We have recently bought a 2006 Tigercat 625c skidder and are having some issues. If anyone has some advice, ideas would be greatly appreciated. It has a 5.9 Cummins in it and bogs down a lot, under powered. Highest Engine torque is 75% and turbo boost 19 psi. Is this normal for this engine? Also the fan is sucking in air through the rad, shouldn’t it be the other way? It gets really hot in under the hood also where the pre cleaner is....I’m thinking it shouldn’t be sucking in this hot air into the motor? I see on later Tigercat models the pre cleaner is up out side the hood, should we do this with ours too? Or turn the fan around? Another thing that has popped up is the reverse is weak, you turn up the speed dial and it’s like it’s slipping/ bypassing or something... any help for where to start with that would be great. Thanks.
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2006 Tigercat 625c issues
- Thread starter JasonC100
- Start date
thepumpguysc
Senior Member
- Joined
- Mar 18, 2010
- Messages
- 7,535
- Location
- Sunny South Carolina
- Occupation
- Master Inj.Pump rebuilder
The main culprit w/ the 5.9 is the supply pump.. MAKE SURE your getting enough fuel to the inj. pump INLET.. Depending on what fuel system is on that 5.9, theres 4 or 5 diff inj. pumps, the psi to the inlet varies from "gravity feed" 1-3 psi to 25 psi..
The boost is "ok".. they norm. run 17psi min.
The boost is "ok".. they norm. run 17psi min.
What were the other skidders you looked at to select this one?
A direction to take might be to send the machine (while it is still capable of climbing onto a low deck trailer under its own power) to the best TigerCat / TC affiliated workshop/ mechanics you can find. Then for them organise a rental machine if you don't have enough spare machines of your own. From the shop get a written quote to fix what they have found wrong in their inspection before any big money is spent. Once you know what is wrong and have been presented with a price to fix the machine to a workable condition, you will have to decide whether that is worthwhile. There are likely to be TC factory upgrades available for some features to consider.
What you have described can be both low or high cost to repair. If high in total........
You might end up leaving that machine at the workshop and getting the TC people to find you a better used 4x4 TC skidder as the most economic option.
If you keep using the machine it is likely headed on a one way trip to the parts yard. Sounds like a former ROW timber clearing oil fields machine.
A direction to take might be to send the machine (while it is still capable of climbing onto a low deck trailer under its own power) to the best TigerCat / TC affiliated workshop/ mechanics you can find. Then for them organise a rental machine if you don't have enough spare machines of your own. From the shop get a written quote to fix what they have found wrong in their inspection before any big money is spent. Once you know what is wrong and have been presented with a price to fix the machine to a workable condition, you will have to decide whether that is worthwhile. There are likely to be TC factory upgrades available for some features to consider.
What you have described can be both low or high cost to repair. If high in total........
You might end up leaving that machine at the workshop and getting the TC people to find you a better used 4x4 TC skidder as the most economic option.
If you keep using the machine it is likely headed on a one way trip to the parts yard. Sounds like a former ROW timber clearing oil fields machine.
Good morning, thanks for your reply, will look into it. CheersThe main culprit w/ the 5.9 is the supply pump.. MAKE SURE your getting enough fuel to the inj. pump INLET.. Depending on what fuel system is on that 5.9, theres 4 or 5 diff inj. pumps, the psi to the inlet varies from "gravity feed" 1-3 psi to 25 psi..
The boost is "ok".. they norm. run 17psi min.
Thanks for your reply, I guess saying recently bought, we have done around 700 hrs on it. It was bought at an action, it’s in pretty strait condition for just clicking over 8000 hrs. The reverse issue has just starting happening.... just wondering if this has came up with anyone else. I’m sure if we look into the fuel pressure/ supply pump as recommended buy thepumpguysc the power issue will get sorted. Being based just west of Calgary, Tigercat Services aren’t very strong I guess I could say as there’s not a lot of logging done around here, it’s mostly done further north of the province. The reason we got a six wheel drive is we are in some really challenging ground and a 4x4 machine can’t get to the wood, especially when the ground is frozen. With all six wheels chained up, this thing can climb and very stable on the hill. For years I run a Cat 527 with a swing boom on it to forward wood so the 4x4’s could get to it, but they are slow and hard on the body and machine bouncing over stumps. Cheers mate.What were the other skidders you looked at to select this one?
A direction to take might be to send the machine (while it is still capable of climbing onto a low deck trailer under its own power) to the best TigerCat / TC affiliated workshop/ mechanics you can find. Then for them organise a rental machine if you don't have enough spare machines of your own. From the shop get a written quote to fix what they have found wrong in their inspection before any big money is spent. Once you know what is wrong and have been presented with a price to fix the machine to a workable condition, you will have to decide whether that is worthwhile. There are likely to be TC factory upgrades available for some features to consider.
What you have described can be both low or high cost to repair. If high in total........
You might end up leaving that machine at the workshop and getting the TC people to find you a better used 4x4 TC skidder as the most economic option.
If you keep using the machine it is likely headed on a one way trip to the parts yard. Sounds like a former ROW timber clearing oil fields machine.
Hey mate, if we had to upgrade the supply pump, what pump would you recommend? The engine serial number is 46542026. Thanks again for your help.The main culprit w/ the 5.9 is the supply pump.. MAKE SURE your getting enough fuel to the inj. pump INLET.. Depending on what fuel system is on that 5.9, theres 4 or 5 diff inj. pumps, the psi to the inlet varies from "gravity feed" 1-3 psi to 25 psi..
The boost is "ok".. they norm. run 17psi min.
partsandservice
Senior Member
The fan should be blowing out, pusher. You should be able see the inputs from the travel pedals on the screen under measure the voltage input. Make sure it is reading full travel percentage. I have found directional issue with Linde drive pump that was worn packing on the servo piston. Some Cs had the rexroth drive pump. Is the yellow or red light staying on during operation, if you have an engine code that could have the ecu in a derate condition. If I recall correctly this engine has the vp44 injection pump with an electric supply pump. Low voltage could cause low supply fuel pressure/volume. Also check air to air connections. Does the engine produce any abnormal smoke under load. The coolant level sensor was often an issue on these skidders and would result in a derate.
thepumpguysc
Senior Member
- Joined
- Mar 18, 2010
- Messages
- 7,535
- Location
- Sunny South Carolina
- Occupation
- Master Inj.Pump rebuilder
If it is indeed a VP44, fuel pressure is VERY important to that fuel system.!!
IF the supply pump "goes out", which IS VERY COMMON, the inj. pump will still run the engine but at a de-rated rpm & slowly eat itself up internally.. THAT MEANS not only will u be buying a supply pump, but an inj. pump as well.. {$$$}
IDK where "U" would tap into the supply line.?? I have a inlet banjo bolt that I drilled & tapped to check the inlet pressure.. it takes the place of the engines inlet bolt/screw.. its a 12x1.5mm if memory serves me correctly.. {its either a 12 or a 14x1.5mm}
IDK if the manuf.{Cummins} or if its an aftermarket product but.. the supply pumps quit on those machines SO OFTEN that "someone" came up w/ a system to monitor the pressure from the cab..
Just search>> "Cummins fuel pressure kit" .. the little system comes w/ all the banjo bolt tie-in's & small hoses & an "idiot lite" that mounts in the cab.. When the pressure drops, the lite comes on= supply pumps isn't pumping the correct amount of fuel..
I hope this helps..
IF the supply pump "goes out", which IS VERY COMMON, the inj. pump will still run the engine but at a de-rated rpm & slowly eat itself up internally.. THAT MEANS not only will u be buying a supply pump, but an inj. pump as well.. {$$$}
IDK where "U" would tap into the supply line.?? I have a inlet banjo bolt that I drilled & tapped to check the inlet pressure.. it takes the place of the engines inlet bolt/screw.. its a 12x1.5mm if memory serves me correctly.. {its either a 12 or a 14x1.5mm}
IDK if the manuf.{Cummins} or if its an aftermarket product but.. the supply pumps quit on those machines SO OFTEN that "someone" came up w/ a system to monitor the pressure from the cab..
Just search>> "Cummins fuel pressure kit" .. the little system comes w/ all the banjo bolt tie-in's & small hoses & an "idiot lite" that mounts in the cab.. When the pressure drops, the lite comes on= supply pumps isn't pumping the correct amount of fuel..
I hope this helps..
Hi there, thank you for the info. This is great. I will pass this onto the mechanic and we will be looking into it tomorrow. There are no yellow or red lights on, it just bogs down on the slightest hill or just driving and opening and closing the grapple. Heats up quick too under load. Reverse slows right down under load/incline. Ass for smoke, it blows out puffs of blue.. thanks again.The fan should be blowing out, pusher. You should be able see the inputs from the travel pedals on the screen under measure the voltage input. Make sure it is reading full travel percentage. I have found directional issue with Linde drive pump that was worn packing on the servo piston. Some Cs had the rexroth drive pump. Is the yellow or red light staying on during operation, if you have an engine code that could have the ecu in a derate condition. If I recall correctly this engine has the vp44 injection pump with an electric supply pump. Low voltage could cause low supply fuel pressure/volume. Also check air to air connections. Does the engine produce any abnormal smoke under load. The coolant level sensor was often an issue on these skidders and would result in a derate.
This helps a lot, thank you. Will be looking this up.If it is indeed a VP44, fuel pressure is VERY important to that fuel system.!!
IF the supply pump "goes out", which IS VERY COMMON, the inj. pump will still run the engine but at a de-rated rpm & slowly eat itself up internally.. THAT MEANS not only will u be buying a supply pump, but an inj. pump as well.. {$$$}
IDK where "U" would tap into the supply line.?? I have a inlet banjo bolt that I drilled & tapped to check the inlet pressure.. it takes the place of the engines inlet bolt/screw.. its a 12x1.5mm if memory serves me correctly.. {its either a 12 or a 14x1.5mm}
IDK if the manuf.{Cummins} or if its an aftermarket product but.. the supply pumps quit on those machines SO OFTEN that "someone" came up w/ a system to monitor the pressure from the cab..
Just search>> "Cummins fuel pressure kit" .. the little system comes w/ all the banjo bolt tie-in's & small hoses & an "idiot lite" that mounts in the cab.. When the pressure drops, the lite comes on= supply pumps isn't pumping the correct amount of fuel..
I hope this helps..