POWER TRAIN 2250 SERVICE/MAINTENANCE MANUAL
7-18
Published 11-06-15, Control # 040-13
5. Open drain valve (Figure 7-22) and drain coolant into a
suitable container.
6. Close drain valve once system is completely drained.
Filling Radiator
See engine manufacturer’s manual for antifreeze and
coolant additive recommendations. Refer to the operator
manual for detailed radiator fill instructions. Add coolant to
FULL (COLD) LEVEL as determined on checks per the
schedule in the engine owner’s manual.
1. Fully open all three air bleed valves.
2. Fill cooling system through radiator fill cap to FULL
(COLD) LEVEL mark on sight gauge. Coolant system
capacity is approximately 21 gallons (79.5 liters).
3. Observe and close bleed valves once clear coolant
appears at the bleed valves.
4. Continue adding coolant until the level is at the FULL
(COLD) mark.
NOTE: Maximum fill rate is 5 GPM (18.9 liters/min).
5. Install fill cap and run engine until at normal operating
temperature.
6. Look for coolant leaks while the engine is running and
correct if found.
7. Stop engine, wait until engine is cool, and refill radiator
to FULL (COLD) level mark.
Supplemental Coolant Additive must be added to the cooling
system to prevent liner pitting and for scaling protection.
Check SCA concentration according to the schedule in the
engine manufacturer’s operator manual and per warnings,
cautions and instructions in the engine manufacturer’s
service manual.
ENGINE THROTTLE ADJUSTMENT
Cummins N14 – C450 Engine
General
The throttle assembly consists of an electronic control
module (ECM) on the engine, a hand throttle controller in the
left console, a foot pedal on the cab floor, a foot throttle
controller in the right console, associated linkage, and
electrical connections.
FIGURE 7-21
Bleed Valve
(Under covers)
Front of Radiator
Access Covers
FIGURE 7-22
P1902
Drain
Valve
View Under Rear of Engine
CAUTION!
Engine Damage!
The required coolant level must be maintained to prevent
engine damage.
Do not remove the radiator fill cap from a hot engine.
Allow the engine to cool below 50°C (120°F) before
adding coolant.
Do not add cold coolant to a hot engine. Engine castings
can be damaged. Allow the engine to cool below 50°C
(120°F) before adding coolant.
Coolant is toxic. Do not ingest. If not reused, dispose of in
accordance with all local and other applicable
environmental regulations.
CAUTION!
Engine Damage!
The required Supplemental Coolant Additive (SCA)
concentration must be maintained to prevent engine
damage.