(b)
To use the flowmeter procedure, you install a flowmeter at the outlet of the standby EMDP and read the flow from it.
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(c) To use the amp-clamp and multimeter procedure, you put the amp-clamp adapter around one of the wires connected to a circuit breaker for the standby EMDP. You then read the current on the multimeter (that is connected to the amp-clamp adapter) and use Figure 609 to get the flow. One person can do this procedure from the Control Cabin.
NOTE: You can also use one of the three load wires connected
____ to standby hydraulic pump relay, R68, to put the amp-clamp adapter around.
B. Standard Tools and Equipment
(1)
AC Ammeter - Amp ranges 0-25 and 0-50 with a short circuit selector switch. The switch contacts should be the make-before-break type to prevent arcing during mode selection. The meter scales shall permit accurate reading to the nearest 0.10 amp on the 0-25 scale.
(2)
Cable Assembly, Hydraulic Leak Check - F80135-10 (Fig. 606)
Ammeter Wiring Harness for the Standby Hydraulic Pump
Figure 606
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D.
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(3)
Flowmeter - that can measure flows of 50 to 20,000 cc/min (a remote readout that you can put in the control cabin makes the job easier)
(4)
Digital Multimeter - Model 23, or model 8024B, John Fluke Mfg. Co. Inc, Redmond, WA
(5)
Amp-Clamp Adapter (current probe), AC current, Model Y8100, or model 801600, John Fluke Mfg. Co. Inc, Redmond, WA (used with digital multimeter)
References
(1)
AMM 12-12-00/301, Hydraulic Reservoir
(2)
AMM 24-22-00/201, Manual Control
(3)
AMM 27-21-00/501, Rudder and Rudder Trim Control Systems
(4)
AMM 27-21-24/501, Standby Rudder Actuator
(5)
AMM 29-15-00/201, Hydraulic Systems A, B, and Standby
(6)
AMM 29-15-81/201, Standby Hydraulic System Modular Unit
(7)
AMM 32-00-01/201, Ground Lock AssembliesAccess
(1)
Location Zones 101/102 Control Cabin 216/217 Main Wheel Wells
Prepare for the Internal Leak Check
S 866-175
(1) Supply electrical power (AMM 24-22-00/201).
NOTE: If you use a ground cart for electrical power, it must supply
____
a voltage of 114 to 116 volts ac at 400 -5 Hz.
Do not operate other electrical equipment during this test.
S 866-176
WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF ALL CONTROL
_______ SURFACES DURING THE LEAK CHECK. THE AILERONS, RUDDER, ELEVATOR, FLAPS, SLATS, SPOILERS, LANDING GEAR, AND THRUST REVERSERS CAN MOVE QUICKLY. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
WARNING: MAKE SURE THE GROUND LOCKS ARE INSTALLED ON ALL OF THE LANDING
_______ GEAR. WITHOUT THE GROUND LOCKS, THE LANDING GEAR CAN RETRACT AND CAUSE INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT.
(2) Make sure the ground locks are installed at the nose and main landing gear (AMM 32-00-01/201).
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