TM 9-4910-663-12
(6) On part number 7458-2, the power service entrance is located
on the left side of the test stand. On part number 7458-4, an input
power conduit connector is provided at the lower rear section of the
test stand. Install the input power leads and connect the leads to
the input terminals of circuit breaker switch (CB1, fig 2-5) in the
Observe all high voltage precautions when making
power connections.
(7) Attach suitable outlet pipes to the air exhaust and air
intake, and to the battery vent located on the top left side of test
stand. The air exhaust will accept a 6-inch external diameter pipe;
the air inlet will accept a 6-inch internal diameter pipe. If air
exhaust and air intake pipes are not attached properly, the airflow
interlock switch will prevent test stand operation. All external
ducting is to be made with 6-inch round smooth ducting and elbows.
Keep all external ducting to a minimum length.
4-3. CHECKOUT. Apply power to the test stand and check to see that it
operates. The direction of drive motor rotation is not important; a
reversing switch is provided for reversing drive motor rotation as
necessary. With an input A-B-C phase rotation, setting reversing
switch (S1, fig 2-5) to the down position will cause clockwise rota-
tion of the output shafts, as viewed facing the output shafts.
Calibrate the front panel meters in accordance
Test Stand, United Manufacturing Models 7458, 7336, and Sun Electric
Model AGT-9.
LUBRICATION INSTRUCTIONS
Section II.
4-5. GENERAL. All test stand lubrication is performed at the opera-
tor maintenance level. Lubrication instructions are contained in
PREVENTIVE MAINTENANCE CHECKS AND SERVICES
Section III.
4-6. GENERAL. Refer to table 2-2. These instructions apply equally
at the organizational maintenance level.
4-7. MAINTENANCE. Except for replacement of indicator lamps, knobs,
and accessories items, organizational maintenance is limited to in-
spection, test, and service, and partial disassembly of the test stand
required to gain access to parts for performance of these actions.
Refer to all other maintenance to direct and general support maintenance
personnel.
Change 1
4-5