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Centinel System – Repair Manual – 008-014   Coolant Thermostat Housing

Install

 TOC

Single Thermostat


To reduce the possibility of a coolant leak, the 90-degree elbow on the thermostat housing must be positioned appropriately and tightened before the thermostat housing is installed on the cylinder head.

Use two thermostat housing capscrews to align the thermostat housing.

Install the thermostat housing, gasket, and three capscrews to the cylinder block.

Tighten the three thermostat housing mounting capscrews.

Torque Value:  45  n.m  [33 ft-lb]

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Install the thermostat into the thermostat housing cover by pushing on the outer rim.

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Install the thermostat housing cover, gasket, and four capscrews.

Tighten the capscrews.

Torque Value:  45  n.m  [33 ft-lb]

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Dual Thermostat


Use two thermostat housing cover capscrews to align the thermostat housing.

Install the thermostat housing, gasket, and two capscrews on the cylinder head.

Tighten the two thermostat housing capscrews.

Torque Value:  56  n.m  [41 ft-lb]

Remove the two thermostat housing cover capscrews used as guides.

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Install the two thermostats into the thermostat housing cover by pushing on the outer rims.

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Install the thermostat housing cover, gasket, and four capscrews on the cylinder head.

Tighten the capscrews.

Short capscrews 34 n.m [25 ft-lb]
Long capscrews 56 n.m [41 ft-lb]

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Connect the vent line. Refer to the OEM instructions.

Connect the coolant sensor connector.

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Install the upper radiator hose.

Tighten the hose clamp.

Torque Value:  5  n.m  [40 in-lb]

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Industrial engines use a thermostat housing cover with either a cover plate or a water connection.

Install the thermostat cover if removed.

Tighten the capscrews.

Torque Value:  28  n.m  [20 ft-lb]

Automotive has a similar design with connector for transmission cooler.

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Last Modified:  10-Jul-2006
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