|
|
#1
|
||||
|
||||
need help tearing down powerhead
Because my motor seized up, I'm trying to disassemble it to find out where the corrosion was and how it got in. I have pulled my cylinder heads and the carbs and am now trying to pull the front section of the block off of the powerhead. Is there any secret to it? There is a shifting rod blocking me a bit. It's circled and pointed to in the pictures. Am I gonna have to drop the lower unit? I'm trying to leave as much intact as possible because it is already going to be a huge challenge for me to get this thing back together (if it ever happens).
|
|
#2
01-15-2012, 01:48 PM
|
||||
|
||||
|
The powerhead must come off to go any furthur. there are mounting studs and bolts that go in underneath there that also hold that front on as well as screws inside of the lower and upper bearing retainer. Pull the case half bolts back down and pull the powerhead.
__________________
2011 SUNDANCE B20CCR SKIFF, 2011 YAMAHA 90HP 4 STROKE, 2011 KARAVAN SINGLE AXLE ALUMINUM TRAILER, LOWRANCE ELITE-7 HDI, MINN KOTA RIPTIDE TROLLING MOTOR 2000CC HYDRA-SPORT 225+HP EVINRUDE SOLD  AND THE PINK JEEP!!!! R.I.P. http://www.wellcraftv20.com/communit...ad.php?t=11664 
|
|
#3
01-17-2012, 01:34 PM
|
||||
|
||||
|
Thanks Ferm. Two of the six 1/2" bolts are locked up pretty good, so I soaked them and will try to rock them out tonight. Think I'll need a shop crane to lift this thing? What kinda weight should I expect to be lifting?
|
|
#4
01-17-2012, 09:31 PM
|
||||
|
||||
|
Got all the bolts out today. Think I'll drag the boat to work and use the forklift to hoist it, then lower it into the truck bed.
|
|
#5
01-17-2012, 11:26 PM
|
||||
|
||||
|
I wouldn't reccomend trying to lift it off by hand unless you ate your wheeties and then some.
__________________
2011 SUNDANCE B20CCR SKIFF, 2011 YAMAHA 90HP 4 STROKE, 2011 KARAVAN SINGLE AXLE ALUMINUM TRAILER, LOWRANCE ELITE-7 HDI, MINN KOTA RIPTIDE TROLLING MOTOR 2000CC HYDRA-SPORT 225+HP EVINRUDE SOLD AND THE PINK JEEP!!!! R.I.P. http://www.wellcraftv20.com/communit...ad.php?t=11664
|
|
#6
01-19-2012, 02:33 PM
|
||||
|
||||
|
Even with this cherry picker, I can't raise the powerhead. Not sure if these pics show it clearly, but something's holding it in the front and it seems to be the shaft. When I lift, the entire engine tilts. Bouncing on the lower unit doesn't seem to help.
|
|
#7
01-19-2012, 03:16 PM
|
||||
|
||||
|
not good the last pics show the powerhead adapter is coming off with the powerhead and it looks to be bad. by the way why did you tear down the motor first? you may have had a locked up lower unit. just a thought, always remove the lower unit first.
__________________
 1978 V20 Cuddy w/ 225 Johnson. And Several other boat's
|
|
#8
01-19-2012, 04:00 PM
|
||||
|
||||
|
Thanks Todd, but not very helpful at this point. What is the powerhead adapter? Should I soak the shaft with anti-seize or do I just need to use more force?
Last edited by awthacker; 01-19-2012 at 06:07 PM.
|
|
#10
01-20-2012, 01:29 PM
|
||||
|
||||
|
Dropping the lower unit was the key. It was the shift rod that was keeping the block from seperating, and it came out with the foot. Finally got into the crankshaft and it does have significant corrosion on it. Based on some previous posts and replies, this was the point I needed to reach to determine what the problem is and what to do next with the engine.
Based on the corroded cylinders and crankshaft, is it time to repower? Is replacing just the powerhead an option? How do I know if my lower unit is in good condition?
|
 |
|
|
Linear Mode
