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Komatsu pc200-5 rebuild time due to excessive blowby

davecampbell

Senior Member
Joined
Jan 20, 2012
Messages
348
Location
Oklahoma
I'm not finding engine serial number or model number. Any hints on where to look? My unit serial number is A70257 Also, can I use aftermarket parts to save costs? Are there any to steer clear of?20200402_162702.jpg 20200402_162820.jpg
 

Tones

Senior Member
Joined
Mar 15, 2009
Messages
3,059
Location
Ubique
Occupation
Ex land clearing contractor, part-time retired
After market parts from China. Your digger could get a virus and be locked for years
 

John C.

Senior Member
Joined
Jun 11, 2007
Messages
12,865
Location
Northwest
Occupation
Machinery & Equipment Appraiser
It is a S6D95. Very common engine for Komatsu. It shouldn't be hard to source parts but I would check with Martin in their used parts division up in Missoula, Mt. before spending time all over the internet. He got me a couple of WA600 pumps for about half price of Komatsu factory parts. His number is 406 523-1121.
 

John C.

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Joined
Jun 11, 2007
Messages
12,865
Location
Northwest
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Machinery & Equipment Appraiser
I didn't find them to be any different in tolerances that any other engine. I've done all kinds of work on the 95, 108, 125, 140 and 170 engines in the field and in the shop from minor repairs to major bare block rebuilds. I found them to be easier to work on than any Cummins engine of the same size.
 

dozr

Senior Member
Joined
Dec 15, 2013
Messages
272
Location
alabama
Occupation
excaving
that is good to know i have one with 11000 hrs like daves thank you.
 

dozr

Senior Member
Joined
Dec 15, 2013
Messages
272
Location
alabama
Occupation
excaving
John C would you use this kit not knowing company or anything but price. thank you
 

John C.

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Joined
Jun 11, 2007
Messages
12,865
Location
Northwest
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Machinery & Equipment Appraiser
I'm not sure that I would but it depends on the situation. How old is the machine? What is the condition of the rest of the machine? What do you plan to do with the entire machine for the foreseeable future. What is your financial situation?

I have used aftermarket parts in the past and had both good and bad luck. When using someone other that the manufacturer for replacement parts, I tend to spend a lot more time measuring and checking the fit as they go into the base component. Some things I don't take chances on without some pretty iron clad paper to go with it. Long and short blocks, build up crankshafts, sprayed cam shafts and some of the rest of the hokey stuff that owner's being cheap will try.
 

dozr

Senior Member
Joined
Dec 15, 2013
Messages
272
Location
alabama
Occupation
excaving
i had a man that worked for a dealer say he saw one melt pistons around rings the pistons must not been heat treaded. that would be a bad day. i have allways liked to use best parts because after all they are man made at best.
 

davecampbell

Senior Member
Joined
Jan 20, 2012
Messages
348
Location
Oklahoma
I was sure pleased with how easy this machine is to work on. Every wire harness had a plug, and I didn't have to use a swivel socket all day. I'm confused by the piston marking. All except #4 say S Std . 4 says L Std. Can anyone educate me on that?20200411_160738.jpg
 

davecampbell

Senior Member
Joined
Jan 20, 2012
Messages
348
Location
Oklahoma
I had a bit of a struggle pulling front hub off. Even if I had known this cone was in there I would not have had the correct tool to pull it. 20200420_190334.jpg 20200420_190334.jpg
 
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