JD 410B Doesn't Move Much On It's Own

1. Any easy things to check that could cause these symptoms (filter change, pressure checks)?
2. Do I need to split the case or front half to replace the clutch pack? If so, how difficult without special tools beside supporting the case halves, ect. (I have a feeling this is what I'm headed for...).
3. Appoximate cost of parts and/or labor - guesses are ok.

Thanks for the help.

Is there a seperate reservoir for the clutch pack/Torque Convertor/Whatever or is it all common will the hyrdualic sump?

Thanks again for any help.

1. Replace both trans filters. Both looked clean with no material/gunk on/in the filter or bowl.

2. Took out Trans Sump screen - looked clean except for a small piece of blue gasket material, 1/4 inch piece of tin foil and an oil soaked ladybug (that's a first!).

3. Started taking apart the reverser mechanism, but stopped for the night.

I will try to get a look at the hydraulic circuit schematics so I can understand how this system works. Also, in regards to the question about a smelly clutch - no, don't recall smelling anything, but that is something to keep in mind.

As always, thanks for all the advice, I'll followup with more after I know more. I just hope I don't have to split this unit in half!

1. The ID Tag says 410-B, Serial #137890T, The cab is indeed square but it does have a rounded roof edge(??). but I've never confirmed the year (just what the seller told me).

2. It is a bit weaker in forward than reverse but either direction isn't impressive as I can't climb a slight hill in either direction.

3. The clutch linkage is (unfortunately) fine. I did put in some more free play just to make sure and still no improvement.

4. I like your thought on the blown gasket in the clutch control valve. I sure could use a web site with some details about that (or see my favorite JD dealer next week). Any chance a plugged filter could cause the symptom?

5. Another observation - once moving you can feel the drivetrain try to lockup, but then slip if more power is applied or the slightest grade is encountered - almost like an automotive sytle Torque Convertor low on fluid....

The loader and hoe are very responsive, although the loader does chatter at times - topping off hydraulic fluid didn't help either (it was low when I bought it). I was out playing around with the hoe and front bucket - no problem with digging power or lifting (albeit the chatter).

I was curious if there was a seperate reservoir for the reverser system? Also, does this unit have a torque converter? (plate does say 410B, which means what years?).

appreciate the quick responses - I'm more curious than ever to figure this out now!

1. Replace both trans filters. Both looked clean with no material/gunk on/in the filter or bowl.

2. Took out Trans Sump screen - looked clean except for a small piece of blue gasket material, 1/4 inch piece of tin foil and an oil soaked ladybug (that's a first!).

3. Started taking apart the reverser mechanism, but stopped for the night.

I will try to get a look at the hydraulic circuit schematics so I can understand how this system works. Also, in regards to the question about a smelly clutch - no, don't recall smelling anything, but that is something to keep in mind.

As always, thanks for all the advice, I'll followup with more after I know more. I just hope I don't have to split this unit in half!

The root cause was a worn roll pin on the crossover tube to the reverser controller. The linkage MUST be adjusted properly to allow the clutch packs to engage (hydraulic pressure). There is some preloading that the linkage/roll pin needs to do to get the reverser to operate correctly.

I was lacking about 10 degrees of rotation which was all it took to dump reverser pressure.

Many thanks to Jonathon and Cannonball for their help. Till the next question.....