MSA XTIRPA 30-48 Instrucciones Y Manual De Seguridad página 16

Use
(5.) Remove the retaining pin at the top of the davit arm (A). Pass the
(6.) If a material positioning winch is required, add the removable winch
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cable or rope lifeline into the pulley located at the top end of the
davit arm (B). Be assured that the cable or rope lifeline is fully
seated within the pulley groove. Replace the retaining pin.
Fig. 11 Step 5A
adapter to the bottom of the davit arm (A). To install the material
positioning winch, repeat steps 4 and 5.
Fig. 13 Step 6A
MSA/XTIRPA™ Adapter Base System 30-48" Reach
Fig. 12 Step 5B