TM 55-2815-574-24
FIELD MAINTENANCE
ENGINE
TACHOMETER DRIVE REPAIR
INITIAL SETUP:
Tools and Special Tools
Equipment Condition (cont.)
General mechanic's tool kit
Main navigation mast removed
(WP 0179, Table 1, Item 130)
(TM 55-1925-205-23)
Chemical gloves (WP 0179, Table 1, Item 52)
Intake plenum assembly removed
Industrial goggles (WP 0179, Table 1, Item 54)
(TM 55-1925-205-23)
Operator's cab removed (TM 55-1925-205-23)
Engine cool to touch
Materials/Parts
Tachometer sending unit removed (WP 0167)
Engine lubricating oil, 10W
(WP 0178, Table 1, Item 24)
Gasket (WP 0180, Table 1, Item 49)
Personnel Required
Engineer 88L
References
TM 55-1925-205-10
Equipment Condition
Single channel ground and airborne radio system
(SINCGARS) antenna removed
(TM 11-5820-890-10-8)
REMOVAL
1.
Loosen jam nut (Figure 1, Item 6).
2.
Loosen bolt (Figure 1, Item 7).
3.
Remove clamp (Figure 1, Item 5) from blower cover (Figure 1, Item 1).
END OF TASK
DISASSEMBLY
1.
Remove housing assembly (Figure 1, Item 4).
2.
Remove tachometer drive (Figure 1, Item 3).
3.
Remove gasket (Figure 1, Item 2) from blower cover (Figure 1, Item 1). Discard gasket.
END OF TASK
0168-1