Harrington Hoists Oxygen Equipment L4LB User Manual

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)  
GENERAL USE  
EDOC0161  
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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)  
GENERAL USE  
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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  
GENERAL USE  
EDOC0161  
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Rev. 0 May 16, 2000  
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