Iveco/FPT N67 Engine

Tools: feeler gauge, hex key

1. Find TDC of cylinder n.1 (unperforated part of phonic wheel uppermost).
2. Adjust the clearance of cylinder n.1's valves using hex key, polygonal key and feeler gauge.
3. Rotate the crankshaft as shown in the firing-order table to adjust the remaining cylinders.

Tools: Setscrew wrench, Box wrench, Feeler gauge

1. Adjust clearance between rockers and valves using setscrew wrench, box wrench and feeler gauge.
2. Intake valves must be 0.25 ± 0.05 mm and exhaust valves 0.50 ± 0.05 mm.
3. Rotate drive shaft, balance cylinder 1 valves and adjust valves marked by asterisk in the table.
4. For 6 cylinder engines repeat with cylinder 6 balanced.
5. For 4 cylinder engines repeat with cylinder 4 balanced.

⚠ Some motors cannot undergo the passage from 50 Hz to 60 Hz and vice versa; refer to SI 191 1 Service Information.

1. Identify the code of the injection pump from the Stanadyne tag.
2. Act on droop setting adjustment screw, rotating clockwise the number of rotations from the chart.
3. Start the motor and operate maximum and minimum register screws to block accelerator lever.
4. Consider frequency fall from empty to full of about 2 Hz.
5. Block both adjustment screws with lock nuts.

⚠ Do not force the droop setting screw beyond its final position to avoid damaging the adjustment system.

1. Identify the injection pump code from the Stanadyne tag.
2. Act on the droop setting adjustment screw rotating it clockwise the number of rotations from the chart.
3. Start the motor and loosen the maximum regime adjustment screw; accelerate to obtain 62 Hz (1860 rpm) no-load speed.
4. Regulate the minimum regime screw to block the accelerator lever in the newly obtained position.
5. Block both adjustment screws with lock nuts (3.5 ÷ 4 Nm).

⚠ Coupling mistakes between the actuator hook and the injection pump lever can cause motor over-speed conditions.

1. Remove the three screws of the pump cover and remove the cover carefully.
2. Remove the connection of the fuel return pipe and the sealing from the cover.
3. Disconnect the wire of the stop electro-valve from the clamp and isolate it.
4. Reassemble the connection and the pump cover's original sealing on the ADC100 electronic actuator.
5. Slide the actuator towards the rear of the pump until the U-shaped hook engages the pump lever.
6. Tighten the ADC100 actuator to the injection pump using the supplied screws.
7. Reconnect the fuel return pipe to the connection on the actuator.

⚠ Coupling mistakes between the actuator hook and the lever of the injection pump can cause motor over speed conditions.

1. Clean external part of the pump, if necessary using solvents.
2. Disconnect wire of stop electro-valve from clamp on pump cover, isolating it.
3. Remove fuel return pipe from connection.
4. Remove three screws of pump cover.
5. Remove cover carefully so dirt won't penetrate inside pump.
6. Remove connection of fuel return pipe and sealing from cover.
7. Reassemble connection and original sealing on the ADC100 electronic actuator.
8. Position actuator on injection pump with highest part slightly tilted upwards.
9. Slide actuator towards rear of pump until U shape hook engages pump lever.
10. Tighten actuator to injection pump using supplied screws.
11. Reconnect fuel return pipe to connection on actuator.

⚠ With switched off motor but still hot the belt can operate without advance notice; wait for motor temperature lowering.

1. Loosen screw and relevant nut on belt stretching bracket.
2. Loosen bolt that fixes alternator to support.
3. Remove worn Poly-V belt from pulleys and driving rollers.
4. Fit new Poly-V belt on pulleys and guide rollers.
5. Stretch POLY-V belt.
6. Lock screw and bolt that fixes alternator to support.
7. Run engine a few hours and check belt stretching.

⚠ Only proceed with the engine stopped and at low temperature to avoid burning.

1. Provide suitable containers to avoid coolant dispersion.
2. Loosen the retaining elements and remove the sleeves connecting engine circuit to heat exchanger; wait until emptied.
3. Repair the circuit ensuring the sleeves are perfectly sealed.
4. Fill up the circuit and refill the engine and heat exchanger until complete top up.
5. With filler cap open start the engine and keep it idling for nearly one minute to bleed air; stop and top up again.

⚠ If the procedure is not followed, the radiator fluid level will be incorrect.

1. Position container beneath radiator tap to recover the coolant.
2. Open tap and allow all coolant in radiator to flow out.
3. Charge the coolant for the first time.
4. Leave radiator cap open.
5. Start engine and leave running at least a minute so all air is removed.
6. Stop engine and top up.

⚠ Use suitable protective equipment for hands, face and eyes; proceed only with engine stopped.

1. Remove the filter cover after unscrewing the locking handle.
2. Remove the external cartridge ensuring no dust enters the sleeve.
3. Blow dry compressed air through the filter element from inside outward (max 200 kPa).
4. Do not use detergents or diesel and never use tools to beat the element.
5. Reassemble by repeating the operations in reverse order.

⚠ At assembly check that adhesive rubber blocks are sound and positioned by the brackets.

1. Remove angular brackets blocking tank inside base by undoing relevant fasteners.
2. Remove tank from its seat.

⚠ Engine oil is highly polluting and harmful; protect skin and eyes and dispose of properly.

1. Check with engine disconnected and possibly cool.
2. Draw off flexible rod from its slot and check level within etched tags of minimum and maximum.
3. If difficult, clean rod with clean cloth, put back in slot, draw it off again and check level.
4. If level close to minimum tag, fill through upper top or lateral top with tops and rod removed.