Posted by cushman on December 21, 2013 at 13:27:13 from (71.48.70.182):
About 30 years ago I installed an RG6466A Deere engine in an IHC TD20C dozer for a customer to replace a tired, and very expensive to rebuild ,DVT573.He was very happy with the repower until 2 years ago when it would no longer start at 10degrees F without aid.It now needs to be 40 to start with no aid .I pulled the injectors,which pop at 3800psi and have a good 6 hole spray pattern. While the injectors were out I checked the compression,in a 50degree shop,and it ranged from 395 to 440.The charge pressure going into the pump is 16 psi.Can anything in the pump,with only 4100 hours,cause it to start like that ?The service manual does not go into pump symptoms.
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Today's Featured Article - Oil Bath Air Filters - by Chris Pratt. Some of us grew up thinking that an air filter was a paper thing that allowed air to pass while trapping dirt particles of a particles of a certain size. What a surprise to open up your first old tractor's air filter case and find a can that appears to be filled with the scrap metal swept from around a machine shop metal lathe. To top that off, you have a cup with oil in it ("why would you want to lubricate your carburetor?"). On closer examination (and some reading in a AC D-14 service manual), I found out that this is a pretty ingenious method of cleaning the air in the tractor's intake tract.
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