743 Bobcat

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rickyboy

Member
Joined
Feb 7, 2009
Messages
17
What would cause loss of power when machine goes up slight incline? It starts up and runs fine. How often do injectors need to be cleaned or replaced? Machine has 2200 hours. Thanks for your help.
 

skidsteer.ca

Well-known member
Joined
Jan 20, 2006
Messages
3,853
Likely you fuel filteris duo to be changed, it is causing a drop in fuel flow reducing power, next in line is the air filter. These are the common problems. The 743 through 773 non turbo where not real hi hp machines anyway and drivng up hill with a load especially at higher speeds can show these limitations, especially if you have filter troubles. Aside from this is hard to say, lift pump not working, injection pump or injector troubles. But the latter should not be a issue with those low hours.
Ken
 

ddsprint

Well-known member
Joined
Dec 23, 2008
Messages
46
Likely you fuel filteris duo to be changed, it is causing a drop in fuel flow reducing power, next in line is the air filter. These are the common problems. The 743 through 773 non turbo where not real hi hp machines anyway and drivng up hill with a load especially at higher speeds can show these limitations, especially if you have filter troubles. Aside from this is hard to say, lift pump not working, injection pump or injector troubles. But the latter should not be a issue with those low hours.
Ken
check the fuel primer ball just behind the filter, it looks like the same kind that boat motors have, sometimes when they go bad they suck tight,
 
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rickyboy

Member
Joined
Feb 7, 2009
Messages
17
Likely you fuel filteris duo to be changed, it is causing a drop in fuel flow reducing power, next in line is the air filter. These are the common problems. The 743 through 773 non turbo where not real hi hp machines anyway and drivng up hill with a load especially at higher speeds can show these limitations, especially if you have filter troubles. Aside from this is hard to say, lift pump not working, injection pump or injector troubles. But the latter should not be a issue with those low hours.
Ken
thank you for the help, started up the old machine today only because the temp got up to 48 degrees. now there is a new problem, the lift side works but seems to stick, the tilt side does not work at all, hydro filter very hot to the touch, lifted seat to tap valve control no change, any help on this one, seems to me the valve body is sticking ??? what is anything can I do ?? thank you for your help
 

sterlclan

Well-known member
Joined
May 1, 2004
Messages
528
thank you for the help, started up the old machine today only because the temp got up to 48 degrees. now there is a new problem, the lift side works but seems to stick, the tilt side does not work at all, hydro filter very hot to the touch, lifted seat to tap valve control no change, any help on this one, seems to me the valve body is sticking ??? what is anything can I do ?? thank you for your help
check that the right stick is not stuck in detent for the aux hyd move it left and right till it pops into the center . if you have no need for the aux a bolt will fit into the bottom of the stick and prevent this....Jeff
 

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