BROWN 410 Series, Operator'S Manual

Page: 24 / 44

Maintenance
24
Tightening Blade Bolts ( continued )
Danger! When the bolt is not sufficiently tight, the blade is allowed excess vertical movement
when it strikes an object. This situation will cause the blade to break from fatigue and to be ejected from
the cutter. While this situation is occurring, the loose blade bolt is also hammering the underside of the
blade carrier; the shoulder of the blade bolt beats an indention around the blade bolt hole into which
the bolt shoulder will fit. When this damage occurs, the blade bolt will pull up into the indention when
the bolt is tightened, causing the blade to jam so that it can no longer pivot on the blade bolt. A blade
carrier damaged in this manner must be taken out of service immediately. Replace the blade carrier
(contact Brown Mfg. Corp. for instructions) and replace the blades and blade bolts before returning
the machine to service.
The described occurrences will cause the blades
to break and be ejected. An ejected blade can and will
cause serious injury or death.
REMEMBER: Blades must pivot freely and blade bolts must be tight!
Tightening Stump Jumper:
Remove blade bar cotter pin and tighten nut with a 1½” socket. Torque nut to 300 ft./lbs.; continue
to torque until cotter pin hole aligns with nut. Install a new cotter pin.
Never loosen nut to align
cotter pin hole; always tighten to next alignment slot. When replacing stump jumper check
hub for wear, clean thoroughly and apply anti-seize to shaft before assembly.
Proper Gearbox Lubrication
On level ground, remove the pipe plug from the right side of the gearbox housing. If the oil level is
not at that port level, oil must be added. Remove the vent plug from the top of the housing and add the
recommended lubricant (cotton picker spindle grease) until the oil level reaches the side port. Make
certain both plugs are replaced and tightened securely before operating.