M-8 Check, and tighten if required, all bolts at the bus
connection points indicated by a hexagon in the
adjacent figures Although one specific type of
compartment is shown In these figures, it is
intended that similar maintenance be performed
on all incoming main units. Maximum torque
values, shown in the table below, should be used
If a torque wrench Is not available and
tightening bolt until Bellevllle conical washer
appears flat and then back off slightly (not more
than 1/8 turn).
Bolt Head DiameterBolt Diameter
TYPICAL SPLICE CONNECTION
Check, and tighten if required, all main lug set
screws holding incoming conductors in main
lugs. Recommended torque values listed below
should be used for both aluminum and copper
American Wire Gauge
Inspect all insulators, braces, and barriers.
Replace any that show signs of arcing damage,
tracking or excessive heat.