acmoc

ACMOC Membership Benefits

  • FREE quarterly magazine filled with content about antique Caterpillar machines
  • FREE classified listings
  • ACMOC store discounts and specials
  • Full Bulletin Board Access
    • Marketplace (For Sale/Wanted)
    • Technical Library
    • Post attachments

$40 /year ELECTRONIC

$55 /year USA

$67 /year International

Fine Bolt Thread Fastners on 1943 D2

More
1 month 3 weeks ago #224106 by Farrier
So I received my D2 in multiple pieces..... and a bucket full of bolts. All those bolts in the bucket are pretty well rusted but I've spent the last several days soaking in vinegar, wire brushing, then more soaking and finally ending up in my re-loading tumbler to finish off. Most of them look really good. In this bucket of bolts are some fine threads. Can anyone tell me where on a D2 that these would go?

Thanks

Please Log in or Create an account to join the conversation.

More
1 month 3 weeks ago #224107 by Rome K/G
Front timing gear cover used several, parts book will indicate which[fine/coarse] are used also.

Please Log in or Create an account to join the conversation.

More
1 month 3 weeks ago #224112 by edb
Hi Team,
have just added this selection of standard fastener charts from a Cat One Safe Source.

www.acmoc.org/bb/discussion-d72/27472-ca...r-standard-fasteners

Hope this helps.
Cheers,
Eddie B.
The following user(s) said Thank You: Farrier

Please Log in or Create an account to join the conversation.

More
1 month 3 weeks ago #224113 by Farrier
That cat parts book I have which is appropriate for my D2 shows bolts, washers etc but it doesn’t give specifics on fasteners. This book covers serial # 3J5001 - 3J8600 which is within range of what I’m working on. I’m a total newbie though, so I’m open to suggestions.

Please Log in or Create an account to join the conversation.

More
1 month 3 weeks ago #224116 by Neil
Some of the studs use UNF on one end - I think the pony cylinder head studs do. The nuts retaining the mag. Others will come to me over time

Cheers,
Neil

Pittsford, NY

Please Log in or Create an account to join the conversation.

More
1 month 3 weeks ago - 1 month 3 weeks ago #224118 by Cat Yellow1
I believe the 4 capscrews that hold the diesel air cleaner assembly onto the intake tube are fine threads on the D2.
Last edit: 1 month 3 weeks ago by Cat Yellow1.

Please Log in or Create an account to join the conversation.

More
1 month 3 weeks ago #224120 by Deebo
Oil cooler on a D4 has UNF..

I've found that you can decode the fastener part no. using this old doc.

www.tractorparts.com/PDFs/ACCESSORY_AND_...LOG_1937THRU1944.pdf

Fastener part nos towards the end.

Please Log in or Create an account to join the conversation.

More
1 month 2 weeks ago #224186 by trainzkid88
all caterpillar equipment built after 1920 will be made with SAE threads which are unc, unf, uns and npt and nps.

you will probably only find unf and unc threads used with npt on pipe fittings.

be careful with pipe fittings as bsp fittings are the same threads per inch but the thread angle is different and it will not seal. any fuel fittings should use the npt(gas) type fittings for safety reasons. they are finer tolerance than normal fittings.

Please Log in or Create an account to join the conversation.

More
1 month 2 weeks ago #224187 by trainzkid88

Neil wrote: Some of the studs use UNF on one end - I think the pony cylinder head studs do. The nuts retaining the mag. Others will come to me over time



the hold down studs for the pony are like this too many studs were made this way on lots of machinery. a fine thread for the nut end allowed better torquing down as a course thread could be too tight or too loose.

Please Log in or Create an account to join the conversation.

Time to create page: 0.132 seconds
Go to top