Typical on the pc400lc-5 with the cummins engine.

@@arseniosanchez8686 -6 has problems with it too.

yeah i agree with everythinng patrick said ....im not as impressed with them but but looking into the gov phases and wiring and pot would be a good jumping point. ive worked on a few komatsu's and these govenor motors seem to be very temperamental combined sometimes with weird spring dampening linkage made from the highest grade of chinesium(went thought about 1-2 a year of oem komatsu gov linkage on the pc120lc6 i worked onif i rember right they had a revison to that part twice i think) . combine that with poor wiring harness routing(often routed as neer to pinchpoints as possible and as low as possible to make sure it was for sure to get soaked with hydraulic oil at some point), not so quality yet pretty pricy electronic- pots , motors, sensors, ect. the majority of the problems we came across were electrical , mixed with annoying "komatsu" hydraulic fittings and just a general lack of well thought out engineering on silly stuff and dependability. these are fine machines just disappointing in my opinion it wouldn't be my first choice for any business needing dependability, fine for some one looking for something on there property or farm or small operation especial if its any older than say 2008ish. the manuals leave alot to be desired as well. they aren't the worst machines by any means just disappointing worked on a pc120 lc6 pc200lc8 pc180 lc8 D85-12 pc220-8 pc400lc7

I don’t work on tractors but I knew it sounded like a controlled surge

FYI boys, my 1986 pc 200-3 has 19,000hrs on it and hasn’t missed a beat. She spent her prime working in civil, bulking out, hammering, doing sewer connect and final trim, her older years in forestry. now she’s in semi retirement making our land look pretty. In saying that my father bought it new and we both know how to look after our gear. A few ram seals, new set of chains, some pins and bushes is all she’s had done. Shows how long gear can last if you’re not a cowboy.

I work with Komatsu 15 years and older are better!

Komatsu are excellent. Especially the older ones.

Parts very expensive but it looks good

The old -3s to 5s were more reliable than the cats of the day

@@kozy41 They ran the komatsu SA6D125E

use to operate a PC300, other then an operator running the fuel dry and killing the diaphragm pump (one electrical pump later) and a starter dicking about you told her to work and she did it, even if she was parked up for 6 months. one of the most reliable machines we ever had

Komatsus are very reliable. peak japanese engineering. unfortunately they are not that common in USA. in Asian countries, Komatsus absolutely dominate CAT

@@lordjaashin One night in 2004, the komatsu dozers got pretty popular after their free commercial on every news station in America 🙂

@@williamk.7129 Marvin

@@djmips No step on snek.

I never doubted for 1 second

@@712Menzies O me of little faith. Merry Christmas to you...))

@@PageMarker1 merry Christmas! You just haven’t owned one or grown up with machines

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@@henrywhittingham1215 no you won’t

reference to John Deere....or when they do decide to answer the phone by that your'e like "Dear John"

That really not common to see, usually if I see an older one like the - 4 the machine is shot before the engine. They usually have things like overall worn bushings and play in the slewing gears.

Those big jump packs are the shit. We have one in our shop at work

Lol

Didn't pull the oil drain plug?

PC-1000 is 100 ton.

I don't own nor work on construction equipment but I like learning as much as I can so I appreciate people like you that take the time to write a comment that educates and helps others. I've saved thousands from reading comments alone so again, thanks.

@@tihspidtherekciltilc5469 I'm the same way, i love comments like that lol

Wow I didn’t think the swing bearing was that pricey?

@@duncandmcgrath6290 2.5 ton of internal tooth ball bearing precision ground to .002" or metric equilevent with 96 25mm bolt's each 150 mm long don't come cheap. Then add in the labor of spliting the machine upper structure from the lower and 10 years ago that was the bill.

@@dzrdr65 we had the same issue with our komatsu about 1 year ago. Repair cost with some other small stuff would be around 15000€ here in germany. Sadly that was the reason to let the old girl go. We got a liebherr 936 as replacement, but the old komatsu will definitely be missed.

Made for youtube not reality.

Mate your dead right, we have a Komatsu FG25 forklift with a Nissan H20 gasoline motor in it and it spent its entire life from when it was brand new, on the limiter around the shed. I mean that thing copped more pain them those Detroit's KT blew up

This time and two more (in the future) will make 3 times I have done this. Plain ole good ole boy plain talk.

@@davehertle 👍

It looks like an l10 or m11 Cummins

l10

Never saw that vintage with an M11 from the factory. but have seen it with the 855 cummins. I don't think the M11 will cut it with these pumps.

They have the 8.3 Cummins.

I agree that doesn't even look like a construction machine- the house is too nice. My guess would be aggregate or topsoil only, especially with those hours it was run a lot but not hard

That is low hours for a 50 ton komatsu

Looks like it was probably used to clean those miles and miles of irrigation ditches along the roadside.

100 ton

I agree. Sounds like it's over revving by a couple hundred rpms.

That was over 12 years ago and I know they still have it!

Low hydraulic oil, so the guys were being cautious, I'd say. Signs of lack of maintenance as the machine got closer to not being useful for the owner.

If it’s got the swash plate piston pump, the swash plate may not be angling over to high volume.

I was wondering about that. I don't know if they said it made it to the sight glass or not. I'm guessing not, I think a couple times I could hear the pump cavitation begging for more fluid. They probably only had 1 jug with them.

Dipper seems good speed going out, might just need an adjustment to the flow control valve on dipper cyl in function….

U can turn the pump up a little and make it fast as lighting lol

I've done those from both sides of the car! Carbureted Mustangs have it on the passenger side, and the EFI 5.0 Mustangs have it on the driver side.

Thats nice

Had to take a screwdriver to the starter solenoid on a old 5.0 bronco, eventually wired in a push start cuz I got tired of doing it manually

not at all likely, especially seeing as its farm country and they know farmers will take they're tractors, seeders and combines on it. It'll be engineered to take some weight, 100,000lbs really isn't all that heavy in general.

@@robbalinski1606 in general? There isn't one bridge in my county or any neighboring counties that could take that weight

@@haydona1845 And in my area we load a haul truck or a D-11 on 2 flatbeds pulled by two trucks side by side down the highway to the repair shop, or the dismantle area for rebuilds.

@@ducewags going to have to search for that.

@@guyod1 "Ellefson off Highway." channel here on the tube. Located just East of Hibbing Minnesota United States. Hope that helps you with the search.

Wouldn't it stumble badly then when under load as that requires more fuel? I know a lot of the newer small engine equipment I work on do that because of emission's "fixes" but smooth out under load. Usually, depending on the complaint, I replace the carb with the older adjustable style with an adjustable main jet but in my state that's legal for now anyway.

I think its the governor hunting?

it is probably the governor linkage, or adjustment causing the surge, pretty common. you need to re adjust and go a "Gov set" in the monitor (at least on the -6 machines) and should stop bouncing up top. pretty common