ONL773LW4 5/21
21
GLOW PLUGS
1. Each cylinder is supplied with a glow plug which
serves to heat the combustion chamber.
2. To check the glow plugs, loosen the current
carrying flat wire between the plus-poles of the
glow plugs (
Figure 14
). Connect a D.C. test bulb
between the plus-pole of the battery and the
plus-pole of the glow plug. If the bulb lights up,
the glow plug is functioning properly.
3. Check all glow plugs and replace any faulty ones.
Figure 14:
Glow plugs.
BOOSTER BATTERIES
CAUTION: Battery gas can explode.
Keep all flames and sparks away from batteries.
1. Before changing or using booster batteries, check bat-
tery electrolyte level. Add distilled water if necessary.
2. Booster and main batteries must have the same
voltage rating.
3. First, connect positive (+) terminal of booster
battery to positive (+) terminal of main battery.
Then, connect negative (-) terminal of booster
battery to ground on the engine block (
see Figure
15
).
4. Remove booster battery after starting engine.
5. Sealed batteries: See manufacturer charging and
booster instructions.
SP 18-19. BATTERY CARE
1. Check electrolyte level every 50 hours or once per
month. Add distilled water to manufacturer’s
recommended level.
2. Batteries, cables and cable terminals should
be checked and cleaned every 100 hours.
Clean corrosion with a water and baking soda
solution. Flush with clean water. Tighten terminals
and grease them to inhibit corrosion.
3. Check the battery condition with a hydrometer every
250 hours.
SP20. WINTERIZING / OUT-OF-SERVICE
1. Industrial sets:
a. Drain and flush the radiator and cooling system.
Leave dry or refill with antifreeze-water mixture.
If refilling, start the engine and run to circulate
the antifreeze.
b. Fill the fuel tank or add biocide as per
manufacturer’s instructions.
c. Seal the air cleaner inlet, exhaust opening,
crankcase breather pipe, and fuel tank vent with
plastic bags and tape.
d. Store the set in a dry, protected place. If unit must
be stored outside, be sure it is well protected with
a cover.
e. Change the crankcase oil and filter.
f. Loosen the alternator belt.
g. Disconnect and clean battery. Remove to warm
storage place if possible.
h. Clean outside of unit. Paint any scratched or
chipped surfaces. Put corrosion preventative on
all exposed metal surfaces.
Figure 15:
Battery connections.
Servicing
