I don't think a 1/2" impact is enough to properly tighten any tractor bolts.Ī track rail link as a "pin" on one end and a "bushing" on the other. If they loosen, they're easy enough to retighten. I usually stop one or two bangs past the stop of any noticeable rotation. As I recall I tightened using the 1" again set on #1 setting and maybe 90 psi. I had to use a 1" air impact wrench set on #4 to remove the pad bolts. Bolts had no signs of galling or twisting.Īgain Thanks.there is a wealth of info on this forum !!! Soon as the bolt "winked" or moved just a bit I stopped and went to another bolt. Lowered pressure on impact 80-90 and hammered a little at a time. By then the head of bolt not cherry red now. Then applied a small amount of heat to the side of frame. Then applied heat to the head of bolt, close to cherry red. Using a 1/2 inch drive impact set at 90-100 psi hammer them just to see if they would turn. I had read before I started that broken bolts were common. Just a bit of info on the roller change out. One more thing.can anyone tell me the torque values needed for the lower roller bolts and drive sprocket bolts? Just trying to get my 26 or so acres cleaned up. I would love to have a set of rails but my budget won't allow at this point. I noticed (on the idler) that the surface appears flat on each side but there is a metal lip that is rolled off the edge approx. What do I look for on the idler in front?
This because of wore out rollers and riding on top of something? As I said 2 rollers on each side there were no guts left in them. I noticed on the pin "boss" (side of link) of track links some wear is there. Have been replacing several loose bolts on track pads with new ones also. My thought was to change all 12 rollers on bottom and sprocket. I know that the worn track will wear the sprocket faster and vice versa but do you think I can get 4-500 hrs of life? What about lower rollers? Does the fact that I will eventually have all new lower rollers on a used chain affect anything adversely? Thank you everyone in advance !!! I purchased the dozer for 14,000 ( probably to much?) thinking I could do some minor repairs then use for brush clearing on 26 acres of cutover(machine has a large root rake attached to blade). I do not want to change or "turn bushings" on rails because of cost and what I am doing with dozer. My question is if I change all the bottom rollers and the drive sprockets can I realistically get 4-500 hrs out of the machine undercarriage? The track/rail shows signs of wear but the bushings are not wore through. The ones on machine are sharp on the tips but no apparent "cup" wore into one side of the tooth. So far I have changed 4 rollers, 2 on each side. 3 bottom rollers bearings were gone.as in roller flopping on shaft.
I knew before purchase that it needed some undercarriage work. Recently I purchased a 1998 450GLT with 4,040 hours. I have some knowledge of heavy equipment. I am new to track dozers but have ran pedestal mounted 120 Ton cranes for 30 years.
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