Armstrong World Industries A50CU - Manual (Page 38)

AR-EXP-CUMMINS-07-00 OWNERS MANUAL
Page 38
9. ENGINE
9.1. CHECKS DURING OPERATION
While running, make the following checks to see that all
parts are working correctly.
Radiator Cooling water (Coolant)
To avoid personal injury:
 Do not remove radiator cap until coolant temperature
is well below its boiling point. Then loosen cap slightly
to the stop position, to relieve any pressure, before
removing cap completely.
When the engine overheats and hot coolant overflows
through the overflow pipe and cannot be stopped, stop the
engine immediately and make the following checks to deter-
mine the cause of trouble:
1. Check to see if there is any coolant leak;
2. Check to see if there is any obstacle around the cooling
air inlet or outlet;
3. Check to see if there is any dirt or dust between radiator
fins and tube;
4. Check to see if the fan belt is too loose;
5. Check to see if radiator water pipe is clogged; and
6. Check to see if anti-freeze is mixed into coolant in warm
seasons.
Fuel
To avoid personal injury:
• Fluid escaping from pinholes may be invisible. Do not use
hands to search for suspected leaks; Use a piece of card-
board or wood, instead, If injured by escaping fluid, see a
medical doctor at once. This fluid can produce gangrene or
a severe allergic reaction.
• Check any leaks from fuel pipes or fuel injection pipes.
Use eye protection when checking for leaks. Be careful not
to empty the fuel tank. Otherwise air may enter the fuel
system, requiring fuel system bleeding.
While the engine is run within the rated output range:
• The color of exhaust remains colorless.
• If the output slightly exceeds the rated level, exhaust may
become a little colored with the output level kept constant.
• If the engine is run continuously with dark exhaust emis-
sion, it may lead to trouble with the engine.
• Immediately stop the engine if;
• The engine suddenly slow down or accelerates.
• Unusual noises suddenly appear.
• Exhaust fumes suddenly become very dark.
9.2. MAINTENANCE SCHEDULE
Perform maintenance at whichever interval that occurs first.
At each scheduled maintenance interval, perform all previ-
ous maintenance checks that are due for scheduled main-
tenance.
Daily or Refueling - Maintenance Check (4)

Air Intake Piping - Inspect

Air Tank and Reservoirs - Drain

Cooling Fan - Check/Correct

Crankcase Breather Tube - Inspect

Drive Belts - Check/Correct

Engine Coolant Level - Check/Correct

Engine Lubricating Oil Level - Check/Correct

Fuel-Water Separator - Drain
Every 250 Hours or 3 Months - Maintenance
Check
(1, 4)

Air Cleaner Restriction - Check/Correct

Air Compressor Mounting Hardware - Check/Correct

Charge Air Cooler - Check/Correct

Charge Air Piping - Check/Correct

Fuel Injection Pump Mounting Hardware - Check/
Correct

Lubricating Oil and Filters - Change

Radiator Hoses - Check
Every 500 Hours or 6 Months - Maintenance
Check
(2, 3, 4)

Engine Coolant - Antifreeze Check

Fuel Filter, Canister-Type - Replace

Fuel Filter, Spin-on-Type - Replace

Lubricating Oil and Filters - Change
Every 1000 Hours or 1 Year - Maintenance Check
(4)

Cooling Fan Belt Tensioner - Check/Correct

Fan Hub, Belt-Driven - Check/Correct

Overhead Set - Adjust
Every 2000 Hours or 2 Years - Maintenance Check
(3, 4)

Air Compressor Discharge Line - Check/Correct

Cooling System - Drain, Flush, and Fill

Vibration Damper, Rubber - Check
Vibration Damper, Viscous - Check
1. NOTE: The lubricating oil and lubricating oil filter
interval can be adjusted based on application, fuel
consumption, gross vehicle weight, and idle time.
For engines whose aspiration is jacket water-
cooled, turbocharged only, or natural, refer to
Table in the Oil Drain Intervals section.
2. The lubricating oil and lubricating oil filter interval
can be adjusted based on application, fuel con-
sumption, gross vehicle weight, and idle time. For