40 serries ford sle pto problems

agrimax

Member
Location
Co Down
It was just idle curiosity on my part as back then I wondered why I never had to replace a fuse but maybe it was bypassed.It's of no relevance now as I've thankfully no longer got the bundle of scrap that it was!
 

aggalise

New Member
agrimax, just to let you know ours has the 5 amp fuse in fuse panel for pto, but was not blowing, this is what we could not understand. whe we tried the test nearly suggested the jumper fuse blew. we then disconected at connection at pigtail before gromet, retested .all systems fine. so aparently wires to solenoid inside case must be shorted, since pto was working at times, i think solenoid good. we ran disc bine couple weeks ago after getting it to come on. not long ago got this tractor,been used to tractors from the old days,they were a lot simpler to work on. bundel of scrap huh? mabe not such a good upgrade from our 1982 285 mf. have a good day, aggalise.
 

MF 168

Member
Location
Laois, Ireland
Could be faulty pto switch or loose wiring. Check the wires on the alternator are tight and making good connection and is it actually charging good. Belt tight? Also pto control relay in fuse box may need swapped with a known good one. The insulation on the wires going to the pto control valve is known to break down.Can be got at through the round plate on the left side in front of the left trumpet housing.Behind the lower fuel tank(if you have one). Had this on my 8240--the wires were completely bare,internally from the rubber grommet to the valve.
I have a problem with my 8340's pto. Yesterday while on the diet feeder the pto just stopped turning. When it was knocked off and then reengaged you'd hear a slight pull on the engine but nothing happening after that. We've pulled off that round plate to look inside and when you start the tractor oil is pouring out of the pto solenoid area. It looks like it's spraying out around the pto brake actuator but it's hard to tell there's so much coming out. As soon as you engage the pto that oil pretty much stops flowing and only a bare trickle comes out. The tractor was on an agitator a few days ago and was ran flat out for most of a day fully loaded with no problem at all.
For now I'm wondering if all that oil running out of the pto area is normal when the pto is off or has it blown out an o-ring or something?.
 

Drillman

Member
Mixed Farmer
I have a problem with my 8340's pto. Yesterday while on the diet feeder the pto just stopped turning. When it was knocked off and then reengaged you'd hear a slight pull on the engine but nothing happening after that. We've pulled off that round plate to look inside and when you start the tractor oil is pouring out of the pto solenoid area. It looks like it's spraying out around the pto brake actuator but it's hard to tell there's so much coming out. As soon as you engage the pto that oil pretty much stops flowing and only a bare trickle comes out. The tractor was on an agitator a few days ago and was ran flat out for most of a day fully loaded with no problem at all.
For now I'm wondering if all that oil running out of the pto area is normal when the pto is off or has it blown out an o-ring or something?.
We just been into back end on our 8240 and done the PTO plates and seals, parts came to £100 so can’t grumble really. Plates were ok but at some point in the past it musta got hot as seals were all like vinyl

PTO had stopped working together but is fine now.
 

MF 168

Member
Location
Laois, Ireland
We just been into back end on our 8240 and done the PTO plates and seals, parts came to £100 so can’t grumble really. Plates were ok but at some point in the past it musta got hot as seals were all like vinyl

PTO had stopped working together but is fine now.
Is the pto accessible from the top or had you to split the tractor?.
 

agrimax

Member
Location
Co Down
You need to raise the back of the cab a couple of inches,minding the windscreen as you lift,and then lift the hyd lid off the top. Also,the top link bracket has to come off,then a plate,a cluster gear and a shaft that goes through the pto pack.
 

MF 168

Member
Location
Laois, Ireland
You need to raise the back of the cab a couple of inches,minding the windscreen as you lift,and then lift the hyd lid off the top. Also,the top link bracket has to come off,then a plate,a cluster gear and a shaft that goes through the pto pack.
Chatting to a mechanic this morning who would have worked extensively on those tractors in the day and he said it's damn near 50/50 whether you split it at the transmission or lift off the lift cover. He advised me if we've a good way of working that splitting would be easier. I've adjusted the aluminium collar that carries the oil to the pack as it was quiet slack and had moved back a bit. The pto seems to be ok now but I'll know more this morning when it goes onto the agitator again. Here's hoping. I've enough on without ripping into that as well.
 

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