Cummins/Onan M11 Generator Set

Tools: Belt tension gauge, Part No. ST-1293

1. Loosen the adjusting screw locknut.
2. Loosen the adjustment link locking capscrew.
3. Loosen the pivot capscrew and nut.
4. Use belt tension gauge, Part No. ST-1293, to measure belt tension.
5. Turn the alternator adjusting screw clockwise to tighten the belt.
6. Tighten the adjusting screw locknut against the retainer and the adjustment link locking capscrew.
7. Tighten the pivot capscrew and nut.

⚠ Do not adjust belt tension to full value with the adjusting screw. Belt tension can increase when the locknut is tightened and cause reduced belt and bearing life.

Tools: Belt tension gauge, Part No. ST-1293

1. Loosen the idler pulley shaft locknut.
2. Use belt tension gauge, Part No. ST-1293, to adjust the belt to the correct tension.
3. Tighten the idler pulley shaft locknut.
4. Check the belt tension again to make sure the belt is not too tight.

⚠ Do not pull or pry on the fan to manually rotate the crankshaft.

⚠ An overtightened setting on the injector adjusting screw will produce increased stress on the injector train and the camshaft injector lobe.

Tools: STC tappet adjusting tool, Part No. 3823348, Torque wrench, Part No. 3376592, Torque wrench adapter, Part No. ST-669, Feeler gauges

1. Remove the crankcase breather tube from the crankcase breather outlet.
2. Remove the 16 capscrews, isolators, and spacers from the cover.
3. Remove the rocker lever cover and gasket.
4. Rotate the accessory drive shaft clockwise until the A valve set mark aligns with the pointer.
5. Loosen the injector adjusting screw locknut and tighten the adjusting screw until clearance is removed; then one additional turn to seat the link.
6. Loosen the adjusting screw until the STC tappet touches the top-cap of the injector.
7. Place the STC tappet adjusting tool, Part No. 3823348, on the top-cap and insert the locating pin.
8. Apply thumb pressure to hold the tappet in the maximum upward position.
9. Use torque wrench, Part No. 3376592, to tighten the adjusting screw to 0.6 to 0.7 Nm [5 to 6 in-lb].
10. Hold the adjusting screw and tighten the locknut to 61 Nm [45 ft-lb] without adapter or 47 Nm [35 ft-lb] with adapter ST-669.
11. Remove the tappet adjusting tool and check the injector push rod can be rotated by hand.
12. Adjust the valves on the appropriate cylinder with a feeler gauge per the sequence chart.
13. Tighten the valve adjusting screw and locknut, then check lash with a feeler gauge.
14. Install the cover, 16 isolators, spacers and capscrews; tighten to 15 Nm [130 in-lb].

⚠ A fully populated USB cable, Part Number 4918419, or DB9F-DB9M serial cable, Part Number 4918418, must be used.

1. Connect the DB9F-DB9M serial cable, Part Number 4918418, or USB cable, Part Number 4918419, to the computer.
2. Connect the other end of that cable to the INLINE™5 datalink adapter, Part Number 3165033.
3. Supply +8 VDC to +50 VDC at 250mA through the OEM connector or a separate power source.
4. Connect the appropriate datalink cable to the INLINE™5 datalink adapter, Part Number 3165033.
5. Connect the other end of the datalink cable to the vehicle cab or engine compartment datalink connector.
6. Launch the electronic service tool application software.

⚠ Pull the cover and the element straight out when removing them from the housing to avoid damage to the element.

⚠ Holes, loose end seals, dented sealing surfaces, and other forms of damage render the cleaner inoperative and require immediate element replacement.

1. Remove the wing nut that secures the bottom cover to the cleaner housing and remove the cover.
2. Pull the element down from the center bolt.
3. Remove the gasket from the outlet end of the housing.
4. Clean the paper element with compressed air approximately 207 kPa [30 psi], not holding the air jet too close.
5. Check the restriction after cleaning; replace the element if necessary.
6. Install the element in the reverse order of removal.

⚠ Do not remove the radiator cap from a hot engine. Hot steam will cause serious personal injury.

⚠ The valve must be in the ON position to prevent engine damage.

1. Remove the coolant system pressure cap and close the shutoff valve(s), if equipped.
2. Turn the valve on the filter head to the OFF position.
3. Remove and discard the coolant filter. Clean the gasket surface.
4. Apply a film of lubricating oil to the gasket sealing surface of the new filter.
5. Install the new filter; tighten until the gasket contacts the filter head surface.
6. Tighten an additional one-half to three-fourths of a turn.
7. Turn the valve on the filter head to the ON position and install the pressure cap.
8. Operate the engine and check for leaks.
9. After air has been purged, check the coolant level again.

⚠ Do not use caustic cleaners in the cooling system. Aluminum components will be damaged.

⚠ Wait until the temperature is below 50 C [120 F] before removing the coolant system pressure cap.

⚠ Fleetguard RESTORE contains no antifreeze. Do not allow the cooling system to freeze during the cleaning operation.

1. Drain the cooling system. Do not allow the cooling system to dry out. Do not remove the coolant filter.
2. Immediately add 3.8 liters [1 U.S. gal.] of Fleetguard RESTORE or RESTORE PLUS for each 38 to 57 liters [10 to 15 U.S. gal.] of capacity, and fill with plain water.
3. Turn the heater temperature switch to high.
4. Operate the engine at least 85 C [185 F] for 1 to 1-1/2 hours.
5. Shut off the engine and drain the cooling system.
6. Fill the cooling system with clean water.
7. Operate the engine at high idle for five minutes with coolant temperature above 85 C [185 F].
8. Shut off the engine and drain the cooling system.
9. If water drained is still dirty, flush again until clean.
10. Fill with fully formulated coolant or a 50/50 mixture of antifreeze and good quality water.
11. Install the pressure cap, operate the engine until it reaches 80 C [180 F], and check for leaks.

⚠ Mechanical overtightening of the filter can distort the threads or damage the filter element seal.

Tools: Filter wrench, Part No. 3376807

1. Clean the area around the fuel filter head and filter.
2. Remove the fuel filter with filter wrench, Part No. 3376807.
3. Remove the thread adapter sealing ring.
4. Use a clean, lint-free towel to clean the filter head gasket surface.
5. Install a new thread adaptor sealing ring supplied with the new filter.
6. Apply a light coating of clean engine oil to the filter gasket surface.
7. Fill the filter(s) with clean fuel.
8. Install the filter until the gasket contacts the filter head surface.
9. Tighten an additional one-half to three-fourths of a turn.

⚠ Overtightening can damage the threads.

1. Shut off the engine.
2. Use your hand to open the drain valve; turn counterclockwise approximately 1 1/2 to 2 turns until draining occurs.
3. Drain the filter sump of water until clear fuel is visible.
4. Turn the valve clockwise to close the drain valve; do not overtighten.

⚠ Avoid direct contact of hot oil with your skin.

⚠ Used engine oil can be carcinogenic and can cause reproductive toxicity.

Tools: Oil filter wrench, Part No. 3375049

1. Operate the engine until the water temperature reaches 60 C [140 F]. Shut off the engine.
2. Remove the oil drain plug from the bottom of the lubricating oil pan.
3. Clean the area around the lubricating oil filter head.
4. Use oil filter wrench, Part No. 3375049, to remove the filter.
5. Clean the gasket surface of the filter head and remove the o-ring if stuck.
6. Use clean 15W-40 oil to coat the gasket surface of the new filter.
7. Fill the filter with clean 15W-40 oil.
8. Install the filter; tighten until gasket contacts head, then one-half to three-fourths turn more.
9. Install the oil drain plug.
10. Fill the engine with clean oil to the correct level.
11. Operate the engine at idle speed and inspect for leaks.
12. Shut off the engine, wait approximately 10 minutes, then check the oil level.

⚠ Do not use volatile cold starting aids in underground mine or tunnel operations due to the potential of an explosion.

⚠ Starting fluid is highly flammable and explosive. Keep flames, sparks, and arcing switches away from starting fluid.

⚠ Do NOT use starting fluid without metering equipment.

1. Set the throttle at idle.
2. Disengage any driven accessories and put the transmission in neutral.
3. Activate the ignition switch to open the fuel pump shutoff valve.
4. While cranking the engine, inject a metered amount of starting fluid.
5. Do not increase engine speed above low idle until coolant temperature gauge needle starts to move or 10 minutes have elapsed.

1. Allow the engine to idle 3 to 5 minutes before shutting it off after a full load operation.
2. Turn the ignition key switch to the OFF position.
3. If the engine fails to stop running, rotate the manual fuel shutoff thumb screw counterclockwise.