Should I buy a Gravely 816T? - Page 2 - MyTractorForum.com - The Friendliest Tractor Forum and Best Place for Tractor Information
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post #16 of 88 Old 09-25-2019, 06:32 AM
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Re: Should I buy a Gravely 816T?

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Originally Posted by ATLANTIC CENTRAL View Post
GRAVELY never made a 10-G, they did make 12-G and 14-G single cylinder G tractors.........

Sheldon
From the pix, it looks like that tractor was re-engined. Hard to tell exactly what model engine that is, but if it's a K241, I suppose that makes the tractor a 10G

kyavion, that's definitely an Onan 16hp twin, so the tractor's an 816. Looks pretty decent. If it were closer, and I had more time, I might make a pass at it an try to talk the owner down a little.

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post #17 of 88 Old 09-25-2019, 09:21 AM
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Re: Should I buy a Gravely 816T?

816 w/ hydraulic draw bar... price just went up a little.

Also - I'd steer clear of 10 or 12 HP if you plan to mow heavier stuff.
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post #18 of 88 Old 09-25-2019, 04:29 PM Thread Starter
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Quote:
Originally Posted by jj94tt View Post
816 w/ hydraulic draw bar... price just went up a little. <img src="https://www.mytractorforum.com/images/smilies/smile.gif" border="0" alt="" title="Smile" class="inlineimg" />

Also - I'd steer clear of 10 or 12 HP if you plan to mow heavier stuff.
Can you say more about this?
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post #19 of 88 Old 09-26-2019, 10:02 AM
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Re: Should I buy a Gravely 816T?

About the hydraulic draw bar or the power? I'll do both.

Until you showed the picture of the rear, I didn't assume it had a hydraulic draw bar because I've seen so many variations of these tractors over the years (Maybe in that era, all hydraulic lift tractors had a hydraulic draw bar, but even so, it could have been taken off and replaced with a fixed draw bar for some reason.) A hydraulic draw bar is a position-able hitch that raises and lowers with the deck lift lever. This is used for accessories like a moldboard plow or a cultivator, etc. It's an option that adds to the tractor's value, in my opinion.

(Additionally, if you look at the right rear axle housing and see a splined shaft going through the axle block, then it has part of a rear PTO setup for driving a rear cultivator. Likewise, if there is a splined shaft going through the center of the front yoke, you have part of a front PTO setup for a snow blower, etc. These are valuable parts. I say "part of" because in both cases, you need other pieces to get the power from the front of the transmission to the shafts.)

Regarding the power - as stated before, the 50in deck is closer to a finish mower than a brush hog. The 10HP and 12HP are great dependable tractors for a well-kept lawn, but if you are mowing heavier grass/weeds/light brush... it will tax those single-cylinder engines in my experience. I love my 812 for general grass cutting around my home... but if I let the grass go too long and try to cut to the typical depth, I have to reduce gears. The 818T doesn't skip a beat.

Last edited by jj94tt; 09-26-2019 at 10:13 AM.
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post #20 of 88 Old 09-26-2019, 10:49 AM
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Re: Should I buy a Gravely 816T?

IMO the 12G for $650 would be a much better over all tractor for creature comforts, but the 816 would have hydraulic lift, more power, and a pressure lubed engine. Checked the condition of the clutches on the 12G. If the linings are allowed to get too low than the rivets that the linings are attached with will wear into the clutch hub plates on the trans.

The designation of T was used interchangeably by Gravely. On the 8xx-T or 8xxx-T tractors it was the designation for the tractor being equipped with an Onan engine. When T was used in conjunction with a K before it, such as on the 8xxx-KT tractors, it then designated a twin cylinder engine.

Rick

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post #21 of 88 Old 09-26-2019, 12:45 PM
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Re: Should I buy a Gravely 816T?

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Originally Posted by WH401 View Post
The designation of T was used interchangeably by Gravely. On the 8xx-T or 8xxx-T tractors it was the designation for the tractor being equipped with an Onan engine. When T was used in conjunction with a K before it, such as on the 8xxx-KT tractors, it then designated a twin cylinder engine.
This is interesting. I am pretty sure that most 816 tractors had Onan twin cylinder engines, but without the T designation (like the one pictured above). The 816T is a bit of a rarity. The 817 was also an Onan twin, without a T.
I thought the KT was specifically for a "Kohler twin"... hence KT.

**EDIT** I think I just misunderstood you. You are saying that Gravely was not consistent, but when they did use the T, it was for an Onan twin. And the KT was a non-Onan twin (in other words, a Kohler twin).
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post #22 of 88 Old 09-26-2019, 02:02 PM
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Re: Should I buy a Gravely 816T?

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This is interesting. I am pretty sure that most 816 tractors had Onan twin cylinder engines, but without the T designation (like the one pictured above). The 816T is a bit of a rarity. The 817 was also an Onan twin, without a T.
I thought the KT was specifically for a "Kohler twin"... hence KT.

**EDIT** I think I just misunderstood you. You are saying that Gravely was not consistent, but when they did use the T, it was for an Onan twin. And the KT was a non-Onan twin (in other words, a Kohler twin).
Yes, they were not consistent with having used it on the KT series tractors too. The T was only added to Onan powered tractors that used the BxxM series Onan engines. The 816T used the B43M and the 818T used the B48M. For the CCKA powered tractors they did not have any designation, it was just 816 or 817, for example. The 816S used the S designation for Briggs single, and the T was the designation for Onan, but why they only did that for BxxM series engines is beyond me. For the 8179 and 8199 that had Onan engines they were just the 8179 Commercial or 8199 Commercial. The 8179 used the CCKA, and the 8199 used the B48G. But yes, the the 816T and 818T, along with the 8179 Commercial and 8199 Commercial are not as common, though I wouldn't say rare. The 8xxT series tractors were only a 1 year run in 1978. The 817 was also a 1 year run in 1977. The 8179 Commercial and 8199 Commercial were only around for about a year in 1979. Out of those 5 tractors the 8199 Commercial is probably the most uncommon of the bunch.

Rick

1960's-70's IH 340
1967 Gravely C8 7.6 Custom Convertible
1974 Gravely 816
1977 Gravely 817 (2)
1981 Gravely 8199-KT Professional
1985 Gravely 5260 (getting repowered)
1985 Gravely 5665 repowered w/ Honda GX390
1989 Gravely 20-G
199x Gravely 16-G
2000 Gravely Pro-14
2017 JD X758
2018 JD 3039R Deluxe Cab & 320R Loader
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post #23 of 88 Old 09-26-2019, 08:30 PM
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Re: Should I buy a Gravely 816T?

I would not buy a 12G that was either manual lift or had its engine replaced. The original M12 is a terrific engine. I suspect it wasn't pulled due to failure.

For brush hog duty, I'd definitely get a 2 wheeler.

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post #24 of 88 Old 09-26-2019, 08:30 PM
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Re: Should I buy a Gravely 816T?

Although I'm a 400 series fan (I've had the '68 430 in my avatar since 1975), they use the same 4 speed (2 hi/2 low) swiftamatic transmissions that the 2 wheelers used. The clutch cones are wet type, and are inside the transmission. The 816, and G series tractors use the newer 8 speed transmission (4 hi/ 4 low), which allows them to travel at a higher ground speed, if desired. The clutches on both the 816, and the G series tractor are external, making them easier to replace.

I may be biased ( I have 2 816s, 1972, and '75), but given a choice between the 816, and this G series tractor, I would choose the 816. The 16.5 hp Onan CCKA twin, hydraulic lift, and the rear liftable hitch (all 816s came with hydraulic lift, and a liftable rear hitch), plus their ruggedness, and versatility have made them very reliable for me over the years.

You would have to check the 816's serial number to figure out it's year of manufacture, but if it was built in 1972, and it has it's original transmission, it would also have a limited slip differential. My 1972 816, and 814 tractors do. They were included on 1972 tractors as standard equipment.

Now if this "G" series tractor had a big Kohler twin like some "G"s did...


Dave

Last edited by tracktortag; 09-27-2019 at 11:50 AM.
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post #25 of 88 Old 09-26-2019, 09:25 PM Thread Starter
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I went and looked at the Gravely 816 tonight. It was dark, so I couldn’t take it for a spin. However, it looked clean and the hydraulics appeared to work as they should. I like how high the deck can be lifted, and there were no visible signs of rust. The motor didn’t smoke and there were no visible oil leaks. It sounded good. Seller seems pretty set on the price ($700). I may go back on Saturday so we can run it in his backyard.
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post #26 of 88 Old 09-27-2019, 10:31 AM
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Re: Should I buy a Gravely 816T?

FWIW I paid $700 for my '75 816 and 50" deck when I bought it a number of years ago. While it ran well, and everything worked, it didn't look as nice as the one you're looking at (which is why I painted it). Reading your post, it sounds like it is a nice tractor, and has been well cared for, so $700 doesn't sound like an out of the ball park price to pay to me. To me, the year they were built doesn't matter as much as the condition they are in. If it's in good condition like it sounds it is, it is a tractor that, taken care of, will give you many years of service.

There are many attachments for these tractors from various mower decks to plows, snow blowers, and even trenchers. You can also use attachments originally designed for 2 wheeler tractors (walk behinds) including brush hog mowers, sickle bars, rotary plows, etc.) using a front adaptor kit. Since you mentioned brush, there are even McKissick shredder/chippers that were built that attach(ed) to Gravelys. They were designed for 2 wheelers, but again, they can be used with riders using a front adaptor kit.

OT, my personal favorite attachment is the Gravely ice cream maker.

The PTO (shifter) is under substantial spring tension when the PTO is disengaged, so when you test the PTO (engage the mower deck), move the PTO shifter slowly (you will have to hold it back as you allow it to travel) until the mower begins spinning up. Then you can drop the shifter the rest of the way. The mower deck should begin turning (pto engaging) around, or slightly past the half way point of the pto shifter's travel.

And these are the beginning, and ending serial numbers for 1972 tractors (limited slip diffs.): 10878A-15044A. Rumor has it that a few early 1973 models may have also left the factory with LSD. Not that it's the end of the world by any means if it isn't. My non-LSD tractors do very well under all circumstances. Good luck this weekend!
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post #27 of 88 Old 09-27-2019, 05:57 PM Thread Starter
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I really appreciate all the helpful responses, and the price isn’t sounding as bad.

I spoke to a place 2 hours from me that deals exclusively with Gravely’s to check on availability of parts, and the owner said he can get every part for it except for parts related to the Onan motor. He said he wouldn’t let that keep me from buying it. What do you all think about the Onan? Should it go a long time? What about changing the points/condenser?
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post #28 of 88 Old 09-27-2019, 06:32 PM
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Re: Should I buy a Gravely 816T?

In that era, I would argue that the Onan twin was the best GT engine on the market.
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post #29 of 88 Old 09-27-2019, 07:58 PM
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Re: Should I buy a Gravely 816T?

The Onan CCKA is a very good engine. In the number of years I've been using mine (mowing and snow blowing) I have only needed to do routine maintenance.

There are two MTF members who sell new, and good used Onan parts, so getting parts shouldn't be a problem. Their MTF sigs are "boomers influence", and "onanparts.com" I have bought parts from both (tune up parts, and a used CCKA starter from Boomer, and a new Onan CCKA muffler from onanparts). The only reason I needed a starter was that the '72 816 didn't have one when I bought it.


Dave

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post #30 of 88 Old 09-27-2019, 08:37 PM Thread Starter
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That front adapter kit sounds like the way to go. Thanks for mentioning. The ice cream mixer definitely shows the versatility of these tractors!

Glad to hear parts are available. So I assume condensers and points would be among them?

I’m feeling more and more inclined to grab that Gravely. Let me throw one more thing out there though. Someone mentioned Power King tractors to me. A quick search shows they’re pretty readily available and have a 3 point hitch. Are these a contender worth looking into?
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