Latest on my Kohler CV730-0020

Re: Latest on my Kohler CV730-0020

PostBy: windyhill4.2 On: Thu Mar 06, 2014 2:32 pm

I won't argue on the fact that some engines have faulty gaskets/wrong torque, I will say this : One backfire can take out gaskets ,as 2 mechanics found out at the John Deere shop i worked at yrs ago. Close to closing time on a saturday, a customer came in & bought a new tractor.. still in the crate,our procedure was to forklift the crate to just outside the shop door,pull the plastic off,after pulling most of the crating around the tractor,while still sitting on the crate pallet,we would hook up the battery,add gas & fire up the engine to warm up while undoing the rest of the packaging ,install the steering wheel,back tractor off the skid,drive into shop ,These guys were in a hurry,as it was closing time,drove into shop & the hasty,improper shut down blew gaskets & oil seals, NEW tractor. Now everyone stayed late to set up another new tractor,i do not remember the engine make,but all OHV engines are susceptible. By the time i get done typing you will probably have your tractor running ,& stuck in the snow in your lawn .Valves look real good after cleaning the oil gunk off. NOW, if only your tractor lives as long as that engine will,you will be set to mow for yrs.
windyhill4.2
 
Hand Fed Coal Stove: Crane 404 with variable blower
Other Heating: Oaktree OWB 600K

Re: Latest on my Kohler CV730-0020

PostBy: 2001Sierra On: Thu Mar 06, 2014 10:13 pm

A little vague on model number from guys at work. Older Craftsman 27 horse garden tractor with big frame he picked up for $50.00 and Kohler dealer new exactly what gaskets where needed, common failure. New improved gaskets should solve it. Now I am looking for one on Craigslist from somebody that does not realize there is an easy fix. Hope to find a JD with same problem.
2001Sierra
 
Hot Air Coal Stoker Stove: Keystoker 90 Chimney vent
Coal Size/Type: Rice
Other Heating: Buderus Oil Boiler 3115-34
Stove/Furnace Model: Keystoker 90 Chimney Vent

Re: Latest on my Kohler CV730-0020

PostBy: SMITTY On: Sun Mar 09, 2014 12:07 pm

Finally got out there to do Cylinder #2. As expected, it was much cleaner. Lots less oil passing thru this one, although the head gasket looks just as bad ....
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John Deere G110 head gasket job, cylinder 2 (5).JPG
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John Deere G110 head gasket job, cylinder 2 (2).JPG
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John Deere G110 head gasket job, cylinder 2 (8).JPG
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This engine uses no exhaust valve seals. Strange ... (yes this pic is of the intake valve spring & valve removed)
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John Deere G110 head gasket job, cylinder 2 (9).JPG
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Made in Argentina .... interesting .................
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John Deere G110 head gasket job, cylinder 2 (10).JPG
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Exhaust valve
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Last edited by SMITTY on Sun Mar 09, 2014 12:17 pm, edited 1 time in total.
SMITTY
 
Stoker Coal Boiler: Patriot Coal - custom built by Jim Dorsey
Hand Fed Coal Stove: Harman Mark III (not currently in use)
Coal Size/Type: Rice / Blaschak anthracite
Other Heating: Oil fired Burnham boiler


Re: Latest on my Kohler CV730-0020

PostBy: SMITTY On: Sun Mar 09, 2014 12:12 pm

More pix of the cleanup ...
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John Deere G110 head gasket job, cylinder 2 (12).JPG
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John Deere G110 head gasket job, cylinder 2 (13).JPG
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Strange marks in the cylinder. Never seen anything like that before - doesn't wipe with your finger - that's a permanent marking. Maybe I need to warm her up a bit longer before mowing ....
#1 cylinder was the exact same way.
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John Deere G110 head gasket job, cylinder 2 (14).JPG
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Much cleaner ...
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John Deere G110 head gasket job, cylinder 2.JPG
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#2 DONE ...
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SMITTY
 
Stoker Coal Boiler: Patriot Coal - custom built by Jim Dorsey
Hand Fed Coal Stove: Harman Mark III (not currently in use)
Coal Size/Type: Rice / Blaschak anthracite
Other Heating: Oil fired Burnham boiler

Re: Latest on my Kohler CV730-0020

PostBy: SMITTY On: Tue Mar 11, 2014 10:13 am

She's back together again ... aside from that damn heat shield. Got pissed and called it a night last night. I could've had it running ...

Man. I'll tell ya .. this thing was VERY frustrating to work on!! It was ridiculous the amount of b/s I ran into assembling this thing. I forgot that I removed the intake manifold and carb as one unit ... so during assembly, I had already installed the intake manifold with the new gaskets, so I wasn't about to take the shroud off a 4th time and do it again. The damn linkage would NOT fit in the damn throttle!! I almost broke it trying to force it. Way down below, buried, where you can barely fit your hands is an end that will pop straight out of the governor - thank God. I finally hook that up, and now this 18" long throttle linkage is in the way - it fits right in between the carb flanges - stupid!! So I go to slide the carb on, and notice the damn cut solenoid on the float bowl is hitting the air cleaner mount bar! Guess it hit one too many times .. because now the wire broke off the stupid thing. Dremeled the plastic away, and was able to get about 1/32" of copper to stick out. Had to solder the wire back on that little shred. Of course, everything I had just spent an hour getting together had to come apart again to do this ..... ARRRRGH!!!!! I ended up removing the 2 bolts from one side of the bar, then bent it into a pretzel in frustration. Got the carb on though ... then had to spend a half hour straightening the bar ..... STILL can't find 3 of the shroud & cooling metal bolts, and 2 of them snapped off - 5 less bolts to tighten ...

DONE!! NOT working on this one EVER again!

I HATE Kohler - another engine just added to my list! Parts & engines are RIDICULOUSLY expensive & they're a royal pain in the ass to work on (at least the way John Deere set this one up).

Should have this turd making CO today though ....
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SMITTY
 
Stoker Coal Boiler: Patriot Coal - custom built by Jim Dorsey
Hand Fed Coal Stove: Harman Mark III (not currently in use)
Coal Size/Type: Rice / Blaschak anthracite
Other Heating: Oil fired Burnham boiler

Re: Latest on my Kohler CV730-0020

PostBy: Rob R. On: Tue Mar 11, 2014 10:28 am

Patience is a huge benefit when doing mechanical work. I'm sure if you had to tear this down a second time you could do it in 1/2 the time...just like anything else, the first attempt is always the hardest.

Those bolts that broke...I have had good luck with a few heat cycles, some Kroil, and an impact wrench.
Rob R.
 
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: Hitzer 50-93
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Re: Latest on my Kohler CV730-0020

PostBy: SMITTY On: Tue Mar 11, 2014 10:32 am

I hear you there Rob .... but there's something to be said for SMART engineering. Of which this unit has NONE ...

The bolts only hold the shroud on, so they're not critical. Not worth the effort, IMO. I've taken THOUSANDS of pieces of equipment apart, and few of them break bolts off like this one did, even when stored indoors and rust free. That's just shoddy engineering.

Of all the mower brands I've worked on over the years, this one was the WORST.
SMITTY
 
Stoker Coal Boiler: Patriot Coal - custom built by Jim Dorsey
Hand Fed Coal Stove: Harman Mark III (not currently in use)
Coal Size/Type: Rice / Blaschak anthracite
Other Heating: Oil fired Burnham boiler

Re: Latest on my Kohler CV730-0020

PostBy: 009to090 On: Tue Mar 11, 2014 1:51 pm

SMITTY wrote:Of all the mower brands I've worked on over the years, this one was the WORST.

Yeah, I hear ya pulling your hair out while working on this one. A true puzzle to reassemble.
At least you didn't throw a hammer through the wall this time :mrgreen:

That's strange, cuz my CH23S is so easy to work on. I guess the engine was originally designed to be Horizontal, then they Hacked it to be mounted vertical??? I don't know....
I can't take pictures of my tear-down, cuz the camera's battery just died! New batteries on order...
009to090
 
Stoker Coal Boiler: EFM 520 HighBoy
Hot Air Coal Stoker Stove: DVC-500 x 2
Coal Size/Type: Anthracite Rice

Re: Latest on my Kohler CV730-0020

PostBy: SMITTY On: Tue Mar 11, 2014 7:09 pm

Yeah I restrained myself this go around - no tools or walls were injured.

I just unleashed a verbal SHOCK and AWE assault on the tractor - second to none - throughout the entire assembly process though ... toothy


After ANOTHER minor setback, I finally got this bitch out of the barn and rolling down the street. :dancing: :punk: :band: :up:

Some video of the attempts at a first fire .... Seems I just couldn't get a damn break with this thing!! It's cursed I tell ya! CURSED!
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John Deere G110, dead battery.wmv
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SMITTY
 
Stoker Coal Boiler: Patriot Coal - custom built by Jim Dorsey
Hand Fed Coal Stove: Harman Mark III (not currently in use)
Coal Size/Type: Rice / Blaschak anthracite
Other Heating: Oil fired Burnham boiler

Re: Latest on my Kohler CV730-0020

PostBy: Flyer5 On: Tue Mar 11, 2014 7:38 pm

Well at least your miles per quart should improve. :D
Flyer5
 
Stoker Coal Boiler: Leisure Line WL110
Hot Air Coal Stoker Stove: Leisure Line Pioneer

Re: Latest on my Kohler CV730-0020

PostBy: SMITTY On: Tue Mar 11, 2014 7:40 pm

:lol: Yeah, I could tell just by the lack of soot in my lungs after the trip down the street. :D
SMITTY
 
Stoker Coal Boiler: Patriot Coal - custom built by Jim Dorsey
Hand Fed Coal Stove: Harman Mark III (not currently in use)
Coal Size/Type: Rice / Blaschak anthracite
Other Heating: Oil fired Burnham boiler