JDcrawlers Messageboard

Yes that ser# would put yours as an early to mid 1976 model. Here is a post that I have found helpful in determining year models on the 450 series. http://www.jdcrawlers.com/messageboard/viewtopic.php?t=2415 I have an 1981 450c dozer that came with the common sump bet the plugs were able to be remov...

Hi D Jack, The answer to your question will depend on the ser# of your machine and the year it was built and/or if it was converted after it was built. The early model 450c’s were produced with a separate reservoir and a lot of them were converted to a common sump. I have never gotten a clear unders...

Ok, do you have the service manual for that dozer? It should be TM1102. If so have you been through the adjustment procedure in the exact order as described in the manual. Also I would get a pressure gauge setup and check/monitor the pressures while moving the the reverser lever from high, low, neut...

You say you have changed the filter. I assume that you are referring to the filter that is located in front of the radiator? Have you also checked the screen/filter located at the bottom of the transmission? This filter is often overlooked and can be clogged with debris from worn clutch plates which...