Picked up a John Deere BO at auction

[cjet69]

Decided to pull the steering shaft/box and the dash pod to make it easier to clean up and bolt down the shifter and crankcase covers. Installed the oil pump.

 

[cjet69]

The temp was up this afternoon so I sprayed the wheels. Hit 80°F on our thermometer on the north side of the house. Good from afar, far from good.

 

[cjet69]

Started cleaning up the carburetor. Put it in the sonic cleaner first and then it will get glass beaded. Need to find my long drills to run through the passages. Checked the piston ring end gaps and they all look good. Should be able to start assembling the engine now.

 

[cjet69]

Hit the carb with the bead blaster this morning.

 

[ricky racer]

You're lucky you've got a good carb. Up here in the great white north what usually happens is water finds it's way into the carbs float bowl, freezes and pushes the bowl off of the stem that the big nut goes on. The point of failure is always the stem. It breaks off even with the top of the nut rendering the carb useless.

 

[cjet69]

You're lucky you've got a good carb. Up here in the great white north what usually happens is water finds it's way into the carbs float bowl, freezes and pushes the bowl off of the stem that the big nut goes on. The point of failure is always the stem. It breaks off even with the top of the nut rendering the carb useless.

I've seen a couple carbs that had that happen. They make repair kits for them but some get destroyed beyond repair.

 

[cjet69]

Found my long drills to run through the passages and shot some quick drying primer on it. Looked through my supply of parts and found the gasket kit and main jet spring so I should have everything on hand to put it together.

 

[Barebones]

Found my long drills to run through the passages and shot some quick drying primer on it. Looked through my supply of parts and found the gasket kit and main jet spring so I should have everything on hand to put it together.

Good to get a break once in a while.

 

[cjet69]

I wasn't going to paint the carb yet but decided to do it while it was apart.

 

[cjet69]

Put the carb together. I noticed one of the friction balls for one of the needles was missing so I got one along with a spring ordered. That will need to be installed and swagged to hold it in place.

 

[dreece]

The carburetor didn't look too bad to start with and it cleaned up really well. I have rebuilt a couple of them that looked like they had been on the bottom of the ocean for years.

 

[cjet69]

Put the pistons back on the rods, installed the rings, and loaded them into the block. I installed them from the bottom because my ring compressor will not go down far enough into the stepped bore at the top. The factory tapper my have worked but with the block out it was easier to just load from the bottom. Used my HF transmission jack to roll it in place a little at a time while getting the rods lined up on the crank. Everything is snugged up but still need torquing. Time to assemble the head and get it installed.

 

[cjet69]

Installed the valves and rocker shaft studs.

 

[cjet69]

Still some rain today so I went out to the shop to do a little more on the JD BO. Forgot to chase the head studs so I taped everything off and ran a die over them and cleaned them up. Put the head gasket in place and set the head on the block. Need to look up the torquing pattern and ft. lbs.

 

[cjet69]

Went through some John Deere parts and found the right length manifold stud that I needed. Then threw the manifold in the blast cabinet. Had to work at it a bit to get the rust and carbon cleaned out of the runners. Wasn't to concerned with the outside other than removing the loose stuff and then treating with Ospho. I'll rattle can some black barbeque paint on it and call it good.

 

[cjet69]

Painted the manifold, Torqued the head down, and installed the rocker assy. I plan on pulling the governor/fanshaft assy to install the manifold after I paint the engine. That will allow me to clean and inspect. Probably need a base gasket unless I can find one in the extra parts.

 

[cjet69]

Yesterday evening I pulled the governor assy off of the JD BO. This morning I masked off the openings and cleaned the top surface off and treated it with Ospho. Had the upper water pipe in the E-Tank overnight and got it hosed off so its ready to blast. Need to repair the rusted end. May go out later and start wire brushing the governor assy.

 

[cjet69]

Got the governor all wire brushed and treated with Ospho. Just a couple small bracket pieces left to clean up and it will be ready to prime.

 

[cjet69]

The end of the upper water pipe on the John Deere BO was thin, pitted, and partially rusted away. I made a piece out of some larger, thin wall tubing we had laying around and got it welded on.