Manitowoc 16000 - Engine Cooling System Fill - Current Production Tier 4; Cooling System Operation; General

Reference Only
Manitowoc Published 05-09-17, Control # 014-28 7-13
16000 SERVICE/MAINTENANCE MANUAL POWER TRAIN
7
ENGINE COOLING SYSTEM FILL —
CURRENT PRODUCTION TIER 4
General
The cooling system consists of a horizontal radiator
(mounted above the engine) and a variable-speed,
hydraulically driven blower-type fan.
Cooling System Operation
Cooling system flow is illustrated in Figure 7-10.
The cooling system is of the deaeration type, which
continually removes air from the system, as follows:
• A small percentage of total coolant flow is circulated
through a vent line to the radiator.
• Since coolant circulation is very slow in the radiator, air
separates from the coolant.
• Air collects at the top of the radiator. When pressure
rises to 15 psi (1,03 bar), the relief in the fill cap opens to
exhaust air through overflow line.
• Deaerated coolant returns to the system through a
make-up line.
FIGURE 7-10
Closed Thermostat
A678a
Open Thermostat
MAIN FLOW
MAKE-UP FLOW
DEAERATION FLOW
Item Description Item Description
1 Engine 6 Vent Line
2 Water Pump Housing 7 Fill Cap
3 Thermostat Housing 8 Cooler Assembly
4 Bypass Line 9 Fan
5 Make up Line 10 Motor
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