Db995 rear linkage

[Exfarmer]

The lift latches do sieze, and it is important not to be too heavy handed with them as they easily break..
when the selectamatic lever is in TCU, the lift will raise when the main lever is both fully back and fully forward.
the selectamatic lever is another part which is frequently broken by improper use

 

[DeanB]

That's one of the things I've already tried, is it a big job removing the lift latch section. Do I need to drain the system to gain access

 

[DeanB]

I've managed to release the lift latch and the linkage now drops under it's own weight in L1, if i select L it raises all the way up and nothing I do with the selectamatic handle does a thing in L1, L,1 or 2 it just wants to lift until I put the 3 way valve back into L1 and then it just lowers on it's own. Does this mean I've more than likely got a problem at the selectamatic handle part of the system.

 

[Boohoo]

I've managed to release the lift latch and the linkage now drops under it's own weight in L1, if i select L it raises all the way up and nothing I do with the selectamatic handle does a thing in L1, L,1 or 2 it just wants to lift until I put the 3 way valve back into L1 and then it just lowers on it's own. Does this mean I've more than likely got a problem at the selectamatic handle part of the system.

I still think there's something wrong with your 3 way valve.

The linkage should lower in L or L1

You previously had a leak at the tipping pipe, which was cured with a new fitting, but there should only be pressure in the tipping pipe when the 3 way valve is in position 2.

If the loader is plumbed into port 1 of the 3 way valve, as is normal, the loader should only work when the 3 way valve is in L1 or 1. If I remember correctly you said that the loader works in every position of the 3 way valve.

 

[DeanB]

How do I identify which port is which on the 3 way valve, I have the service manual but this just shows an exploded view and not the port numbers

 

[DeanB]

Just found this behind the lowering control knob under the right hand door, looks like I might have found the problem, I've just got to find something to replace the missing parts. I've also tried to manually push the rod to see if the links would lower but oil came out of the side circled on the picture. It just seems like a plain hole, no thread for a bolt?

 

[Selectamatic]

Hmmmm... who’s been mucking about in there?! ?

 

[DeanB]

Anyone know what I fill the hole with just to the left at the end of the cable tie, is it just a rubber bung, looks like about 10mm

 

[Selectamatic]

Hmmmm... who’s been mucking about in there?!

 

[Boohoo]

How do I identify which port is which on the 3 way valve, I have the service manual but this just shows an exploded view and not the port numbers

Port 1 is the top port
When you're looking under the cab at the ports on the valve, position 1 is the lever fully to the right, then working left, towards the gearbox you've got position 2, then L and finally L/1.

 

[Boohoo]

Just found this behind the lowering control knob under the right hand door, looks like I might have found the problem, I've just got to find something to replace the missing parts. I've also tried to manually push the rod to see if the links would lower but oil came out of the side circled on the picture. It just seems like a plain hole, no thread for a bolt?View attachment 851798View attachment 851799View attachment 851800

Here's a picture from the online parts catalogue of what should be in there

 

[DeanB]

Looks like from the picture all I'm missing is a nut and some small washers but I'm still baffled as to what comes out the side shown with the cable tie I threaded through just for illustrative purposes

 

[Boohoo]

Anyone know what I fill the hole with just to the left at the end of the cable tie, is it just a rubber bung, looks like about 10mmView attachment 851806View attachment 851807

That hole is in the rear axle casing rather than the drop rate control casing isn't it? There isn't anything showing in the parts catalogue but I'll get a look at our 996 next week.

 

[DeanB]

That's right cheers

 

[Boohoo]

Looks like from the picture all I'm missing is a nut and some small washers but I'm still baffled as to what comes out the side shown with the cable tie I threaded through just for illustrative purposes

Are you missing pin 37, collar 40 and the lock nut also 40? The lock nut is 5/16 unc.

 

[Boohoo]

Link to the parts catalogue, it might be useful.
You don't have to register, just work your way through the menus selecting tractors, then agricultural, then David Brown and you'll find the 995 catalogue.

MyCNHi Store | Site Selector

ngpc.cnh.com

 

[DeanB]

Those are the parts I'm missing but i should be able to get bits like that out of my bits box

 

[DeanB]

Anyone know where I can get the washer highlighted I think it's got a central hole for the ball bearing and 3 hole surrounding it. It would be a shame to have to buy a full valve just for this

 

[Exfarmer]

I think those are matched parts and cannot be swapped

 

[DeanB]

Anyone know where to get a new unit as I've searched the usual places and haven't found much