Turret Travel Lock.

The TOW launcher lift mechanism lifts and lowers the TOW launcher.

It

consists of an electric motor which drives a gearbox. The turret traverse

drive, gun elevation drive, and TOW elevation drive are used to position the

25mm gun and the TOW launcher.

Each drive consists of an electric motor

which drives a gearbox. The turret drives can be activated by moving the

gunner's or commander's handstations. To prevent accidental control action,

palm switches on the hand controls must be pressed before the handstation is

moved. The movement of the handstation causes the turret or weapon to move.

All drives can be manually operated by rotation of hand wheels at the

gunner's station.

When the turret is in the stabilized mode, the three

gyros sense turret and vehicle orientation and rate of movement. The gyros

send signals to the electronic control assembly which controls the drive

mechanisms.

(c) Turret Travel Lock. A turret travel lock is above the turret

shield door. The travel lock's linkage and gears can lock the turret in a

given position. Also, it can prevent turret rotation when the azimuth drive

is in action.

The travel lock lever moves over the center to prevent

release by mistake.

(d) Turret Shield.

A metal shield surrounds the turret basket.

The shield keeps the turret basket swing area free of debris.

Also, it

gives crew members safe access from the rear of the vehicle to the driver's

station.

In addition, it holds stowage items.

The shield has a sliding

door which faces the rear. The door can be opened from inside or outside of

the turret. The door is closed whenever the turret is moving under power.

(e) Coax Machinegun Access Doors.

The coax machinegun access

doors give access to the gun when it is mounted in the turret. Foam rubber

seals on the door prevent toxic fumes from going into the turret. Also, the

doors protect from ballistic fragments.

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