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My 2.5ton mini tracked Pel Job digger just will not start. After ignition and the relays click in for the fuel pump and the pre-ignition she turns over but just will not fire up. Previously she was always a good starter and I never needed EasyStart products. I have replaced the Stop solenoid still nothing. As a last resort I put on a new battery, sprayed EasyStart into the air intake and turned her over - nothing. I am now at the end of my experience, anyone can help me I would be overjoyed. Thanbks barry

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Posted on Jan 02, 2017

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SOURCE: Set won't turn on, timer light flashing and relay clicking

From what your describing the convergence amps, one or both, have probably failed and opened in the convergence circuit. That unit takes two STK392-040 amps and the feed resistors to those amps should be tested as well for any change in value.
For a shop this is a routeen job, we see them every day. But for a layman to tackle it - it could be the repair from hell.
The STK392-040 is both heat and static sensitive, so your $19.95 radio shack special soldering gun could ruin them in a blink of an eye.
They're mounted on the board against a large aluminum heat sink on the signal side of the chassis with heat sink compound and they're a multi-pin IC so they're not that easy to take apart and put in. Lining up all the pins to drop exactly where they're suppose to is a trickey task even for a technician, but then we have a few tricks that experience has taught well...
Call around and ask the shops what they charge for changing-out the convergence amps and testing the feed resistors in that circuit.. I would suggest taking the unit to them and save whatever they charge for a pickup and delivery.
Hope this helps!

Posted on Nov 11, 2007

  • 235 Answers

SOURCE: how do i replace a track seal in my mini digger.

Slack off the track adjuster valve, spin the track off and pull out the idler assy. The seal is on the end of the chrome  piston just pull it out .

Posted on Dec 31, 2009

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Fuse and relay for the fuel pump

The fuel-pump relay unit is responsible for turning the fuel pump on when it detects the engine is running. When the ignition signal stops, the fuel-pump relay switches the pump off. Problems with the ignition and starting the vehicle often can be traced to the condition of the fuel-pump relay.


  • The fuel-pump relay is a small unit, typically enclosed in a plastic case. The unit contains several sprockets on one side that are clipped onto the ignition system. The fuel-pump relay is engaged only during the start cycle. If it is faulty, it can take longer to start your vehicle.
  • Location
  • Most fuel-pump relay units are located under the dashboard near the steering column. In some cases, the unit is located in the area where the steering column is mounted or near the engine's firewall. The end of the fuel pump relay is typically located near the center of the floorboard, under the carpet in the front section of the passenger's or driver's side footwell.
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  • In addition to difficulty in starting the vehicle, symptoms of a poorly functioning fuel-pump relay include the following: the car dies then starts a few minutes later; the fuel pump makes a strange noise (humming or clicking loudly) for longer than five to 10 seconds after starting; or the engine won't start after you have engaged the fuel-pump switch.
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  • When your car does not start properly, you can conduct a fuel-injection relay test. Two relays are located inside the fuel-injection system; one of them is responsible for turning the ignition on without turning over the engine, and the other is responsible for turning on when the engine turns.

    You can check to see if the first relay is working by touching it while turning the ignition on and off. You should feel a "click" every time you switch the ignition. If the fuel-pump relay is not working, you can "jump" the unit with a small lead jumper cable. You will need to access the fuse panel and insert the cable into the relay unit; the unit will run as long as the wire is inside the relay and can help start your car.
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