eastroad
Well-Known Member
CAT 268B s/n LBA01125
Came in with hydraulic line rusted and leaking -boom down circuit. Corroded probably by battery acid as it leaked right above the battery. Just the one line was corroded and the owner elected to replace it rather than repair it by brazing.
I do not have access to a service manual; jUst a parts manual and the operator’s manual.
Things are a little tight, to put it mildly; I had to unhook both ends of the work tool lines, and to pull them forward I also had to move a couple more lines at the control valve. I didn’t have to do anything with the wiring except to unplug connectors in order to move the harness out of the way to remove and replace the steel tube, but I still managed to get myself in trouble anyway.
I went to fire it up this morning to check for leaks before bolting the cab down, and found that we had a starter circuit problem. The starter engaged as soon as the key was turned to the run position and it stops cranking if the key is turned to start.... I can’t find anyplace the harness is damaged, and I did pay attention to the harness plugs to make sure connector shape, pin count and wire colors matched. If I unplug the starter relay, the starter will not engage, as you would expect. The same for the 12? Pin harness connector in the harness above the hydraulic tank leading to into the cab. I have no apparent damaged pins in the multi-pin connector in the cab harness but that appears to be the easiest place for me to have created a problem. really need a schematic of the start circuit at a minimum, but one for the whole machine would be better. I would be really grateful if someone could scan and e-mail a wiring schematic. E-Mail is oliverdurand@comcast.net.
Came in with hydraulic line rusted and leaking -boom down circuit. Corroded probably by battery acid as it leaked right above the battery. Just the one line was corroded and the owner elected to replace it rather than repair it by brazing.
I do not have access to a service manual; jUst a parts manual and the operator’s manual.
Things are a little tight, to put it mildly; I had to unhook both ends of the work tool lines, and to pull them forward I also had to move a couple more lines at the control valve. I didn’t have to do anything with the wiring except to unplug connectors in order to move the harness out of the way to remove and replace the steel tube, but I still managed to get myself in trouble anyway.
I went to fire it up this morning to check for leaks before bolting the cab down, and found that we had a starter circuit problem. The starter engaged as soon as the key was turned to the run position and it stops cranking if the key is turned to start.... I can’t find anyplace the harness is damaged, and I did pay attention to the harness plugs to make sure connector shape, pin count and wire colors matched. If I unplug the starter relay, the starter will not engage, as you would expect. The same for the 12? Pin harness connector in the harness above the hydraulic tank leading to into the cab. I have no apparent damaged pins in the multi-pin connector in the cab harness but that appears to be the easiest place for me to have created a problem. really need a schematic of the start circuit at a minimum, but one for the whole machine would be better. I would be really grateful if someone could scan and e-mail a wiring schematic. E-Mail is oliverdurand@comcast.net.
