4-73. GAGE MARKER DISK AND GROUND WIRE REPLACEMENT.
Removal of Gage Marker Disk
Removal of Ground Wire
Installation of Gage Marker Disk
Installation of Ground Wire
General Safety Instructions:
When working inside tank, always provide
adequate forced air ventilation at the man-
hole opening with air directed into com-
partment where work is being performed.
NEVER work alone inside a tank; a second
Tool kit, general mechanic's
person must be stationed at the manhole
opening. The person inside the tank must
have a safety line and harness on in case of
Personnel Required: Two
emergency for rescue operations.
REMOVAL OF GROUND WIRE
Ground wire (2) may be frayed at end.
This is normal.
Cut ground wire (2) from gage marker rod
(1) and remove.
b. INSTALLATION OF GROUND WIRE
(1) Install ground wire (2) through
hole in gage marker rod (1) and
install one sleeve (4). Use vise
grips to crimp sleeve.
Ground wire (2) is not attached to
tank floor: ground wire only rests on
(2) Install sleeve (3) approximately
6 in. (15.24 cm) from other end
of ground wire (2). Use vise grips
to crimp sleeve.