This is the first Blue Bird Bed Bug report of the
season. Both machines were serviced
during our winter maintenance program.
On one machine we needed to replace a clutch cover gasket that failed to
the overheating of the clutch oil caused by too small of a clutch for the
application.
On the first rental of the season blade and hub detached
from the drive shaft. The drive shaft
hub assembly is one of the weakest links on the machine. This hub shaft and bearing assembly needs a
major strengthening as I referred to on May 26th of 2013. The Blade
Shaft needs to be 1” in diameter with stronger and wider bearing support. The Blade shaft and hub assembly are sloppy
loose right out of the box. This assembly
needs to be a one piece unit or at minimum machined too much tighter tolerances.
While Jody Kerr of Blue Bird believes it is
too expensive to fix this problem a simple tightening of the tolerances would
only require an adjustment on the boring machine that bores the blade hub. At the Rental Show I passed out the address to this Blog to
Jody Kerr and some members of her staff.
One of the issues is the two small set screws that hold the hub to the
blade. The set screw wrench will break
before the desired torque is reached. I
have come up with a solution to try to solve the problem with blades and hubs flying
off. I replaced the set screws with
grade 8 bolts. I torqued the bolts until
the heads break off.
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