Search found 6 matches

by Mountainman
Wed May 01, 2019 4:00 pm
Forum: Late model JD crawler technical support
Topic: Brake adjustment 450C
Replies: 1
Views: 3083

Brake adjustment 450C

I need help , New to dozers . Steering on this dozer was getting sluggish so I thought I would adjust the steering brakes. Pulled the plugs on both sides and turned the adjusting wheel to tighten brakes. Now it doesn't want to steer at all ?
by Mountainman
Wed Jun 13, 2018 7:11 pm
Forum: Late model JD crawler technical support
Topic: Hydraulic control valve on 450 C
Replies: 2
Views: 2674

Hydraulic control valve on 450 C

I have another question for all you experts. I have a 1979 450C dozer and trying to get used to it. According to the operator manual this 6way blade is supposed to have a float position if you push the lever all the way forward and stay there until you pull it back. Mine doesn't do this, is there an...
by Mountainman
Mon Mar 19, 2018 4:01 pm
Forum: Late model JD crawler technical support
Topic: Leaky fuel injector pump
Replies: 3
Views: 3108

Leaky fuel injector pump

Has anyone had any experience with fuel leaking around the throttle shaft on the injector pump on a 450 C ? The parts book shows some packing. The shaft seems to have a little play in it. Has anyone tried replacing these packing washers ? I've never had one of these injector pumps off before -- majo...
by Mountainman
Thu Feb 15, 2018 5:23 pm
Forum: Late model JD crawler technical support
Topic: Clutch on JD450C
Replies: 14
Views: 10875

Re: Clutch on JD450C

If I'm reading the responses from you people that obviously know more than me correctly , it sounds like I may have a stuck clutch. If so , how can I "unstick" it ???? The dozer had sat for awhile before I purchased it . How long I don't know!

Mountainman
by Mountainman
Thu Feb 15, 2018 5:11 pm
Forum: Late model JD crawler technical support
Topic: Clutch on JD450C
Replies: 14
Views: 10875

Re: Clutch on JD450C

Thanks for all the ideas , in answer to first response - yes the dozer stops when I push in the clutch.I can't shift 1-4 gears while engine is running , it just grinds gears. I have to shut off engine to select gears.
by Mountainman
Wed Feb 14, 2018 4:39 pm
Forum: Late model JD crawler technical support
Topic: Clutch on JD450C
Replies: 14
Views: 10875

Clutch on JD450C

I'm new to the wonderful world of crawler dozers so try to bear with me if I ask stupid questions. My problem : I recently bought a 450C and its in pretty decent shape I believe , pulls well in all 4 gears , shifts OK in shuttle. The problem is that the clutch disengages the drive but I can't shift ...