Iseki TL1900 Workshop/Operators Manuals and Rear Linkage Seized

[Forrestlad]

Hello everyone,

I'm new to the forum - looking for info/experience on Iseki TL1900 or equivalent 4WD tractors.

I'm in need of an operator's or workshop manual and any info or experience of anyone ever having repaired a seized rear linkage. Everything on the tractor works great apart from the main height adjustment arm on the rear linkage. The locking knob by the seat appears seized as does the height adjustment lever to the right of the seat.

Picture just for reference. Any help would be greatly appreciated.

 

[The_Swede]

Japanese import so unlikely to find any manuals (or spares) for that specific model however a very similar one came in to the UK - cant recall exactly but TE3210 rings a bell, unless you find one breaking for spares you will need to cross reference against such models as and when.

As its imported i'd wager that the lift cylinder or other internal part is simply rusted up (paddy field tractors / been stood up on dockside for years), a short sharp shock can do the trick... otherwise top cover off job.

 

[Dave W]

What makes you think the linkage is seized? From your description I'd be more inclined to say the linkage is locked up. Just start taking bits apart and free them off.
They are Mega simple and reliable little tractors. Just use common sense

 

[Forrestlad]

Thanks for those comments. I'd found out it was an import - it has the common Isuzu 3AF1 engine so should be able to get service bits for it. It doesn't really need any other parts, as such. I have been trying to cross reference but it seems that even information for UK models is limited. I'll keep looking. Ransomes Jacobson were helpful, they are looking to send me a manual for another similar model.

Yes, I think something is seized with the main height arms because the lock knob is well and truly solid and the side lever mechanism is connected to the rear end via a cable but there is absolutely no movement in it. I'll whip the rotorvator off and strip the linkage arms.

Is there a top cover to the rear end under the seat/tinwork?

 

[The_Swede]

Yes top cover is under the seat.

The hydraulic lock-off valve is visible under seat on picture you posted, if as you describe you cant turn it i'd suggest giving it some 'persuasion' before taking anything apart, from memory wound out (anti clockwise) allows linkage to work. Once this is definitely open check for free movement where lift lever linkage actually enters the top cover.

 

[Forrestlad]

Great, I'll investigate over the weekend and report back. The valve might 'persuade' - I'll have to grip the shaft rather than the knob (ha.) as I'd be worried the plastic would shear its that tight. Yep, the next port of call will be the side lever. It doesn't look like the rotorvator has been used for a long time so it could be that it is just lack of use as you say. Front 'joystick' loader is brilliant, which is what I bought it for.

 

[Dave W]

What Jason said.
The later models had a screw valve that wound in and out to control linkage drop speed. All the way in was locked up.

 

[Forrestlad]

Yeah, it has the valve, rock solid! Same as the one in the pic, below the seat.

 

[Forrestlad]

Update - I've managed to obtain the operator's and service manuals for the TE3210 from Ransomes Jacobsen. Jason, the tractors are very similar, you were right. Not quite the same but this gives me all of the info I need re stripping the rear lifting mechanism and valves. I've also tracked down the details of the relevant service kits - just need to physically measure my filters to confirm they are correct. Going to service the tractor, use it until October and then investigate and recommission for Spring.

 

[The_Swede]

Its amazing the cr@p I can recall from years ago relative to the recent and important stuff I forget... Glad your making progress!

 

[Mursal]

Just be careful that the rotovator isn't holding it up, especially when you go to take it off ........
You would expect the arms to go down even just a little, when stopped for a while, even if the lock valve is screwed in, due to a little internal wear. If not dropping the internal components must be exceptionally good or its locked up externally.
Nothing visual taking the weight attached to the lift arms on the back?

 

[Forrestlad]

Hi, thanks - no nothing that I can see. There is a separate ram that is working that tilts the rotorvator transversely and when I lift and lower that (which lifts and lowers one end) the main arms stay locked. I will post when I've worked out what the problem is. I'll remove the rotorvator today and see if anything moves, but not expecting it to currently. Cheers.

 

[Forrestlad]

Right, rotorvator is off.

Had a feel of the rear arms and they were free. Started her up and played with the levers, nothing. So I looked at the push arm itself and the levers aren't connected up properly - the push arm is a little stiff but working.

So I moved the push arm by hand and the linkage works up and down perfectly. The speed valve is still seized solid still though. As I say, I'll strip her down this winter and make sure everything is serviced. Overjoyed that the hydraulics are all OK though.

Also flipped the rear wheels to make her a bit wider track. Love the little tractor.

Thanks for everyone's help. Much appreciated.

 

[NorthumberlandFarmer]

Thanks for those comments. I'd found out it was an import - it has the common Isuzu 3AF1 engine so should be able to get service bits for it. It doesn't really need any other parts, as such. I have been trying to cross reference but it seems that even information for UK models is limited. I'll keep looking. Ransomes Jacobson were helpful, they are looking to send me a manual for another similar model.

Yes, I think something is seized with the main height arms because the lock knob is well and truly solid and the side lever mechanism is connected to the rear end via a cable but there is absolutely no movement in it. I'll whip the rotorvator off and strip the linkage arms.

Is there a top cover to the rear end under the seat/tinwork?

Do you know of a source of engine parts for Isuzu 3AF1 engines?

 

[NorthumberlandFarmer]

Thanks for those comments. I'd found out it was an import - it has the common Isuzu 3AF1 engine so should be able to get service bits for it. It doesn't really need any other parts, as such. I have been trying to cross reference but it seems that even information for UK models is limited. I'll keep looking. Ransomes Jacobson were helpful, they are looking to send me a manual for another similar model.

Yes, I think something is seized with the main height arms because the lock knob is well and truly solid and the side lever mechanism is connected to the rear end via a cable but there is absolutely no movement in it. I'll whip the rotorvator off and strip the linkage arms.

Is there a top cover to the rear end under the seat/tinwork?

Do you know of a source of engine parts for Isuzu 3AF1 engines?