Harrington Hoists and Cranes LB Lever Hoist - (L5) - Manual (Page 43)

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6.4.9 Free Chain Knob
1) Set (43) Brake Spring (silver color) into the slot of the back of (45) Free Chain Knob assembly.
Refer to Figure 6-13. As indicated in Figure 6-13, set the end of the spring next to the rib of the
knob.
Figure 6-13 Cam Guide and Brake Spring
2) Fit the opposite end of (43) Brake Spring next to the boss of the Female Thread. Refer to Figure 6-14.
Figure 6-14 Free Chain Knob and Female Thread Assembly
3) While holding the load chain on the hook side firmly to prevent (19) Load Sheave from rotating,
turn (45) Free Chain Knob assembly 120° clockwise while pressing it lightly on (33) Female
Thread. Refer to Figure 6-15. As the Free Chain Knob turns, the cam parts of (44) Cam Guide fit
into the slots of the Free Chain Knob.
4) Rotate the Selector Lever to the Up or Down position to temporarily retain the (45) Free Knob.