Re: Mercruiser 3.0 Harmonic Balancer Install

[cmcgovern]

Re: Mercruiser 3.0 Harmonic Balancer Install

I removed mine last month to change the timing cover. It went on easier than it came off. Just put a little oil on the shaft and make sure the key is in the right place. I did sand off a bit of rust on the leading edge of the crank which helped it get lined up with the key. 4lb sledge and block of pressure treated wood worked well for me.

When removing I did notice that there was some rtv sealing the outer end of the key. When re installing I put new rtv in just to be safe as oil could leak out from there. Just a dab once it is pressed back on.

I keep seeing this "beating a harmonic balancer on with a hammer is not a good idea"! the only way i would hit the harmonic balancer with a hammer and feel this wouldn't hurt the main bearing, would be if i put a block of wood on a concrete floor, placed the motor (Flywheel off) rear crank side motor on the block ( so the motor is standing up) and hit the harmonic balancer with a dead blow hammer so there is no stress on the main and rod bearings. Im sorry if you don't want more issues with a lower end heat the balancer up and cool the crank first. a bfhammer is not the answer to everything. sorry i just have read this in 5 posts and had to say something



Chris,

 

[Bondo]

Re: Mercruiser 3.0 Harmonic Balancer Install

Re: Mercruiser 3.0 Harmonic Balancer Install

Originally Posted by smassey22180 View Post
I removed mine last month to change the timing cover. It went on easier than it came off. Just put a little oil on the shaft and make sure the key is in the right place. I did sand off a bit of rust on the leading edge of the crank which helped it get lined up with the key. 4lb sledge and block of pressure treated wood worked well for me.

When removing I did notice that there was some rtv sealing the outer end of the key. When re installing I put new rtv in just to be safe as oil could leak out from there. Just a dab once it is pressed back on.

I keep seeing this "beating a harmonic balancer on with a hammer is not a good idea"! the only way i would hit the harmonic balancer with a hammer and feel this wouldn't hurt the main bearing, would be if i put a block of wood on a concrete floor, placed the motor (Flywheel off) rear crank side motor on the block ( so the motor is standing up) and hit the harmonic balancer with a dead blow hammer so there is no stress on the main and rod bearings. Im sorry if you don't want more issues with a lower end heat the balancer up and cool the crank first. a bfhammer is not the answer to everything. sorry i just have read this in 5 posts and had to say something



Chris,

Ayuh,.... Welcome Aboard Chris,.... I agree with ya, but yer 'bout a year late for this discussion,....

I'll give ya a thread of yer own, 'n We can further the discussion,....