Figure 2-4. Control valve removal and installation.

(5) Plug ends of hydraulic lines to prevent

2-9. Control Valve

entry of foreign matter.

a. Removal. (fig. 2-4).

(6) Remove the three shoulder screws and

(1) Disconnect

battery

and

discharge

nuts to disconnect yokes from control valve plungers.

(7) Remove the four control valve mounting

(2) Remove control valve cover panel to gain

screws, lock washers and nuts.

access to control valve and connections (TM 10-3930-

(8) Remove control valve from lift truck.

620-12).

Warning: Use an approved cleaning

(3) Identify and tag each hydraulic line

according to where it connects.

solvent.

(4) Disconnect hydraulic lines from control

(9) Clean exterior of control valve using an

valve.

approved solvent.

Figure 2-4. Control valve removal and installation.

b. Installation.

(4) Check adjustments described in c, below,

c. Adjustment.

(1) Install control valve on lift truck center

(1) Adjust lift plunger section relief valve as

plate.

(2) Unplug all control valve openings and

(a) Disconnect battery and discharge

reconnect hydraulic lines to appropriate ports. (fig. 2-4).

(3) Connect yokes to control valve plungers.

removal and installation.

2-7