Search found 1349 matches

by Jim B
Fri May 11, 2018 2:43 pm
Forum: Early model JD crawler technical support
Topic: jd440ic charging issues & hyd cyl issues
Replies: 103
Views: 25634

Re: jd440ic charging issues & hyd cyl issues

Assuming that is a Vickers valve, from what you have posted for numbers, and we have found on the web, it looks to me like it closely resembles what they call their CM line for mobile equipment now. There is an online manual for Vickers CM valves (you may have found this, if you haven't try searchin...
by Jim B
Tue May 08, 2018 5:26 pm
Forum: Early model JD crawler technical support
Topic: jd440ic charging issues & hyd cyl issues
Replies: 103
Views: 25634

Re: jd440ic charging issues & hyd cyl issues

Is the 222627 a number cast on one end section the valve? Did John Deere use Vickers valves? That number shows up in Vickers info when searched. If that is what it is, it appears to be a section of a stack type valve you can add sections to. On eBay there is currently a "pre-owned" single spool valv...
by Jim B
Tue May 08, 2018 11:17 am
Forum: Early model JD crawler technical support
Topic: jd440ic charging issues & hyd cyl issues
Replies: 103
Views: 25634

Re: jd440ic charging issues & hyd cyl issues

Hi,

Perhaps if you would post a few pictures of your valve and control set up it would help find answers to your questions. It sounds like your valve set up is not a standard 440IC valve arrangement. You have one 3 spool valve and normal was two separate valves.
by Jim B
Sun May 06, 2018 6:36 pm
Forum: Early model JD crawler technical support
Topic: jd440ic charging issues & hyd cyl issues
Replies: 103
Views: 25634

Re: jd440ic charging issues & hyd cyl issues

Ok, took a look at the parts books on line. It appears the hoses to the cylinders are all 3/8 NPT. The plugs in the right hand cylinder show as 3/8 NPT. The left hand cylinder shows the plugs as 1/2 NPT. On the valves I can see on line (none are 3 spool) they ran all the hoses back to the valve and ...
by Jim B
Sun May 06, 2018 6:10 pm
Forum: Early model JD crawler technical support
Topic: jd440ic charging issues & hyd cyl issues
Replies: 103
Views: 25634

Re: jd440ic charging issues & hyd cyl issues

A quad ring is like an O-ring but the sides, top, and bottom are hour glass shaped so it looks like lips when installed. The seal for the rod in the gland head is supposed to be an O-ring and separate backup ring/washer in the groove with it. I should clarify the last cups I got were not actual leat...
by Jim B
Sun May 06, 2018 5:33 pm
Forum: Early model JD crawler technical support
Topic: jd440ic charging issues & hyd cyl issues
Replies: 103
Views: 25634

Re: jd440ic charging issues & hyd cyl issues

dtoots,

Just curious as I have seen some strange things get passed over the parts counters lately and it sounded like they gave you a quad ring instead of an O-ring when they matched up parts. Were the cups you had for the cylinder piston leather or a poly-type?

Jim
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: 25634

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: 25634

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: 25634

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: 2336

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: 25634

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: 25634

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: 25634

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: 25634

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: 1881

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 ...