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Kobeleco 300lc

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Deere7240

Member
Joined
Feb 5, 2023
Messages
5
Location
Carthage indiana
Bought a 98 sk300lc with a new truck motor 8.3 Cummins in it. Haveing issues with it bogging down driveing or working the hydraulics. Fuel is good turbo is good. Air is good. It revs good just falls on its face when you go to work it. Any ideas on what to check?
 
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Shimmy1

Senior Member
Joined
Aug 14, 2014
Messages
5,571
Location
North Dakota
Governor is wrong. You are going to need a pump with a variable speed governor instead of a limiting speed. Tie the throttle fully open to the stop and see if that allows it to work properly.
 
willie59

willie59

Administrator
Joined
Dec 21, 2008
Messages
13,946
Location
Knoxville TN
Occupation
Service Manager
Shimmy1 said:
Governor is wrong. You are going to need a pump with a variable speed governor instead of a limiting speed. Tie the throttle fully open to the stop and see if that allows it to work properly.
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I agree with that. There may be other problems causing this, but from the get go a truck engine isn't going to have the proper variable speed governor required to run a piece of machinery properly.
 
D

Deere7240

Member
Joined
Feb 5, 2023
Messages
5
Location
Carthage indiana
Shimmy1 said:
@thepumpguysc might have some actual information for you. Get the numbers off your fuel pump so he can determine what you have.
Click to expand...
Disconnected the throttle arm and it still did the same thing a little better but still poured the black smoke and bogged down
 

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willie59

willie59

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Messages
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Location
Knoxville TN
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Service Manager
That pump has an aneroid valve on it, if it's not working proper it won't make HP worth a flip. Heavy black smoke is typically caused by not enough air for the fuel being injected into the combustion chambers. Could be a failed turbo, but be sure to check all the silicone rubber hose pipe connections in the intake piping after the turbo, especially the back side of of those hose couplers where you can't see, if you pop a hole in one of those hoses and loose turbo pressure you're going to get loss of power and black smoke.
 
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