Sheppard Diesel SD-3 - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 63 (permalink) Old 07-22-2013, 02:32 AM Thread Starter
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Sheppard Diesel SD-3

Well I was having some fun with my SD-3 over the 4th of July holiday and then she started knocking the night before the Saturday morning parade. Won't bore everyone with the details but it is an annual event that we as a family look forward too and we pause to remember Grandpa.

Since there were only 1209 of these made and the total number surviving is much less I wanted to chronicle it for others to find. You can find out more about the history of RH Sheppard on their website and also there is a Sheppard Diesel club but they don't keep up with the website. I am a club member and can get you in contact with the right folks if your looking for information. Sheppard made 4 tractors SD-1, SD-2, SD-3 and SD-4 and made 10, 212, 1209, 177 in respective order. Many of you will know them best for the power steering gear boxes they make for trucks. What is interesting is the SD-2 and 3 use a Ross steering gear and then Sheppard developed a power steering system for the SD-4. About that time the tractor business proved to be a dead end so they ended the Diesel engine manufacturing and focused just on power steering gear boxes.

I pulled it apart today and as I feared the front cylinder (they didn't number as far as I can tell) has a bad piston wrist pin bearing. Not the end of the world but your looking at something that you don't pick up parts for at the dealer. I have a head gasket coming from the man who is pretty much the key guy for these tractors. Later this week (ran out of time again) I will pull it out and see if a machine shop can make me new bushings. Trying to determine if I should pull all three and just bite the bullet or fix just the sloppy one. The other two seem pretty tight.

Serial number is 3-1175 and was built in 1950 and is considered fairly early production. Sheppard counted by 5 on serial number to deceive competitors about how many tractors they were actually selling.

The diesel engine is a simple design and uses power cells or a chamber that the fuel is injected into rather than directly at the piston. You will notice that in the photos of the head. It is a low pressure injection system and when running does not give off the normal noise most diesel engines make. I will also post some photos of the last club show. Enjoy.

Wes
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Early 2004 F-250 4x4 CC 6.0


2nd owner, ARP studs 1 at a time, Some parts missing in the exhaust path, BD intercooler hoses, Blue spring, MC filters, Sinister coolant filter, Exhaust manifold gaskets, WARN lockouts, Gold coolant, zoodad mod, autometer boost gauge, high idle mod, Scangauge 2, SCT X3 tuned from KEM, autometer fuel pressure gauge, Archoil 6200 in the fuel, FICM by Ed w/ATLAS40, autometer pyro gauge,'08 Alum Rear Diff cover, 5w-40 Rotella T6 w/ Archoil 9100 in it, zert in the slip joint, harpooned fuel tank, 6.4 banjos


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post #2 of 63 (permalink) Old 07-22-2013, 02:58 AM Thread Starter
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Photos from 2013 Sheppard Show

Some Photos from show in Bucyrus, OH
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Early 2004 F-250 4x4 CC 6.0


2nd owner, ARP studs 1 at a time, Some parts missing in the exhaust path, BD intercooler hoses, Blue spring, MC filters, Sinister coolant filter, Exhaust manifold gaskets, WARN lockouts, Gold coolant, zoodad mod, autometer boost gauge, high idle mod, Scangauge 2, SCT X3 tuned from KEM, autometer fuel pressure gauge, Archoil 6200 in the fuel, FICM by Ed w/ATLAS40, autometer pyro gauge,'08 Alum Rear Diff cover, 5w-40 Rotella T6 w/ Archoil 9100 in it, zert in the slip joint, harpooned fuel tank, 6.4 banjos


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post #3 of 63 (permalink) Old 07-23-2013, 04:19 AM
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Cool pics. Never seen a Sheppard Diesel in a Farmall tractor. The Sheppard Diesel must have been ahead of its time, it uses head studs instead of bolts.

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post #4 of 63 (permalink) Old 07-23-2013, 09:58 PM Thread Starter
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Quote:
Originally Posted by Dodgefarmer View Post
Cool pics. Never seen a Sheppard Diesel in a Farmall tractor. The Sheppard Diesel must have been ahead of its time, it uses head studs instead of bolts.
Sheppard made a kit for Farmall tractors - mostly M's that was promoted as a 1 day job to cut fuel savings in half. They are rare and very valuable. Several of my studs have been replaced by bolts but they made a sturdy engine most of them were used in marine engines and generator sets. The fuel injection system was pretty basic and didn't prove to be very reliable. Would love to find a welder generator with a 2 cylinder diesel on it.

Early 2004 F-250 4x4 CC 6.0


2nd owner, ARP studs 1 at a time, Some parts missing in the exhaust path, BD intercooler hoses, Blue spring, MC filters, Sinister coolant filter, Exhaust manifold gaskets, WARN lockouts, Gold coolant, zoodad mod, autometer boost gauge, high idle mod, Scangauge 2, SCT X3 tuned from KEM, autometer fuel pressure gauge, Archoil 6200 in the fuel, FICM by Ed w/ATLAS40, autometer pyro gauge,'08 Alum Rear Diff cover, 5w-40 Rotella T6 w/ Archoil 9100 in it, zert in the slip joint, harpooned fuel tank, 6.4 banjos


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post #5 of 63 (permalink) Old 07-27-2013, 01:15 AM
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Quote:
Originally Posted by Dodgefarmer View Post
Cool pics. Never seen a Sheppard Diesel in a Farmall tractor. The Sheppard Diesel must have been ahead of its time, it uses head studs instead of bolts.

All John Deere 2 cylinders used studs and not bolts.

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post #6 of 63 (permalink) Old 07-27-2013, 01:38 AM Thread Starter
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Well lesson 1 learned today. The connecting rod will not clear the sleeve and pulling the sleeve is not something I'm going to attempt. So I will be splitting it and pulling the engine. That was a bummer but does answer my question about replacing all three wrist pin bushings- you betcha it's getting done. I will post pics as I go. Went to the steam/ tractor show today near home and was just a spectator

The connecting rod crank bearings look good on the front piston and I believe were all replaced when it was restored.

Stings a little every time I scrape the paint off a bolt or part taking something apart.

Early 2004 F-250 4x4 CC 6.0


2nd owner, ARP studs 1 at a time, Some parts missing in the exhaust path, BD intercooler hoses, Blue spring, MC filters, Sinister coolant filter, Exhaust manifold gaskets, WARN lockouts, Gold coolant, zoodad mod, autometer boost gauge, high idle mod, Scangauge 2, SCT X3 tuned from KEM, autometer fuel pressure gauge, Archoil 6200 in the fuel, FICM by Ed w/ATLAS40, autometer pyro gauge,'08 Alum Rear Diff cover, 5w-40 Rotella T6 w/ Archoil 9100 in it, zert in the slip joint, harpooned fuel tank, 6.4 banjos


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post #7 of 63 (permalink) Old 07-27-2013, 01:05 PM
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Quote:
Originally Posted by Weld engineer View Post
Well lesson 1 learned today. The connecting rod will not clear the sleeve and pulling the sleeve is not something I'm going to attempt. So I will be splitting it and pulling the engine. That was a bummer but does answer my question about replacing all three wrist pin bushings- you betcha it's getting done. I will post pics as I go. Went to the steam/ tractor show today near home and was just a spectator

The connecting rod crank bearings look good on the front piston and I believe were all replaced when it was restored.

Stings a little every time I scrape the paint off a bolt or part taking something apart.
It awlays hurts to scratch the paint on anything restored. Looking forward to the pics of the progress.

"Only accurate rifles are interesting" -Townsend Whelen

2012 Ram 2500 Crew Cab Big Horn
6.7L 68RFE 4wd
Yeah its stock.
Edge Insight CTS / Line-X / Access Bed Cover
B&W Turnover Ball / Companion Hitch
Pac Brake Air Bags
On Board Air
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2010 Jeep Wrangler JK Unlimited Rubicon/ Tuned with some toys.
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post #8 of 63 (permalink) Old 07-28-2013, 12:00 AM
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Thanks fer posting the pics, Wes. Good luck with your undertaking. Once you get past the pain of scraping the paint, , You will be ok.---Bob
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post #9 of 63 (permalink) Old 07-28-2013, 03:18 AM Thread Starter
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Originally Posted by broncobob View Post
Thanks fer posting the pics, Wes. Good luck with your undertaking. Once you get past the pain of scraping the paint, , You will be ok.---Bob
Thanks Bob, next weekend the work begins.

Early 2004 F-250 4x4 CC 6.0


2nd owner, ARP studs 1 at a time, Some parts missing in the exhaust path, BD intercooler hoses, Blue spring, MC filters, Sinister coolant filter, Exhaust manifold gaskets, WARN lockouts, Gold coolant, zoodad mod, autometer boost gauge, high idle mod, Scangauge 2, SCT X3 tuned from KEM, autometer fuel pressure gauge, Archoil 6200 in the fuel, FICM by Ed w/ATLAS40, autometer pyro gauge,'08 Alum Rear Diff cover, 5w-40 Rotella T6 w/ Archoil 9100 in it, zert in the slip joint, harpooned fuel tank, 6.4 banjos


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post #10 of 63 (permalink) Old 08-04-2013, 02:03 AM Thread Starter
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Teardown of Sheppard Diesel SD-3

Well made some solid progress today. She is torn down and the connecting rods are off to the machine shop for some TLC. It appears the culprit was some corrosion of the wrist pin which wore the bushing (bearing sees full rotation and bushing only partial rotation correct?) The connecting rods were all rebuilt about 12 years ago. I fear some oil diluted by fuel, condensation and years of the same oil in the crankcase did some damage. Only one wrist pin shows this "worm tracking and the other two are clean" So I would appreciate any insight into this phenomenon. Sorry I didn't get a photo of it since I sent them off with my Dad before getting a photo. The tractor has has 15w40 Rotella in it for 10 plus years and I had changed it earlier this year with 15w-40 Delvac. After looking over the bearings I am going to put 30w in it like was required in 1950 (straight weight and non-detergent). It doesn't run that hot barely 160 on the temp gauge so I think the 15w40 is a bad idea. Debating on trying to replace the mains and connecting rod bearings. The stamps in the mains show 50 or 52 on several so I think they are the original mains. Connecting rod bearings are marked 00. If someone can confirm for me that these are date codes on Fm (Federal Mogul) bearings I would appreciate it. So far no other suprises or broken bolts just waiting now for the machine shop work (and the bill) so I can put her back together. If anyone has a good access to Federal Mogul bearings please PM me I am interested in seeing if the mains are still available and prices on the connecting rod bearings.

Photos of the work so far.

Wes
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Early 2004 F-250 4x4 CC 6.0


2nd owner, ARP studs 1 at a time, Some parts missing in the exhaust path, BD intercooler hoses, Blue spring, MC filters, Sinister coolant filter, Exhaust manifold gaskets, WARN lockouts, Gold coolant, zoodad mod, autometer boost gauge, high idle mod, Scangauge 2, SCT X3 tuned from KEM, autometer fuel pressure gauge, Archoil 6200 in the fuel, FICM by Ed w/ATLAS40, autometer pyro gauge,'08 Alum Rear Diff cover, 5w-40 Rotella T6 w/ Archoil 9100 in it, zert in the slip joint, harpooned fuel tank, 6.4 banjos


Not a diesel mechanic in real life but I play one on the Internet
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