John Deere 2120 Brake Concern

[Tx Jim]

Ditto I think valve(key 3) is the problem also. AL70242 Pneumatic Control Valve 69.10 USD 0

 

[Tx Jim]

O-ring(key 14) only seals plug(key 13). If plug isn't leaking o-ring is fine.

 

[bigblock76]

Ditto I think valve(key 3) is the problem also. AL70242 Pneumatic Control Valve 69.10 USD 0

Should I start with this part then? AL70242 Pneumatic Control Valve 69.10 USD

 

[DLTTrekkers]

Order 2xno 2 and 2x no3...remove no 2 and strip valve....clean all . When assemble make sure no 3 do not touch piston and do not use silicon on gasket...there is a small hole in the gearbox casing allowing oil to fill mastersilinder...after assembling remember to adj the pedals with the 3/8 bolts on top...all pedalfreetravel gone plus 1/3 turn tighter...do not try to adj pedals equal ! Lock 3/8 bolts with there nuts !

 

[Tx Jim]

Ditto what DLTTrekkers stated

 

[bigblock76]

I致e ordered 2 equalizing valves. Waiting for them to arrive.

Is there a way to test the brake linings without taking the axle apart to see how much lining is left?

 

[Tx Jim]

No way to check brake lining thickness other than removing final drives.

 

[bigblock76]

No way to check brake lining thickness other than removing final drives.

Is it worth doing giving age of the tractor and unknown history prior to me owning it? Given the horror stories I've heard about the metal getting everywhere and messing up the pump. Is it hard to service other than needing to take an axle off once your inside?

 

[Tx Jim]

Brake linings are relatively easy to R&R once axle housings are removed. IMHO installing cow magnets in the bottom of older JD tractor trans case of this era is a good idea to help limit hyd components exposure to metal fines.