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no hydraulics, wont start after being shut off, lights

 
HeavyEquipmentTech's Avatar
  • Answered by:HeavyEquipmentTech
  • Technician
  • Positive Feedback: 92.1 %
  • Accepted Answers: 487
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Customer Question

My 301.8 stopped traveling, no hydraulics, won't start after being shut off, lights, etc still work. What could be the problem?

 

Optional Information:
Make: Caterpillar
Model: 301.8
Year: 2004
Engine: Perkins

Already Tried:
Nothing

Submitted: 345 days and 3 hours ago.
Category: Heavy Equipment
Value: CA$48
Status: CLOSED

Accepted Answer

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Expert:  HeavyEquipmentTech replied 345 days ago.


HeavyEquipmentTech :

Hi my name is XXX. X will try to help Could you give more details and a summary on your problem and the symptoms so I can better assist you? Wont start?Will it crank over with the starter? Can you hear the hydraulics trying to work or any signs of hoses being pressurized etc??

Customer :

Here is the info I was given from my operator;As I was walking the Cat up the road to the main road, about half ways up the hill, the hydraulics just stopped right in the middle while it was still walking.....I had nothing, no bucket, no track...nothing. The motor was still working good so I tried what I could with the hydraulics and still nothing. I decided to shut it off thinking maybe the lift armrest that freezes the hydraulics might need for some reason to be reset. So I tried that, then the motor wouldn't start, all the lights worked, head lights, oil light, charge lights.........even the glow plug, but no starter. There's a reset button in at the motor, a main breaker, looks like a 60 amp in the dark anyways. That was fine too.

Customer :

If you have more questions, I can ask my operator and get back to you. I am a couple hundred miles from his site.

HeavyEquipmentTech :

First check all your fuses, check all your oil levels and your filter and oil for metal/debris that would indicate an internal mechanical failure. Check for power using a test light at the small wire going into the starter solenoid while trying to crank over. I so and the starter wont crank, replace the starter if all connections between your batteries and starter are good, theres a full 12v to the starter and it has power at the "s" terminal while trying to crank. Check all your wiring for loose. corroded, broken connections. Check all your safety switches it could be possible the pilot shut off switch at the armrest has worn out. Let me know if you need further assistance. thanks for using JA

Customer :

My operator just emailed me, says he changed out a fuse and all is well now. However, he mentioned s "butter churn" type item on the fuse door, any idea what that would be for? I'll accept your answer even though we identified the initial problem

Expert TypeTechnician
Category: Heavy Equipment
Pos. Feedback: 92.1 %
Accepts: 487
Answered: 5/3/2012

Experience: 1995 Wyo-tech graduate 17+years shop/field experience/on all major brands of heavy equipment and trucks.

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