JDcrawlers Messageboard

Hi all, I was in bad need of drive sprockets last year to finish some work around farm. Chain was about wore out but elected to change sprockets being they were relatively cheap. Now I have decided to put a new chain/rails on and purchased new sprockets again from the advice of a rep of "Tracks N Te...

I needed to get the machine running for a project on the farm so I went ahead and changed all 12 rollers and the rear sprocket at this time. Have opereated about 20 hrs so far without any issues or bad noises. My plan is to change out the chain in a couple of months. I never did find a split link/ma...

Success ! I changed the rear sprockets without splitting the chain apart. I know it would have been easier but never did find a split link etc. I did not want to beat a pin out. I looked it over and figured I could get sprocket out with some creative rigging. First I released all the tension in both...

I changed all the lower rollers yesterday and now I am wanting to do the rear sprockets. So far I have all the slack I can get in the chains/rails. Worked the slack to the back. Have the chain supported on the top side with chain just off the teeth of sprocket. I have the machine blocked up. I can g...

Does anyone know the torque values to put on the roller bolts and track pad bolts ??

My thought was to change all 12 rollers on bottom and sprocket. Have been replacing several loose bolts on track pads with new ones also. I noticed on the pin "boss" (side of link) of track links some wear is there. This because of wore out rollers and riding on top of something?? As I said 2 roller...

Yes I understand, hate to really do it that way myself but wanted to keep cost down on repairs and just use the dozer. The rollers are 100 a piece and pair of sprockets were around 200. As far as the chain I really don't know how to tell what is considered wear and extreme wear on pins/bushings. I n...

I am new to track dozers but have ran pedestal mounted 120 Ton cranes for 30 years. I have some knowledge of heavy equipment. Recently I purchased a 1998 450GLT with 4,040 hours. I knew before purchase that it needed some undercarriage work. 3 bottom rollers bearings were gone...as in roller floppin...