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About davidrmodel

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    1976 Mack R685ST
  1. I have to tow an old semi trailer approx. 150 miles. Its wheel bearings are packed with grease. The grease is old and hard. Trailer has been off the road for 10+ years. I want to put some fresh grease in the wheel bearings before hitting the road, to reduce chances of problems en route. What shall I do that can be done without too much fuss? Thanks!
  2. Hello-- I need to replace the kingpins on my 1980 R Model tractor (twin screw). I believe the front axle weight rating is 10,500 lbs. I have not done this job previously. Will someone give me the basic procedure, and any special tools needed? Is machine shop work needed? I may take this job to the shop if the procedure is beyond my means. Thanks!
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