Specifications

7.1 Disconnect the radiator upper and lower
hoses.
7.2 Attach the flushing gun nozzle to the ra-
diator at the lower radiator hose opening.
Run the water until the radiator is full.
NOTICE
When flushing the radiator, do not apply more
than 15 psi (100 kPa) air pressure. Excessive pres-
sure can damage the radiator.
7.3 Gradually, apply air pressure to help dis-
lodge sediment built up in the radiator
core. Do not apply more than 15 psi (103
kPa) air pressure to the radiator. Pres-
sures exceeding 15 psi (103 kPa) could
damage the radiator core.
7.4 Shut off the air at the pressure gun
nozzle and allow the radiator to refill with
water.
7.5 Repeat the previous two steps until clean
water flows from the radiator.
7.6 Remove the radiator side tank drain plug
and allow the radiator to drain.
f50024406/08/95
1
2
3
1. Low-Coolant-Level Sensor
2. SAE Cap (for coolant overflow pressure relief only)
3. Fill Cap
Fig. 1, Surge Tank, Century Class Conventional
07/21/98
1
2
3
f200465
1. Radiator/Charge Air Cooler Assembly
2. Fill Cap
3. Surge Tank
Fig. 2, Surge Tank, Argosy COE
Engine Cooling/Radiator20
Century Class Trucks Maintenance Manual, September 201020/2