Tractor Repair: Hard Starting Case 5250, hose clamps, series tractor
QuestionI have a Case 5250, 1994 with 3000 hrs that I'm having problems starting. I replaced the lift pump about a year ago and it solved the problem- now it's happening agian- so I susuped the lift pump and replaced it, but this time it didn't solve the problem. I seem to be losing the prime to the injection pump, if I manually pump the lift pump multiple times I can get the tractor to start. I suspect that it is sucking air and losing pressure when it is sitting idle. The obvious place to start is the fuel line from the pump to the tank, which is rubber crimped to steel. Is there a way to tell if this is where my problem lies? Futhermore if this is the problem, does the fuel tank need to be dropped to replace?
AnswerHello,
This is one of the most common problems on this series tractor. The fuel lines crack and deteriorate between the fuel tank and the lift pump, and air gets into the system. The only good way to replace the lines is to remove the tank because the lines fit into a channel that is molded into the side of the tank that faces the transmission. The part of the lines that run behind the tank in this channel is steel tubing. If you don't want to remove the tank to replace the whole line, you can cheat by cutting off the steel line where it is crimped to the rubber, and replacing the rubber part with new rubber fuel hose and hose clamps. There is also rubber hose where the lines attach to the top of the tank at the gauge sending unit. To replace those, you can remove the seat and work through the hole in the floor. There's not much room to work under there, but it can be done. If the wheels are not narrowed way up, the tank can be removed easily. If the wheels are too narrow, then the left wheel would have to be removed. Also check the fuel return lines from the injectors. I have seen a leak there allow the fuel to drain back to the tank after the tractor has not been used for a couple of days.
Arnie
