TM 5-5420-202-34
AIR CLEANER FAN REPAIR (Sheet 4 of 7)
CLEANING AND INSPECTION:
Dry cleaning solvent P-D-680 is toxic and flammable. To prevent personal
injury, wear protective goggles and gloves and use only in a well-ventilated
area. Avoid contact with skin, eyes, and clothes and don't breathe vapors.
Do not use near open flame or excessive heat. The flashpoint for Type #1
Dry Cleaning Solvent is 100F (38C) and for Type #2 is 138F (50C). If you
become dizzy while using cleaning solvent, get fresh air immediately and get
medical aid. If contact with eyes is made, wash your eyes with water and get
medical aid immediately.
1.
Using dry cleaning solvent (Item 12, Appendix B) and rag, clean all parts.
Compressed air used for cleaning purposes will not exceed 30 psi.
Use only with effective chip guarding and personnel protective
equipment (goggles/shield, gloves, etc.).
2.
Dry parts with compressed air.
3.
Check both leads for fraying, torn insulation or oil soakage. Replace leads if damaged.
4.
Using multimeter (ohms scale), check leads for continuity. If continuity does not exist
replace leads.
5.
Check cover and impeller for damage. If parts are damaged replace them.
Secure air cleaner blower motor (A) to
1.
TESTING:
bench with vise so motor is stable. Using
screwdriver install screw and lockwasher
(B), clip (C) and brush lead (D) to motor
(A) as shown.
2.
Connect motor to 24 volt power source
with (+) connection to lead (E) and (-)
connection to lead (D).
Using multimeter, check voltage for
3.
a reading of 24 volts.
Using multimeter, check amperage for
4.
--
--
a reading of not more than 7.5 amps.
Disconnect motor from power source.
5.
If voltage or current readings do not
conform to those stated in steps 3 and
4, replace motor.
6.
Remove motor from vise.
Go on to Sheet 5
4-5