Brown Products BedEdger Bantam _ Bantam Mole (B565H, B580H, B590H, B765H, B780H, B790H) - Manual (Page 14)

14
SCHEDULED MAINTENANCE
Good maintenance practices are critical if you are to enjoy trouble free operation and long life from
your Brown TRENCHMASTER
® . Most required maintenance procedures are shown in this section.
However, other common sense maintenance practices such as cleanliness and storage must be
followed.
1. See Manufacturers operating and maintenance instructions for engine maintenance procedures.
2. Check all bolts and nuts for tightness before operation and periodically thereafter.
3. Check all set screws in belt pulleys and bearing lock collars before operation and periodically
thereafter. If set screws are vibrating loose, Locktite’s Threadlocker #242 should be applied to
the threads and the set screw retightened.
4. Check drive belts for proper tension before operation. Adjust if necessary. Adjust belt tension
using the turnbuckle to ensure the spring stretches approximately ¾” to 1”. Keep belt free of dirt
and grease at all times.
5. Rotor points must be checked for wear before operation and periodically thereafter. Check at
least every 200 feet initially. When working in difficult soil conditions, they should be checked
more often. In good soil conditions, they may be checked less often but never less than each 500
feet of trenching.
6. Check rotor bearings for wear every 2000 feet. This is done by lifting the front of the machine off
the ground so that the rotor may be turned by hand. Then grasp the end of the rotor firmly and
try to move it from side to side. If there is more than ¼” movement from side to side, the
bearings must be replaced.
7. Check the idler pulley for wear before operation and replace if necessary.
8. Periodically check the idler arm for lateral movement. If the pivot bolt is badly worn, or the bolt
is loose, the idler arm may have enough lateral movement to cause the belts to come off the
pulley. The pivot belt should be tight enough to prevent lateral movement, but not so tight that
it restricts free pivoting of the idler arm.