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here we go....i think the pony finally went kaput

here we go....i think the pony finally went kaput

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Hillbillybjopkr
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hey guys....I know its been awhile...been busy lol...the D4 has been doing pretty good until now....went to start it yesterday...and the pony started runnin odd...it was flat dumping gas into the cylinders....pulled the carb off...went through it..again....put it back on....and couldn't get it to hardly turn over...electric start cant turn it over period....I grabbed the flywheel and it was just about all I could do to turn it over by hand....feels really really tight...so knowing a rebuild is in my immediate future.....were is the best place to get a rebuild kit....local CAT partshouse is quoting about $600....am hopeing you fine gentlemen might have a line on something cheaper....if everything goes right today....i'll know what I need parts wise later this afternoon....wish me luck
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Sun, Oct 1, 2017 11:33 PM
Dozerman51
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Call Florin tractor parts in Sacramento,CA. They should be a lot cheaper than going to Cat. Did you open both petcocks to get the excess gas out of the cylinders? Hope you have changed the oil in the pony before trying to restart it. Sounds like a bearing and or ring failure.
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Mon, Oct 2, 2017 1:52 AM
Hillbillybjopkr
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Reply to Dozerman51:
Call Florin tractor parts in Sacramento,CA. They should be a lot cheaper than going to Cat. Did you open both petcocks to get the excess gas out of the cylinders? Hope you have changed the oil in the pony before trying to restart it. Sounds like a bearing and or ring failure.
turns out I got lucky.....hung up starter......I did change the oil....yesterday when I drained it it seemed thin and smelled gassy....I typically run 30w in it but refilled with 10-40.... been noticing a lot of blowby....blowing dipstick out the tube....and a little bit of oil burning out the exhaust....if I can get her to start this afternoon....im gonna move her closer to the shop...im thinking the pony is gonna need a rebuild anyways so should be a nice "wet weather project".....gonne be that way here I think for the next 9 months lol
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Mon, Oct 2, 2017 2:53 AM
oldbeek
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Reply to Hillbillybjopkr:
turns out I got lucky.....hung up starter......I did change the oil....yesterday when I drained it it seemed thin and smelled gassy....I typically run 30w in it but refilled with 10-40.... been noticing a lot of blowby....blowing dipstick out the tube....and a little bit of oil burning out the exhaust....if I can get her to start this afternoon....im gonna move her closer to the shop...im thinking the pony is gonna need a rebuild anyways so should be a nice "wet weather project".....gonne be that way here I think for the next 9 months lol
After working on small carbs, I fill the fuel bowl and blow air down into the throat from the top with an air nozzle. Should get nice atomization out the bottom. It is subjective but a quick test without installing it. Kind of a home grown flow bench. Careful,, no flame or ignition source nearby or you have a flame thrower.

On blow by,, my dip stick bounces up and down. Take the cap off the oil fill pipe and it sprays like a volcano. AND that is on a tight engine.
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Mon, Oct 2, 2017 11:43 AM
Paso Bob
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Reply to oldbeek:
After working on small carbs, I fill the fuel bowl and blow air down into the throat from the top with an air nozzle. Should get nice atomization out the bottom. It is subjective but a quick test without installing it. Kind of a home grown flow bench. Careful,, no flame or ignition source nearby or you have a flame thrower.

On blow by,, my dip stick bounces up and down. Take the cap off the oil fill pipe and it sprays like a volcano. AND that is on a tight engine.
I would let some time go by and use that pony for a while before thinking of a rebuild. Unless they actually blow up, they are hard to kill. Like many have said on this BB previously, even with low compression, they will still do the job.
D-4 7U-43159 with 4S dozer and Cat 40 scraper, D-7 3T-1179 with Cat 7S hydraulic dozer, D-7 17A 13,944, D-8 14A-1160 with Cat 8S cable dozer, Cat 12-99E-4433 Grader. All runners and users.
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Mon, Oct 2, 2017 12:02 PM
8C 361
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Reply to Paso Bob:
I would let some time go by and use that pony for a while before thinking of a rebuild. Unless they actually blow up, they are hard to kill. Like many have said on this BB previously, even with low compression, they will still do the job.


Drain that 10-30 and put some 30W in there....she will be good as new.
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Mon, Oct 2, 2017 7:44 PM
Paso Bob
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Reply to Paso Bob:
I would let some time go by and use that pony for a while before thinking of a rebuild. Unless they actually blow up, they are hard to kill. Like many have said on this BB previously, even with low compression, they will still do the job.



Thinking way back, I had a D-4 2T in the 80's that the pony engine took a quart of oil every time I started it. The bearing was loose and the crank had a lot of endplay, It never did blow up and when I found a newly rebuilt one for $400, changed them out.
D-4 7U-43159 with 4S dozer and Cat 40 scraper, D-7 3T-1179 with Cat 7S hydraulic dozer, D-7 17A 13,944, D-8 14A-1160 with Cat 8S cable dozer, Cat 12-99E-4433 Grader. All runners and users.
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Tue, Oct 3, 2017 9:07 AM
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