John Deere 4100 Brakes Locked?

[pat32rf]

The operating shafts (one on each side) are steel going thru an aluminium housing. The aluminium builds up a bit of corrosion and the external spring will not rotate the shaft back to the off position.
Once a year I put a helper in the seat, crawl under with a hammer and spray lube. The helper pushes the pedal, I spray and tap the spring holder so it rotates back off. Push the pedal again and rotate the shaft while spraying. When one side is free, switch to the other side.
Poor design but like emergency brakes on a pickup, you either use them all the time of they will seize up.... My tractor is hydrostat so I seldom use the brakes. Then I need them to park on an incline and they don't release, or lock the brakes while its on a flatbed and have to free them up before I unload...

 

[DFB]

This parts diagram shows the internal brake view and the linkage shaft

and with the first diagram supplied by Tx Jim you can see the entire setup from pedal to friction disc

 

[pat32rf]

Item #1 is the steel shaft that goes thru the cast aluminium housing. My return spring hooks onto it...

 

[DLTTrekkers]

Similar to the Cararo brakes . The thru-shaft seized up in in the boxhousing. You will have to remove the outer brakepedal and the inner brakepedal ....then move the shaft to the left of the tractor and clean it with emarytape and rebuild all .

 

[DLTTrekkers]

Similar to the Cararo brakes . The thru-shaft seized up in in the boxhousing. You will have to remove the outer brakepedal and the inner brakepedal ....then move the shaft to the left of the tractor and clean it with emarytape and rebuild all .

 

[pastorjeep]

Thanks guys! Mine has a cast iron housing not aluminum, seems the gear drives were steel?

 

[pat32rf]

Put a magnet on them where the shaft goes thru. I believe the 4300 and 4100 have the same housings....They look like steel but....

 

[brorag]

OK. I've got a gear driven 4100 also, and need to replace the brakes. Looking at $1200 if the shop does it. Is this something I can handle if reasonably mechanically inclined?