RECOVERY VEHICLE, FULL TRACKED: MEDIUM, M88A1
HOIST WINCH ASSEMBLY MAINTENANCE
DESCRIPTION, REMOVAL, DISASSEMBLY, ASSEMBLY, INSTALLATION, ADJUSTMENT, TESTING
Tools and Special Tools
Hoist winch cable removed (TM 9-2350-256-20)
Cupola and cupola plate removed (TM 9-2350-256-20)
Commander's seat removed (TM 9-2350-256-20)
Hoist winch cable chute removed (TM 9-2350-256-20)
Cupola and cupola plate assembly, oddment trays, boxes,
racks, or baskets removed, as required for clearance and
to prevent damage (TM 9-2350-256-20)
Subfloor plates 3, 4, 11, 17, 18, 19, 20, 21, and 23 removed
The hoist winch assembly has a vertical lifting capacity of 30,000 lb (13,608 kg) full drum, and 50,000 lb (22,680 kg) bare drum,
using a four-part line (3 to 5 wraps minimum of cable on a bare drum). The hoist winch assembly consists of a hydraulic motor,
combination control valve, counterbalance valve, winch cable, brake cylinder, and the hoist winch. The hoist winch assembly is
installed in the hull of the vehicle beneath the crew compartment.
LOAD TEST REQUIREMENT--Load testing of hoist winch is mandatory, prior to use,
under any of the following requirements: (1) When new. (2) Following any repairs, dis-
assembly and assembly, adjustments, or parts replacement, of hoist winch. (3) When
modifications are made that could affect the strength or lifting capabilities of the vehicle.
Load testing will be accomplished by support maintenance activities.
Refer to the TESTING section below for the detailed step-by-step procedure.