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48-52 door hinge pin question

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Old Jan 20, 2019 | 10:06 PM
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48-52 door hinge pin question

I have the doors on using a set of pins I bought on eBay, but they are not long enough to catch both sides of the mirror bracket. They are missing the oil groove and mic out at 0.280ish.

I have a set of NOS pins and a set of DC repros long enough to catch the bracket, with the oil groove, but they seem too big for the hinge. They mic out at 0.285ish.

Would you use a round file file to clean any burrs, primer, rust or get a 0.285 reamer?

CG ford appears to have a set of stainless pins long enough at 0.280, but I would rather stay away from stainless in this application.

Jonathan
 
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Old Jan 20, 2019 | 10:29 PM
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Are you sure they're too big for the hinge? Will the first part of the pin (without the splines) fit in the hole?
 
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Old Jan 20, 2019 | 10:32 PM
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Yes the first part will start but once it hits the groove it binds up. This is fit by hand, I did not strike with mallet.

JB
 
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Old Jan 21, 2019 | 08:50 AM
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They are a notoriously TIGHT fit. I'd give it tap with a mallet and see if it starts down the rabbit hole.
 
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Old Jan 21, 2019 | 09:38 AM
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I think I would chuck head of the pin in a drill and run a little emory cloth up and down the shaft before I ran a reamer through the hinges, unless there was a problem with the hinges. I don't think it would take much to file off .005 to make a smoother fit and keep the doors from binding.
 
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Old Jan 21, 2019 | 02:26 PM
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Did you try fitting it to the door part of the hinge, or the cab part?
 
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Old Jan 21, 2019 | 03:20 PM
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Originally Posted by 3twinridges
Yes the first part will start but once it hits the groove it binds up. This is fit by hand, I did not strike with mallet.

JB
That is the way they are supposed to fit. The serrations keep the pin from turning and hold it in place to prevent it from turning and popping up (and out). Tap into place with a hard faced rubber hammer or pull it down with a C-clamp.
 
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Old Jan 21, 2019 | 05:52 PM
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I think this is a first!
I've been around this board for a little bit of time now and I think this is the first time I've ever seen someone have a problem getting the pins in...LOL

Normally you can't get the little buggers out.

When I did mine I had to "set" them in place with a mallet. One or 2 decent taps usually does the trick

Good luck
Bobby
 
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Old Jan 21, 2019 | 08:03 PM
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Originally Posted by Mixer man
That is the way they are supposed to fit. The serrations keep the pin from turning and hold it in place to prevent it from turning and popping up (and out). Tap into place with a hard faced rubber hammer or pull it down with a C-clamp.
Are the serrations what are being called "oiling grooves"? I have never seen pins with a spiral oiling groove, even tho that would be a great idea.
 
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Old Jan 21, 2019 | 08:39 PM
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Yes the pins were tight in the cab hinge. They appear to be tight in the door hinge but I think that is because of high build primer. I am going to clean then up with a fine round file and give it another go.

Attached are pictures of the pins.


 

Last edited by 3twinridges; Jan 21, 2019 at 08:42 PM. Reason: Missing picture
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Old Jan 22, 2019 | 12:16 AM
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I bought my pins 15 yrs ago from DC I think, they didn't have those oil grooves. That is such an improvement! Almost makes me want to pound out mine and get new ones... almost.
 
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Old Jan 22, 2019 | 12:48 AM
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I have never seen hinge pins with "oil grooves". How is oil supposed to reach the grooves with the head snug against the hinge? I'll speculate they are supposed to hold a graphite grease.
 
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Old Jan 22, 2019 | 09:59 AM
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There are little V-shaped cuts in each of the hinge parts to let you squirt oil into the pins
 
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Old Jan 22, 2019 | 05:15 PM
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Originally Posted by ALBUQ F-1
There are little V-shaped cuts in each of the hinge parts to let you squirt oil into the pins
You're supposed to oil stuff???

 
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Old Jan 22, 2019 | 06:31 PM
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Originally Posted by bobbytnm
You're supposed to oil stuff???
i am going to be facing this soon, hinges all in but have not take the mallet to them yet, I have the grooves and figured some marine grease would be a good application for these pins and stay in the groove for a time,

 
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