Hydraulic issue on F14D

[bmaverick]

Thanks for the replies gents. The part number bmaverick matches this filter:

https://www.tracpartz.com/p/suction-filter-hydraulics-yanmar-ym-serie-c12w-c25w-c30r-f-komatsu-hd20-hd25/

I will order a filter immediately. I have a mechanic friend working on the tractor as I don't have anywhere clean enough to have it disassembled. He tested the system without the filter but is getting intermittent flow from the pump. It also seems to be making a great deal of noise so I may be in for a new pump too.

I have not found a p/n for the F14/F15 filter screen yet to confirm.

I would strongly confirm with @AaronM at Brand M the exact p/n for your model. This is a mystery.

The link you provided has a filter screen with a PIN at one end. This is used on the F16 model. Not confirmed for F14/F15 yet.

SFHS-4430 HYDRAULIC SCREEN

Hyd. screen Fits Yanmar: F16, YM180, YM187, YM220, YM226, YM250, YM1502, YM1602, YM1702, YM1720, YMG1800, YM1802, YM1810, YM1820, YMG2000, YM2002 Repl. 194430-24930

www.southernfarmequipmentimports.com

 

[bmaverick]

The Brand M site shows this, but no info for the screen filter.

 

[bmaverick]

And there are 2 possible setups for the F14/F15 for the filter screen locations. Brand M shows the same info as mentioned before.

Hydraulic Screen Tube Gasket -AQ

Yanmar Hydraulic Screen Tube Gasket Seals the hydraulic intake screen against the side of the transmission. Replaces Yanmar 194200-48921

brandmparts.com

 

[careyo63]

I use a FEL that is completely self contained. Separate Hyd. pump. Dirt and debris through that filter isn't much of a doubt from the Pics.. My FEL had the same problem NTM. Early 60's model and it was the Hyd. line Suction to the pump blistered and pinched inside it at a bend. A pump works or it doesn't most all of the time. When they don't the Drive pin has been sheared to prevent damage to it. Then it doesn't work! Sounds like your FEL is spliced into the factory Sys.. If it is where I'd be looking for a problem. Tech. it's still working so you haven't found the flow problem is my guess.

 

[samthedog]

A little searching and Aaron has a CLUE. And the F14/F15 had two styles for this filter location.

https://www.tractorbynet.com/forums/threads/where-is-my-hydraulic-screen.328372/#post-3992574
View attachment 5302066

https://www.tractorbynet.com/forums/threads/where-is-my-hydraulic-screen.328372/#post-3992753

View attachment 5302067

I keep finding the 194250-48310 filter all over the web, yet no clues on the screen cartridge.

https://www.brufox.com/product-p-733320.html

Mine is the second style of setup. The mechanic has been playing with the system and it is pumping fluid intermittently with the filter removed. He is not getting a constant flow so he is checking the pump now. I can't see any hydraulic lines that are on the input side of the pump that could be causing any issues.

 

[samthedog]

I use a FEL that is completely self contained. Separate Hyd. pump. Dirt and debris through that filter isn't much of a doubt from the Pics.. My FEL had the same problem NTM. Early 60's model and it was the Hyd. line Suction to the pump blistered and pinched inside it at a bend. A pump works or it doesn't most all of the time. When they don't the Drive pin has been sheared to prevent damage to it. Then it doesn't work! Sounds like your FEL is spliced into the factory Sys.. If it is where I'd be looking for a problem. Tech. it's still working so you haven't found the flow problem is my guess.

It's working but very intermittent. My friend is taking the pump off to have a look to see if there is any issue there. He's going on holidays on Wednesday so I hope he manages to get it figured out before then.

 

[bmaverick]

Mine is the second style of setup. The mechanic has been playing with the system and it is pumping fluid intermittently with the filter removed. He is not getting a constant flow so he is checking the pump now. I can't see any hydraulic lines that are on the input side of the pump that could be causing any issues.

The pump might need a back flush. Those are easy to rebuild vs buy a costly replacement.

 

[bmaverick]

Mine is the second style of setup.

Being the 2nd setup, its possible the pump is fine and the jumper hose decayed causing an internal inside wall blockage that flaps. This would be an intermittent problem with flow.

 

[samthedog]

Being the 2nd setup, its possible the pump is fine and the jumper hose decayed causing an internal inside wall blockage that flaps. This would be an intermittent problem with flow.

View attachment 5303168

Thanks @bmaverick - I have the hydraulic screen filters arriving today. I had my friend check the suction side of the system and he couldn't find anywhere that air could be coming in from. He has now taken off the old hydraulic pump and is checking that since the flow is intermittent. I still suspect that there might be a number of issue that need resolving. The hydraulic fluid appears milky so water was clearly present in the fluid. In addition the filter was damaged so who knows what else needs to be addressed. I think everything needs a good overhaul.

 

[bmaverick]

Thanks @bmaverick - I have the hydraulic screen filters arriving today. I had my friend check the suction side of the system and he couldn't find anywhere that air could be coming in from. He has now taken off the old hydraulic pump and is checking that since the flow is intermittent. I still suspect that there might be a number of issue that need resolving. The hydraulic fluid appears milky so water was clearly present in the fluid. In addition the filter was damaged so who knows what else needs to be addressed. I think everything needs a good overhaul.

oh that milky feeling.

Atop the hydraulic system Yanmar 'typically' has a hook vent tube. It screws into the top rear of the housing cover. This would be under or slightly behind the seat when the seat is flipped forwards. The vent is to be functional for removing water vapor. Wasps and other insects tend to get inside, plug the tube up.

Water has a strange way of getting inside. The shift boot and seal is a common culprit for this water entry.

Air does enter the system from the tube you had inspected. Usually the rear clamp on the tube has a few microns allowing the suction pump to draw in air. It may not even leak nor weep there, yet under suction pressure, it pulls air in like a ventri function.

To flush out the system, diesel fuel is used. It is compatible to the hydraulic system. IF it's really bad as you are mentioning, a full bottle of Seafoam Trans Tune with diesel on a 2nd fill, run at low rpms and running through all the gears, including creeper, to clean and remove stubborn build up would be ideal.

Then you can determine if the suction pump really need an overhaul/rebuilt/replacement.

 

[samthedog]

oh that milky feeling.

Atop the hydraulic system Yanmar 'typically' has a hook vent tube. It screws into the top rear of the housing cover. This would be under or slightly behind the seat when the seat is flipped forwards. The vent is to be functional for removing water vapor. Wasps and other insects tend to get inside, plug the tube up.

Water has a strange way of getting inside. The shift boot and seal is a common culprit for this water entry.

Air does enter the system from the tube you had inspected. Usually the rear clamp on the tube has a few microns allowing the suction pump to draw in air. It may not even leak nor weep there, yet under suction pressure, it pulls air in like a ventri function.

To flush out the system, diesel fuel is used. It is compatible to the hydraulic system. IF it's really bad as you are mentioning, a full bottle of Seafoam Trans Tune with diesel on a 2nd fill, run at low rpms and running through all the gears, including creeper, to clean and remove stubborn build up would be ideal.

Then you can determine if the suction pump really need an overhaul/rebuilt/replacement.

The funny thing is that on my tractor there is no rubber hose connection like in the images. From the hydraulic pump to the screen filter is a solid metal pipe. My tractor doesn't use gaskets either, it has O rings to seal the system. It appears like there are a number of variants of this tractor. That alone has made it far more challenging to try understand what is going on. I am tempted to disassemble the hydraulic housing, the hitch control valve and the drop-rate valve and go through everything. I just take comfort in the fact the tractor has only done 600 hours so hopefully the damage or issues should not be major.

 

[samthedog]

Thanks to @bmaverick for the suggestion to use the diesel and additive for a gearbox flush. The gearbox has been flushed and it appears that the main issue was moisture in the hydraulic fluid. I am giving the gearbox 2 flushes and will go over all O-rings and seals from the various handles, control knobs and shift boot seal. It looks like the suction pump was in good condition, including the old one that was replaced because it had "failed". I don't think the previous owner had followed up on his friend doing the oil and filter changes on the hydraulic system and it's likely his friend just used the old, emulsified oil. I'll post back when we have it all put back together.

 

[careyo63]

Whale oil take a wiff of the finger

 

[bmaverick]

Thanks to @bmaverick for the suggestion to use the diesel and additive for a gearbox flush. The gearbox has been flushed and it appears that the main issue was moisture in the hydraulic fluid. I am giving the gearbox 2 flushes and will go over all O-rings and seals from the various handles, control knobs and shift boot seal. It looks like the suction pump was in good condition, including the old one that was replaced because it had "failed". I don't think the previous owner had followed up on his friend doing the oil and filter changes on the hydraulic system and it's likely his friend just used the old, emulsified oil. I'll post back when we have it all put back together.

When you refill the fluid, best to use J20C. This is the formula in Deere Hygard, Yanmar TF500A and meeting the same requirements Kubota UDT.

 

[careyo63]

Have him check the rear end to! He's a professional. Grease it up

 

[samthedog]

When you refill the fluid, best to use J20C. This is the formula in Deere Hygard, Yanmar TF500A and meeting the same requirements Kubota UDT.

View attachment 5481849

View attachment 5481850

Thanks @bmaverick - I gave him 20 litres of Hy-gard. I will be going over the whole tractor when I get it back. I have bought new tires, new decals and will be ordering a bunch of spares to have on standby. My aim is to have it repainted and running 100% this summer.

 

[samthedog]

I had quite a challenging time to source the parts I needed to get the tractor running. Because of this, I have ordered or am in the process of ordering the following to have them on hand:
- Injector tips / atomizers
- Glow plugs
- New thermostat
- Water pump and gaskets
- Replacement fan belts
- Additional oil, hydraulic, air and fuel filters
- I already have a spare hydraulic pump on hand
- Trickle charger to keep battery conditioned over winter
I know this is just a baby tractor but having just gone through back pain due to bulging disks, it will make my life much easier if I take care of it.

 

[bmaverick]

I had quite a challenging time to source the parts I needed to get the tractor running. Because of this, I have ordered or am in the process of ordering the following to have them on hand:
- Injector tips / atomizers
- Glow plugs
- New thermostat
- Water pump and gaskets
- Replacement fan belts
- Additional oil, hydraulic, air and fuel filters
- I already have a spare hydraulic pump on hand
- Trickle charger to keep battery conditioned over winter
I know this is just a baby tractor but having just gone through back pain due to bulging disks, it will make my life much easier if I take care of it.

Fuel filter, o-ring and bowl are a must have as spares.

 

[samthedog]

Fuel filter, o-ring and bowl are a must have as spares.

Good point. I will put that on the list.
I did get everything working on the tractor. I will post picks when I am back home (I'm in Poland at the moment). I will be changing the tires next week on the tractor and the trailer I have purchased for it.

I tested it with fetching firewood and am really pleased with it. I know it's a toy but when you have been hauling wood with a wheelbarrow through a forest, anything is a big step up!

 

[bmaverick]

Good point. I will put that on the list.
I did get everything working on the tractor. I will post picks when I am back home (I'm in Poland at the moment). I will be changing the tires next week on the tractor and the trailer I have purchased for it.

I tested it with fetching firewood and am really pleased with it. I know it's a toy but when you have been hauling wood with a wheelbarrow through a forest, anything is a big step up!

Ah ha, Poland has MANY vintage Yanmars running around there. I bet you might even see a few if you are out in the country.

Here is the Polish forum I visit with YANMARS.
Jest to doskonała strona poświęcona traktorom w regionie Polski, wspierająca wielu właścicieli.

Yanmar

poljoprivredni-forum.com