Section XXXVI. MAINTENANCE OF DUMP BODY

C2, TM 9-2320-211-20

Section XXXVI. MAINTENANCE OF DUMP BODY -

M51, M51A1, M51A2

NOTE

2-241. General. D u m p body and hoist assembly

To completely drain the hydraulic system the

components consist of the all-steel welded dump body

hoist cylinder pistons must be completely

and subframe, the gear type hydraulic pump which is

extended or in the raised position.

bolted to the control valve assembly, the control linkage

for the power takeoff and control valve, and hydraulic

(2) Remove the power takeoff-to-pump propeller

lines and fittings for the system. In addition, troop seat

shaft from the pump shaft.

accessory kits designed to permit dump trucks to

(3) Remove the six capscrews and lockwashers

transport personnel are available. These kits consist of

securing the pump to the bottom flange of the control

seats and backs (called racks) with a tarpaulin covering

valve adapter. Remove the pump from the adapter.

held up by the necessary bows (fig. 2-220).

Figure 2-221. Right front view of hydraulic

pump mounting.

b. Installation (fig. 2-221).

(1) Position the hydraulic pump on the bottom

flange of the control valve adapter, and secure the pump

to the flange with the six capscrews and lockwashers.

Figure 2-220. Dump body troop seat accessory kit--

Tighten the capscrews.

M51, M51A1 and M51A2

(2) Install the power takeoff-to-pump propeller

shaft on the pump shaft.

(3) Replace the drain plug, and fill the hydraulic

system.

2-242. Hydraulic Pump.

2-243. Control Valve Assembly.

a. Removal (fig. 2-216).

a. Removal.

(1) Remove the drain plug. Drain the fluid from the

(1) Remove the hydraulic pump (para 2-242).

reservoir and hydraulic system.

(2) Remove the six capscrews (fig. 2-221) and