Search found 27 matches

by Sabaro
Sat Feb 02, 2019 11:13 am
Forum: Late model JD crawler technical support
Topic: 1977 JD 450c Loader has no power in reverse
Replies: 46
Views: 36712

Re: 1977 JD 450c Loader has no power in reverse

Snookdoc, sorry for not seeing your questions sooner. It winter time and we have the ole girl covered up (winterized). I was able to get the clutch free play adjusted back to spec. Also I trans oil pressure close to spec psi. The trans was shifting H/L/R and had power. However the shift from R to H/...
by Sabaro
Sat Aug 25, 2018 10:40 pm
Forum: Late model JD crawler technical support
Topic: 1977 JD 450c Loader has no power in reverse
Replies: 46
Views: 36712

Re: 1977 JD 450c Loader has no power in reverse

Update.... I'm still having issues, with power in reverse. Here's what I've done thus far: 1) I adjusted the clutch free-travel" from 4-1/4" to 3-3/4". 2) Adjusted the H/L/R linkage stop nut in until the clutch peddle just starts to lift off of the stop, then I backed the stop nut off 5 full turns. ...
by Sabaro
Tue Aug 07, 2018 11:42 pm
Forum: Late model JD crawler technical support
Topic: 1977 JD 450c Loader has no power in reverse
Replies: 46
Views: 36712

Re: 1977 JD 450c Loader has no power in reverse

DrLoch & psprague, Thank you both for sticking with me. psprague I totally understand your shifting now. Thanks for the clarification. DrLoch, I totally blew it. I removed the rubber plug on top/left side of clutch housing and turned the nut in the hole thinking it was the pressure adjustment. I wen...
by Sabaro
Sun Aug 05, 2018 11:47 pm
Forum: Late model JD crawler technical support
Topic: 1977 JD 450c Loader has no power in reverse
Replies: 46
Views: 36712

Re: 1977 JD 450c Loader has no power in reverse

I checked the clutch today and found free play at 4-1/4" of travel. I adjusted the clutch to 3-3/4" of travel and the trans pressure went up slightly to 174psi. prior to adjusting the clutch the pressure was at 169psi. The rpm's were set to 1500rpm and the transmission pressures for H/L/R were as fo...
by Sabaro
Sun Aug 05, 2018 9:13 am
Forum: Late model JD crawler technical support
Topic: 1977 JD 450c Loader has no power in reverse
Replies: 46
Views: 36712

Re: 1977 JD 450c Loader has no power in reverse

DrLoch and psprague, Thanks for responding. I'm reposting my last post because I'm not sure I was clear in what I was trying to say. I have not made any adjustments to the clutch or line pressure as of yet. The loader is having troubles moving in L and R gears. H gear seams to be alright. First test...
by Sabaro
Wed Aug 01, 2018 6:47 am
Forum: Late model JD crawler technical support
Topic: 1977 JD 450c Loader has no power in reverse
Replies: 46
Views: 36712

Re: 1977 JD 450c Loader has no power in reverse

Ok finally got the plug out with an easy out. Dang that little plug was in there tight. Finding neutral (between 3rd & 4th gear) on the transmission. 1st and 2nd gear seam to line up with the markings on the housing but 3rd, N, & 4th I’m guessing by putting the shuttle in gear to see if tractor move...
by Sabaro
Tue Jul 31, 2018 7:54 pm
Forum: Late model JD crawler technical support
Topic: 1977 JD 450c Loader has no power in reverse
Replies: 46
Views: 36712

Re: 1977 JD 450c Loader has no power in reverse

The HLR 1/8” npt plug is stuck and starting to round out the hex head. Any tricks to the trade to get it out before I totally strip it?

Thanks Sabaro
by Sabaro
Sun Mar 25, 2018 9:24 pm
Forum: Late model JD crawler technical support
Topic: 1977 JD 450c Loader has no power in reverse
Replies: 46
Views: 36712

Re: 1977 JD 450c Loader has no power in reverse

So I can’t find my 200psi test gauge so I need to get a new one to complete the transmission psi test. My dad was exercising the tractor yesterday and the dang trans started working kind of like it’s suppose to. He was getting full power while in reverse most of the time. On the few occasions that i...
by Sabaro
Fri Mar 23, 2018 6:21 am
Forum: Late model JD crawler technical support
Topic: 1977 JD 450c Loader has no power in reverse
Replies: 46
Views: 36712

Re: 1977 JD 450c Loader has no power in reverse

Thanks for the write up DrLock. I will check Transmission psi tomorrow and post results. It looks like the psi test port is 1/8npt?

Thanks Sabaro
by Sabaro
Wed Mar 21, 2018 6:30 am
Forum: Late model JD crawler technical support
Topic: 1977 JD 450c Loader has no power in reverse
Replies: 46
Views: 36712

Re: 1977 JD 450c Loader has no power in reverse

I've been reading Tech Manual TM1102, and in the back there is a section called system testing. Within this section there are groups and power group happens to be 70, and subsection or page 20-5 talks about troubles and possible solutions for the H/L/R and steering clutches. I see there is a heading...
by Sabaro
Tue Mar 20, 2018 11:17 pm
Forum: Late model JD crawler technical support
Topic: 1977 JD 450c Loader has no power in reverse
Replies: 46
Views: 36712

1977 JD 450c Loader has no power in reverse

Back in 2013 I used this forum to diagnose a steering problem with the left final drive. As it was pointed out by one of the members We had a hole in the left side final drive clutch pressure line. We replaced it and the tractor was fixed, steering left and right in H/L/R. However last year the trac...
by Sabaro
Sun Sep 22, 2013 11:25 am
Forum: Late model JD crawler technical support
Topic: Adjust steering Clutches
Replies: 3
Views: 4514

have you open the inspection plug in the steering housing, where you adjust the brakes? Our tractor lost the left side steering also and when I opened the plug to adjust the brakes I could hear and see oil spraying. After about 15 sec there was oil coming out the plug hole. One of the members on thi...
by Sabaro
Sun Sep 22, 2013 11:13 am
Forum: Late model JD crawler technical support
Topic: 450b ripper
Replies: 1
Views: 2466

Adding Picture to this forum is a little tricky, I just figured it out myself. You have to join a third party photo viewer site, and upload your photos. once your photos are uploaded there will be a share option that will give you a link to copy and past to your post. This link below will help. Good...
by Sabaro
Sun Sep 22, 2013 10:42 am
Forum: Late model JD crawler technical support
Topic: 1977 JD 450c loader wont turn
Replies: 15
Views: 17037

77' 450c with steering issue

Well Steve You are right I have a hole in the steering pressure line on the left side. It looks like it might be original. The right side looks newer, but I'm going to change it to. The hoses are only $14 each, so it sounds like a no brainer while I'm torn down this far. We are also going to change ...
by Sabaro
Wed Aug 28, 2013 10:19 pm
Forum: Late model JD crawler technical support
Topic: 79 JD 450c track tensioner adjustment?
Replies: 7
Views: 7938

Hey there 450cgreenhorn, have you looked at the linkage that connects to the steering valve under the seat cushion? Did it stop turning to the right all of a sudden? Our 1977 450c stopped turning to the right also. when I opened the left steering housing inspection plug I got oil coming out and I ca...