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Crawlers, Dozers, Loaders & Backhoes Discussion Forum

running temp. of a 318 CAT

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U9 U9 CAT

11-23-2006 13:03:58

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I have a 9U D6 CAT bulldozer with a 318 IT's running at 190 working it hard. And what's the correct way to adj the fan belt? Thanks

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Old Magnet

11-25-2006 08:24:46

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Re: running temp. of a 318 CAT in reply to U9 U9 CAT, 11-23-2006 13:03:58

Oil pressure for the D318 is about 30 psi at normal speed and operating temperature. This would be using straight 30wt oil in moderate climate.

Temperature regulators for the D6 are set to open at 160 deg F. Operating temp will vary with load. Anything below boiling is fair game.

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U9 U9 CAT

11-25-2006 23:38:38

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Re: running temp. of a 318 CAT in reply to Old Magnet, 11-25-2006 08:24:46

I"M a long way from 30 I have no oil cooler Whats the next step OLD MAGNET

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U9 U9 CAT

11-24-2006 19:24:56

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Re: running temp. of a 318 CAT in reply to U9 U9 CAT, 11-23-2006 13:03:58

no tools, I think Your in a differnt leage than me.
I't seemed like that It was a little hot 190

My oil pessure droped today, it normaly runs at 19 hot, after running for a hr or two. Today it droped to 12 I stopped and pointed into the wind let it idle, coolant cooled of quikly. But oil psi didn't come up, oil level good I just changed the oil 15 or so hrs ago. Motor had been worked on before I got it. The man I got it from, told me that he did an in frame and rebuilt the oil pump, motor runs strong first time I ran it for any lenght of time she got hot 200 or so leaking cooant I pulled the rad. had it cord out.
Any advice I have no spaner wrench i'll look tomorrow Thanks Mike

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No tools

11-24-2006 22:46:33

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Re: running temp. of a 318 CAT in reply to U9 U9 CAT, 11-24-2006 19:24:56

ON the spaner wrench seen a guy make one by heating a old lug wrench bending it around a pipe or what ever and made like a hook in it.HE bent the hook in it also. usally them upper pullys are not to hard to turn.
HAVE a good one BILL.

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U9 U9 CAT

11-24-2006 23:08:53

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Re: running temp. of a 318 CAT in reply to No tools, 11-24-2006 22:46:33

Thanks for the info I see what you mean about a hook and yes I need to clean out the belly pan.

Thanks again NO tools

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No tools

11-24-2006 22:34:32

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Re: running temp. of a 318 CAT in reply to U9 U9 CAT, 11-24-2006 19:24:56

I am at work tonight. I have to say i am sorry that i missed the fan belt tighting you ask about.
When you said 318 i had a brain lock we have always Knowin the D6 as 3306 or 3406 engines.
ON that engine there Make sure that the bottom pully is not wore so bad that the belt is running in bottom of (THE V).If so it will not pull that fan like it should WE have had that on the big tractor dozers.All though them tractors do run warm on hard work. IF the belly pan is full of debree that makes EVER thing hard to keep cool.
Makes it hard to cool Engine oil transmission hyd and ever thing when one gets hot they all get hot.
hope this give some clues.
Have a good one BILL

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Old Magnet

11-24-2006 07:21:11

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Re: running temp. of a 318 CAT in reply to U9 U9 CAT, 11-23-2006 13:03:58

If you remove the two 5/16 clamp bolts the bolt holes are relieved to accept the pins of a spanner wrench. Do not use a punch to turn the adjustable pulley as it will bugger up the thread clamping feature that Bob (Hi Bob) mentions.

The D318 engine was standard engine used on the "U" series D6 and #12 Grader and others. It was one of Cats finest engines.

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U9 U9 CAT

11-25-2006 06:16:17

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Re: running temp. of a 318 CAT in reply to Old Magnet, 11-24-2006 07:21:11

I would like to lean more about D318, I like the motor it runs strong and is easy to start, if you got the trotal going the right way. Do you know the oil psi old magnet?

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NO tools

11-23-2006 19:15:21

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Re: running temp. of a 318 CAT in reply to U9 U9 CAT, 11-23-2006 13:03:58

U9-U9-Cat
ON the d6 190 degrees i would not be concerned.

I operate D8s---D9s---D10s for a living we push coal with large blades we run them 240-250 in the summer for days on top of days (24 hours) none stop.
Now if they get 260 and boiling out coolant we take some of load off but keep working till back to 240.

WE push them around 210 220 in 30 degree weather.
Yes we'll lose a engine ever 8-10 thousand hours
I have never hurd of the 318.
Bill

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Bob/Ont

11-23-2006 14:00:09

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Re: running temp. of a 318 CAT in reply to U9 U9 CAT, 11-23-2006 13:03:58

That's up at the top end. The fan pulley is threaded and can be tightened together to adjust belt tension. There should be a bolt to loosen and allow the threads to move. There is a cut in the hub and the bolt pinches the threads to lock it. Clean off pully hub and look for it, don't know if it goes in from front or back. Make sure pully half is free don't force things and ruin the threads.
Later Bob

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Elmer

11-26-2006 17:04:45

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Re: running temp. of a 318 CAT in reply to Bob/Ont, 11-23-2006 14:00:09

Hi Bob, the email address i have from you will not work for me. Could you send me an email with your postal address. I want to send you something. Elmer Landman, ejlandman@sympatico.ca

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