Generator Maintenance; Cleaning; Adjustment; Drive Belts - Hobart 140GT17P Operation And Maintenance Manual With Illustrated Parts List

OM-2029
NOTE: If antifreeze solution is not premixed, pour required antifreeze in first. Install corrosion inhibitor
according to directions on container.
(3) Start the engine and allow it to idle. Add coolant if trapped air escapes from the system and the
coolant level falls.
(4) Continue to check coolant level until the engine reaches operating temperature. Add coolant, if
needed, to fill to the required level, 1 inch below filler neck. Install radiator cap.
NOTE: It is good practice to attach a card, indicating the cooling system contents, and the date serviced
to the radiator filler neck.

7. Generator Maintenance

The 400-Hz generator requires no maintenance or service other than periodic cleaning.
The unit is brushless, and bearings are permanently lubricated and sealed.
A. Cleaning
The generator may be cleaned by careful use of compressed air and/or a good, SAFE commercial
cleaner. Steam cleaning of the generator is no longer recommended because the use of steam and
harsh chemical compounds may result in damage to insulation and other generator components.
WARNING: ELECTRIC SHOCK AND FIRE CAN KILL OR INJURE! BE SURE
THE UNIT IS COMPLETELY DRY BEFORE OPERATING. DO NOT USE A
FLAMMABLE SOLVENT.
B. Adjustment
The generator itself requires no adjustment. Adjustment procedures for generator controls will be cov-
ered in Section 2-3.

8. Drive Belts

Twin belts from the crankshaft pulley are used to drive the alternator and water pump. For proper engine
operation these belts should be in good condition and at proper tension at all times.
A. Checking Belt Tension
Check belt tension every 200 hours of engine operation, or bi-weekly. Belts which are too tight are de-
structive to bearings of the alternator and water pump. A loose belt will slip and cause inefficient op-
eration of the alternator and/or the water pump.
To check belt tension, press each belt firmly with the thumb at a point halfway between the alternator
pulley and the crankshaft pulley. A properly adjusted belt should deflect about 3/8 inch.
B. Belt Adjustment
To adjust belt tension, loosen the alternator mounting bolts and change the position of the alternator.
Upon obtaining the correct tension, re-tighten both alternator mounting bolts.
When new belts are fitted, it is necessary to run the engine for a short period to allow the new belts to
settle into the grooves of the pulleys and thus show any initial stretching that is going to occur.
Recheck belt tension after running the engine and adjust as necessary. Twin drive belts should be
changed in pairs.
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September 30/89 Revised