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Common sense for the boom winch.



[ILLUSTRATION OMITTED]

Don't wanna wan·na  
Informal
1. Contraction of want to: You wanna go now?

2. Contraction of want a: You wanna slice of pie? 
 hear a loud boom when using your HEMTT's boom winch? Then keep all loads secure by using a good wedge socket to attach the wire rope wire rope
n.
Rope made of twisted strands of wire.
 to the hook.

Whenever your M977, M984A1, and M985 HEMMTs are refurbished, the safety clamp on the cable is removed. But your vehicle needs this safety clamp because it keeps the wire rope from slipping back past the wedge and suddenly popping loose from the socket.

If the safety on your HEMMT's cable is missing, use a cable clamp and six inches of wire rope.

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Clamping Correctly

1. Make sure there are no rough edges or burrs on the wedge or socket that could damage the wire rope.

2. If the end of the rope is welded, cut off that portion. That allows any distortion of the rope strands--caused by the sharp bend around the wedge--to adjust itself at the end of the rope.

Wrap steel wire around the end of the wire rope to keep it from unwinding or fraying. Don't use heavy-duty tape, since it's not strong enough to hold steel and frayed wires in place.

3. Thread the rope through the socket, make a 180[degrees] turn, and then thread the rope back through the other side of the socket.

Make sure the end of the rope extends past the socket six to nine times the rope's diameter. For example, if you're using 1/2-in diameter rope, the end needs to extend 3 to 4 1/2 inches past the socket. Leaving it shorter might allow the rope to slip free of the socket during a lift.

4. Insert the wedge into the socket.

5. Clamp the dead end of the rope to the three-inch piece of rope. Position the clamp, NSN NSN National Stock Number
NSN Nokia Siemens Networks
NSN National Storytelling Network
NSN NATO Stock Number
NSN New Substances Notification (CEPA)
NSN National Student Number (NZ)
NSN Never Say Never
 4030-00-233-9566, with the dead end of the rope against the U-bolt and the short piece against the saddle. Clamp the two as close to the wedge as possible.

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Clamping Tips

Never clamp the dead end of the rope to the live end. The live end should form a nearly direct line to the clevis pin A clevis pin is a type of fastener that will allow rotation of the connected parts about the axis of the pin. A clevis pin consists of a head, shank and hole. The hole passes through the shank at the opposite end of the pin from the head.  of the fitting. Clamping to the live end could add a wear point, bend the nearly straight line, and keep the wire rope from pulling the wedge in tight against the socket.

A good way to remember the correct way to install cable clamps is to remember, "Never saddle a dead horse." The saddle portion looks like a little horse saddle, so install the U-bolt on the dead end and the saddle portion on the three-inch extra piece of wire rope.

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Also, if you decide to use more than one clamp, make sure they all go on the same way. That way, the U-bolt won't damage the live end of the cable.

Load Testing Load testing is the process of creating demand on a system or device and measuring its response.

In mechanical systems it refers to the testing of a system to certify it under the appropriate regulations (LOLER in the UK - Lifting Operations and Lifting Equipment
 

TM 9-2320-279-20-1 tells you that load testing of cranes is required before using cranes that have undergone modification or alteration. So when you've done these steps, take your HEMTT HEMTT Heavy Expanded Mobility Tactical Truck  to support for testing. They'll need to use the guidance in TB 43-0142, Safety Inspection and Testing Inspection and testing

Industrial activities which ensure that manufactured products, individual components, and multicomponent systems are adequate for their intended purpose.
 of Lifting Devices, and TB 9-2320-279-34, Test Procedures, Direct Support and General Support Maintenance Levels Load Testing Heavy Expanded Mobility Tactical Truck The Heavy Expanded Mobility Tactical Truck (HEMTT) series are a range of 8x8 diesel powered off-road capable trucks, used by the US military. Formally described as "Truck, Cargo: 10-Ton, 8x8", it has been nicknamed the "Dragon Wagon".  (HEMTT) Vehicle Cranes.

Cranes that don't meet load test requirements are NMC NMC Nursing & Midwifery Council (UK)
NMC NSSDC Master Catalog (NASA)
NMC Northwestern Michigan College (Traverse City, Michigan)
NMC National Meteorological Center
.
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Title Annotation:HEMTTs ...; Heavy Expanded Mobility Tactical Truck
Publication:PS, the Preventive Maintenance Monthly
Geographic Code:1USA
Date:May 1, 2008
Words:550
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