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ISM, ISMe, and QSM11 – 018-018   Cooling System

Specifications

 TOC

Automotive Applications

Coolant Capacity (engine only)

With CM570 9.5 liters [10 qt]
With CM875 11.7 liters [12.4 qt]
With CM876 11.7 liters [12.4 qt]
Standard Modulating Thermostat – Range 82 to 93°C [180 to 200°F]

Cylinder Block Coolant Pressure (pressure cap removed)

Minimum – Closed Thermostat, 1800 rpm – No Load 138 kPa [20 psi]
Maximum – Closed Thermostat 275 kPa [40 psi]
Maximum Allowable Operating Coolant Temperature 100°C [212°F]
Minimum Recommended Operating Coolant Temperature 70°C [160°F]

Minimum Recommended Pressure Cap

With CM570 48 kPa [7 psi]
With CM875 69 kPa [10 psi]
With CM876 69 kPa [10 psi]
Maximum Allowable Coolant Flow to Accessories (liters/minute [gpm]) 75.5 Liters/min [20 gpm]

Coolant Sensing Fan Control

With CM570 – On 96°C [205°F]
With CM570 – Off 91°C [195°F]
With CM875 – On 95°C [203°F]
With CM875 – Off 92°C [198°F]
With CM876 – On 95°C [203°F]
With CM876 – Off 92°C [198°F]

SMALL | MEDIUM | LARGE

The temperatures listed in this chart for coolant temperature sensing fan control and intake manifold temperature sensing fan control are correct for vehicles that allow the ECM to control the on/off operation of the cooling fan. Consult the OEM for other types of control.

Marine Applications

Coolant Capacity:

Engine with Heat Exchanger 29.4 liters [8 gal]
Minimum Drawdown 15.2 liters [4 gal]
Standard Thermostat Modulating Range 71 to 79.4°C [106 to 175°F]

Block coolant Pressure with Closed Thermostat (pressure cap removed)

Maximum 246 kPa [36 psi]

Coolant Inlet Pressure with Open Thermostat and No Cap:

Minimum 64 mm Hg [2.5 in Hg]
Maximum Coolant Temperture 96°C [205°F]
Minimum Fill Rate 18.9 liters/min [5 gpm]
Minimum Initial Fill Time 2 minutes
Maximum Deaeration Time 10 minutes

Minimum Coolant Expansion Space:

Percent of Cooling system 5%

External Pressure Loss in Cooling System:

Maximum 35 kPa [5 psi]

Static Pressure of Coolant:

Maximum – Exclusive of Pressure Cap 103 kPa [15 psi]
Maximum Sea Water Pressure 103 kPa [15 psi]
Maximum Sea Water Pump Inlet Restriction 127 mm Hg [5 psi]
Maximum Sea Water Pump Initial Suction Lift 3 m [10 ft]
Pressure Cap Rating (with heat exchanger) 103 kPa [15 psi]
Maximum Allowable Coolant Flow to Accessories 37.9 liters/min [10 gal/min]

Industrial Applications

Coolant Capacity 9.5 liters [2.5 gal]
Standard Modulating Thermostat Range 82 to 93°C [180 to 200°F]

Cylinder block Coolant Pressure (pressure cap removed):

Minimum:

Closed Thermostat (1800 rpm no load) 138 kPa [20 psi]

Cylinder block Coolant Pressure (pressure cap removed):

Maximum:

Closed Thermostat 275 kPa [40 psi]
Maximum Allowable Operating Coolant Temperature 100°C [212°F]
Minimum Recommended Operating Coolant Temperature 70°C [160°F]
Maximum Allowable Deaeration Time 35 minutes
Minimum Recommended Pressure Cap 48 kPa [7 psi]

Generator Set Applications

Coolant Capacity: 9.5 liters [2.5 gal]
Standard Modulating Thermostat Range 82 to 93°C [180 to 200°F]
Minimum Pressure Cap 48 kPa [7 psi]

Maximum Coolant Friction Head External to Engine

1500 rpm 55 kPa [8 psi]
1800 rpm 69 kPa [10 psi]
Maximum Static Head of Coolant Above Engine Crank Centerline 14 m [46 ft]
Maximum Top Tank Temperature for Standby/Prime Power 104/100°C [220/212°F]

Last Modified:  18-Feb-2009
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Published by Jack

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