help me revive this beast (Yanmar 4JHE on F39PH)
Posted: Mon Apr 20, 2015 6:44 pm
hi all
Freedom 39 Pilothouse with Yanmar 4JHE engine
bought the boat last fall, but it's been sitting under a pile of snow in NH until basically last week
finally back at work on the engine (among other things)
history:
- boat sat for 3 years without running
- PO *did* motor around a bit in 2012
survey from June '12 said motor running well
- talked to local diesel guy who did a little work on her
said she needed a starter, and the wiring was a nightmare (definitely true on both counts)
he said she was stuck from sitting, but he was able to free her up with some penetrating oil and cursing
that might have been a year ago or so
without further ado, here's the beast, as of this AM (warning: not for the faint of heart):
first thing I did was pull off a couple of those alternators, so I could see the back of the engine:
Question #1:
how do I turn over the engine by hand? crank bolt is *not* accessible
there is an extended pulley on it that drove the extra alts, and that pulley does not have a central bolt (4 peripheral)
plus, it is about an inch from the bulkhead - I don't know how he even got it on there:
I tried yanking on the top belt, which is old and dry - not much grip
I *think* the engine may have moved a tiny bit - maybe a 1/16" - before the belt slipped, but it could have been my imagination
so: monkey wrench on the dry belt? crank on the alternator bolt? (that bolt is better)
fresh belt/wrench combo on the crank pulley? god forbid, remove the extended pulley so I can access the main crank bolt?
thanks for any thoughts
Rolf in MA
Freedom 39 Pilothouse with Yanmar 4JHE engine
bought the boat last fall, but it's been sitting under a pile of snow in NH until basically last week
finally back at work on the engine (among other things)
history:
- boat sat for 3 years without running
- PO *did* motor around a bit in 2012
survey from June '12 said motor running well
- talked to local diesel guy who did a little work on her
said she needed a starter, and the wiring was a nightmare (definitely true on both counts)
he said she was stuck from sitting, but he was able to free her up with some penetrating oil and cursing
that might have been a year ago or so
without further ado, here's the beast, as of this AM (warning: not for the faint of heart):
first thing I did was pull off a couple of those alternators, so I could see the back of the engine:
Question #1:
how do I turn over the engine by hand? crank bolt is *not* accessible
there is an extended pulley on it that drove the extra alts, and that pulley does not have a central bolt (4 peripheral)
plus, it is about an inch from the bulkhead - I don't know how he even got it on there:
I tried yanking on the top belt, which is old and dry - not much grip
I *think* the engine may have moved a tiny bit - maybe a 1/16" - before the belt slipped, but it could have been my imagination
so: monkey wrench on the dry belt? crank on the alternator bolt? (that bolt is better)
fresh belt/wrench combo on the crank pulley? god forbid, remove the extended pulley so I can access the main crank bolt?
thanks for any thoughts
Rolf in MA