Have a customer that has a D6C 76a Dozer, Engine number (7M4400) and housing number (5m7844). He bought the dozer with no starter in it as the previous owners were still working on it. Need help finding the correct PN for starter as he has had no luck with multiple starters, serial number for dozer is also very worn, trying to find a frame stamp as well. Know any serial number locations so i can find out the year of this dozer? Thanks
Hi Andrew - The number 7M4400 is just the part number for the D333 engine block, and the number 5M7844 is the part number for the cast housing ("cover") that contains the torque converter (torque divider). The tractor Serial Number on the aluminium tag is the important number. It is located on the centre upper left of the engine block behind the filters, and on the RHS lower part of the dash, just above the floorplates, and on upper rear (vertical face) of the steering clutch housing (can't recall if it's on the L or R now). However the ali tag on the rear of the steering clutch housing may be gone. There may be a serial number stamped into the metal of the S-C housing. Regardless, the starter is easily found and a universal fit, it fits a multitude of models and brands (even Komatsu and Cummins!). It is a Delco-Remy model 50MT, 24V, CW rotation, 12 tooth pinion, and with an inbuilt pinion seal (this is known as a "wet" starter, to seal the starter internals from oil in clutch/converter housings). Rare Electrical can supply a Chinese/Taiwanese "knockoff" of the Delco Remy, because as far as D-R are concerned, this type of starter is totally obsolete, and they give them little support. D-R want you to buy a Planetary Gear Reduction (PGR) starter, as this is the current technology. You can buy a PGR replacement starter if you desire, but it will cost more than a D-R copy of the MT50 from Rare Electrical. https://www.rareelectrical.com/i-26...ack-tractor-d5-d5b-d6c-d6d-4n3313-6s9207.html I uploaded your photo of the S/N tag and played with it in my photo imaging program, trying to bring out the original numbers using contrast - and I would hazard a guess the S/N is 76A3063. There were only a total of 6061, 76A model D6C's built between 1963 and 1967 - here are the years and S/No's of production. 1963 - 76A0001 - 1117 1964 - 76A1118 - 2106 1965 - 76A2107 - 3593 1966 - 76A3594 - 5040 1967 - 76A5041 - 6061
Thank you so much! I appreciate your time, you helped me out more than you know. This customer has thousands into getting this thing running
Is the starter being saute after a replacement/conversion of an original "Buzz Bomb" pony motor? If so it's a bit of an odd ball. Requires the 9M1817 Cat adapter plus a "LH helical" starter drive. The adapter is required because the pony nose is to large for the normal Delco Drive end housing. Finding the LH helical drive can be a bit of a challenge. The original starter (straight tooth drive) would have been a 40MT although a 42MT or the larger 50MT will also work.
Mounted up the MT50 starter, bolt holes are off by 1/8 in. The opening of the starter gear is on the wrong side as well so the solenoid would be on the bottom and not the top how it shows in the service manual.
Should I unbolt the top housing of the starter and rotate it? Looks like there are Allen's and Different screw holes for adjustment
Looks like your missing the 9M1817 adapter plate that is required to mount the starter. Index the drive end housing to whatever position you wish. Does your flywheel have straight teeth or are they beveled?
The flywheel has straight teeth
#6 on the attached illustration.
That adapter is a must. It offsets the starter in the housing hole which is bigger than the normal opening plus matches the mounting holes. Forgot: The adapter also controls the correct pinion engagement depth.
Ahhh I see, acts like a shim and adapter. I appreciate the knowledge sir thank you very much
Oz and OldMagnet, I have the same machine, D6C 76A. Pony has been removed and dozer has a 24v starter currently. I would like to however, find a gear reduction starter for it. It has the adapter plate obviously. Reading the comments above, I was unclear about the “left hand helix” comment. Any idea if a PGR is available for this replacement? Thank you, Dustin
I don't believe anyone is producing a LH Helical drive gear for a gear reduction starter for this application.
Thank you for the insight, sir.
Reading through your comments above again. Is the LH helical drive still a MT50 starter? (with a diff gear obviously). My starter seems weak, if I purchase a new MT50 for example, can I have a starter shop swap the helical drive gear?
Same starter drive for 40, 42, 50MT starter.