Service Manual - Guardian Power Systems
Contents
1. Stop automatically Is the fuel indicator light on Add sufficient fuel Light still on Remove the control panel Disconnect the diesel Is the oil indicator light on Add sufficient oil Light still on Check for the clogged fuel filter Open the air filter to check whether the filter is clogged Reconnect the injection pump high pressure fuel tube and injector after disassemble the injector Tighten the nuts on high pressure tube Restart the engine to see how the injector Take off the inlet tube on the injection pump to check whether fuel flow out Yes Check and clean the tube fuel valve fuel filter Replace them if necessary Loose the nuts on high pressure side of injection pump Restart the engine to see whether the works alerter pump work normally Clogged Check whether the Check whether the circuit of injection hole works magnetic valve is open Or maybe it problem normally is poor contacted Circuit Clean or replace the filter Replace the injector Engine racing Turn the speed adjustment lever to check whether the gear of injection pump is stuck Stuck Troubleshooting Not stuck the cover of pump to Disassemble injection check whether the gear rack and shift fork are normal Abnormal Troubleshooting Normal Check whether the step motor is normal Abnormal Replace it Normal Disconnect2. Hard to start Check the throttle valve is open Check the diesel indicator is on Check the oil indicator is on or or not Check whether the oil is too Yes gt E y sticky or not if it is cold season No Yes Yes Light still on Light still on Remove the control panel Check for the clogged fuel filter Disconnect the diesel alerter Clean or replace the oil filter If you tried many times still can Is speed adjustment lever on Restart the generator check Is there air inside the fuel tube not start the engine There must be too much diesel inside larger throttle situation whether the speed is too low 7 the cylinder Turn the speed adjustment lever to throttle off Turn the lever to larger throttle Yes No position for decompression position i ma gt A Turn on the power of starter to Replace the battery by a new one run the engine more than ten with sufficient power times Turn the speed wie oe gi adjustment lever back to larger throttle position before restarting No Yes Yes Steps for releasing the air in the fuel tube 1 Add sufficient fuel into the tank 2 Loose the two nuts on left overhaul cover and remove the cover 3 Take off the inlet tube from the magnetic valve and open the fuel valve Re put the inlet tube back onto the magnetic valve quickly as soon as there is fuel come out from the tube 4 Restart the generator according to the user manual
3. the 6P connector from the inverter unit Start the engine and check the two wires from stator for short circuit Normal Replace the Replace the stator inverter Abnormal No AC output Check whether the switch of Is the overload light on Remove the control panel to Turn on and off the smart short circuit protector is OFF E see whether the circuit and switch to see whether the clips inside are all well speed changes or not connected Changes OFF Yes No No difference Restart the engine to see Repair or replace the parts Replace the inverter whether the light is on or not after five minutes break Start the engine after disconnects the 6P pin on the inverter Test whether there is voltage exists between three black wires of the stator No DC output Check whether the switch of short circuit protector of DC is On Off Restart the engine after remove the control panel Check whether there is DC voltage exists on DC socket DC protector connecting pins by DC ammeter No DC voltage Find the part between no voltage and with voltage Repair or replace it Open the case and take off the DC input that on voltage stabilizer Start the engine to measure whether there is AC voltage exists No Replace the stator Is the voltage stabilizer well connected at Yes Replace the voltage stabilizer LOW AC OUTPUT Open the air filter to see Is
4. the valve clearance too wide whether the filter element is Check the engine to see Normal Whether the air valve blow by abnormal Repair or replace the damaged part gas whether the piston ring is clogged or not worn out whether the cylinder is worn out Clogged Too wide Clean or replace the element Adjust the clearance Oil alert light is blinking Engine speed does not stabilize or stall Fume sometimes Check the oil level in the Remove the maintenance cover Recheck the system after clean Recheck the system after engine and disconnect the circuit of oil or replace the oil filter replace the oil alert alarm system to check whether it works normally Abnormal Low Abnormal OK Perform the indicator system Clean or replace the filter element Found the problem troubleshooting a periodically according to the user manual Disassemble the oil pump to see whether it is damaged Disassemble the engine and clean it Damaged Replace the oil pump
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