140H Transmission issues

[Fowjacob]

Got a 140H kicking my butt!
2ZK prefix
Machine only had 1F,5F,1R,4R. Machine will kinda spin the tires with them off the ground in other gears
No codes
All pressure ports test good and solenoids seem to be working
Transmission is a reman with less then 200hrs
Anybody have any ideas or something else I should check?
Also have removed screen and its look normal. Fluid is the right color and doesn't smell burnt.
Have access to SIS and ET

 

[Nige]

Did the problem come on suddenly or has it been getting steadily worse for a while..?

 

[Fowjacob]

Operator said it happened all the sudden but there is no telling

 

[Nige]

From the gears you say are working it appears as though three clutches in the transmission are not engaging - #2, 4, & 5.

If there was nothing relating to burned clutch material in the screen then the first thought would be electrical although the lack of diagnositc codes is somewhat puzzling.
Try exchanging the solenoid valves between #3 and any of the other clutches that are not currently engaging.
If the problem is electrical & external to the transmission then nothing should change.

For example if the #2 solenoid valve is dodgy (because right now #2 clutch is not engaging) then by moving the bad solenoid valve to the #3 position and replacing it with the good one currently installed in #3, instead of the gears you have now (1F,5F,1R,4R) you should get the same two forward speeds that you are getting now (1F, 5F) but no reverse gears at all because #3 is the reverse clutch.
The table below shows which solenoids operate which speed. Because this is a countershaft transmission it requires three clutches to engage in order to select a particular speed.

 

[Nige]

Here's the layout of the solendoids 1 through 8 on the transmission control valve.

 

[Nige]

Here's another thought. There are two screens on that transmission. Which one did you pull for inspection..?

 

[Fowjacob]

Suction screen is the only one i pulled will give solenoid swap a try in the A.M.
Thanks

 

[Nige]

There are two suction screens, one is the suction from the differential housing and that’s the one that usually accumulates the clutch material if there is anything to find. It’s more difficult to remove than the transmission suction screen which is why people tend to forget/ignore it.

Which screen did you remove, #1 or #2..?

 

[Fowjacob]

Where would it be located the one i took off is the one that bolts to the pump and sucks from diff housing

 

[Fowjacob]

Would i still be getting pressure at the ports if the solenoid or solenoids failed?

 

[Fowjacob]

I removed number 2 sorry didnt see your post before replying

Its had some shavings on the magnet but nothing out of the norm

 

[Nige]

Behind #1 is where most of the burned clutch materail will be if there is any. Might pay you to take a look. To paraphrase IKEA - "some disassembly may be required"

 

[Fowjacob]

Will do first thank in the morning and will report back.
Thanks alot for your help!!

 

[Fowjacob]

That’s the transmission one

 

[Nige]

No signs of a major catastrophe there.......

On to changing solenoids around and see what happens. BTW the view of the solenoids in the post above is from the front of the machine looking towards the back.

 

[Fowjacob]

Changing out The Whole valve correct not just the solenoid?

 

[Nige]

Correct. IIRC they are only held in with one Allen screw. Take care removing them so as not to damage the o-rings on the valve stem.

Question: Is your machine Serial Number above or below 2392..?
I'll send you an electrical schematic but I need to get the correct one for your machine. There was a change in electrical system from machine 2ZK02392 onwards.

 

[Fowjacob]

2ZK05654
Looks like Allen screws hold in the whole bank of solenoids 1,2,3,4/5,6,7,8

 

[Nige]

Sorry, my mistake. If you remove the solenoid coil the body of each valve can be unscrewed from each of the two housings that holds four solenoid valves. See the illustration below. Remove the nut #3 and then slide the solenoid coil off the valve stem. Then put a wrench on the hexagon on the valve body and screw it out.

Double check to make sure that the electrical connections don't get mixed up.

 

[Fowjacob]

Swapped solenoids around and no changes

Output speed is showing good and no code. All test ports testing perfect in each gear.
Im thinking internal?