Old D5 New Owner
Active Member
Hey everyone,
Well while trying to bring the tractor back to the shop to work on welding a nut to remove those super warn final drive bolts I had an issue with the dozer that caused me to shut it off and now it won't shift into gear or move.
While moving I started hearing this thumping kind of sound so I shut it down. Upon restart I still get the thumping noise and it will not shift into gear. I removed all the floor plates and checked the magnetic screener and saw what I have to assume is a normal amount of metal in there, but there is still definitely the thumping kind of sound I hear coming from the torque converter/transmission area in between the flexible coupler and the planetary gears. The linkage will not shift into any gear, the spring just forces it back into neutral and forcing it into the gear selection doesn't make any kind of attempted engagement sounds. Could this be a bad pump? Bad torque converter?
I'm still very new to this dozer and prior owner swears he never had any powertrain issues (of course). Bevel case has plenty of oil in it and it doesn't look bad, no leaks anywhere as a result of this incident that I can see. I did note that the magnetic screener filter housing was completely empty when I opened it to check it out, but given where it is in the system, perhaps this is designed to drain after shutdown and should be empty upon opening after shutdown? Or does this perhaps indicate a lack of pump flow? Any ideas on what to try and self diagnose. I have a field mechanic that says he can get here in a few days, but I'd love to try and see what I can figure out myself before paying $100 an hour and a $150 trip charge to this guy in case it is something I may be able to look into myself. This is a powershift tranny by the way on a 67 D5.
Thanks everyone!
Well while trying to bring the tractor back to the shop to work on welding a nut to remove those super warn final drive bolts I had an issue with the dozer that caused me to shut it off and now it won't shift into gear or move.
While moving I started hearing this thumping kind of sound so I shut it down. Upon restart I still get the thumping noise and it will not shift into gear. I removed all the floor plates and checked the magnetic screener and saw what I have to assume is a normal amount of metal in there, but there is still definitely the thumping kind of sound I hear coming from the torque converter/transmission area in between the flexible coupler and the planetary gears. The linkage will not shift into any gear, the spring just forces it back into neutral and forcing it into the gear selection doesn't make any kind of attempted engagement sounds. Could this be a bad pump? Bad torque converter?
I'm still very new to this dozer and prior owner swears he never had any powertrain issues (of course). Bevel case has plenty of oil in it and it doesn't look bad, no leaks anywhere as a result of this incident that I can see. I did note that the magnetic screener filter housing was completely empty when I opened it to check it out, but given where it is in the system, perhaps this is designed to drain after shutdown and should be empty upon opening after shutdown? Or does this perhaps indicate a lack of pump flow? Any ideas on what to try and self diagnose. I have a field mechanic that says he can get here in a few days, but I'd love to try and see what I can figure out myself before paying $100 an hour and a $150 trip charge to this guy in case it is something I may be able to look into myself. This is a powershift tranny by the way on a 67 D5.
Thanks everyone!