pins or more.
(d) Do a check on the dc pins.
CAUTION: DO NOT USE FORCE TO PUSH THE WEAR GAGE ON THE PINS.
_______ THE WEAR GAGE IS A GO/NO GO GAGE AND SHOULD NOT FIT OVER THE PIN. TOO MUCH FORCE ON THE PIN CAN CAUSE DAMAGE.
1) Try to put the wear gage F70284-3 on the dc pin E.
2) Do this check again for the pin F.
3) Replace the support base if you can install the gage on one
pins or more.
(e) Remove the DO-NOT-CLOSE tag and close the GND SERVICE circuit breaker on the panel P6-11.
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A
737-300/400/500MAINTENANCE MANUAL
TASK 24-41-11-286-012
4. External Power Receptacle Neutral Pin to Grounding Stud Continuity Check
_________________________________________________________________________
A. General
WARNING: STATIC ELECTRICAL SHOCK HAZARD MAY EXIST IF THE AIRPLANE MEETS
_______ THE THE TEST REQUIREMENTS. MAKE SURE THE AIRPLANE HAS SUFFICIENT ELECTRICAL GROUNDS BEFORE DOING MAINTENANCE.
(1)
Do this check when the usual procedure to refuel the airplane does not use a static ground cable to the earth-ground facility connection point.
B.
Special Tools and Equipment
(1)
Low Resistance Ohmmeter
C.
References
(1)
WDM 24-41-11, 24-41-12
(2)
SSM 24-40-01, 24-40-02
D.
Access
(1)
Location Zone
202 Lower Nose Compartment
216/217 Left/Right Main Wheel Well
(2)
Access Panel
1101 External Power Receptacle Door
E.
Prepare to check the continuity between the receptacle neutral pin and the grounding stud.
S 866-013
(1)
Remove electrical power from the airplane (AMM 24-22-00/201).
S 016-014
(2)
Open the door 1101 for the external power receptacle.
F.
Check the continuity between the receptacle neutral pin and the grounding stud.
S 766-015
(1)
Use the low resistance ohmmeter to measure the resistance from the neutral pin on the receptacle to the grounding stud in the main wheel well.
(2)
Make sure the resistance does not exceed 0.1 ohms.
S 866-016
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A 737-300/400/500MAINTENANCE MANUAL
WHEEL WELL TORQUE BOX VERTICAL SUPPORT
SEE A
VERTICAL SUPPORT
GROUNDING STUD
MAIN GEAR WHEEL WELL GROUNDING STUD LOCATION
A
Static Grounding Point Location
Figure 602
E82568
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737-300/400/500MAINTENANCE MANUAL
G. Put the Airplane back to its usual condition. S 416-019
(1) Close the door 1101 for the receptacle.
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