793C Off-Highway Truck Machine Systems Caterpillar

Removal Procedure

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Illustration 1	g00459092

1. Loosen set screw (1) in knob (2). Remove knob (2) .

2. Remove twelve screws (3) .

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Illustration 2	g00459134

3. Slightly open front cover (6). Open the front cover enough to loosen hose clamps (5). Open the front cover enough to disconnect hose (4) .

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Illustration 3	g00457928

4. Put the front cover aside. Be careful not to damage the thermostat capillary tube.

   Note: When the cover is opened, do not allow the thermostat capillary tube to be crimped. If this tube is crimped, the thermostat must be replaced.

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Illustration 4	g00459135

5. Identify five electrical connections (8) on the rotary switch. Disconnect the harness.

6. Remove the nut on the front side of the cover. Remove rotary switch (7) .

Installation Procedure

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1. Install rotary switch (7). Install the nut on the front side of the cover.

2. Identify five electrical connections (8) on the rotary switch. Connect the harness.

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Illustration 6	g00457928

3. Position the front cover for installation. Be careful not to damage the thermostat capillary tube.

   Note: When the cover is open, do not allow the thermostat capillary tube to be crimped. If this tube is crimped, the thermostat must be replaced.

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Illustration 7	g00459134

4. Connect hose (4). Tighten hose clamps (5). Close front cover (6) .

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Illustration 8	g00459092

5. Install twelve screws (3) .

6. Install knob (2). Tighten set screw (1) in knob (2) .