2008年11月5日 · The D4D 78A series was produced from 1963-1968. The D330 engine is ok but not great. There were a lot of production changes done throughout the series so the higher the serial number the better.

2025年1月7日 · Full dimensions and tracks ... Serial number plate on the rear of the tractor, upper-left of the transmission case. FAQ: How to read a serial number table. TractorData is a family-owned small business located in Minnesota that has been providing reference information on tractors since 1999.

The Caterpillar D4 track-type tractor is a small bulldozer manufactured by Caterpillar Inc. Caterpillar first introduced the RD4 in 1936, [ 1 ] as the diesel follow on to the successful CAT 30 gas model.

The D4C (models 39A, 40A) and D4D (78A, 22C, 82J, 83J and others) steering clutches went through a small design difference from the earlier D4 4G, 7J, 2T, 5T, and 6U/7U series. The early D4's originally used the riveted on lining style of friction discs and progressed to …

2023年12月31日 · THIS IS A CAT LUBRICATION AND MAINTENANCE MANUAL FOR DOZERS D4 DOZERS GOOD FOR MANY, GOOD CONDITION, LOTS OF INFORMATION!

2024年10月8日 · I aquired an old 78A D4D Caterpillar dozer that was about ready for the junkyard, that I have brought back to life. There are some numbers stamped below the serial plate on the engine. The serial plate itself reads 78A4087. My confusion comes from the fact that Carolina Cat says that Cat says this serial number never existed.

I am still hoping someone has a good used exhaust manifold for a D4 78A, D330 engine. Original cat part #9H4031 is still a good number.

This CAT Caterpillar BULLDOZER OPERATION MAINTENANCE MANUAL D4 78A 86A Book Service is a great addition to your collection of manuals and books. It covers the operation and maintenance of your Caterpillar Bulldozer, including the D4 78A 86A models.

2020年4月6日 · I have a d4d 78a dozer, and have found a midland m86 8yd dirt pan locally. I would like to use the dozer to pull the pan, but I have no auxiliary hydraulics to operate it, and the machine doesn't have hydraulic tilt.

:eek: D4 78A HELP!!!!! I need to find a bull gear or final drive about what is the cost and does anyone have one??? Transmissione Sir # is 4K5035...