Flush Engine Coolant System; Adding Coolant To On-Board Tank - MAHLE VCX-32HD Operation Manual

6.5 Flush engine coolant system

When the coolant system becomes contaminated, it
is necessary to flush the system.
1. Make the VCX-32HD top and bottom connections to
the engine coolant system.
2. Keep the FLOW CONTROL VALVE and the DRAIN
CONTROL VALVE closed and OPEN the BYPASS
VALVE (located behind SAMPLE VALVE).
3. Place an approved container under the BYPASS
HOSE.
4. Flip the DRAIN SWITCH to ON.
5. The VCX-32HD will push compressed air through the
top connection and push out the contaminated
coolant through the BYPASS HOSE.
6. Remove top hose connection and add the coolant
system flush chemical to the engine coolant system.
7. Follow the standard flushing process.
8. After flushing, use the same instructions to drain the
coolant system.
9. Repeat as necessary.

6.6 Adding coolant to on-board tank

1. Use SIGHT GAUGE INDICATOR to monitor tank
fluid level.
2. Flip the DRAIN SWITCH to ON.
3. Open the FILL PAN CONTROL VALVE.
4. Open the DRAIN CONTROL VALVE.
5. Pour coolant into the receptacle. The coolant will be
filtered before entering the VCX-32HD on-board tank.
6. When the coolant reaches the level needed on the
sight gauge, flip the DRAIN SWITCH to OFF.
7. Close both the FILL PAN and DRAIN CONTROL
VALVES.
8. Add fresh coolant to engine using the VCX-32HD
two-stage fill procedure. Any excess coolant in the
unit should be emptied into a separate fresh-coolant
container.
Operation | VCX-32HD | 11 | en