F.
Calibrate the QuadTech Model 1864 Megohmmeter Procedure
NOTE: Do this procedure before you do the resistance checks and each
____ time the megohmmeter is moved. This is necessary to make sure the megohmmeter is calibrated correctly and the adjustment knobs have not accidentally been moved.
S 826-059
(1)
Do these steps to calibrate the megohmmeter:
(a)
Disconnect all of the leads from the megohmmeter (if necessary).
(b)
Make sure the megohmmeter is insulated from any metal work stands.
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757 MAINTENANCE MANUAL
(c)
Make sure that you wear protective clothes (rubber gloves, insulated shoes, etc.).
(d)
Put the power switch to the POWER position.
(e)
Put the function switch to the DISCHARGE position.
(f)
Put the multiplier dial to any range setting.
(g)
Adjust the SET "infinity symbol" dial until the meter shows the infinity symbol.
(h)
Set the multiplier dial to the 10-1T range.
(i)
Adjust the SET "infinity symbol" HIGHEST RANGE dial until the meter shows the infinity symbol.
(j)
Connect the test probes to the megohmmeter.
G.
Fuel Pump Wire Terminal Assembly Inspection
NOTE: It is necessary to do these four procedures at each applicable pump:
-
Fuel Pump Wire Terminal Assembly Inspection
-
Fuel Pump Continuity Check
-Initial Insulation Resistance Check
-Final Insulation Resistance Check
S 016-011
(1)
Go out to the applicable fuel pump location.
S 216-013
(2)
At the applicable pump, do a visual inspection of the wire terminal assembly, electrical connector and wire insulation (Fig. 601, View A).
(a)
Look for these conditions: 1) Indication that fuel has leaked from the wire terminal assembly.
2) Indication that the terminal assembly or wire insulation is discolored because of too much heat. a) Clean the wire bundle caps per SWPM 20-60-01.
3) Indication of damage to the wire terminal assembly, for example: a) Bulges b) Bent flanges c) Broken screws d) Medium to heavy corrosion damage (reference the 757
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