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Page Title:
Figure 4-36. Control panel engine controls and instruments, exploded view. |
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 1.
Nut
11.
Nut
21.
Knurled nut
2.
Lock washer
12.
Lock washer
22.
Starter pushbutton switch
3.
Nut
13.
Clamp
23.
Screw
4.
Lock washer
14.
Oil pressure gage
24.
Switch handle
5.
Clamp
15.
Panel lamp
25.
Thin nut
6.
16.
Nut
26.
Battery disconnect switch
7.
Nut
17.
Lamp holder
27.
Nut
8.
Lock washer
18.
Panel lamp spacer
28.
Lock washer
9.
Clamp
19.
Knurled nut
29.
Starter disengage relay
10.
Water temperature gage
20.
Ignition switch
Figure 4-36. Control panel engine controls and instruments, exploded view.
(3) Use an open-end wrench to remove the tachometer drive from the overspeed governor drive mechanism.
b. Cleaning and Inspection.
(1) Wipe the exterior of the tachometer hourmeter and the tachometer shaft with a cloth dampened with
cleaning solvent (fed. spec. PD-680).
(2) Wash the tachometer drive with cleaning solvent (fed. spec. P-D-680). Dislodge all hardened and caked
grease from the drive.
(3) Inspect the tachometer for broken dial glass, defaced or illegible dial markings, binding or sticking pointer,
jammed digital hour counter, or evidence of entry of moisture. Replace a damaged tachometer-hourmeter.
(4) Inspect the tachometer drive for cracks, chipped, or broken gear teeth, rough or catching operation, and
damaged threads; replace a damaged tachometer drive.
(5) Inspect the tachometer shaft for kinks, broken sheathing, binding or catching rotation of the internal shaft,
and damaged threads on the
4-40
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