, face and OD.
Mount a dial indicator on a bent piece of rod clamped to TC input shaft and spin it around the OD of engine flange.
Make sure the pointer is always in contact with flange. Write down the readings at 12:00, 3:00, 6:00 and 9:00 Oclock.
Install shims equal to 1/2 the difference between 12:00 and 6:00 Oclock on each rear mounting surface.
Shift the rear of engine side to side untill readings at 3:00 and 9:00 Oclock are equal.
Snug down the rear mounts and spin the dial again, if you have a max difference of 0.080" or less it will be okay but the closer to ZERO runnout the better.
Then run the dial around the rear surface of the engine flange.
Record readings as before.
Install shims equal to 3 times the difference of readings at 12:00 and 6:00 Oclock at each front mount.
Shift the front of the engine side to side untill the readings at 3:00 and 9:00 Oclock are equal.
Snug down front bolts and recheck,if the difference in readings are less than 0.026" you are okay.
Tighten all engine bolts down and recheck both readings. If with in spec great but if not readjust.
This is important or the biscuits will rip out fast.
Later Bob

Hi farmerfred,
Bob has described the alignment proceedure beautifully, the major problem with miss alignment, as well as cutting out the biscuits, results in a broken crankshaft, have seen several over the years in these and 955K's.
Cheers,
Eddie B.