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New to me D2 found two drain plugs Missing for Trans or Ax? 2 of them 1/14" ish

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1 month 3 weeks ago #239645 by G2D2
Well I hate to admit I missed this on the inspection I have only run it about 20 minutes but still I wonder how long they have been missing!!  Need t oget one of those cameras on a wire to see up in there.. I did stick my finger in there to feel for metal shavings and only came up with some waxy boogers the gear I felt(passenger side) was a but pitted not too bad I would say a millimeter wide pit max and 1/4 mil deep pockets here and there but smooth not sharp. I have not received my Service manual in the mail yet, does anyone know what these drains are for?  I assume they are sae thread anyone know the bolt size?  Thank you!
 
 
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1 month 3 weeks ago #239647 by josh
Not missing, those plugs are for the steering clutch compartment and are usually left out to allow any oil leaking past the seals to drain rather than soak the steering clutches and brake. Plugs are put in when operating in water or mud deep enough to get into steering clutch compartments.
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1 month 3 weeks ago - 1 month 3 weeks ago #239648 by G2D2
Josh Hallelujah! Thank you, I wonder what I felt up in there It sure felt like a big gear.. Well I am very happy to know that, I am sure I will be doing something With that soon my driver side stick seems to work a lot better without the foot brake than the passenger side,again appreciate the help!
Last edit: 1 month 3 weeks ago by G2D2.

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1 month 3 weeks ago - 1 month 3 weeks ago #239653 by bruce oz
If you replace them , some people drill a hole in the middle and you a spit pin in the hole to keep it open so it can drain
Last edit: 1 month 3 weeks ago by bruce oz.
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1 month 3 weeks ago #239654 by Ray54

Josh Hallelujah! Thank you, I wonder what I felt up in there It sure felt like a big gear.. Well I am very happy to know that, I am sure I will be doing something With that soon my driver side stick seems to work a lot better without the foot brake than the passenger side,again appreciate the help!

We are a world wide organization of miss fits that like Cat and other rust things. With that world wide thing we now have part of us going the wrong way, with your reference of drivers side.   Which also means part of us are standing on our heads. I never have clue which part is right.

Welcome to our little place on the web here. Most any Cat question can be answered from the knowledge here. Some days we do muddy the waters a bunch, but hopefully in the end it is clear. So keep asking until we use terms your understanding.
 

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1 month 3 weeks ago #239657 by trainzkid88
they are npt 1 1/4. all the threads are sae. and any bungs and fittings are nptt or npts. its a good idea to fit bungs that are drilled and fitted with a small split pin to keep dirt and shit out. particularly wasps. the muddies like holes like that to call home. if your not in the states or canada you''l have to get some from a hydrualics joint. the local hardware/ plumbing supplies wont carry npt and will look at you funny if you ask for it.

if you havent already make sure to keep tins over the exhuasts to keep the rain out these pilot start diesels run the pilot engine exhuast through the intake for the main so it works like a big glow plug. and if it get rusty as its only thin you'll dust the main very quickly and wont know about it. it just some thing to check when you have that boroscope camera. proper rain traps are available from the dealers.

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1 month 3 weeks ago #239658 by trainzkid88
you say it turns one side better than the other with out the brake just pulling on the clutch. the clutch releases the drive the brake locks the track making it turn.
there supposed to work in pairs you pull the steer clutch and apply brake at the same time. there probably a little stuck stand on em hard a few times see if it improves. some tractors only turn one way most of there lives and wear more on that side particularly farm tractors. its a real issue with wheeled tractors so much so many farmers removed the bar to lock the pedals together for safety. crawlers not so much but it still happens.

there probably out of adjustment too.

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1 month 3 weeks ago #239662 by dpendzic
Wouldn't hurt to put the plugs in and pour some diesel into each compartment ,run it back and forth a little and then drain all the crud and oil out

D2, D3, D4, D6, 941B, Cat 15
Hancock Ma and Moriches NY

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1 month 3 weeks ago #239682 by PhilC

they are npt 1 1/4. all the threads are sae. and any bungs and fittings are nptt or npts.
 

Didn't we go through this recently about plugs and OM pointed out they are not NPT but UNF? From memory the thread was 2" x 12TPI.

If the hole measures up at 1-1/4" then it definitely isn't 1-1/4 NPT

944A - Machine SN 43A2589 Engine SN 90A284
955K- Machine SN 71J3772 Engine SN 83Z0704
D6 SN's 4R732sp, 5R2724, 5R4832
D8 SN's 15A1254, 15A2287, 15A2723

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1 month 3 weeks ago - 1 month 3 weeks ago #239685 by Rome K/G
Thats for the large drain plugs, engine oil pan, clutch housing, transmission.
Last edit: 1 month 3 weeks ago by Rome K/G.

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