crank rebuild 2013 RMK pro 800

[K1Dbilly]

Yup don’t weld near those plugs with them threaded in. That those out. I personally wouldn’t worry about the other stuff in the block. Won’t get any hotter than the motor does while it’s running. I was going to off to weld it then seen you’re not very local to me lol.

ok thank you. I will pull them out for the weld. Have you welded cases before? Also I’m having a hard time getting the oil/water gear shaft out. I believe it would come out the water pump side once I get the seal off/out. I just can’t get the seal to move.

 

[neilsleder]

ok thank you. I will pull them out for the weld. Have you welded cases before? Also I’m having a hard time getting the oil/water gear shaft out. I believe it would come out the water pump side once I get the seal off/out. I just can’t get the seal to move.

I’ve welded lots of cases of various machines over the years! Most weld hood but the odd one doesn’t. But all motor case weld good. Chain cases I have yet the find one that welds good.

But can’t help you with the shaft removal. Never took one apart

 

[gdhillon]

I’ve welded lots of cases of various machines over the years! Most weld hood but the odd one doesn’t. But all motor case weld good. Chain cases I have yet the find one that welds good.

But can’t help you with the shaft removal. Never took one apart

Nice welds man!

 

[Rhodesie]

Something to watch for. Mainly 2012 and older.

 

[Modman]

ok thank you. I will pull them out for the weld. Have you welded cases before? Also I’m having a hard time getting the oil/water gear shaft out. I believe it would come out the water pump side once I get the seal off/out. I just can’t get the seal to move.

1) make sure its clean. make sure its clean. make sure its clean. make sure its clean. make sure its clean. make sure its clean. make sure its clean. Getting the oil and gas off the cast aluminum is critical to keeping porosity out of the weld and getting a good seal. Literally should be drenched in denatured alcohol just before welding.

2) bolt the case halves together to minimize any distortion or warping. Pre-heat a little bit as well.

3) Ideally tape off the cylinders and plug the vent holes and run a small amount of pressured inert gas inside the case so that it purges out the crack(s).

 

[K1Dbilly]

View attachment 276945
Something to watch for. Mainly 2012 and older.

Is that a crack at the top of the arch near the bottom of the photo?

 

[Rhodesie]

Is that a crack at the top of the arch near the bottom of the photo?

You bet goes up and curves right.

 

[MP Kid]

What's with the little acne above the ports..?

 

[Rhodesie]

What's with the little acne above the ports..?

Solvent that wasn’t dried off.

 

[K1Dbilly]

Does anyone know if/how this brass bushing comes out the case?

 

[Rhodesie]

Does anyone know if/how this brass bushing comes out the case?

There is a tiny hex head screw on the bottom of the case that is a locator for that bushing. Take out that screw and the bushing will come out.

 

[K1Dbilly]

Does anybody know how to get this exhaust bellow off so I can correctly clean my power valves? I’m assuming the hex end must just thread off?

 

[ABMax24]

Does anybody know how to get this exhaust bellow off so I can correctly clean my power valves? I’m assuming the hex end must just thread off?

Yeah, just spin the nut off. Hold the valve in a soft jawed vice

 

[Rhodesie]

Take the nut off and you can remove the bellows. Remove the flange and you can take out the guillotine.

 

[K1Dbilly]

There is a tiny hex head screw on the bottom of the case that is a locator for that bushing. Take out that screw and the bushing will come out.

Is there any trick to getting that bushing lined up for that screw to go back in upon assembly?

 

[K1Dbilly]

Which gasket material should I use for the cases? I’ve heard permatex motoseal ultimate grey rtv gasket maker might not get thin enough. Should I use Three Bond 1211?

 

[Rhodesie]

Is there any trick to getting that bushing lined up for that screw to go back in upon assembly?

I mark the bushing with a sharpie and just eyeball it. Use a pick down the screw hole to make sure its lined up.

 

[Rhodesie]

Which gasket material should I use for the cases? I’ve heard permatex motoseal ultimate grey rtv gasket maker might not get thin enough. Should I use Three Bond 1211?

I use ultra grey gasket maker. Its thin like three bond. Torque cases to 22ft/lbs

 

[K1Dbilly]

I use ultra grey gasket maker. Its thin like three bond. Torque cases to 22ft/lbs

When you apply ultra gray do you torque to spec right away? Or finger tight let sit for an hour then torque to spec?

 

[Rhodesie]

When you apply ultra gray do you torque to spec right away? Or finger tight let sit for an hour then torque to spec?

torque right away