TEST LOADS.

TB 9-2320-279-34

Test Classification Ill is a static Iift test used to assure structural integrity of HIAB Cranes at 110

percent of their maximum rated load.

Test Classification IV is a dynamic functions test performed to assure operability of crane and

outriggers. All cranes are tested at 100 percent of their maximum rated load. The HIAB 8108

Crane dynamic testing is at 110 percent of the load rating.

Table 2-2. Load Ratings

Crane Model

Load Rating (pounds)

Load Radius

(Feet' and Inches")

Grove M977

4,500

Grove M984

(on M984E1)

14,000

Grove M985

5,400

16'6"

HIAB 8108 & 8108-2

On M985E1

4,500

20'6"

HIAB 8109

10,000

12'

(on M984)

2-2. TEST LOADS.

Test toads for HEMIT Cranes may take the form of weights that are locally fabricated, or any

available item of the proper weight. (The weight of any lifting slings, hooks or rigging should be

considered in selecting or instructing test weights). A calibrated load indicator or a calibrated

dynamometer may be used for static testing. All load testing devices should have a valid

calibration label affixed in a visible place. If a calibrated dynamometer is used, be sure it has a

minimum capacity of twice the load test value for proper accuracy.

2-3. FABRICATING TEST WEIGHTS.

Table 2-3 lists the test loads that are required for testing the various HEMTT Cranes. Although no

unique fabrication details are given, Table 2-4 gives weight details for bulk plate steel of varying

thickness. If weights are constructed by welding plates together, allowance should be made for

additional weight added by the welding process.

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