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post #31 of 72 Old 07-10-2019, 07:25 AM
jrd
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Re: 1949 L Gravely

Re oil filter, my attempts to clean those old cannister filters have involved back-flushing with gasoline. It's messy and not fast. Those filters were never designed to be cleaned, just toss it and replace. Can't do that now because they're NLA

I should note that there's nothing preventing you from finding an adapter and changing it over to spin on. Many of these units have been updated that way. I haven't done a couple of my older units, because I like the idea of keeping them stock if I can.

If you update the oil filter, pay attention to the oil line plumbing. There's lots of good info here and on the gravely manuals site about that.

All that said: I'd ignore anything to do with the oil filter while you're getting it running. It's a bypass system; the main output of the oil pump goes to the main bearing and the return line at the front clutch pack. Only bypass oil goes through the filter; if the filter is totally clogged, it's still pumping oil to the rest of the machine. Make sure there's enough oil in it, then put that set of issues aside until you have the rest sorted out.

You haven't said *why* you think it's running hot. It's an air-cooled engine, it's never going to be put-your-hand-on-it warm while running. Is it so hot you can't get near it? Smoke coming off the jug? Off the case? What are the symptoms?

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post #32 of 72 Old 07-10-2019, 07:43 AM Thread Starter
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I have spent most of my life wrenching on junk, but everything newer than 49. I felt it was too hot because I could feel the heat off of the engine almost 2’ away. Yes the jug and head were smoking. But I did spray various things around the machine and de carbonized the head and jug. I am almost sure the carb had it running lean. I will attempt the tedious oil filter cleaning and see if I can get decent results.
Everybody here has been very helpful, thank you all.
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post #33 of 72 Old 07-10-2019, 03:20 PM
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Re: 1949 L Gravely

Need more gravely information?? https://gravelymanuals.com/docs/idex.html.orig
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post #34 of 72 Old 07-10-2019, 04:04 PM Thread Starter
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Wow that’s great, guess I have more opportunities to get closer aquatinted with my Gravley. Thanks
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post #35 of 72 Old 07-10-2019, 04:21 PM
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Re: 1949 L Gravely

If this is your first "L" with a sulky, be careful mowing on uneven ground or you may start signing soprano.
Leaning into a turn helps also as the sulky has a high center of gravity.
The steering sulky is like an amusement park ride.
Mr. Gravely was a genius at making work seem like fun.
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post #36 of 72 Old 07-10-2019, 10:51 PM Thread Starter
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Thanks for the heads up on the seat, and sulky. I am chomping at the bitt to run this tractor, but I want to make sure it’s serviced and ready to be ran properly. So I will have to wait till I can do everything before I run it for actual duty.
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post #37 of 72 Old 07-11-2019, 03:50 PM
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Re: 1949 L Gravely

When you run it does oil stream appear checking thru breather/filler cap? It won't take long if not for blocked oil system to finish off the engine.
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post #38 of 72 Old 07-11-2019, 03:54 PM Thread Starter
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I pulled the oil filler cap while it was running, and was not prepared for the face full of oil drops that blew out at me, I felt that was an indication of oil moving freely through the system. If that’s an improper assumption, please let me know.
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post #39 of 72 Old 07-11-2019, 04:34 PM
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Re: 1949 L Gravely

Quote:
Originally Posted by 1949 L View Post
I pulled the oil filler cap while it was running, and was not prepared for the face full of oil drops that blew out at me, I felt that was an indication of oil moving freely through the system. If thatís an improper assumption, please let me know.
Nope, that's the expected result

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post #40 of 72 Old 07-11-2019, 08:33 PM Thread Starter
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Took my carb out of the dip today, blew everything out what a difference, put it all back together using a shoe box gasket
(which I am skeptical about, and have never done) it was a time consuming venture, and quite honestly not worth it.
I fully drained the canister oil filter
Which had some nasty looking oil in it.
Tomorrow I am going to flush it out with kerosene, and gas. Do an oil change. Clean air filter, put in new oil. Fill it with non ethenal gas mystery oil additive, cross my fingers and pull the rope. Any other things I should address?

Last edited by 1949 L; 07-11-2019 at 09:06 PM.
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post #41 of 72 Old 07-12-2019, 12:57 PM
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Re: 1949 L Gravely

Do not use oil additives in the L gravely. They may harm yellow metals as well as the clutches. The expected result is confirming there is a oil stream.
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post #42 of 72 Old 07-12-2019, 12:59 PM Thread Starter
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I meant the gas additive to substitute for lead
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post #43 of 72 Old 07-12-2019, 01:54 PM Thread Starter
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What are others here with old machines doing for lead substitute ?
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post #44 of 72 Old 07-12-2019, 02:38 PM
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Re: 1949 L Gravely

Quote:
Originally Posted by 1949 L View Post
What are others here with old machines doing for lead substitute ?
I run Avgas

But it's really not critical. They'll run for years on pump gas with no ill effects.

A thing you can do which is cheap and helpful is run a little MMO in the gas (like maybe 1-2 ounces per tank) I would expect that to mitigate any small amount of valve seat wear. I *know* it helps prevent valves from sticking.

One of the less good design features of the T head is that there's not great lubrication of the valve stems. The engine generally runs cool enough that it won't keep the carbon burned off, so it builds up. Especially if the machine isn't run for a while and stopped with the exhaust valve open, you'll find it's prone to sticking.

'41 L (not running)
'43 L
'44 L
'50 L
'52 L (not running)
'58 LI (not running)
'59 LI
'61 LS
'61 LS
Mutt LS
'62 LI (not running)
'63 L8
'66 L8
'66 C8
'67 C8
'74 Comm 12
'75 C8
'73 812
'74 816
UFT Mountaineer 88E
3 parts/project tractors
Too many attachments
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post #45 of 72 Old 07-12-2019, 10:25 PM Thread Starter
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Ok guys, I changed the oil, cleaned the oil filter canister, reinstalled. cleaned the air filter as best I could, refilled the air filter to the lower bend. Installed the carb at preliminary settings at 1.5 turns out on both the main jet and the idle jet. Put non ethanol gas mixed with MMO. 2 pulls and she started. Went drove it with the sickle bar on disengaged about 5 mins and noticed the exhaust cherry red, adjusted the carb for more fuel on main jet and idle jet. Was able to run it around for about 10 more mins, then discovered the muffler has a hole in it directly towards the engine. Tried to Castles Thrust the bolts, but both snapped anyway. So the muffler is off. Now to get a new muffler. Oh BTW I did engage the sickle for a few mins, it ground a little going in, is that normal?
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