Engine Cooling System; Generator Maintenance; Rust Inhibitor; Antifreeze - Hobart JET-EX 4 Operation And Maintenance Manual

6. Engine Cooling System

A. General
NOTE: Refer to the Ford Maintenance and Operator's Manual in Chapter 5 for detailed instructions on
servicing the engine's cooling system.
During warm weather operation, when plain water is used as a coolant, the cooling system MUST be
protected against rust by a rust inhibitor additive. During cold weather operation the system MUST be
protected against freezing. The system should NEVER be operated on plain water, without a rust in-
hibitor or antifreeze.
WARNING: WHEN REMOVING THE CAP FROM A VERY HOT RADIATOR,
COVER THE CAP WITH A THICK CLOTH AND TURN IT SLOWLY COUNTER-
CLOCKWISE TO THE FIRST STOP. WHEN PRESSURE IS COMPLETELY RE-
LEASED, PRESS DOWNWARD AND FINISH REMOVING CAP.
CAUTION: DO NOT ADD COOLANT TO AN EXTREMELY HOT ENGINE. THIS CAN RESULT IN A
CRACKED BLOCK OR CYLINDER HEAD.
B. Rust Inhibitor
The recommended rust inhibitor to use in this engine is Ford Rotunda 8A-19546-C.
C. Antifreeze
The recommended antifreeze for use in this engine is Ford Rotunda 8A19549-A. The coolant, when
mixed as equal parts of water and the recommended antifreeze, will provide protection to -35 degrees
F (-37 degrees C). If another coolant is used, it must meet Ford Specification ESE-M97B18-C.

7. Battery Service

Refer to the Ford Maintenance and Operator's Manual in Chapter 5 for battery service instructions.

8. Generator Maintenance

A. General
The only maintenance service required for the generator will be brush replacement, slip ring cleaning,
etc.
B. Brush Service
May 20/89
OM-2049
2-2
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