temperatures as low as -65°F. without freezing. An
acceptable hydrometer reading of 1.210 - 1.220 at 80°F will
be obtained from a fully charged battery (2.0-2.2 volts dc
c. Battery Preparation
Do not smoke or use an open flame in
the vicinity when servicing batteries.
Batteries generate hydrogen during
charging, a highly explosive gas. A
bum will result when
electrolyte is spilled on the skin or
Use extreme care in
handling while filling batteries.
(1) Remove cell caps and fill battery cells with
electrolyte to 38 inches above the plates.
(2) Make sure vent holes in cell caps are open and
3-83. Battery Tray Replacement
To replace the battery tray, remove batteries as described in
paragraph 3-82a. Remove screws (9, fig. 3-4) and
lockwashers (10) which secures battery tray (11) in
position, and install new battery tray.
3-84. Slave Receptacle Replacement.
To replace the slave receptacle, see figure 3-4 and proceed
a. Disconnect battery negative cable (1).
b. Remove six screws (12) which secure receptacle
box (13) to housing and tilt box forward to gain access to
clamps, harness ties and tag for ease of Installation.
Remove four screws (IS) and nuts (16) which
secure slave receptacle (I), and remove receptacle.
install receptacle in reverse order of removal.
Section X. MUFFLER AND EXHAUST PIPES AND BREATHER SYSTEM
Thin section contains information on the muffler and
exhaust pipes and breather system of the engine generator
set. The muffler and exhaust pipes provide a method for
expelling exhaust gases from the engine generator set. The
exhaust pipe allows the exhaust gases from the engine to he
discharged from an opening above the grille. The discharge
opening is covered by a cap that is opened by exhaust
pressure when the engine generator set is running. The
breather system provides a method for returning oil to the
crankcase and improving the atmosphere around the engine
generator set. Accumulated oil residue and gases in the valve
cover pass through an oil separator which separates the oil
and the gases. The oil is returned to the crankcase and the
gases exhaust into the air cleaner inlet. The breather system
is removed as outlined in paragraph 3-87.
3-86. Muffler and Exhaust Pipe Replacement.
To replace the exhaust pipe, see figure 3-12 and proceed as
Allow exhaust pipe to cool if engine has
Loosen nut (1) from screw (2) and remove weather
b. Loosen nuts (4) which secure 0-bolt (6) and
bracket (7) to nozzle (8) and muffler (9) pipes, and slide
0-bolt (6) and bracket (7) toward muffler.
Remove screws (10) which secure nozzle (8) to
housing. Place 0-bolt (6) on muffler (9) pipe and remove
d. Loosen nuts (11) which secure 0-bolt (13) and
bracket (14) to muffler (9) and exhaust pipe (15). Place
0-bolt (13) with bracket (14) on muffler pipe and remove
muffler and both 0-bolt assemblies.
Disconnect exhaust pipe (15) from engine and
remove exhaust pipe.
f. Install new exhaust pipe in reverse order of removal.
3-87. Breather System Replacement.
To replace the breather system. see figure 3-12.1 and
proceed as follows:
Loosen clamps (1) and disconnect hose (2) from oil
separator (4) and elbow (3).
b. Loosen clamps (5) and disconnect hose (6) from oil
separator (4) and valve cover crankcase breather.
c. Loosen clamps (7) and disconnect hose (8) from oil
separator (4) and air cleaner inlet (9).
d. Loosen clamp (10) and slide out oil separator (4)
Remove nuts (1 1). camp and bracket (10), nuts
(12), and screws (13).
f. Install breather system in reverse order of removal.