TM 9-2320-392-10-1
M1089A1 MATERIAL HANDLING CRANE (MHC)
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OPERATION - Continued
DETERMINE REQUIRED MHC SETTINGS FROM RANGE DIAGRAM - Continued
3.
Determine load distance from MHC and locate dimension along bottom horizontal line
(1). (Example: Load is 11 ft (3m) from MHC.)
4.
Follow line vertically up graph until it intersects with boom length arc (2). Mark
intersection point (3).
5.
Follow line along arc and make note of boom length (4). (Example: If load distance is
11 ft (3 m) from MHC, boom length is 14.25 ft (4 m).)
6.
Return to intersection point (3). Follow diagonal line (5) to determine boom angle
setting (6). (Example: Boom angle setting is 40 degrees from intersection point.)
7.
Return to intersection point (3). Follow horizontal line (7) to determine boom height
(8). (Example: Boom height is 19 ft (5 m) from intersection point.)
8.
Locate load distance from MHC in Table 2.
9.
Follow across table to verify height of boom and to determine maximum load.
(Example: Boom height is 19 ft (5 m) and maximum MHC load is 11,000 lbs (4,994
kgs).)
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