ON ON ON
L STALL R LDG HYD GEN OFF OFF OFF
a a
a WING DUCT YAW DMPR EQUIP COOL ANTI ICE LEAK L FWD
WINDOW/ FUEL R AFT PROBE HEAT QTY
M10191 GENERATOR FIELD AND MISCELLANEOUS TEST PANEL, M10398
HYDRAULIC CONTROL PANEL (P61)
GH
Hydraulic Motor-Driven Generator System Component Location Figure 501 (Sheet 2)
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 S 615-007
 (6)  If you use the Alternating Current Motor Pump (ACMP) to pressurize the hydraulic system, do these procedures:
 (a)  
Pressurize the left hydraulic system and the right hydraulic system with the ACMPs (AMM 29-11-00).

 (b)  
Put the PTU switch on the P61 panel to the ON position.

 E. Procedure
 S 715-008
 (1)  Do a test on the HMG system (Fig. 501):
 (a)  
Push the DISPLAY STATUS switch on the EICAS display select panel P9.

 (b)  
Hold the GND PROX/HYD GEN switch on the P61 panel in the HYD GEN position.

 NOTE: THE PITOT HEATER ANNUNCIATOR LIGHTS MAY FLASH WHILE
____
 PERFORMING THIS TEST.

 (c)  
Make sure HYD GEN ON and HYD GEN VAL show on the EICAS lower display.

 (d)  
On the EICAS maintenance page, make sure the ELEC/HYD display shows: 1) HYD GEN DC-V 28 |4 2) HYD GEN AC-V 115 |5 3) HYD GEN FREQ 400 |5

 (e)  
Release the GND PROX/HYD GEN switch (P61) and make sure these values are shown on the EICAS maintenance page:

 NOTE: On airplanes with 10 KVA HMG, the HMG will continue to
____ operate for approximately 15 seconds after the test switch is released.
 1) HYD GEN DC-V 0 |4
 2) HYD GEN AC-V 0 |5
 3) HYD GEN FREQ 0 |5

 (f)  Make sure HYD GEN ON and HYD GEN VAL do not show on the EICAS lower display.
 S 845-010
 (2)  Put the Airplane back to its Usual Condition
 (a)  
If you used the ACMPs:
 1) Put the PTU switch to the OFF position.

 (b)  
Remove the hydraulic power if it is not necessary (AMM 29-11-00).

 (c)  
Remove the electrical power if it is not necessary (AMM 24-22-00).

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH HYDRAULIC MOTOR GENERATOR ú

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MAINTENANCE MANUAL

CENTRAL HYDRAULIC SERVICE CENTER
SEE B
LEFT WHEEL WELL SEE A
HYDRAULIC MOTOR GENERATOR SHUTOFF VALVE
SEE E HYDRAULIC FLOW
HYDRAULIC FLOW LIMITER
LIMITER (LOWER RATED) (HIGHER RATED)
HYDRAULIC MOTOR
GENERATOR 
ACCUMULATOR 
HYDRAULIC MOTOR 
SEE  C  GENERATOR 
CHARGING LINE  SEE  D 

FWD HYDRAULIC LINE LEFT WHEEL WELL
A UNION
CHARGING LINE SUPPORT
CLAMP PRESSURE GAGE ACCUMULATOR
DUST CAP SUPPORT CLAMP
UNION CHARGING VALVE
CHARGING LINE
CENTRAL HYDRAULIC SERVICE CENTER
HYDRAULIC MOTOR GENERATOR ACCUMULATOR
BC
Hydraulic Motor Generator System - Component Location Figure 501A (Sheet 1)
A51160
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MAINTENANCE MANUAL

P11 PANEL
P6 PANEL
FLIGHT COMPARTMENT
MOUNTING BOLT (3 LOCATIONS)
MANUAL OVERRIDE ARM POSITION INDICATOR MISCELLANEOUS TEST PANEL
SEE F
P61 PANEL
GENERATOR FIELD AND HYDRAULIC CONTROL PANEL, M10191
　
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