OPERATOR'S MANUAL

Preventive Maintenance Cooling System
Model 330 PB1318 3/01 – 145 –
COOLING SYSTEM
Introduction
Peterbilt Trucks are standard with Air-to-Air cooling systems.
These cooling systems incorporate a radiator to cool the
engine jacket water and a Charge-Air-Cooler to cool turbo-
charged engine intake air.
Radiator and Hose Clamps
Use torque values in Table 6 to check radiator and hose
clamps.
Topping Up
Check the coolant level after each trip when the engine has
cooled. The coolant level should be even with the “FULL
COLD” line, marked on the expansion (surge) tank. Add cool-
ant as necessary (see “Refilling” on page 151
).
Use caution not to overfill the system with coolant. An over-
filled cooling system will cause loss of coolant through the
radiator cap as the coolant expands during heating. Replace-
ment or make-up coolant should have the same antifreeze
Cooling System Expansion Tank
FILL
COOLANT
EXPANSION
TANK
Table 6 Radiator Hose Clamp Torque Values
HOSE
TYPE
HOSE ID
Clamp
Type
Torque
Rubber and
Silicone
0.375 in.
Mini-Clamp 10-15 Lb. in. (1.13-1.7 N.m.)
Aero-Seal
35-45 Lb. in.(3.95-5.08 N.m.)
1.00 - 1.25 in.
Aero-Seal
60-75 Lb. in.(6.78-8.47 N.m.)
2.00 - 3.00 in.
T-bolt Con-
stant Torque
50–60 Lb. in.(5.65-6.78 N.m.)