ferrret3238
Active Member
First time poster, long time reader. I have a 966 b caterpillar end loader from 1964 I believe. The original engine blew and it was replaced with a d333 from a motor grader. The d333 is a small bore 4.5 inch with a block number of 7M4400 and a crank number of 8M4502. The motor grader d333 has spun a bearing and is already ground 20-20 so the crank is junk. I have been looking for a 8M4502 crank, which is a 5.5" stroke instead of all I have called on that are a 6.0" stroke. Seems this is a gray area that some 8M4502's are listed as a 6.0" stroke. It also needs new liners, pistons, and a gasket kit. It has been a nightmare trying to find decent useable parts for this old of a motor. I was wondering if the back end of the D333 that bolts to the bellhousing is the same as a 3306? I have to use my bellhousing because that's the way they drive the hydraulic pump. I can make hoses and tubes to reroute the oil, water and air lines but I can't change the location of the hydraulic pump driven from the bellhousing gears. I have a lead on a 3306 PC #23C02271 for $1000 but needs a little tweaking I think and it would be easier to get 3306 parts. Hopefully somebody has been through this before and can shed some light on my situation.