Perkins — Perkins Industrial Engine Manual (EN)

UENR0623-02 93 Electrical System and the starting motor cable that goes to the starting motor are within specifications. Go to step 6. c. The starting motor voltage is less than the voltage specified in table 14 . The voltage drop between the battery and the starting motor is too great. Go to step 5. 5. Measure the voltage. a. Measure the voltage drops in the cranking circuits with the multimeter. Compare the results with the voltage drops which are allowed in table 15 . b. Voltage drops are equal to the voltage drops that are given in table 15 or the voltage drops are less than the voltage drops that are given in table 15 . Go to step 6 in order to check the engine. c.

The voltage drops are greater than the voltage drops that are given in table 15 . The faulty component should be repaired or replaced. 6. Rotate the crankshaft by hand in order to ensure that the crankshaft is not stuck. Check the oil viscosity and any external loads that could affect the engine rotation. a. If the crankshaft is stuck or difficult to turn, repair the engine. b. If the engine is not difficult to turn, go to step 7. 7. Attempt to crank the starting motor. a. The starting motor cranks slowly. Remove the starting motor for repair or replacement. b. The starting motor does not crank. Check for the blocked engagement of the pinion gear and flywheel ring gear. Note:

Blocked engagement and open solenoid contacts will give the same electrical symptoms.