Page 7
60706-160 REV 3
3117-30
5. Shut off the engine.
4. Disconnect drive shaft (tumbling bar) power take-off end
first, then generator end.
MAINTENANCE
The following chart lists various symptoms of poor generator
operation with possible causes for them and the appropriate
corrective action. You will need a volt-ohm meter or test light to
check some of the causes. For some of the other causes you
will need to check generator speed. To check the generator
speed you can use the frequency meter on the generator
control panel.
CAUTION: Equipment Damage
Most electrical equipment in North America operates satisfac-
torily at frequencies between 59 and 61 Hz (cycles per
second.) Operating the generator at frequencies outside that
range may cause damage to the generator and/or to electrical
equipment driven by the generator.
GENERAL
Routine preventive maintenance minimizes costly repairs and
generator downtime. Before each use, inspect the generator:
gear case oil level should be correct, cooling vents and
screens should be clear, and generator mounting hardware
should be tight. Clean and inspect the generator after storing it
for long periods, and after using it in extremely dusty condi-
tions or in severe weather, such as rain or blowing snow.
LUBRICATION
The generator bearings are factory lubricated and sealed, and
require no further lubrication.
The splined generator input shaft should be cleaned and
lubricated with a thin film of grease before and after each use
of the generator.
The drive shaft (tumbling bar) requires greasing. Keep the
universal joints in the coupling shaft free from grease and dirt
buildup.
NOTE:
Do not over lubricate the universal joints.
See Figure 8 for recommended lubrication schedule for the
coupling shaft.
Check the generator gear case oil level before each use of the
generator. Maintain the oil level at oil level plug height. (Figure
6 illustrates oil level plug location.) The generator is shipped
with lubricant in the gear case. Specifications for gear case
lubricant are:
API Service: GL-5
Grade: SAE 85W-9O-140
Amount: 1 pint
The following kinds of oil are recommended for use in the
generator gear case: Mobil SAE 85W90-140 API Service GL-5,
Sunoco/DX XL80W90-140 Kendal Three Star 85W-140,
Amoco 85W140 or equivalent.
CAUTION: Equipment Damage
Do not overfill generator gear case. Overfilling causes over-
heating and oil seal failure.
Change the oil at least once every six months. Change it more
often if you use the generator in bad weather. Use the follow-
ing procedure to change generator gear case oil (see Figure
6):
1. Remove gear case breather. Soak breather in cleaning
solvent, then allow it to dry.
2. Remove oil level check plug.
3. Remove the oil drain plug, drain the oil into a clean oil
resistant container, 1 quart or larger. Check the oil for metal.
Fine metal dust in the oil does not indicate trouble, but metal
chips do. Dismantle the gear case and look for damaged
gears if you find metal chips in the oil.
4. Replace the oil drain plug. Refill the gear case through the
breather port with new oil of the recommended type. Fill the
case up to oil level check plug height. (It will take about 1 pint.)
Figure 8