TM-9-2815-205-34
ENGINE WITH CONTAINER; MODELS 5063-5299, 5063-5392, 5063-5393, 5063-5395, 5063-5398, 5063-539F, 5063-539L
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE
AUGUST 1992
TM-9-2815-205-34 - Page 410 of 596
TM 9-2815-205-34
3-61. AIR PUMP
c. Test
(1) Air pump
AND IGNITION COIL ASSEMBLY REPAIR (Cont)
CAUTIO N
Do not exceed 18 volts direct current on air pump. Excessive voltage will overspeed air
pump and damage pump vanes.
NOT E
•
Install vanes, plate, and screws in air pump before testing.
•
Use fabricated test lead (16) to reduce a 24 Vdc power source to 18 Vdc. Connect lead
in series with positive terminal of power source.
(a) Connect an 18 V dc power source to air pump (4). Connect positive lead to terminal (17)
marked (+) and negative lead to unmarked terminal (18).
NOT E
•
Use digital multimeter to measure amperage.
•
Adapt pump outlet to fit a tire pressure gage or other suitable measuring device to
measure air output pressure.
(b) Measure air pressure and amperage. Air pressure at outlet port elbow (11) must be a
minimum of 10 PSI at 18 V dc. Pump must draw a maximum of 25 amperes.
(c) Remove power source from terminals (17 and 18).
3-280
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