Brown Products Trench Master 459-001, Owner'S And Operator'S Manual

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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 sp ring 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.