greenmachine
Member
My 4230 has developed a noise in the rear. I
changed the hydraulic fluid, filter, screen in the
spring when I did axle bearings and seals.. Screen
was completely clean, fluid was clean, opened
filter it was clean. Brakes were perfect on both
sides. I have used it about 150 hours since. When
it gets hot, hydraulic oil that is, I get a
rattle/knocking noise from under my feet/seat. It
doesnt matter if the clutch is pushed in/ or in
gear. This is a quad range. It shifts fine, works
in all gears. Hydraulics seem fine, steering okay,
3pt up and down fine, although it does settle
after an 1hr or so, but has done that along time.
I decided to pull the shaft for the trans pump. It
does has a touch of wear, but nothing I would
consider terrible. Is it possible for the pump to
rattle when the fluid gets hot. I looked on
JDparts.com and didnt really see anything in the
pump like a bushing that would do that. The noise
does change when I used hydraulic functions, gets
quiet when I lift up and implement. That is why I
am leaning towards a new pump and shaft. But on
the flip side dont want to waste my time. One
other strange thing that has developed now that is
is cooler at night. The pto will run for about 45-
60 seconds when I first start it. I check the
linkage and it is returned all the way, and
nothing is stuck under the rod. I bought this
tractor new and was planning on keeping it around
for misc use. But its starting to become a pita.
Thanks for any insight.
Joe
changed the hydraulic fluid, filter, screen in the
spring when I did axle bearings and seals.. Screen
was completely clean, fluid was clean, opened
filter it was clean. Brakes were perfect on both
sides. I have used it about 150 hours since. When
it gets hot, hydraulic oil that is, I get a
rattle/knocking noise from under my feet/seat. It
doesnt matter if the clutch is pushed in/ or in
gear. This is a quad range. It shifts fine, works
in all gears. Hydraulics seem fine, steering okay,
3pt up and down fine, although it does settle
after an 1hr or so, but has done that along time.
I decided to pull the shaft for the trans pump. It
does has a touch of wear, but nothing I would
consider terrible. Is it possible for the pump to
rattle when the fluid gets hot. I looked on
JDparts.com and didnt really see anything in the
pump like a bushing that would do that. The noise
does change when I used hydraulic functions, gets
quiet when I lift up and implement. That is why I
am leaning towards a new pump and shaft. But on
the flip side dont want to waste my time. One
other strange thing that has developed now that is
is cooler at night. The pto will run for about 45-
60 seconds when I first start it. I check the
linkage and it is returned all the way, and
nothing is stuck under the rod. I bought this
tractor new and was planning on keeping it around
for misc use. But its starting to become a pita.
Thanks for any insight.
Joe