MAINTENANCE
6400 MM429 (6--99)
52
ENGINE
COOLING SYSTEM
Check the radiator coolant level after every
100 hours of operation. Use clean water mixed
with a permanent-type, ethylene glycol antifreeze
to a --34
_
C (--30
_
F) rating.
FOR SAFETY: When servicing machine,
avoid contact with hot engine coolant.
Check the radiator hoses and clamps after every
200 hours of operation. Tighten the clamps if they
are loose. Replace the hoses and clamps if the
hoses are cracked, hardened, or swollen.
Check the radiator core exterior and for debris
after every 100 hours of operation. Blow or rinse
all dust, which may have collected on the radiator,
in through the grille and radiator fins, opposite the
direction of normal air flow. Be careful not to bend
the cooling fins when cleaning. Clean thoroughly
to prevent the fins becoming encrusted with dust.
Clean the radiator and cooler only after the
radiator has cooled to avoid cracking.
FOR SAFETY: When servicing machine,
wear eye and ear protection if using
pressurized air or water.
Flush the radiator and the cooling system after
every 800 hours of operation, using a dependable
cleaning compound.
AIR FILTER INDICATOR (OPTION)
The optional air filter indicator shows when to
replace the air filter element. Check the indicator
daily. The indicator’s red line will move as the air
filter element fills with dirt. Do not replace the air
filter element until the red line reaches 5 kPa (20
in H
2
O) and the “SERVICE WHEN RED” window
is filled with red. The indicator’s red line may
return to a lower reading on the scale when the
engine shuts off. The red line will return to a
correct reading after the engine runs for a while.
Reset the air filter indicator by pushing the reset
button on the end of the indicator after replacing
the air filter element.
Summary of Contents for 6400
Page 47: ...OPERATION 45 6400 MM429 9 04 ...
Page 82: ...INDEX 6400 MM429 9 04 80 ...
