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Armor means a tougher lift.

1. Make sure all loose objects inside the cab are either properly fastened down or removed. Unsecured items will fly around when the cab is raised, damaging the inside of your truck.

2. Lock the machine gun ring mount in position. An unsecured mount--especially one with the machine gun still attached--can swing around abruptly during the lift. The sudden shift in weight can cause the cab to fall forward more rapidly, injuring someone standing in the way.

3. Make sure no one is still in the cab, then close and secure all doors. The hinges can be damaged if a door suddenly slams open as the cab tilts forward. And anyone standing in the door's path can be seriously hurt.

4. Loosen and lower the armored nose plate. To do that, you'll need to remove the bolts that lock the nose plate in position. If those bolts aren't completely removed, they keep the cab from coming up. And if the cab won't move, the lift cylinder bends and can even damage the cab floor.

Forgetting to lower nose plate can result in bent lift cylinder ...

... and damage to cab floor

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5. Install the cab lift safety chains, NSN 4010-01-5250947. Once the cab passes the center point of the lift, the extra weight from the AOA makes it fall forward. That damages the lift cylinder and the cab hinges. The safety chains keep the cab from falling too far forward.

Just make sure you remember to stow the safety chains after you've lowered the cab. Leave the chains in place and they'll wrap around the vehicle's tires during operation.

Safety chains keep cab from falling too far forward

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WITH STEPS 1-5 COMPLETE YOU'RE READY TO SAFELY BEGIN LIFTING THE CAB.

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GET THAT CAB UP. WE'VE GOT A LOTTA WORK TO DO TODAY.

YOU GOT IT, CHIEF.

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YOU'RE GONNA HAVE A LOT MORE WORK NOW ... YOU DIDN'T RAISE MY CAB THE RIGHT WAY.

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LIFTING THE FMTV'S CAB FOR ROUTINE MAINTENANCE IS ANYTHING BUT ROUTINE IF YOUR TRUCK HAS ADD-ON ARMOR (AOA).

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IN FACT, YOU CAN CAUSE ALL KINDS OF DAMAGE-INCLUDING A CRUSHED FLOOR AND A BENT CAB LIFT CYLINDER-IF YOU DON'T DO IT THE RIGHT WAY ...

... EVERY ... SINGLE ... TIME.

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TO PREVENT THAT DAMAGE, FOLLOW THESE STEP-BY-STEP PROCUDURES AS YOU PREPARE TO LIFT THE CAB ...

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COPYRIGHT 2005 PS Magazine
No portion of this article can be reproduced without the express written permission from the copyright holder.
Copyright 2005, Gale Group. All rights reserved. Gale Group is a Thomson Corporation Company.

Article Details
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Title Annotation:FMTV...
Publication:PS, the Preventive Maintenance Monthly
Geographic Code:1USA
Date:Oct 1, 2005
Words:398
Previous Article:HMMWV suspension/steering upgrade kits.
Next Article:Protect tow cylinder lines.
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