Joined the club with an 18,000lb paperweight this week.

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snowtrac nome

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If your system sucks in air within a few hours after shutting down the engine the leak is in the suction side of the injectors if you find it sucks air over night the leak is in the return hose. I know this sounds stupid but I got the info from a bus mechanic while trying to find my leak I had replaced everything in my suction side , than replaced the return line it fixed it.
 

themeec

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Location
Boise, ID
Lines appear to be in great shape, so we're good there. Got some professional help from a Cat mechanic, and he noticed right away the primer assembly wasn't working properly (nothing like experience, whoulda thunk), so looks that's the source of the fuel bottleneck in the system.

However, after monkeying with the fuses on my end, checking to make sure nothings blown and voltage is all good, it seems that the start button won't crank the engine anymore.

This begs the question: Since the fuse panel was the last thing I touched, I'm guessing it's something there. Is there a trick to reseating the fuses, or something I might have toggled on/off on accident while digging around in there?
 

coachgeo

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North of Cincy OH
...However, after monkeying with the fuses on my end, checking to make sure nothings blown and voltage is all good, it seems that the start button won't crank the engine anymore.

This begs the question: Since the fuse panel was the last thing I touched, I'm guessing it's something there. Is there a trick to reseating the fuses, or something I might have toggled on/off on accident while digging around in there?
if you pushed the start defeat/inhibit button.... then it wont start till you turn off the power switch for a second or two... before turning it back on. This cancels the defeat/inhibit switch.
 

themeec

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Boise, ID
if you pushed the start defeat/inhibit button.... then it wont start till you turn off the power switch for a second or two... before turning it back on. This cancels the defeat/inhibit switch.
Yeah, I hit it and flicked the master power a few times to see if it was resetting properly. I left the master power off for quite a while, and it still didn't flicker when I tried to start it again. Is there a test to ensure the inhibit switch is operating correctly?
 

themeec

Member
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Location
Boise, ID
Went back out to the yard today to double-check for any loose breakers/fuses. Nothing too unusual, the covers came off of some of them when trying to pull them out, but they appeared to be good. Tried cycling the master power/start inhibit to see if I could hear any issues. Seemed to click on/off normally.
IMG_2637.jpgIMG_2639.jpg

Now, correct me if I'm wrong, but the Start Inhibit is only supposed to prevent the motor from starting ... not disabling the starter entirely, right?

For another dumb question, this thing doesn't need any air to start either, correct? I only ask because the thing is completely out of air from sitting by now. In addition to that, a misread of the diagram in the TM, initially inspired me to remove this component when hunting for the fuel solenoid. Unsure what it does, so perhaps an improper reinstall might have affected something?
IMG_2623.jpg

Just pointing out everything I can, since I find it incredibly suspicious that the starter suddenly won't turn after all this.
 

Asymair95

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Location
Hudson Valley NY
Start inhibit just prevents the fuel s/o valve from opening

no air is required to start

you need to change all the relays out with new, as well as replace cb’s with standard auto fuses
 

themeec

Member
38
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8
Location
Boise, ID
Start inhibit just prevents the fuel s/o valve from opening
no air is required to start
you need to change all the relays out with new, as well as replace cb’s with standard auto fuses
Figured as much on the inhib and air issue. Thanks for the confirmation.

Makes sense on swapping out all the old relays. Got a link to the kind of auto fuse I should be looking for, or any old 24 volt (or 12 as required) will do?
 

themeec

Member
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8
Location
Boise, ID
So, overdue for an update here. Did a bit more digging, but work at my job was starting to pick up, so decided that since I'd pinpointed most of the trouble spots, I'd turn it over to the pros, since time was scarce on my end. A spa day to the diesel shop down the road yielded quick results. Corroded starter solenoid, a few bits of rubbery diesel gunk that escaped my cleaning efforts, and she was in order right away.

InkedIMG_2642_LI.jpg

Had them give the air system a thorough inspection, which something I planned on doing anyway for safety's sake, and everything came out aces. Plates, title, registration, and insurance all handled shortly after easy as you please (hell yeah Idaho), and everything's in order.

IMG_2655.JPG

... and with that, gents ... I got the disease. Even my dog approves.

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