JDcrawlers Messageboard

I was referring to a decelerator, I saw it referred to as a foot throttle while searching online. I wasn’t sure of the official name. Would having a decelerator be beneficial enough to make one for a 450B dozer? I have had a 450B loader for 10 years and not much need to adjust the engine rpm on it a...

Did any of the early 450’s come with a foot throttle or as a add on?

Is loud gear whine normal in reverse for a 450B?
I bought this machine in pieces, I rebuilt everything but, this is
The first 450 I have ran so I am not sure what to expect.

My 450b has the serial mumber stamped in the top of the trans/ring and pinion housing at the very back. There is also another set of numbers Back there that are measurement from when the Ring and pinion were set. I think the serial number is on the right of that housing and the other numbers are on ...

I am rebuilding a 450b loader. I am test running the Engine and transmission with it on jack stands. The sprockets and tracks are off so there is no load on it while testing. While running at Low rpm (800) and the H L R in forwards or reverse there is gear noise but it goes Away when I rev it up som...

Pulled the engine back off and adjusted The clutch fingers a little Put the engine back on and with the Clutch adjustment bolt ran all the way Down the throw out bearing just touches the fingers when pedal Is all the way down and the free travel is way too much If I put a three quarter inch spacer u...

I am going through the same issue
now also I am rechecking the clutch
finger height again today
Jim

If I loosen the top two
frame rail to steering clutch housing on both sides until there is a 1/16
gap at the top I can get the holes lined up by jacking up the bell housing.
Any idea what could be causing this?

Well been working on this thing off and on for about a year now.
Today I installed the new frame rails and with all frame bolts tight
the bell housing bolt holes are about 3/8" low.

I finished rebuilding the reverser, sleeved the clutch oil manifold and replaced All o-rings and seals in the hydraulic system. I wanted to test it before I put the covers on so I made an adapter to spin the input shaft with a air drill. This is where my questions come in. When I spin the input shaf...

I am new to this message board and new to JD crawlers also. My name is Jim and I live in middle TN. I bought a 450B project a few weeks ago. The motor has been out for about 20 years and it needs frame rails and a lot more. I already bought frame rails and rebuild kit for the engne. Today I pulled t...