Ok. Here?s the start. A 1982 Mercruiser 470. I just bought this as is. Don?t know much history other than it overheats at high rpms. I cleaned out the manifold, elbow, replaced the thermostat and the exhaust shutters. Before the test drive I found a coolant leak out the water pump weep hole. So I am now going to replace the 2 cam seals and repair the cam shaft with speedi-seals.
It looks like the alternator upgrade was done in the past.
I disconnected battery, drained coolant, etc. The center bolt of the rotor came off easy enough.
I removed the alternator, then worked on the front motor mount.
I don?t want to hoist the motor so I?m going to do the repair in place by rigging a hoist across the boat lift supports. It worked well enough to get a 2x6 under the engine to take the support, and I removed the front motor mount.
You can see here my attempt to remove the motor with a Harmonic Balancer Remover tool. I saw that the 3 bolts were too long so I threaded a nut onto each before I slipped them through the brace and into the rotor. I didn?t have much room, but thought it would be enough. Unfortunately I didn?t allow for the fact that the 3 bolts would move forward with the rotor as it came off. When it got as far as it would go I realized my mistake. (I was only off by about half an inch).
Since you cant reverse this process I had to cut the 3 bolts short with a saws-all. I should have just found shorter bolts to begin with!
Here it is without the rotor cover.
The stator looks pretty ratty and rusted. Is that normal? Is it still being used if the alternator was added?
FIRST REAL PROBLEM: You might be able to see in the picture that I removed 3 of the 5 stator allen head bolts. Two of them have the allen socket stripped. I tried vice grips, etc. with no luck. As of now I hit them with PB Blaster to soak through the night. I?ll try to attack them tomorrow. Any suggestions? I have some bolt extractors, but those suckers are really frozen.
More later. I'll post a "Day Two".
It looks like the alternator upgrade was done in the past.
I disconnected battery, drained coolant, etc. The center bolt of the rotor came off easy enough.
I removed the alternator, then worked on the front motor mount.
I don?t want to hoist the motor so I?m going to do the repair in place by rigging a hoist across the boat lift supports. It worked well enough to get a 2x6 under the engine to take the support, and I removed the front motor mount.
You can see here my attempt to remove the motor with a Harmonic Balancer Remover tool. I saw that the 3 bolts were too long so I threaded a nut onto each before I slipped them through the brace and into the rotor. I didn?t have much room, but thought it would be enough. Unfortunately I didn?t allow for the fact that the 3 bolts would move forward with the rotor as it came off. When it got as far as it would go I realized my mistake. (I was only off by about half an inch).
Since you cant reverse this process I had to cut the 3 bolts short with a saws-all. I should have just found shorter bolts to begin with!
Here it is without the rotor cover.
The stator looks pretty ratty and rusted. Is that normal? Is it still being used if the alternator was added?
FIRST REAL PROBLEM: You might be able to see in the picture that I removed 3 of the 5 stator allen head bolts. Two of them have the allen socket stripped. I tried vice grips, etc. with no luck. As of now I hit them with PB Blaster to soak through the night. I?ll try to attack them tomorrow. Any suggestions? I have some bolt extractors, but those suckers are really frozen.
More later. I'll post a "Day Two".
. I have the service manual #3 (#8 is for 1985+). OK, the stator and wires are gonna go. The water cooled Voltage Reg. seems to be working. I have found instructions on the alternater conversion kit that say the alternator replaces the stator AND the voltage regulator. Can I remove the VR? It has wires going to the big circuit breaker, etc. I could just get a longer water hose and by-pass the thing.