Cooling System Maintenance; Cooling System Safety; Checking The Engine-Cooling System - Toro Groundsmaster 5900 Operator's Manual

Cooling System
Maintenance

Cooling System Safety

CAUTION
Discharge of hot, pressurized coolant or
touching a hot radiator and surrounding parts
can cause severe burns.
• Do not remove the radiator cap when the
engine is hot. Always allow the engine to
cool at least 15 minutes or until the radiator
cap is cool enough to touch without
burning your hand before removing the
radiator cap.
• Do not touch the radiator and surrounding
parts that are hot.
DANGER
Swallowing engine coolant can cause
poisoning.
• Do not swallow engine coolant.
• Keep out of reach from children and pets.
Checking the
Engine-Cooling System
Service Interval: Before each use or daily—Check
the engine-coolant level in the
overflow reservoir.
Every 100 hours—Inspect the cooling-system
hoses.
The capacity of the system on a machine without a
cab is 10.4 L (13.5 US qt) and with a cab is 17 L (18
US qt).
Recommended Coolant
Note:
Coolant must meet or exceed ASTM Standard 3306
Glycol based pre-diluted coolant (50/50 blend)
Glycol-based coolant mixed with distilled water (50/50 blend)
Glycol-based coolant mixed with good quality water (50/50
blend) as listed in the Cummins Manual
CaCO + MgCO
3
Chloride <40 ppm (CI)
Sulfur <100 ppm (SO
or
or
<170 ppm
3
)
4
DANGER
The rotating fans and drive belts can cause
personal injury.
• Do not operate the machine without the
covers in place.
• Keep fingers, hands, and clothing clear of
the rotating fan and drive belt.
• Shut off the engine, remove the ignition
key, and turn the battery-disconnect switch
to the O position before performing
FF
maintenance.
CAUTION
If the engine has been running, the
pressurized, hot coolant can escape and
cause burns.
• Do not open the radiator cap when the
engine is running.
• Use a rag when opening the radiator cap,
and open the cap slowly to allow steam to
escape.
1. Carefully remove the radiator cap and
expansion-tank cap
1. Expansion-tank cap
2. Check the coolant level in the radiator
119).
Note:
When cool, the radiator should be filled
to the top of the filler neck and the expansion
tank filled to the Full mark.
3. If the coolant is low, add the recommended
replacement coolant to the expansion tank to
the Full mark.
Note:
Do not use water only or
alcohol/methanol-based coolants.
4. Install the radiator cap and expansion-tank cap.
81
(Figure 119).
Figure 119
2. Radiator cap
g031320
(Figure