Oil & Fuel TC 45D Died

[jinman]

Skinnr, did you crack open the injector lines at the head to see if fuel was bubbling out or maybe nothing coming out? A failing injector pump wouldn't just stop completely and start again only to stop again in my opinion. It would slowly degrade or catastrophically fail, not on-again-off-again. It just seems to me that you might have a clog or a slug of water that will not combust. The fuel pump on the engine block is very low pressure. When the fuel tank is full, you probably don't even need it to aid the fuel supply. It just ensures there is a positive fuel pressure to the injector pump when the fuel tank is low and you might be operating the tractor on uneven terrain. As we have found though, if the fuel filter is not sealing tight, you could be drawing air into the fuel pump, but that would mean the injector pump would not see fuel at the inlet hose.

Anyhow, I still think you have a clog in a line or pump and/or water in the fuel. The symptoms just seem to support that instead of a mechanical failure of the pump. Of course this is a SWAG of a non-expert.

 

[skinnr]

JerryG to answer your question NO. That is something I know would be the death of my pump. I had just set the outriggers and was unpinning it when it slowly started to die. For whatever reason after a few hours of tinkering it fired up and ran fine. Yesterday I got on it and it would not fire. Thanks Jinman for the fuel pump confirmation. I figured it was a low pressure system and with the fuel tank full, the gravity is supplying the top of the injector pump with plenty of fuel. I did crack the bleed screw on the injector pump and fuel comes out of that at a steady stream. After the bleed screw no fuel. No fuel at the discharge side of the injector pump and no fuel at the injectors themselves. Since the fuel pump is low pressure this leads me to believe that it is a clogged injector pump or a bad pump all together. I was just unsure about the pressues from the fuel pump. Looks like I need to figure out how to get the clog out of the injector pump or how to check to see if it is even clogged. Before pulling the whole pump I would like to try to see if I can dislodge the clog first. Any ideas ? I don't want to mess up the pump by trying to free a plug.

 

[Jerry/MT]

By any chance did you uncouple a QD while the engine was running?

JBrink64,
Out of curiosity, what are the consequences of uncoupling a QD with the engien running? I do it all the time with my Ford 4610. I do make sure there is no load on loader when I disconnect the coupler, otherwise I can't disconnect it.

 

[Jbrink64]

JBrink64,
Out of curiosity, what are the consequences of uncoupling a QD with the engien running? I do it all the time with my Ford 4610. I do make sure there is no load on loader when I disconnect the coupler, otherwise I can't disconnect it.

on the 4610, with the levers in neutral, nothing will happen. On a compact with a BH, the QD's (for the BH) have constant flow. Uncoupling with the engine running dead heads the pump so it goes over relief. If the engine is at low idle, it will sometimes stall, then makes it almost impossible to restart.

 

[skinnr]

Depending on how it is plumbed it can seize your hydraulic pump. One of the lines is the PB or Power Beyond line. Sort of acts like recirculation or bypass line. The fluid has to have some place to go. If you unhook with the engine running it will jam up your pump. This only pertains to hooking up equipment through your loader control valve. This does not include a rear remote. With a rear remote the PB is hard plumbed back into the hydraulic tank etc. I am sure ther is a better way to explain it but that is how I understand it. If you have been doing it with your Ford for several years I am pretty sure yours is plumbed different. I run my plumbing off the loader control. Its cheaper than adding a rear remote but does have some drawbacks.

 

[Jerry/MT]

on the 4610, with the levers in neutral, nothing will happen. On a compact with a BH, the QD's (for the BH) have constant flow. Uncoupling with the engine running dead heads the pump so it goes over relief. If the engine is at low idle, it will sometimes stall, then makes it almost impossible to restart.

You'll have to explain what you mean by "BH".

Would this disconnect problem apply to my TD95D IF I disconnected it at the loader mid valve on the right side of the tractor? Or, is this something just on the compacts.

 

[Jbrink64]

You'll have to explain what you mean by "BH".

Would this disconnect problem apply to my TD95D IF I disconnected it at the loader mid valve on the right side of the tractor? Or, is this something just on the compacts.

BH=backhoe

This is sorta unique to the compacts and their BH connections.

 

[Jerry/MT]

BH=backhoe

This is sorta unique to the compacts and their BH connections.

Thanks for filling me in! I learn something new all the time.

 

[skinnr]

No one has any ideas? We all can't throw in the towel yet I know someone has worked on these injection pumps before. I hate to give in to the dealership and give it to them to fix. Edited for content

 

[jinman]

No one has any ideas? We all can't throw in the towel yet I know someone has worked on these injection pumps before. I hate to give in to the "stealership" and give it to them to fix.

Skinnr, if I was standing over your tractor, I might have several ideas, but without that direct feedback of seeing the issues, I sure don't have anything to add. Also, for what it is worth, some of the best help on this forum comes from dealers, techs, and service managers. I'm pretty sure you were joking and just didn't think about how it might sound, but folks who make their living selling and working on tractors at low margins just may be offended enough to end their free advice to someone who gives the appearance of being ungrateful. I have a hydraulic pump at my dealer's service department right now being fixed. Sometimes it saves you money and grief to just let somebody else have a look. I appreciate both free and paid help I get from my dealer and those who are dealers or techs on this forum.:thumbsup: