Coolant Level Check; Radiator Filling Procedure - Komatsu 730E Operation & Maintenance Manual

Maintenance - Section 4
Page 4-2

COOLANT LEVEL CHECK

Inspect the coolant sight gauge. If coolant cannot be
seen in the sight gauge, it is necessary to add coolant
to the cooling system before truck operation. Refer to
the procedure below for the proper filling procedure.

RADIATOR FILLING PROCEDURE

Cooling System is pressurized due to thermal expan-
sion of coolant. DO NOT remove radiator cap while
engine and coolant are hot. Severe burns may result.
1. With engine and coolant at ambient temperature,
remove radiator cap.
Note: If coolant is added using the Wiggins quick
fill system, the radiator cap MUST be removed prior
to adding coolant.
2. Fill radiator with proper coolant mixture (as specified
by the engine manufacturer) until coolant is visible
in the sight gauge.
3. Install radiator cap.
4. Run engine for 5 minutes, check coolant level.
5. If coolant is not visible in the sight gauge, repeat
steps 1 through 4. Any excess coolant will be dis-
charged through the vent hose after the engine
reaches normal operating temperature.
Engine coolant must always be visible in the sight
gauge before truck operation.
COOLING SYSTEM ANTI - FREEZE
RECOMMENDATIONS
(Ethlyene Glycol Permanent Type Anti-Freeze)
Percentage of
Anti-Freeze
10 +23°F
20 +16°F
25 +11°F
30 +4°F
35 - 3°F
40 - 12°F
45 - 23°F
50 - 34°F
55 - 48°F
60 - 62°F
Use only anti-freeze that is compatible with engine
as specified by engine manufacturer.
OM4035.1 01/04
Lubrication and Service
Protection To
- 5°C
- 9°C
- 11°C
- 16°C
- 19°C
- 24°C
- 30°C
- 36°C
- 44°C
- 52°C