SM112001 REV. G
Page 2 of 4
©Woodhead Apr-20
SPRING TENSION ADJUSTMENT
CAUTION:
Do not push tension lock lever without placing wrench onto mainshaft first. High spring
torque will turn mainshaft rapidly clockwise. Hazards or unsafe practices COULD result in
minor
personal injury or product or property damage.
NOTE: Do NOT over-tension balancer main spring. This will reduce cable travel and spring life.
NOTE: If drum locks up (cable will not pull out) when reducing spring tension, increase tension until
automatic lock disengages. (See Automatic Lock)
Observe following before making spring tension adjustments:
Tool and all accessories are attached to tool clip.
Tool will lower if the weight of tool exceeds tension adjustment of
balancer mainspring.
If cable stop is tight against cable guide prior to adjustment, there
is too much tension on balancer mainspring.
To increase spring tension, turn mainshaft with wrench ¼ turn (one
click at a time) in a counter-clo
ckwise direction ( “+” symbol on case).
Repeat until desired tension is achieved. To reduce tension, turn
mainshaft with wrench in counter-clockwise direction until tension lock
lever disengages. Hold tension lock lever in disengaged position and
carefully allow mainshaft to slowly unwind clockwise.
Repeat until desired tension is achieved.
CAUTION:
Reducing cable tension below balancer minimum
rating or releasing cable with no load attached may cause cable
to jam inside.
CABLE STOP ADJUSTMENT
NOTE:
Moving cable stop and bumper closer to the cable guide will shorten active travel of cable.
Make all cable stop adjustments after tool and accessories have been attached to tool clip and after
adjusting spring tension. (See Spring Tension Adjustment). Loosen two hex nuts and machine screws.
Slide cable stop and bumper up or down on cable so that tool is positioned at desired working height.
Tighten loosened hardware to hold cable stop at set position.
AUTOMATIC LOCK
WARNING:
Never remove spring from drum and spring assembly. Replacement springs are sealed for
safety. Hazards or unsafe practices COULD result in
severe
personal injury or death.
If tension is reduced to below rated range, automatic lock will engage and prevent cable drum from
turning. Increase tension until automatic lock disengages. If a spring should break, automatic lock will
engage to prevent drum from turning. Lock will disengage after new spring assembly is installed.
SERVICE
TOOL REPLACEMENT
When replacing tool and attachments, make sure cable is fully retracted. (See Tool Attachment).
DRUM & SPRING ASSEMBLY REPLACEMENT
Remove balancer from service and remove all spring tension from balancer. (See Spring Tension
Adjustment). Remove two screws and cable guide. Remove four screws and nuts. Remove rear case
assembly & retaining ring from mainshaft. Remove mainshaft, hub and tension lock and cable assembly
with all attached parts from drum and spring assembly. Remove cable assembly from old drum and
spring assembly. Attach cable assembly to new drum and spring assembly (See Cable Replacement).
Reassemble unit in reverse order. Place balancer back in service and attach tool. (See Tool
Attachment). Set spring tension with tool and attachments in place. (See Spring Tension Adjustment.).
CABLE REPLACEMENT
