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D8H to get going

J

Jim McVay

Member
Got asked to get a cat D8H going. Was donated to Florida
flywheelers in fort Meade Fl. It's a 46a 15xxx machine. No
historty on it yet. Oil looks good in engine. Planned on putting
some hot batteries on it and getting her turning over first.
Then check out fuel. Change filters and bleed out. Is there a
compression release on it? Worked on a 1958 B/E with the
D342 that had a compression release. Any helpful
suggestions would be nice.
 
I take it that when you say batteries its a direct start,Cat's of that era usually came with a pony motor start,direct start was available as an optional,they both had decompression as it was the same engine,to prepare it for starting check to see all the fluids are ok including the coolant,on decompression with the throttle in the stop position crank the engine over till full oil pressure shows on the gauge,open the throttle,turn it to heat for 30 seconds,hit start and then go to full compression,if it starts run it for a few minutes so it puts some charge back in the batteries,now service the fuel system,reason for doing it this way is if you open the fuel system before you start the engine to change the filter/s etc and the engine fails to start because it has another issue the fuel system gets blamed when there is nothing wrong with it and it will kept getting bled and bled,whereby if its started first and it won't start after the fuel service you know that it is a fuel issue.
AJ
 
Yes it will be 24 volts,it may not have the lever for the decompression if it came 24v from factory I can't remember,I see so many machines of all makes,the ones that was converted from pony to direct start at my place we left the decompression lever in place,great machines those,what equipment is on it,CCU (cable control unit) blade cable or hydraulic,if you are new to this type of equipment there is a Caterpillar only site at the link below,you have to register to post its free and easy.
AJ
ACMOC
 
The 8 G's and H's were about the most popular ones out there for a long time.

That said it should be direct start, and won't have a compression release. The steering clutches will be the wet type, so them being stuck shouldn't be an issue.

Beyond that, it's a plain 'ole diesel, so it's not rocket science....LOL

Good luck.
 
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