TM 9-4940-568-34
3-120
3-35. CRANE CONTROL VALVES REPAIR (Continued)
(6) Aline matchmarks and install preformed
packing (10) and lever end cap (4) on
valve body (7) with four allen head
screws (9).
(7) Install seal washer (6) and screw (5) in
lever end cap (4).
(8) Apply sealing compound to threads of
lever (3).
(9) Install lever (3), nut (1), and knob (2) on
lever end cap (4). Tighten nut (1)
against knob (2).
d.
Adustment
NOTE
All control valves must be
installed and FRS operational
prior to adjustment.
All control valves are adjusted in
the same manner using the
approximate time.
(1) Adjust set screw (15) while holding the
control valve lever (3) fully in the
prescribed direction to obtain the proper
time in accordance with the chart below
and tighten jam nut (13).
(2) Install tamper proof cap (11) and tighten
until nut on the end of cap breaks off.
END OF TASK
Follow-On Maintenance
Install three function
manual control valve
(para 3-11).
Install five function
manual control valve
(para 3-31).
Electric solenoid valves
removed (para 3-37).
VALVE
DIRECTION
TIME
Outrigger Extension
Fully Extended
16 sec. 1 sec.
MAST
Fully Raised
15 sec. 1 sec.
Fully Lowered
16 sec. 1 sec.
Boom*
To Horizontal
26 sec. 2 sec.
Telescope**
Fully Retracted
20 sec. 1 sec.
* From Maximum Elevation
** From Fully Extended
11
15
13
