Figure 4-4. Pump Control Valve

TM 10-3990-203-13&P

i. Place the ramp in position behind the towing

b. Take the pump handle from the storage tube

vehicle.

and position it in the pump beam (Fig. 4-5).

j. Attach the towbar eye to the towing vehicle

c. Place the pump control valve in the RAISE

hitch.

d. Raise the service apron above the work sur-

face.

e. Pull the ramp away from the work vehicle.

Pump control valve shall be in the LOWER

position while towing. Failure to do so may

f. Place the pump control valve in the LOWER

cause excessive pressure in the hydraulic

position.

pump and on the wheels and axle causing

extensive damage.

g. Place the pump handle into the storage tube

k. Tow the ramp to the storage site. Proceed

with an inspection of the ramp when at the storage

h. Take the towbar from the storage compartment

site.

(Fig. 2-2) and attach it to the ramp para. 4.1.1).

Figure 4-4.

Pump Control Valve - Location

4-5