Rotating Ladder Turntable -706880090

TM 5-4210-233-14&P-1

2-15. EMERGENCY AERIAL PROCEDURES - Continued

c. Rotating Ladder Turntable.

WARNING

The ladder must be secured to prevent

rotation of turntable in either direction

before the hydraulic motor and brake

assembly are removed. This prevents the

ladder from rotating out of control when

brake is removed. The guy ropes should be

placed on the lower chords of the ladder

sections.

(1)

Secure ladder with guy ropes to prevent turntable

rotation when brake is removed.

(2)

Remove the hydraulic motor and brake assembly

from planetary drive.

(3)

Use the hand crank provided (located under the

ladder control panel) to align ladder with bed locks.

NOTE

Be sure to position ladder in line with bed

locks; ladder cannot conveniently be lifted

manually.

Lowering Ladder.

(1)

Turn the black knob on the hydraulic hoist manifold

block, located under the step at the base of the

aerial ladder. Turn the knob counterclockwise.

This will slowly lower the ladder.

(2)

To stop lowering the ladder, tighten the black knob.

Raising Outriggers.

(1)

Remove cover on each jack stand. Loosen the two

bolts slowly and evenly, one revolution at a time.

This breaks the seal on the cylinder inlet and allows

oil to be released.

(2)

The outriggers can now be lifted manually.

(3)

Tighten the two bolts. This will keep the outriggers

raised after a vacuum forms in the cylinders.

NOTE

The outriggers can be manually retracted by engaging the

hydraulic valve and pushing in the corresponding outrigger

beam.

2-62