HUB-BRAKE 3318506 - Caterpillar

Use this procedure to troubleshoot any suspect problems with the electrical circuit for the ether injection system.The ether injection system improves cold weather starting of the engine. The Electronic Control Module (ECM) provides total control of the ether injection system.An override feature on the Caterpillar Electronic Technician (ET) allows the technician to activate the ether system. The test is only functional while the engine is not running. Activate this feature by selecting the "Override Parameters" from the diagnostic menu in Cat ET.
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Schematic of the ether injection system
Breathing ether vapors or repeated contact of ether with skin can cause personal injury. Personal injury may occur from failure to adhere to the following procedures.Use ether only in well ventilated areas.Do not smoke while changing ether cylinders.Use ether with care to avoid fires.Do not store replacement ether cylinders in living areas or in the operator's compartment.Do not store ether cylinders in direct sunlight or at temperatures above 49 °C (120 °F).Discard cylinders in a safe place. Do not puncture or burn cylinders.Keep ether cylinders out of the reach of unauthorized personnel.To avoid possible injury, be sure the brakes are applied and all controls are in Hold or Neutral when starting the engine.
Test Step 1. Inspect the Electrical Connectors and the Wiring
Remove the electrical power from the ECM.
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Location of the J1/P1 connectors (typical engine view)
(1) J1/P1 connectors
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Components for the ether injection system (typical view)
(2) Ether injection solenoid
Thoroughly inspect connectors (1) and (2). Also, thoroughly inspect the connectors for solenoid (3). Refer to the diagnostic functional test Troubleshooting, "Electrical Connectors - Inspect".
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Terminal locations at the P1 connector for the ether injection system
(P1-18) Solenoid return
(P1-10) Ether injection solenoid
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Terminal locations at the connector for the ether injection solenoid
(Terminal 1) Ether injection solenoid
(Terminal 2) Solenoid return
Perform a 45 N (10 lb) pull test on each of the wires that are associated with the ether injection system.
Check the torque of the allen head screws for each of the ECM connectors. Refer to the diagnostic functional test Troubleshooting, "Electrical Connectors - Inspect".
Check the harness and the wiring for abrasion and for pinch points from the ether injection solenoid to the ECM connector. Expected Result:All connectors, pins, and sockets are completely coupled and/or inserted, and the harness and wiring are free of corrosion, of abrasion and of pinch points.Results:
OK - The connectors and the wiring appear to be OK. Proceed to Test Step 2.
Not OK - The connectors and/or the wiring are not OK.Repair: Repair the connectors and/or the wiring. Replace parts, if necessary. Verify that the problem is resolved.STOPTest Step 2. Check the Ether Canisters for Fluid
Ensure that the electrical power is removed from the ECM.
Remove the ether canister from the ether valve.
Determine if the canister is empty. Expected Result:The ether canister is not empty.Results:
OK - The ether canister is not empty. Remove the ether canister from the ether valve for the remainder of this test. Proceed to Test Step 3.
Not OK - The ether canister is empty.Repair: Replace the empty ether canister