TM 10-7310-281-13&P
MODERN BURNER UNIT (MBU)
0036 00
DIRECT SUPPORT MAINTENANCE PROCEDURES
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Remove the main power switch (1) from the power converter. Test for continuity through the power switch
with a multimeter. If the power switch is not found to be defective, check for continuity through the power
cord. If both are not found to be defective, the entire power converter should be replaced.
To install a new main power switch (1), install the short wire (8) set aside earlier on the switch terminal (9)
labeled LOAD. Secure with screw.
Place the switch (1) in position in the power converter’s front panel. Be sure to position the switch so that
the screw terminal (9) labeled LOAD is facing up and out of the case while the terminal (11) labeled LINE
is facing down into the power converter case.
Install the hex nut with protective rubber cap (4) on the front of the power switch (1).
Connect the spade terminal (5) to the lug (19) on the AC Filter (10).
Connect the second wire (16) to the switch terminal (11) marked LINE and secure with screw.
Secure power converter cover (2) with screws and lockwashers (3).
Replacing the power cord. To replace the power cord, remove the screws and lockwashers (3) that
secure the power converter cover (2).
Remove the main power switch (1) as described above.
Take note of the color of the power cord wires and where they are connected to ensure that the cord is
reconnected properly.
Disconnect the power cord spade terminal (12) from the lower lug (20) of the AC Filter (10).
Loosen and remove the hex nut (13) on the grounding stud (14) and remove the power cord lead (15).
Loosen and remove the plastic hex nut (19) on the inside of the power converter front panel that secures
the power cord strain relief (17).
Pull the entire power cord assembly (18) out of the power converter. Remove the strain relief (17) from
the power cord (18).
Install the strain relief over a new power cord (Note that the strain relief must be replaced if it shows signs
of wear or damage).
Insert the power cord (18) and strain relief assembly (17) through the hole in the front panel of the power
converter. Secure with plastic strain relief hex nut (19).
Connect the spade terminal (12) of the BLUE wire to the lower terminal (20) of the AC Filter (10). Connect
the GREEN/YELLOW wire (15) to the grounding stud (14) on the inside surface of the front panel. Secure
with nut (13) removed earlier.
Reinstall the main power switch (1) as described above and connect terminal (16) of the BROWN power
cord wire to the terminal (11) on the power switch labeled LINE. Secure with screw.
Reinstall the power converter cover (2) and secure with screws and lockwashers (3) removed earlier.
