2014年12月10日 · hi wbvs58 we have a d4d 49j direct drive crawler with which we have used for farming an dozing since about 1976 I think . because of its heavy workload it has always had Caltex 85/140 gear oil in its gearbox / backend (it has dry clutches/ brakes) and borate 460 in it's final drives , and engine oil in main clutch, and apart from 2 reraces in it's 20000+ hrs life never had a serious issue. can ...

2023年5月5日 · Redgum, a 91A D4D is a Japan-built D4D, built approximately 1966-1969 - and it is virtually identical to the U.S-built 78A D4D, the Australian-built 85A D4D, and the French-built 86A D4D. The Japanese-built Cats were built during a Joint Venture between Shin Caterpillar and Mitsubishi in a Mitsubishi factory in Japan.

2014年11月1日 · The main clutch on CAT's have a brake fitted to them that is made to function by pressing the clutch lever forward, the clutch linkage is also set with a G/Box interlock control, this locks the gear change when the clutch is engaged/pulled, the clutch should always be placed in the engaged position with the main G/Box placed in or out of gear as needed, the forward-reverse control should never ...

2014年5月16日 · Just purchased a Cat D4D dozer which the guy said was a 1984 year one but i have not got a clue if it is or not does anyone know,this is what i could find from the plate in the cab. On the first line going from left to right D4D 7R628 3A3290. On the second line again left to right 3304 48V5904 6A5543.

2015年6月8日 · Nige, D4D's you might want to re-think the scavenge pump thing as the converter and planet case is common, the trans pump bolts in under your right foot in front of the pressure filter, there is a gasket and 1 O'ring on the trans pump bolt up face, under the filter lid is the large filter O'ring and 2 other O'Rings with oil feed under pressure ...

2021年7月31日 · Hi All - whilst cutting and cleaning up roads on fairly steep terrain on my direct drive D4D it is very difficult to shift from F to R. It seems to be caused by load through the transmission. After finishing a push on a steep road cutting I often have to jack the front of the machine with the blade (or bunny hop a few times with the main clutch ...

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.

2012年10月29日 · Production of your model D4D tractor in 1968 was 83J00359 to 83J553. It has a 4.5" bore model D330 engine, and the transmission is the 3 speed, Cat planetary "powershift" transmission. This driveline contains a Cat "torque divider", with a transmission containing 5 multi-plate clutch packs mounted around planetary gearsets behind the torque ...

2020年8月20日 · Hello All, Thank you in advance for your advice! I recently started working on a farm that has a '68 Cat D4D (sn: 82J450) that had been sitting out in the field for quite a while. I fixed the fuel leaks and replaced the ignition system …

2024年7月8日 · Call your local dealer and ask him if they sell Cat TDTO oil. I would be amazed if they didn't. It's a Cat-branded equivalent to TO-4. Actually Cat "invented" TDTO first and then developed the TO-4 specification for commercial oil suppliers to …