TM-9-2320-280-34
TRUCK, UTILITY: M998 SERIES
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE
JANUARY 1996
TM-9-2320-280-34 - Page 7 of 1258
TM 9-2320-280-34
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Change 1
WARNING SUMMARY (Cont'd)
• Do not touch hot exhaust system components with bare hands. Severe injury will result.
• Diesel fuel is highly flammable. Do not perform any procedure near fires, flames, or sparks. Severe injury
or death may result.
• Ensure engine compartment is free of all tools and working material before starting engine. Failure to do
this may cause injury to personnel or damage to equipment.
• Do not remove surge tank filler cap before depressurizing system when engine temperature is above
190°F (88°C). Steam or hot coolant under pressure will cause severe burns.
• Do not drain oil when engine is hot. Severe injury to personnel will result.
• Allow transmission/transfer case to cool before performing maintenance. Failure to do this may cause
injury.
• When steam cleaning, protective clothing must be used. Failure to do this may cause injury.
• Air pressure must not exceed 50 psi (345 kPa) when air checking forward and direct clutch piston or
injury to personnel or damage to equipment may result.
• Direct all personnel to stand clear of vehicle before starting engine. Transmission slipping into gear may
cause injury to personnel or damage to equipment.
• When sanding fiberglass, personal protective equipment (respirator, goggles/shield, gloves, coveralls, etc.)
must be used. Failure to do this may cause injury.
• Do not operate heater in enclosed areas. Exhaust gases can kill. Make sure work area is well ventilated
and exhaust fumes are routed away from test area.
• Drycleaning solvent is flammable and will not be used near an open flame. A fire extinguisher will be
kept nearby when solvent is used. Use only in well-ventilated places. Failure to do this may result in
injury to personnel or damage to equipment.
• Always wear eye protection around R-12, or when servicing the air-conditioning system. Exercise extreme
care when handling R-12, direct contact between R-12 and skin may cause frostbite. Never smoke in
areas where R-12 is used or stored. Ensure adequate ventilation whenever R-12 is being discharged.
Personnel with a history of cardiac rhythm abnormalities should be made aware of potential aggravation
as a result of exposure to R-12. Failure to do so may result in injury to personnel.
• Do not attempt to connect servicing equipment while engine is running. Injury to personnel or damage to
equipment may result.
• Gaskets installed on some 6.2L engines assembled prior to 1991 may contain asbestos.
Gaskets should be
removed with a scraper or putty knife then disposed of IAW current directives.
Inhalation of asbestos
fibers can cause respiratory ailments.
• Air-conditioning system must be discharged prior to replacing components.
Failure to do this may result
in injury to personnel or damage to equipment.
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