4240 no left brake function update (Tim?)
to recap. 1978 4240 Quad 7000 hrs., pulls 8 row planter 100 hrs per yr. no heavy work. Some grain cart duty. Bought new in 78.
Late in spring work we lost function on the left brake.
As advised on here I capped the line from the pedals to the left brake and the pedals then had a firm press just like the a neighbours 4230. I figure the problem is in the rear end.
I wonder about the axle bearings as well so we jacked up the tractor with a dial indicator to measure axle radial play, got .003” play on left side and .007" play on right, measured at the axle housing end . Right side shows slightly leaking seal. Is there a spec for refurbishing the axle? Should this be addressed while we're in there.
So, now we remove the axle housing and inspect/replace the brake piston seals? Any tricky parts to watch for as we go??
Anything else to do while apart???
Any reason to suspect the opposite brake will need service soon??
I have the JD service manual and expect most of the work to be like my 4320 restoreation 8 yrs ago.
thx Ken
to recap. 1978 4240 Quad 7000 hrs., pulls 8 row planter 100 hrs per yr. no heavy work. Some grain cart duty. Bought new in 78.
Late in spring work we lost function on the left brake.
As advised on here I capped the line from the pedals to the left brake and the pedals then had a firm press just like the a neighbours 4230. I figure the problem is in the rear end.
I wonder about the axle bearings as well so we jacked up the tractor with a dial indicator to measure axle radial play, got .003” play on left side and .007" play on right, measured at the axle housing end . Right side shows slightly leaking seal. Is there a spec for refurbishing the axle? Should this be addressed while we're in there.
So, now we remove the axle housing and inspect/replace the brake piston seals? Any tricky parts to watch for as we go??
Anything else to do while apart???
Any reason to suspect the opposite brake will need service soon??
I have the JD service manual and expect most of the work to be like my 4320 restoreation 8 yrs ago.
thx Ken