Service Cooling System - Navistar MaxxForce DT 9 Operation And Maintenance Manual

SECTION 5 – MAINTENANCE SCHEDULE AND SERVICE PROCEDURES
Service Procedures (cont.)

SERVICE COOLING SYSTEM

Service Interval for Extended Life Coolant: 500,000 km (300,000
miles) or 12,000 hours
WARNING: To prevent personal injury or death, shift
transmission to park or neutral, set parking brake, and block
wheels before doing diagnostic or service procedures.
WARNING: To prevent personal injury or death, do not
let engine fluids stay on your skin. Clean skin and nails
using hand cleaner and wash with soap and water. Wash or
discard clothing and rags contaminated with engine fluids.
WARNING: To prevent personal injury or death, do the
following when removing the radiator cap or coolant tank
cap:
• Allow the engine to cool for 15 minutes or more.
• Wrap a thick cloth around the radiator cap or coolant tank
cap.
• Loosen cap slowly a quarter to half turn to vent pressure.
• Pause for a moment to avoid being scalded by steam.
• Continue to turn cap counterclockwise to remove.
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1. Park vehicle on level ground. Set parking brake and shift
transmission to park or neutral.
2. Place a drain pan under the radiator.
3. Remove coolant tank cap.
4. Place coolant drain pan under radiator drain valve and open
radiator drain valve to drain coolant.
5. After radiator has drained, close the drain valve and move
the drain pan beneath the oil system module.
Figure 41 EGR coolant drain plug
Form No. 1172040R1
Printed in the United States of America