Test 1: Low Pressure Circuit Check
Step Action YES NO
Check the conformity of the low pressure circuit connections.
Are the low pressure circuit connections in order?
Go to Step 2.
Carry out the required repairs.
Check the condition of the priming pump, and that it is working properly.
Look for leaks on the unions.
Are there leaks in the hoses and unions?
Carry out the required repairs.
Go to Step 3.
Check for air bubbles in the diesel fuel.
Are there any air bubbles in the low pressure circuit?
Bleed the low pressure circuit.
Place a container under the filter:
· Disconnect the leak return hose from the filter and cap the filter.
· Pump with the priming pump until there is no air left.
· Reconnect the return hose immediately.
Low pressure circuit correct.