P - 9 - T M - 4 5 7 - 3 5 T.O. 35C2-3-442-2
TM-07464A-35 TM 5-6115-457-34
2, If gauges G1 and G2 do not indi-
8-115. TEST AND ADJUSTMENT.
cate the required pressures, adjustment of
valve screws (6, figure 8-26) on the arma-
a. Test equipment required.
ture and coil assembly (9) will have to be
made. Proceed as follows.
1. Hydraulic pump (310 to 320 psi
at 2 GPM).
(a) Remove cover (3) and
place the governor actuator in a catch pan.
2. Power source (120V 60 Hz).
The catch pan should drain back to the
3. D.C. power source (0 to 1 AMP
24 V. D.C. ).
(b) Loosen lock nuts (5, figure
4. Switch, 2 pole, 3 position, 1 amp
8-26) on each valve adjustment screw (6).
(c) To adjust pressure at gauge
Meter (2) (0 to 800 ma milliam-
Gl, insert an allen wrench in screw (6) on
coil L1 adjustment screw (6) and rotate
clockwise (or in) to reduce pressure on
6. Meter (1) (0 to 60 volts A.C.).r
gauge G1. Rotating screw (6) counterclock-
wise will increase pressure on G1.
7. Resistor (fixed -5000 ohms,
(d) Adjust pressure at gauge G1
by rotating screw (6) on coil L2 in the same
8. Gauge (3) (pressure 0 to 400 psi).
manner as pressure adjustment on coil L1
b. Actuator Valve and Piston Test.
Connect the governor actuator unit to test
proceed as follows:
Adjustment of one side (Ll) will in
some degree effect the opposite side
1. With 24 vdc supply off, turn on
(L2); therefore, several adjustments
the hydraulic pump drive and adjust the
of both sides will be required to ob-
pressure to port P until G3 indicates 320
tain the setting specified in step c.
10 psi. Adjust pressure by setting the
(e) Tighten lock nuts (5).
relief valve in the pump.
(f) Turn power supply on and
position switch S1 to B and adjust 24 vdc
The actuator output shaft shall be
power source until MA1 and MA2 indicate
in the fully extended position (throttle
350 20 ma. The actuator output shaft
shall remain in the extended position.
open). Gauge G1 shall indicate 150
Gauge G1 shall indicate 150 10 psi.
10 psi. Gauge G2 shall indicate
Gauge G2 shall indicate 200 10 psi.
200 10 psi.