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AERIAL LADDER TENSION CABLES -706880643
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TM-5-4210-233-14-P-1 Firfighting Truck 100 Ft. Aerial Ladder 1000 GPM Manual
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AERIAL LADDER ELECTRICAL CABLES -706880645
TM 5-4210-233-14&P-1
4-205. AERIAL LADDER TENSION CABLES - Continued
(4) Correct tension on extension and retractioncables is checked by placing the ladder at 0 degrees
elevation, extending the ladder approximately two feet (610 mm), and then retracting ladder
approximately one foot (305 mm). Upon inspection of the cables, all cables should be self-
supporting with no portion of the cables coming in contact with any part of the ladder. Should
cables come in contact with the ladder or sag unevenly, tighten cables appropriately. Front
extension cables should be tightened first unless the ladder sections are not retracting far
enough. In this case the rear retraction cables should be tightened first. This will pull the ladder
sections inward, while tightening the front extension cables will draw the sections outward. Care
must be taken to maintain the required 1/4" to 3/4" (6.35 to 19 mm) gap between the water pipe
mounting brackets and the front crossmembers of the sections below.
(5) Once the base section and the lower mid section are aligned properly, the upper mid section
should be checked for proper alignment in relation to the lower mid section and adjustments
made to front cables of the lower mid section in the same manner as was done on the base
section. (6)
Once the lower and upper mid sections are aligned properly, alignment of the
fly and upper mid sections should be checked in the same manner as the other sections.
(7) After all adjustments are completed on the extension and retraction cables, the electrical cables
should be adjusted.
4-515

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