CUMMINS N14 Specifications download pdf (Page 564)

100

101

Bypass Thermostat Seat Counterbore 2.92 MIN 0.115

Depth (Big Cam IV and New Big Cam IV) 3.17 MAX 0.125

Bypass Thermostat Seat O.D. 44.462 MIN 1.7505

(Big Cam IV and New Big Cam IV) 44.513 MAX 1.7525

Bypass Thermostat Seat Thickness

(Big Cam IV and New Big Cam IV)

• 49 State Engine (EPA Certified) 6.35 MIN 0.250

6.48 MAX 0.255

• 50 State Engine (EPA and CARB Certified) 7.87 MIN 0.310

7.92 MAX 0.312

Bypass Thermostat Seat Protrusion

(Big Cam IV and New Big Cam IV)

• 49 State Engine (EPA Certified) 3.18 MIN 0.125

3.56 MAX 0.140

• 50 State Engine (EPA and CARB Certified) 4.70 MIN 0.185

5.00 MAX 0.197

Part or Assembly Ref. Point Degree °C Degree °F

Thermostat (Reserve Flow Cooling) - Operating Tempera-

ture

Optimized Aftercooling Thermostat:

• Initial Opening Temperature 87°C MIN 188°F

89°C MAX 192°F

• Fully Open Temperature 93°C MAX 200°F

• Maximum Open Distance 5.08 mm MAX 0.200 in.

Part or Assembly Ref. Point mm in

Thermostat Rectangular Seal Bore I.D.

• Radiator Thermostat 66.55 MIN 2.620

66.80 MAX 2.630

• Bypass Thermostat 66.55 MIN 2.620

66.80 MAX 2.630

Thermostat (Reserve Flow Cooling) - Operating Temperature Specifications

Page 18-60 NT 855

Part or Assembly Ref. Point mm in

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CUMMINS N14 Specifications Page 564

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