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D-2 track master pin
2 years 5 months ago #238427
by Flathead
D-2 track master pin was created by Flathead
I ordered a new master pin. I received the pin, plugs and corks but the pin is a regular track pin. The part number crosses from 6B5279 to a 8L5560 which is the regular track pin. Is the master pin no longer available? Caterpillar doesn’t have a separate listing for it. Any ideas will be appreciated.
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2 years 5 months ago #238428
by Rome K/G
Replied by Rome K/G on topic D-2 track master pin
Yea that old style is discontinued, Just have to whack the new one in. Clean the pin bosses good and oil them first.
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2 years 5 months ago #238434
by Flathead
Replied by Flathead on topic D-2 track master pin
Thank you, that’s what I’ll do. 👍🏼
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2 years 5 months ago #238435
by Wombat
Replied by Wombat on topic D-2 track master pin
Put the master pin in the freezer, clean the link bosses well lubricate and warm them. Drive the neww pin in with a hammer, please wear a face protective mask in case there is any spalding of the pin and something flies into your eyes etc.
Wombat
Wombat
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2 years 5 months ago #238458
by trainzkid88
Replied by trainzkid88 on topic D-2 track master pin
and use a drift to drive the pin this get the hammer away from the pin so less likely to swell the pin. also a drift is generally made from mild steel a little smaller than the driven pin.
freeze the pin for a couple of hrs and carry it in a ice bucket to keep it cold. if you have access to liquid nitrogen that works very well and is what the pros tend to use. but a ice bucket works too.
freeze the pin for a couple of hrs and carry it in a ice bucket to keep it cold. if you have access to liquid nitrogen that works very well and is what the pros tend to use. but a ice bucket works too.
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2 years 5 months ago #238495
by dpendzic
D2, D3, D4, D6, 941B, Cat 15
Hancock Ma and Moriches NY
Replied by dpendzic on topic D-2 track master pin
I just cleaned and lubed the old link bushings and the new pin tapped right in---I guess some are tight and some loser
D2, D3, D4, D6, 941B, Cat 15
Hancock Ma and Moriches NY
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2 years 5 months ago #238851
by Flathead
Replied by Flathead on topic D-2 track master pin
Okay, so the new pin slipped right in so there is some wear on the chain. I then annealed several pin, drilled and slotted them and sent them off to be heat treated at Garner Heat Treat in Oakland, Ca. They were hardened to Rc 50; about the hardness of an axe. I sent a new pin along with the two so they could determine the hardness. I’ll install one and put it to the test!
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2 years 5 months ago #238856
by neil
Cheers,
Neil
Pittsford, NY
Replied by neil on topic D-2 track master pin
Hi Flathead, are you making new slotted and tapered plug pins, just like the originals? If so, I'll order 4 please! : ) Seriously....
Cheers,
Neil
Pittsford, NY
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2 years 5 months ago #238858
by Flathead
Replied by Flathead on topic D-2 track master pin
The master pin was easy to make. I annealed the pins in my wood stove fire overnight. (I know this method is not the best) Then drilled a 3/4” hole about 1 3/4” deep in each end, the cut the slot with my die grinder. Caterpillar still sells the wedges and corks.I looked up heat treating on the internet, called them, shipped them out and there we go!
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2 years 5 months ago #238881
by neil
Cheers,
Neil
Pittsford, NY
Replied by neil on topic D-2 track master pin
Yes, I have new plugs and corks, just need the pins. I did talk to my guy about making some so this info is useful thanks
Cheers,
Neil
Pittsford, NY
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