Woodhead LA Balancer Serie - Manual (Page 4)

SM1160-01B Page 4 of 7 ©Aug-01
LOWER HOOK REPLACEMENT
CAUTION:
After securing sleeve, tape may be placed around cable end to prevent injury on frayed
strands. Hazards or unsafe practices MAY result in minor personal injury or product or
property damage.
NOTE: Clamps are used for models xxxLA01 only. A swage-fitting sleeve should be used for all other models.
If lower hook is removed or replaced for any reason, the thimble and clamps (or sleeve) must be
replaced as shown in illustration. If clamps are used, turn back 3 ¾ inch of rope from thimble. Apply u-
bolt over dead end of wire rope - live end rests in saddle. Tighten nuts evenly, alternating from one nut
to the other until reaching recommended torque (7.5 ft-lbs.). Apply second clip as near the thimble as
possible. Tighten evenly, alternating until reaching recommended torque (7.5 ft-lbs.).
MAINSPRING REPLACEMENT
WARNING: Never under any circumstances remove spring from its sheet metal cartridge.
Replacement springs are assembled in a sealed cartridge for safety and there is no need
to remove them. Removal of spring from its cartridge lead to hazards or unsafe practices
which COULD result in severe personal injury or death.
CAUTION:
Before removing mainspring, remove all tension from balancer by turning tension
adjustment nut counterclockwise until all tension is released (ref. Spring Tension
Adjustment). Hazards or unsafe practices which MAY result in minor personal injury or
product or property damage.
Remove the balancer from service and remove the two hanger bracket pins and the two cable guide
screws. The spring cover can now be removed by loosening six bolts. Remove the four bolts that hold
spring cartridge to drum. This will allow the spring cartridge assembly to be removed from the drum and
pulled off over the main shaft. The entire cartridge (containing three springs) must be replaced with a
new or rebuilt unit. Remove the old bearing from the spring cover and replace with new one.
Reassemble in reverse order and add enough tension to retract safety lock fingers on the spring cartridge
as described in Spring Tension Adjustment. Reinstall spring cover and complete tensioning.
NOTE: To align the springs with spring hubs, it may be necessary to rotate the spring assembly back and forth
slightly as the spring assembly is pushed back onto the shaft.
STAR WHEEL POSITIONING
If drum has been removed during service, it is very important to
Position star wheel properly when reassembling balancer. If this is not
done, drum will be “out-of- time” and will either fail to return or extend
The full distance of cable travels. When reassembling, with cable off
the drum and when viewed from the spring side of housing, the star
wheel must be positioned as shown in relation to pin (B). The pin on
the cable drum (A) must be positioned as shown in relation to point (C)
on star wheel.