TM 9-2320-280-20-3
11-198. BLOWER MOTOR AND HOUSING MAINTENANCE
This task covers:
a. Opening Blower Housing
d. Blower Housing Installation
b. Closing Blower Housing
e. Blower Motor Removal
c. Blower Housing Removal
f. Blower Motor Installation
INITIAL SETUP:
Applicable Models
Manual References
M997, M997A1, M997A2
TM 9-2320-280-24P
Tools
Equipment Condition
General mechanic’s tool kit:
l Rear cover panel removed (para. 11-188).
automotive (Appendix B, Item 1)
l Battery ground cable disconnected (para. 4-73).
Materials/Parts
Eleven lockwashers (Appendix G, Item 109)
Nut and lockwasher assembly
(Appendix G, Item 150)
a Opening Blower Housing
1. Remove nut and lockwasher assembly (3), washer (4), and capscrew (11) from blower housing (2) and
body (13). Discard nut and lockwasher assembly (3).
2. Release two latches (14) from blower housing (2) and evaporator duct (1) and swing blower
housing (2) open.
b. Closing Blower Housing
1. Swing blower housing (2) closed and secure to evaporator duct (1) with two latches (14).
2. Install blower housing (2) on body (13) with capscrew (11), washer(4), and nut and lockwasher assembly (3).
c. Blower Housing Removal
1. Perform step a.
NOTE
Prior to removal, tag leads for installation.
2. Disconnect four control box leads (6) from blower motor leads (5).
3. Remove capscrew (10), lockwasher (9), washer (8), and clamp (7) from blower housing (2). Discard
lockwasher (9).
4. Remove two capscrews (19) and lockwashers (18) from plate (20) and evaporator duct (1). Discard
lockwashers (18).
5. Remove two screws (21), lockwashers (15), and plate (20) from blower housing (2) and evaporator
duct (1). Discard lockwashers (15).
6. Remove four capscrews (16), lockwashers (17), and blower housing (2) from evaporator duct (1).
Discard lockwashers (17).
d. Blower Housing Installation
1. Install blower housing (2) on evaporator duct (1) with four lockwashers (17) and capscrews (16).
2. Install plate (20) on blower housing (2) and evaporator duct (1) with two lockwashers (15) and
screws (21).
3. Install plate (20) on evaporator duct (1) with two lockwashers (18) and capscrews (19).
4. Install clamp (7) and control box harness (12) on blower housing (2) with washer (8), lockwasher (9),
and capscrew (10).
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