Search found 593 matches

by Jim B
Sun May 06, 2018 5:25 pm
Forum: Early model JD crawler technical support
Topic: jd440ic charging issues & hyd cyl issues
Replies: 103
Views: 11710

Re: jd440ic charging issues & hyd cyl issues

Hi, I agree your cylinder bores could be worn more in some areas than others and have some bypassing in spots. You said you didn’t think you raised the blade all the way up when you cycled it. First cycle the cylinders fully up and down a number of times to clear any air from them. Shut your machine...
by Jim B
Sun May 06, 2018 12:55 pm
Forum: Early model JD crawler technical support
Topic: jd440ic charging issues & hyd cyl issues
Replies: 103
Views: 11710

Re: jd440ic charging issues & hyd cyl issues

I agree with Stan that has been my method as well, a few full strokes and they will be fine.
by Jim B
Sun May 06, 2018 6:39 am
Forum: Early model JD crawler technical support
Topic: jd440ic charging issues & hyd cyl issues
Replies: 103
Views: 11710

Re: jd440ic charging issues & hyd cyl issues

Good morning, Glad to hear things advanced on your repairs. A gauge installed in one of the plugged ports at the end of a lift cylinder will tell you the pressure in the circuit when full pressure is applied to and the cylinder is at the end of its stroke, at full throttle. It should be the same at ...
by Jim B
Sat May 05, 2018 7:40 am
Forum: Late model JD crawler technical support
Topic: JD 350b track off problems
Replies: 7
Views: 1074

Re: JD 350b track off problems

Be careful not to loose the check ball located under the screw beside the grease fitting, if that is what you are calling the plug you removed. Don't know how big a com-a-long you have but it may not have pull enough for this job. Do you have a blade on your machine? If it is a hydraulic 6-way, you ...
by Jim B
Sat May 05, 2018 5:36 am
Forum: Early model JD crawler technical support
Topic: jd440ic charging issues & hyd cyl issues
Replies: 103
Views: 11710

Re: jd440ic charging issues & hyd cyl issues

Morning, Glad to hear you got the cylinder done. Does the blade hold and not drift down now that you have both cylinders refreshed? When you get the levers and tubes fixed up be sure the levers and any linkages are moving the valve spools their full stroke. If the pins and holes are worn or any rods...
by Jim B
Fri May 04, 2018 4:47 am
Forum: Early model JD crawler technical support
Topic: jd440ic charging issues & hyd cyl issues
Replies: 103
Views: 11710

Re: jd440ic charging issues & hyd cyl issues

I pulled the lift cylinders on my # 62 blade apart in place, with the cylinder pinned it was held while I worked on it. I don't know how much easier it is but it holds the cylinder some as you work on it. With the blade on the ground I put a pan under the rod end of the barrel to catch the oil. You ...
by Jim B
Thu May 03, 2018 6:57 pm
Forum: Early model JD crawler technical support
Topic: jd440ic charging issues & hyd cyl issues
Replies: 103
Views: 11710

Re: jd440ic charging issues & hyd cyl issues

The fact that the blade lifts up says the pump is working; as Lavoy noted in an earlier post. You should be able to get a pressure reading anywhere between the discharge of the pump and the main relief valve. I would put a gauge into one of the plugged ports of the lift cylinder, you mentioned befor...
by Jim B
Thu May 03, 2018 4:53 pm
Forum: Early model JD crawler technical support
Topic: jd440ic charging issues & hyd cyl issues
Replies: 103
Views: 11710

Re: jd440ic charging issues & hyd cyl issues

Good evening, Lavoy might have a source for the cylinder tubes or a source for tube stock. If not, an outfit like one of the Parker Hannifin stores or other good hydraulic shop (Triad Technologies is a Parker dealer out near you I believe), might be able to help you. Some machine shops will get tube...
by Jim B
Thu Apr 26, 2018 12:00 pm
Forum: Late model JD crawler technical support
Topic: 450c hot hydraulic reservoir
Replies: 4
Views: 1034

Re: 450c hot hydraulic reservoir

Your hydraulic temperature may not be as bad as it seems. I think JD gives and operating range temp of 150 to 180 degrees. A rule of thumb used by many is 100 degrees over ambient temp. Either way it will be uncomfortable to the touch, to say the least. Check it with a non-contact thermometer (heat ...
by Jim B
Wed Apr 25, 2018 11:45 am
Forum: Early model JD crawler technical support
Topic: jd440ic hyrdraulic pump rebuild kit
Replies: 13
Views: 2220

Re: jd440ic hyrdraulic pump rebuild kit

Going by memory the hoses to the cylinders on the (430C) 62 blade attached on the side of the base on the left cylinder and there were two plugged ports on the end of that cylinder when you looked at it when sitting in the seat. I think the hoses on the right cylinder base used all four ports as the...
by Jim B
Wed Apr 25, 2018 11:19 am
Forum: Late model JD crawler technical support
Topic: Winch identifications jd 350
Replies: 5
Views: 977

Re: Winch identifications jd 350

That is where those number show up. Go to JDparts: Homepage and you can research further. Enter your model number; I picked a 350 crawler tractor based on your post title and looked at the winches; they show two the 3310 and the 3315. I did a search for T19800 for the 3310 and it didn't come up, tri...
by Jim B
Wed Apr 25, 2018 11:05 am
Forum: Early model JD crawler technical support
Topic: jd440ic hyrdraulic pump rebuild kit
Replies: 13
Views: 2220

Re: jd440ic hyrdraulic pump rebuild kit

To test the pressure (strength), I don't know if there is a test port on your machine or not but you can always get a Tee and a few fittings and add a test port into the pressure line coming from the pump to the valve (or into a hose going to a cylinder port) to check pressure. Get hydraulic fitting...
by Jim B
Wed Apr 25, 2018 10:38 am
Forum: Late model JD crawler technical support
Topic: Winch identifications jd 350
Replies: 5
Views: 977

Re: Winch identifications jd 350

Drop the T suffix off the number and those are numbers for components of a 3315 winch, in looking at JDparts, for winches used on 350's. Is that what you were looking for?
by Jim B
Wed Apr 25, 2018 9:59 am
Forum: Early model JD crawler technical support
Topic: jd440ic hyrdraulic pump rebuild kit
Replies: 13
Views: 2220

Re: jd440ic hyrdraulic pump rebuild kit

If you lift your blade up, let the valve go to center (hold position) and shut the engine off. If the blade drops; it is most likely the problem is in the cylinders, as Lavoy said. A badly scored, or out of center, valve might do it but not as likely, from your description of the problem. I had a 43...
by Jim B
Wed Apr 18, 2018 6:44 am
Forum: Off-topic discussions
Topic: Backhoe weight
Replies: 7
Views: 1113

Re: Backhoe weight

From info I found I would plan for the heavier weight Bruce posted. Some extend-a-hoes had to have front weights, bucket options change the weight, extra plumbing for other attachments, many things come into play on these. Looking at models each side of the 580K; a 580L series shows 13,200 to 15,750...