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Just purchased a HD4.
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Joined: 28 Apr 2022
Location: Michigan
Points: 20 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Vetter Quote  Post ReplyReply Direct Link To This Post Posted: 30 Apr 2022 at 2:39pm
Originally posted by Ray54 Ray54 wrote:

AC used sealed only grease every 1000 rollers rollers back as far as the 1950's. So I would not have expected them to do any less on your little guy.

 That's good to know.
 But the only reason I ask is the Operation manual and shop manual both say they are greaseable and need to be done every 100 hours?
 So I'm assuming if they are sealed they need to be removed then dismantled every 1000 hours?
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Joined: 22 Nov 2009
Location: Paso Robles, Ca
Points: 4760 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Ray54 Quote  Post ReplyReply Direct Link To This Post Posted: 30 Apr 2022 at 12:59pm
AC used sealed only grease every 1000 rollers rollers back as far as the 1950's. So I would not have expected them to do any less on your little guy.
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Joined: 28 Apr 2022
Location: Michigan
Points: 20 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Vetter Quote  Post ReplyReply Direct Link To This Post Posted: 29 Apr 2022 at 5:34pm
Originally posted by DMiller DMiller wrote:

Rails have no lube, Rollers under MAY have had when new, replacements not so much.  Rails for these are unobtainable.

 Yes, the rail pins wouldn't. I think the rails look pretty good, there seems to be alot of material remaining.
 The tensioner and front shims for the idler pulley has a few loose and missing bolts.
 Good to know about the roller pins, thanks for the information.
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Joined: 14 Sep 2009
Location: Hermann, Mo
Points: 34288 		Post Options Post Options   Thanks (1) Thanks(1)   Quote DMiller Quote  Post ReplyReply Direct Link To This Post Posted: 29 Apr 2022 at 4:37pm
Rails have no lube, Rollers under MAY have had when new, replacements not so much.  Rails for these are unobtainable.
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Joined: 28 Apr 2022
Location: Michigan
Points: 20 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Vetter Quote  Post ReplyReply Direct Link To This Post Posted: 29 Apr 2022 at 4:00pm
Hi everyone, I just purchased a HD4 crawler, believe to be a 71 or 72. 
  I need to do alot of work to the track, the right side came off yesterday. I got it on today but found alot of looseness which I will have to address. I think the PO had the track too tight which caused alot of binding.
 One odd thing is I can't find any grease fittings for the track rollers, the manual I have with it says there's button head fittings on the pins, but nothing is there. I didn't think these early models would of came with sealed rollers, or could someone of modified these?
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