MBE 4000

Cooling System Overview

Additional Information

Specifications

This section contains the specifications for servicing the engine.‪

Cooling System Overview

The coolant specifications are listed in Table "Coolant Specifications" . Listed in Table "Cooling System Capacity" are the cooling system capacity figures. The coolant mixing ratio is listed in Table "Coolant Mixing Ratio" .‪

Type of Coolant‪

Requirement‪

Fully -Formulated Ethylene Glycol*‪

TMC RP-329 Type "A"‪

Water plus Corrosion Inhibitors‪

Temperature must not fall below 32°F (0°C)‪

Table 1. Coolant Specifications

*Preferred coolant

Description

Capacity in liters (Quarts)

Engine Coolant Capacity (all vehicles‪

Engine capacity*‪

30.0 (31.7)‪

Century Class and Columbia Cooling System Capacity‪

Total capacity†‪

57.4 (60.7)‪

Antifreeze quantity at 50 percent‪

28.7 (30.4)‪

Antifreeze quantity at 55 percent‪

31.6 (33.4)‪

Sterling A-Line and L-Line Cooling System Capacity‪

Total capacity‪

53.8 (56.8)‪

Antifreeze quantity at 50 percent‪

26.9 (28.4)‪

Antifreeze quantity at 55 percent‪

29.6 (31.3)‪

FL112 Cooling System Capacity‪

Total capacity‪

42.0 (44.4)‪

Antifreeze quantity at 50 percent‪

21.0 (22.2)‪

Antifreeze quantity at 55 percent‪

23.1 (24.4)‪

Table 2. Cooling System Capacity

* Does not include capacity of cooling system.
†With 1200 sq. ft. radiator.

Antifreeze Protection Down to °F (°C)

Water Percentage by Volume

Corrosion-Inhibiting Antifreeze Percentage by Volume

-34 (-37)‪

50‪

50‪

-49 (-45)‪

40‪

Maximum 60‪

Table 3. Coolant Mixing Ratio

Coolant Pump

The torque values for the cooling system are listed in Table "Cooling System Torque Values" . The wear dimensions for the coolant pump assembly are listed in Table "Coolant Pump Assembly Wear Dimensions" . Listed in Table "Critical Dimension for Coolant Pump Assembly" is the critical dimension for the coolant pump assembly.‪

Fastener‪

Torque Value, mm (in.)‪

Coolant Pump Inlet Pipe Mounting Bolts‪

50 (37)‪

Coolant Pump Mounting Bolts‪

30 (22)‪

Coolant Pump Pulley Mounting Bolts‪

25 (18)‪

Front Idler and Tensioner Support Mounting Bolts‪

60 (44)‪

Thermostat Housing Mounting Bolts‪

25 (18)‪

Table 4. Cooling System Torque Values

Description‪

Dimensions, mm (in.)‪

Drive Shaft Diameter (at the hub)‪

25.048 - 25.061 (0.9861 - 0.9867)‪

Hub Inside Diameter‪

24.995 - 25.008 (0.9841 - 0.9846)‪

Bearing Outside Diameter‪

54.981 - 54.994 (2.1646 - 2.1651)‪

Bearing Housing Diameter‪

54.930 - 54.960 (2.1626 - 2.1638)‪

Drive Shaft Diameter (at the impeller)‪

15.045 - 15.056 (0.5923 - 0.5928)‪

Impeller Inside Diameter‪

15.000 - 15.018 (0.5906 - 0.5913)‪

Impeller Outside Diameter‪

124 - 125 (4.88 - 4.92)‪

Impeller - Maximum Out-of-Round‪

0.15 (0.0059)‪

Table 5. Coolant Pump Assembly Wear Dimensions

Dimension‪

Description‪

mm (in.)‪

A‪

Gap between the Impeller and the Coolant Pump Housing‪

0.6 - 1.0 (0.023 - 0.039)‪

Table 6. Critical Dimension for Coolant Pump Assembly

Thermostat

The thermostat test values are listed in Table "Thermostat Test Values" .‪

Description

Temperature °C (°F)

Distance mm (in.)

Main Valve Starts To Open‪

81 to 85 (177 to 185)‪

—‪

Main Valve Fully Open‪

95 (203)‪

—‪

Main Valve Minimum Lift‪

—‪

8 (0.3 )‪

Short Circuit Valve Fully Closed‪

92 (198)‪

—‪

Short Circuit Valve Minimum Lift‪

—‪

6 to 7.5 (0.24 to 0.295)‪

Table 7. Thermostat Test Values

Coolant Sensor

The sensor torque value is listed in Table "Torque Value" .‪

Description‪

Torque, N·m (lb·ft)‪

Coolant Temperature Sensor to the Engine Block‪

30 (22)‪

Table 8. Torque Value


MBE 4000 Service Manual - 6SE412
Generated on 10-13-2008

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