Hej Steffen
Det ser ud til at 3973457 bruges til Mark IV motor.
Fandt dette på nettet :
Mark IV - balancer is PN 14097024 and is used with
flywheel 3993827, ID #
3973457
Gen VI - balancer 10216339 and is used with
flywheel 14096987, ID # 14096805.
The mark IV is set is good for cast or forged assemblies and the gen VI set is only for forged rotating assemblies.
Gen V and VI flywheels/balancers cannot be interchanged with the Mark IV because of the change from 2 pc rear main seals in mark IVs to one piece in Gen V, VIs. The bolt pattern remains the same though so they physically interchange. Bottom line, you cannot put mark IV stuff on a gen V,VI engine. The balancer part numbers are different as well, so I will assume you get an out of balance problem when using the wrong one there as well.
Balancers and flywheels are not a matched set per se, just need to have the correct parts together on the correct engine.
Balancers are easy to change if this turns out to be an issue.
Du kan læse hele tråden her :
http://www.offshoreonly.com/forums/archive/index.php/t-47162.html
Hilsen Jesper