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13. CONTROL HEAD MAINTENANCE
Fig. 30: Completed trip line installation.
13.2 Spring Power Reel Replacement
Remove Old Spring Reel
CAUTION: The spring reel must be unwound
before its securing nut is loosened. Loosening
the nut on a wound spring reel could result in
damage to the reel and/or injury to your hands.
1) Remove the tripline per 13.1, paragraphs 1) through
3).
2) Wear gloves to protect your hands. Hold the spring
reel firmly and remove the clamp or other locking device.
Release the tension gradually until the reel is completely
unwound.
3) Locate the spring reel locking nut on the back of the
control head. Use a chisel or file to remove the locking
burr next to the locknut.
4) Remove the locking nut, and then the spring reel.
IMPORTANT: Note the position of the anti-torque plate
on the back of the spring reel. The spring reel must
be installed with the anti-torque plate positioned
between the two lugs cast in the control head.
5) When fitting the new spring reel, check the clearance
between the reel and the control head. There must be a
gap of approximately 1/8" (3 mm) to prevent rubbing. Older
fabricated heads may require spacer washers under the
spring reel to achieve the required clearance.
6) Install the spring reel locking nut. Use an allen key to
prevent the reel shaft from turning. Tighten the reel locking
nut to 40 ft-lbs (5.5 Nm).
7) Use a chisel to make a burr to prevent the locking nut
from loosening. “Loctite” may also be used. See Fig. 31.
Installing New Spring Reel Models 6072 - 4453 (Small
head)
Fig. 31: Make a burr to secure the tightened nut.
IMPORTANT: The new spring reel is supplied with a
vinyl coated cable attached. This vinyl coated cable
must NOT be used as a tripline.
8) Wind the spring reel by hand in the direction indicated
by the arrow on the cover four complete revolutions.
9) Pull the vinyl covered cable out to its full extent, and
secure the spring reel per Section 13.1, paragraph 2).
15) While holding the reel securely, release the temporary
lock. Allow cable to wind in gradually, do not let the reel
free-wind. Use gloves to protect your hands from injury.
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