L4LB Lever Hoist
Boeing Version
Owner’s Manual Insert
HOISTS AND CRANES
For Boeing versions of the L4LB lever hoist, the following
paragraphs, tables and figures replace in their entirety the
corresponding figures in the 3/4 to 9 Ton "Harrington
Cumalong Lever Puller, Model L4" Owner's Manual
(Page 8)
3.1 Principle and Operation of Chain Adjusting
3.1.1 Chain Adjusting Principle
ꢀꢁꢂꢃꢄꢃꢅ
: Improper Lever hoist use could result in death or serious injury. TO avoid
these hazards:
ꢀꢁꢂꢃꢄꢃꢅ
ꢀꢁꢂꢃꢄꢃꢅ
: NEVER touch the free knob during lifting or lowering of the load.
: ALWAYS Check that the change-over knob is placed in the proper
position.
NOTE: If hand lever movement does not produce lifting, pull down on the load chain while
ratcheting until slack is removed.
3.1.2 Operation Method
To raise the hook: Under no load, set the change-over knob to the neutral position, “N”. Shorten
the length of chain between the bottom hook and the hoist by turning the free knob clockwise or
by pulling on the no-load side of the chain.
To lower the hook: Under no load, set the change-over knob to the down position “DN”. Ratchet
the lever assembly with one hand while applying a small load to the bottom hook (or load chain)
with other hand.
(Page 10)
4.2 Daily Inspection
(4) (not required for Boeing versions of the L4LB)
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(5.2.1 Disassembly, Page 21)
Disassembly Procedures
Remarks
1. Remove the split pin [48], slotted nut [45], spring holder See parts list for part names,
[55], collar [53], free knob [50], brake spring [54], and
cam guide [52] from the pinion [28].
figure numbers and assembling
positions.
(5.2.1 Assembly and Adjustment, Page 28)
Assembly Procedures
Remarks
9. Place the collar [53] inside the free knob [50]. Mesh
the spring holder [55] with the pinion [28] splines and
thread the slotted nut [45] onto the pinion, fixing it with
a split pin. (See figure 30)
If it is difficult to line up with the
split pin hole, fully tighten the nut
first, then back it off slightly and
put the split pin in.
Fig. 30
10. (not required for Boeing versions of the L4LB)
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7. PARTS LIST (Page 30)
(Page 31)
Parts
per
Hoist
Fig.
Part Name
No.
3/4T
1T
1 1/2T
2T
3T
6T
9T
51 Name Plate U-B
53 Collar
1
1
1
L4810008B
530624001
518634001
59 Nameplate B with Rivets
L4800008B L4800010B L4800015B L4800020B L4800030B L4800060B L4800090B
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