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I would like to take a look at the cummins book for your apllication, can you give me your engine serial number?
Also, was the Jake factory installed?
Thank you, XXXXX XXXXX get back with you shortly.
Attached is the full file for troubleshooting symptoms on your engine. 6
CLICK HERE FOR PDF 1
CLICK HERE FOR 2
CLICH HERE FOR 3
I will follow up with a reply to include some additional testing, please let me know if there is something you uncover and need additional information.
The engine brake ON/OFF switch circuit signals the system that the operator is requesting the engine brake system to be activated. The engine brake selector switch determines how many cylinders will be used for engine braking. Three inputs to the ECM from the selector switch are used to communicate the setting to the ECM. Pins 22, 31, and 32 in the OEM connector are used. Various combinations of the three wires are used to represent the six switch positions.
After the ECM receives the signal from the engine brake ON/OFF switch, the ECM will supply 12 VDC to pins 15, 25, and 44 in the actuator harness, provided the engine speed is above idle and the driver is not in cruise control, or depressing the throttle or clutch pedals. Pins 15, 25, and 44 are connected to the engine brake solenoids in the cylinder head.
If INSITETM is available, monitor the engine brake ON/OFF and selector switches for proper operation. If not, follow the troubleshooting procedures in this section.
Locate the engine brake ON/OFF switch. Remove the electrical connectors from the switch.
Label the wires with the location on the switch or the wire number. Remove the electrical connectors from the switch.
Adjust the multimeter to measure resistance.
Touch one multimeter probe to one the terminals of the switch. Touch the other multimeter probe to the other terminal of the switch.
Move the switch to the OFF position. The multimeter must show an open circuit (100k ohms or more). If the circuit is not open, the switch has failed.
Refer to the OEM troubleshooting and repair manual for replacement procedures.
Place the switch in the ON position. The multimeter must show a closed circuit (10 ohms or less). If the circuit is not closed, the switch has failed.
Touch one of the multimeter probes to one of the switch terminals. Touch the other probe to chassis ground. Move the switch to the ON position and measure the resistance. The multimeter must show an open circuit (100k ohms or more). If the circuit is not open, the switch has failed. Refer to the OEM troubleshooting and repair manual for replacement procedures. If the switch passes all of the previous checks, the circuit must be checked for an open circuit, a short circuit to ground, a short circuit from pin to pin, and a short circuit to an external voltage source.
Below is the last file I could find.
Please let me know if you need anything else,
Attachments are only available to registered users.
Disconnect the engine wiring harness connector from the cylinder head pass-through connector.
Connect one end of the engine brake breakout cable, Part Number 3163150, to the cylinder pass-through connector.
Check the resistance of each solenoid.
Connect one end of the engine brake breakout cable, Part Number 3163150, to the cylinder pass-through connector and the other end to the engine wiring harness connector.
Connect the red alligator clip of the engine brake breakout cable to battery voltage and the black alligator clip to ground.
Check the voltage of each solenoid.
The voltage should be 12-VDC for each solenoid.
Press the engine brake breakout cable box button (1, 2, or 3) to activate the corresponding engine brake solenoid (1, 2, or 3).
Listen for a clicking sound when activating the brake solenoid. If no clicking sound can be heard when the button is pressed, the corresponding solenoid valve and the engine brake wiring harness must be checked separately to identify the faulty component. Refer to Procedure 020-012 (Engine Brake Solenoid Valve) in Section 20. Refer to Procedure 020-015 (Engine Brake Wiring Harness) in Section 20.
Remove the rocker lever cover. Refer to Procedure 003-011 (Rocker Lever Cover) in Section 3.
Install the splash shield , Part Number 3163092, to reduce the amount of oil being thrown by the fuel pump drive gear.
Start the engine.
Check the corresponding engine brake lever(s) and solenoid for the following:
Replace parts as needed. Refer to Procedure 020-012 (Engine Brake Solenoid Valve). Refer to Procedure 020-017 (Engine Brake Control Valve). Refer to Procedure 020-019 (Engine Brake Piston) in Section 20.
All overhead adjustments must be made when the engine is cold (any stabilized coolant temperature at 60°C [140°F] or below).
Remove the rocker lever cover and gasket. Refer to Procedure 003-011 (Rocker Lever Cover) in Section 3.
Locate the valve set marks on the outside of the vibration damper.
The set marks are A, B, and C:
With Air Compressor:
Remove the oil fill connector from the lower gear case cover.
Insert a 3/4-inch drive ratchet and extension into the air compressor drive.
Rotate the air compressor drive clockwise, as viewed from the front of the engine.
The crankshaft rotation is clockwise, as viewed from the front of the engine.
The cylinders are numbered from the front of the engine (1-2-3-4-5-6).
The engine firing order is 1-5-3-6-2-4.
Without Air Compressor:
Loosen the capscrews and rotate the cover or remove the oil fill tube, if equipped.
Use a 1 1/2-inch socket, push the barring gear into the gear mesh and bar engine over counterclockwise.
Each cylinder has four rocker levers:
The valves, brakes, and the injectors on the same cylinder are adjusted at the same index mark on the vibration damper.
Rotate the compressor drive or barring device in the direction of engine rotation, clockwise. Align the A mark on the vibration damper with the pointer on the gear cover.
Check the valve rocker levers on the given cylinder to see if both intake and exhaust valves are closed.
For older engines, locate the engine brake set marks on the outside of the vibration damper.
The set marks are BRAKE SET 1-6, and BRAKE SET 2-5, and BRAKE SET 3-4.
BRAKE SET 1-6: Cylinder 1 or 6 adjust
BRAKE SET 2-5: Cylinder 2 or 5 adjust
BRAKE SET 3-4: Cylinder 3 or 4 adjust
Press the engine brake lever down to verify that the camshaft follower is in contact with the camshaft.
Loosen the locknut on the brake lever adjusting screw, and back out the adjusting screw one turn.
Insert the feeler gauge, Part Number 3163530, between the bottom of the engine brake piston and the top of exhaust valve pin on the exhaust valve crosshead.
Tighten the adjusting screw until drag on the feeler gauge is felt. Proper drag means that there is no motion of the brake lever camshaft follower against the cam lobe.
Hold the engine brake lever adjusting screw, and tighten the locknut.
Remove the feeler gauge.
Check the running clearance:
If the running clearance does not fall in the given specifications, loosen the rocker lever shaft and rotate the rocker lever shaft, slightly, in the direction required to bring the running clearance within specifications.
Recheck the brake running clearance.
Repeat the process to adjust all engine brakes according to the chart shown earlier in this procedure.
Install the rocker lever cover and gasket. Refer to Procedure 003-011 (Rocker Lever Cover) in Section 3.
If failure resulted in coolant, oil, excessive fuel or excessive black smoke entering the exhaust system, the aftertreatment system must be inspected. Refer to Procedure 014-013 (Aftertreatment Testing) in Section 14.