Does anyone have any experience with the H-L-R transmission on a JD450 dozer. There seems to be to much lag when shifting from Low to Reverse.
Go to the Yesterdays Tractors crawler forum.www.ytmag.com
Acouple of years ago I had the opposite problem with my 450B. I think it was a Jonathan that told me how to adjust mine. Turned out mine had internal trans problems, so it didn't work. Good luck, Gus.
On the right hand side of the transmission
there is about a one inch plug that takes
a one half inch drive ratchet to remove.
Once you remove it you need a three quarter
half inch drive deep socket to loosen the
lock nut. only back it off half of a turn
or so. then you use a small strait screw
driver and turn in the needle with the
screw driver at small increments to increace
the time of shift or screw it out or
counter clockwise to speed up the change
of shift. I have found it best to find
a screw driver that i can operate in the
hole of the deep socket and hold into place
while I turn the deep socket and retighten
the lock nut finger tight at first and then
use the ratchet with the screwdriver removed
to finish tightening it and then put the
plug back in. I did mine two days ago and
found that one quarter turns worked well.
the manual says you should have about
one and one half seconds betweeen shifts
from foward to reverse or between high to
low. It is a bit of a hassle to have to
keep pulling the plug, unlocking the lock
nut and screwing the needle in a small
amout each time but after you do it a time
or two it's not so bad. Email me if you
have any more questions.
Smiles, do you access this plug from above? Remove the cover your foot rests on? My reverser had gone out. Ended up having the trans rebuilt. Ouch. The guy that did it told me to live with the fact that I had to use the clutch to reverse direction. But not going from low to high or back again. Thanks, Gus
Yes, the plug is accessed by removing the
right hand side foot plate, just two nine
sixteenth bolts and is about one third of
the way down on the transmission, just about
directly under the cross-plate that holds
your hour meter. And no you don't have to
just get used to using the clutch, John
Deere did a good job designing this trans-
mission, it was used from about 1965 on
the first straight 450 crawler dozer, on
the 450b model from 1969 to 1973, the 450c,
"my favorite" from 1973 to 1984, the 450d
from 1984 to 1987 and I'm not sure but I
have heard that the 450e's were still a
direct drive transmission, and if not the
same as the original 450, probabally only
a slight variation. In any event from 1965
to 1987 is 22 years of the same transmission,
with the exception of adding another hole in
the manifold, and case with a metal line,
and a larger imput shaft diameter at the input
bearing, they created a standard that is still
very much sought after today. If you will adjust
your manifold needle valve, which is what you
are doing when you remove the plug and adjust
the screw as outlined in the last post you are
adjusting the speed of shift as described in
the manual for both forward to reverse and
low to high or vice versa. Sometimes one is
just a little faster or slower than the other
but you just have to find the adjustment that
gives you the closest speed to 1 and onehalf
seconds between shifts. The manual says to not
let it become too sluggish or it will glase the
clutch disks. The transmission is extremely
easy to rebuild as long as you have a hydrolic
press, and although the book says to use a
gear puller to remove the cluch packs,
"I nearly smashed my finger trying that one', I
found that useing an 8 inch C clamp with the
excess handle and bolt cut off was a much better
and safer tool for the job. Just an extra for
those of you who read this and are doing the
transmission yourselves. John Deere was
exceptional at giving the mechanics various
ways to use existing tools at their disposal
for special use tools during that era in their
repair manuals. Anyway gus let me know how you
Does anyone know where I can find a good used logging winch with fairleads for a JD 450C dozer?
450 jd dozer when trans gets warm will not shift any ideas bruce
Fairleads for sale $500.00 R&R Repairs Heaters Wv 304-765-2426
Would like to purchase operators and repair manuals for John deere 450e crawler.
jd 450 (h-l-r) wont move. pulled strainer filter out of trans on right side through the tracks, and found a sheared off valve... any ideas? Is this a major reapir, or something (hopefully ) easy?
I have a JD 450 dozer and it won't move when I put into reverse. It does move normally when I put it into high or low. I've pulled the guts out of the transmission and replaced the pistons, piston rings and seals. Put it back together and no change. Any Ideas?
Thanks in advance.
hey i have a jd 450B dozer that has the H-L-R trans in it when i bought it it would move and function normal but when i got it to my house i tryed to get it off the trailer and it wouldnt move the lift and all the hydraulics work but it just wont move. i have replace the clutch and that didnt work any ideas
I have a 450 G John Deere dozer. Was on a steep hillside and got stuck. Turned it off got it off the mountain to level ground and it still won't start. Any ideas?