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Centinel System – Repair Manual – 008-016   Coolant Thermostat Seal

Remove

 TOC

Single Seal


Remove the thermostat seal. Do not damage the thermostat cover.

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Dual Seal


NOTE: The Signature, ISX, and QSX engines have two engine coolant thermostats.

Remove the thermostat housing cover. Refer to Procedure 008-014.

Remove the thermostat seal. Do not damage the thermostat cover.

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Inspect for Reuse

 TOC

NOTE: The Signature, ISX, and QSX engines have two engine coolant thermostats.

Inspect the thermostat seal for cracks, corrosion, or other damage. Replace if necessary.

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Install

 TOC

Single Seal


NOTE: When installing a new seal, the flat side of the seal must be toward the mandrel for correct installation.

Use thermostat seal mandrel, Part Number 3824716, and a lead hammer to install the seal.

A counterbore in the housing bore locates the seal.

SMALL | MEDIUM | LARGE
   

Dual Seal


NOTE: The Signature, ISX, and QSX engines have two engine coolant thermostats.

NOTE: When installing a new seal, the flat side of the seal must be toward the mandrel for correct installation.

Use thermostat seal mandrel, Part Number 3164350, and a lead hammer to install the seal.

A counterbore in the housing bore locates the seal.

Install the thermostat housing cover. Refer to Procedure 008-014.

SMALL | MEDIUM | LARGE
Last Modified:  26-Jun-2002
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