(6) Remove all switch wires (20), nuts (21) and
c. Specific Gravity Test. Specific gravity testing of the
remove switches (22).
battery electrolyte determines the state of' charge in each
(7) Remove screws (23), washers (24), and wire
battery cell.
Use a hydrometer and thermometer,
assembly plug (25), from engine.
correcting the hydrometer reading for temperature (Note
(8) Remove nut (26), screw (27), bracket (28), and
below). A corrected specific gravity reading of 1.285 in
dampener (29), from box (30).
each cell indicates a fully charged battery. A specific
(9) Remove nut (31), feed wires (20) through hole
gravity reading of 1.225 or less in each cell indicates that
(32), and remove rubber washer (33), and steel washer
the battery must be recharged or replaced.
(34), from wire assembly plug (25).
b. Installation. Installation is in the reverse of removal.
NOTE
(Wiring Diagram fig. 1-3 for re-wiring).
A temperature-corrected specific gravity
measurement is obtained by adding 0.004 to
KEY TO FIGURE 4-2
the actual hydrometer reading for each 10
1 Screw
18 Clamp
degrees F (5.5 degrees C) the electrolyte is
2 Cover Plate
19 Ammeter
above 80 degrees F (26.7 degrees C), or
3 Wire
20 Wire
subtracting 0.004 from the actual hydrometer
4 Screw
21 Nut
reading for each 10 degrees F (5.5 degrees
5 Hourmeter
22 Switch
C) the electrolyte is below 80 degrees F (26.7
6 Screw
23 Screw
degrees C).
7 Dampener
24 Washer
8 Wire
25 Wire Assembly Plug
4-7. Control Panel (fig. 4-2)
9 Nut
26 Nut
a. Removal.
10 Washer
27 Bolt
(1) Remove cover plate screws (1). Lift off cover
11 Wire
28 Bracket
plate (2). Instruments and switches are attached to cover
12 Clamp
29 Dampener
back side.
13 Gauge, Oil Pressure
30 Box
(2) Remove wires (3), screws (4) and remove
14 Nut
31 Nut
hourmeter (5).
15 Washer
32 Hole
(3) Remove screws (6) and dampener (7).
16 Wire
33 Rubber Washer
(4) Remove wires (8), nuts (9), washers (10), wire
17 Nut
34 Steel Washer
(11), clamp (12) and remove oil pressure gauge (13).
(5) Remove nuts (14), washers (15), wires (16), nuts
(17), clamp (18) and remove ammeter (19).
4-4
