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Electronic Control System ISM and QSM11 Engines – 019-169   Electronic Air Compressor Governor

Table of Contents

Remove
Install
Resistance Check

Remove

 TOC

 WARNING 

Drain the air compressor tank and all lines before removing or installing the air compressor governor. Failure to drain the air compressor tank and lines of pressure could result in personal injury, mechanical damage, or electrical damage, or all of the above.

Lift up on the tab and disconnect the connector from the governor.

Remove the governor from the air compressor.

Inspect the governor for damage.

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Install

 TOC

 WARNING 

Drain the air compressor tank and all lines before removing or installing the air compressor governor. Failure to drain the air compressor tank and lines of pressure could result in personal injury, mechanical damage, or electrical damage, or all of the above.

Make sure the new governor has an o-ring around the surface where it seals against the air compressor.

Install the governor onto the air compressor.

Torque Value:  14  n.m  [124 in-lb]

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Resistance Check

 TOC

 CAUTION 

Do not use test leads other than Part Number 3822758. The connector will be damaged. The leads must fit tightly into the connector without expanding the connector pins.

Disconnect the actuator harness connector from the ECM. Disconnect the 6-pin electronic governor connector from the engine harness. Insert a test lead into pin 14 of the actuator harness connector, and connect it to the multimeter probe. Insert the other test lead into pin 5 of the 6-pin electronic governor connector, engine harness side. Connect the lead to the other multimeter probe. Set the multimeter to the resistance setting and measure the resistance.

The multimeter must show a closed circuit
(10 ohms or less).

If the circuit is not closed, repair or replace the engine harness. Refer to Procedure 019-043.

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Insert the test lead into pin 11 of the actuator harness connector. Insert the other test lead into pin 6 of the 6-pin electronic governor connector, engine harness side. Measure the resistance.

The multimeter must show a closed circuit
(10 ohms or less).

If the circuit is not closed, repair or replace the engine harness. Refer to Procedure 019-043.

Connect all components after completing the repair.

SMALL | MEDIUM | LARGE
Last Modified:  28-Jan-2005
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Published by Jack

Hello, I'm Jack, a diesel engine fan and a blogger. I write about how to fix and improve diesel engines, from cars to trucks to generators. I also review the newest models and innovations in the diesel market. If you are interested in learning more about diesel engines, check out my blog and leave your feedback.