SECTION IV OPERATING INSTRUCTIONS - TM-10-3990-203-13-P0015

TM 10-3990-203-13&P

SECTION IV

OPERATING INSTRUCTIONS

f. Remove wheel blocks and tow to the work area;

4. RAMP USE

25 MPH on improved roads or 5 MPH cross country.

4.1 TOWING

g. Reverse the procedure to remove the towbar

and put it in the storage compartment before putting

NOTE

the ramp in position for use.

General operating instructions shall be on an

4.2 POSITION FOR USE

instruction plate attached to the ramp near the

hydraulic pump (Fig. l-l).

4.2.1 The ramp can be setup in a direct alignment

with the work surface or in an indirect alignment

4.1.1 Remove towbar from the towbar storage com-

with the work surface (Fig. 4-3).

partment on the right side of the ramp (Fig. 1-1).

Attach the towbar to the entry apron of the ramp

(Fig. 4-l).

4.2.2 Direct Alignment

a. Block the wheels to prevent the ramp from

a. Position the high end of the ramp towards the

rolling and elevate the entry apron 18 - 24 inches

work surface (Fig. 4-3).

and support it with a block.

b. Remove the pump handle from the pump stor-

b. Place the towbar over the entry apron and

age tube (Fig. 4-2).

align the T-locks with the slots in the apron. Place

the towbar into position with the block seated in the

plate cutout (Fig. 4-l).

c. Insert the pump handle thru the pump access

port and into the pump beam (Fig. 4-5).

NOTE

d. Place the pump control valve in the RAISE

position (Fig. 4-4).

The T-locks should be threaded down as far

as possible.

e. Pump up the high end of the ramp so that it is

2 -3 inches above the work surface.

c. Rotate the T.-locks 90 and pull upward on the

roll pins, engaging the ends of the clamps into the

f. Butt the apron stops (Fig. 2-2) up to the outer

round holes on either side of the slots.

edge of the work surface.

g. Place the pump control valve in the LOWER

position (Fig. 4-4). The ramp will then settle to rest

upon the work surface.

T-lock handles must be tightened securely.

Check for tightness and compression of lock

washers.

d. Secure the towbar by turning the handle on the

Keep the pump control valve in the LOWER

lock downward.

position while the ramp is being used. Failure

to do so may cause excessive pressure in the

hydraulic pump and on the wheels and axle

e. Attach the eye of the towbar to the vehicle

causing extensive damage.

hitch.

h. Place the pump handle back into the storage

tube (Fig. 4-2).

Pump control valve shall be in LOWER posi-

i. Attach the hooks on the safety chains to the

tion while the ramp is being towed.

frame of the work vehicle.

4-1