450 runs but doesn't move at all....
450 runs but doesn't move at all....
Hello everyone.
So my straight 450 dozer has been standing still for the past year.
Now after putting the battery back it started straight away, BUT it doesn't move....... Put it in gear forward Hi, low or reverse, the engine doesn't stall,, just a for a moment I notice a bit lower revs and a bit more smoke.
It is as if the clutch doesn't work.. By move the blade down on the ground there is movement in the under carriage so the breaks don't seem to be stuck, although I have the impression that I can push the break pedal all the way down with a lot less resistance then it used to have.
The gear oil is very milky........
Any suggestions???????
So my straight 450 dozer has been standing still for the past year.
Now after putting the battery back it started straight away, BUT it doesn't move....... Put it in gear forward Hi, low or reverse, the engine doesn't stall,, just a for a moment I notice a bit lower revs and a bit more smoke.
It is as if the clutch doesn't work.. By move the blade down on the ground there is movement in the under carriage so the breaks don't seem to be stuck, although I have the impression that I can push the break pedal all the way down with a lot less resistance then it used to have.
The gear oil is very milky........
Any suggestions???????
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- 440 crawler
- Posts: 124
- Joined: Tue Dec 10, 2013 10:38 am
- Location: Duvall, WA
Thanks for the answer, yes after seeing the oil it was clear that it needed changing.....
Do you know what type and specifications it needs to be? I got the JD manual, but they only talk original JD brand stuff, which I a,, can't get and if I could, b,, would be way more expensive then other brands here.
BUT, is that the cause of not wanting to move.....???? or is the clutch stuck?
There must be someone that can give me his experienced hint........
Thanks, Jeroen www.solane.info
Do you know what type and specifications it needs to be? I got the JD manual, but they only talk original JD brand stuff, which I a,, can't get and if I could, b,, would be way more expensive then other brands here.
BUT, is that the cause of not wanting to move.....???? or is the clutch stuck?
There must be someone that can give me his experienced hint........
Thanks, Jeroen www.solane.info
New replacement from Deere is Hy-Gard.
Lavoy
Lavoy
Parts and restoration for antique and late model John Deere crawlers.
Owner and moderator www.jdcrawlers.com
Owner and moderator www.jdcrawlers.com
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- 440 crawler
- Posts: 124
- Joined: Tue Dec 10, 2013 10:38 am
- Location: Duvall, WA
You most likely have a HLR transmission, which is a "powershift" type transmission that requires clean HyGard or equivalent such as a JD 303 equivalent. The clutch pedal on these is actually attached to a valve on the HLR that is actuated when the pedal is depressed.
Before you try to diagnose HLR problems any further you need to remove the water and replace with clean HyGard as it could affect power as well as shifting between high/low/reverse.
If you have a straight 450 or 450B then your steering clutches are mechanical rather than hydraulic and have nothing to do with the fluid except maybe power steering assist.
Before you try to diagnose HLR problems any further you need to remove the water and replace with clean HyGard as it could affect power as well as shifting between high/low/reverse.
If you have a straight 450 or 450B then your steering clutches are mechanical rather than hydraulic and have nothing to do with the fluid except maybe power steering assist.
(1) JD Straight 450 crawler dozer with manual outside blade; (2) JD 2010 diesel crawler loaders; (1) JD 2010 diesel dozer with hydraulic 6-way blade; (2) Model 50 backhoe attachments, misc. other construction equipment
Thank you all for the replies..... When I bought the 450 last year, it had a gearbox problem, not wanting to shift from 3-4, That didn't matter to me I would not just be driving around with it anyway, got about 5 miles of dirt road to maintain from our property down to the tarmac, so would just be moving it while working....DrLoch wrote:Have you tried moving the gear selector? When I was adjusting the clutch valve and I had the gear selector in neutral when I shifted from forward to reverse and visa versa the motor would briefly load.
The case is that someone has pushed it into 4th gear while it was parked..... and I never tried that gear, since it was not going easily in it......so this problem is solved, it moves now again ( in 1st 2nd and 3rd ) and I can change all oils and filters this week. So back on the job
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- 440 crawler
- Posts: 124
- Joined: Tue Dec 10, 2013 10:38 am
- Location: Duvall, WA
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