edgephoto
Senior Member
See posts #34 and #35 for electronic copies. I posted them
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416 Caterpillar backhoe project
- Thread starter waybel
- Start date
edgephoto
Senior Member
I found on my 426 that the fuse holders had enough corrosion that many of them had poor contact and electrical stuff did not work.
I removed all the fuses and chucked a .223 rifle bore brush in a drill and polished them all. Then installed new fuses. Problems solved.
I removed all the fuses and chucked a .223 rifle bore brush in a drill and polished them all. Then installed new fuses. Problems solved.
Well the old backhoe starts up fine if you start it every 2 or 3 days but leave it for a week and it tries to start and then seems to run out of fuel then won't start.My brother in law who ran skidders in the bush for many years came over for a visit to see it .Tried to start it after at least a week and it tried to start then dies.He said to put an electric fuel pump on it and that would solve the problem.What kind of electric fuel pump do i need.?I 'm guessing some type of inline pump and hook up a switch in the cab?E
HarleyHappy
Senior Member
Sounds like you’re sucking air somewhere and the fuel will leak out causing more air.
Nige
Senior Member
Fix that problem correctly, most likely getting air in somewhere, rather than trying to Band-Aid a fix.
In your position I would ignore your BIL's suggestion.
Have you got any manuals for it yet.?
Any chance it could be the manual fuel pump?I don't see leaks anywhere
pittsburgh cat man
Senior Member
I was thinking about this last night there are rubber olives they call them at the water separator I would start there and yes the check valves in the transfer pump could be leaking
Think i will change the pump .It doesn't cost a lot and if it is not the cause then i know it isn't that. It's strange because if i start it every day or even 2 days it starts and runs fine .I let it sit a week and then fuel /air issues and won't start
Well after getting it started with wd40 i let it run for 30 minutes ...the longest i have had it running so far.Had a leak from the line at the injection pump to the back injector and the the lift tranfer pump is also leaking .I tightened the bolt at the injection pump line and that stopped that leak.I ordered a new transfer pump .Do these engines run cold?had it running 30 minutes and coolant is barely warm .Going to a cold winter plowing with not much heat lol .I imagine when the machine is working warms up faster
pittsburgh cat man
Senior Member
They usually warm up better using the front bucket rather than the hoe I’ve plowed snow with them you are usually looking for the coat hook pretty quick your door might cause problems though
Hopefully i can get er closed in before the winter lol
HarleyHappy
Senior Member
Ya, they get warm in the winter, that’s for sure. I did buy a little plug in heater for my feet and never bothered to put a cigarette lighter receptacle in, as I never needed it.
Nige
Senior Member
Have you checked to see if a previous owner removed the temperature regulator (thermostat) before you got the machine.? That could explain why it is slow to warm up.
no have not checked that but will
Finally got the new lift pump today and will install tomorrow when i get the new rubber olives.Does the olive go over the steel line then pushed into the pump and thread the line in or does the olive go in to the pump inlet first then screw the line on?
pittsburgh cat man
Senior Member
Been a long time but I think I remember on the lines first
Well it's been awhile but after installing new lift pump and olives seems to hopefully solved the problem.Have been working on new floor and cab body work.Had batteries disconnected and put them back in temporarily after 4 wekks and it started right up.Got the floor finally done and made a new battery box .Getting ready to try and make a couple of doors.Has anyone ever made doors for these ?
Nige
Senior Member
Have you checked whether or not it has a thermostat yet.?
i finally ran it for awhile and used the loader and lots of heat.My loader goes up slowly .Guessing that any cylinder leaking on this backhoe can cause this problem allowing air in the system? . The up and down loader cylinder is leaking
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