Justice1840
Active Member
I recently purchased this 1840 with the engine locked up (water in base pan)
Machine sat more than it was used. Reading 249 hours. It was in good shape other than engine. Seller said that everything worked as it should when parked.
When I got machine home i pulled cab, engine, tandem pumps, all hoses. I left motors, sprockets and chains in place. Properly capped motors and chain boxes and completely cleaned and repainted machine, rebuilt engine (4-390). everything appeared to be fine with tandem pump, so cleaned and painted and installed
Got machine back together and runs great.
Problem is that it will move forward and reverse, but with no power either way or either side. the warmer it gets the worse it gets until it will not move. it will not steer at all. has more power in reverse than forward, but nothing to be happy about. it will only move if close to wide open throttle. i have 300psi charge pressure. no pressure at either port on pump to motors. did the drain test and no oil coming from motor drains. i pulled all of the valves (circuit relief, bypass, charge pressure) and they appear to be fine, but cant be sure. i would like to mention that one of the post i read said that it should be hard to turn the input shaft. i recall (when tandem pump was out) that it was easy to turn input shaft. my next step is to remove tandem pump and go through it, but seems like it could be a simple fix and would hate to go through all of that if not necessary. i also replaced 90% of the hoses and cleaned them well before installing.
Machine sat more than it was used. Reading 249 hours. It was in good shape other than engine. Seller said that everything worked as it should when parked.
When I got machine home i pulled cab, engine, tandem pumps, all hoses. I left motors, sprockets and chains in place. Properly capped motors and chain boxes and completely cleaned and repainted machine, rebuilt engine (4-390). everything appeared to be fine with tandem pump, so cleaned and painted and installed
Got machine back together and runs great.
Problem is that it will move forward and reverse, but with no power either way or either side. the warmer it gets the worse it gets until it will not move. it will not steer at all. has more power in reverse than forward, but nothing to be happy about. it will only move if close to wide open throttle. i have 300psi charge pressure. no pressure at either port on pump to motors. did the drain test and no oil coming from motor drains. i pulled all of the valves (circuit relief, bypass, charge pressure) and they appear to be fine, but cant be sure. i would like to mention that one of the post i read said that it should be hard to turn the input shaft. i recall (when tandem pump was out) that it was easy to turn input shaft. my next step is to remove tandem pump and go through it, but seems like it could be a simple fix and would hate to go through all of that if not necessary. i also replaced 90% of the hoses and cleaned them well before installing.