Operational Test Procedure.

TM 9- 2920- 224- 34&P

OPERATIONAL TESTING OF THE GENERATOR - CONTINUED

0011 00

Clean all polishing residue from brushes and commutator by blowing with compressed air.

Disconnect generator brush run--in setup.

2. Operational Test Procedure.

NOTE

Operational test results specified are for testing at room

ambient temperature (about 800 F).

a. Generator (11642898) must have a forced--air supply ducted to air inlet housing (1) for cooling throughout

operational testing. Air supply should deliver about 150 cu. ft. per minute.

b. Generator (10889713) must have connector (2) on its cooling fan motor electrically connected to test setup

power supply (A pos, B neg). Fan motor will draw about 11 A at 24 V dc.

Mechanical connection to generator drive shaft (3) must couple generator to drive mechanism (as in test

stand) capable of turning generator armature at 6500 rpm (counterclockwise) with generator producing 300 A

at 30 V dc.

0011 00- 2