MAINTENANCE OF THE HEMTT - OD1662 - LESSON 1/TASK 2
Step 11.
In this step she checks the input side of circuit breaker
number 5 for 22 to 28 volts. Again, she received a voltage indication
of 25.5; therefore, she will move on to the next step.
Step 12.
Now SGT Elliott checks the neutral safety switch for proper
adjustment.
She finds the switch is adjusted properly, and proceeds
to step 13.
Step 13.
This step tells SGT Elliott to check for voltage at the
starter relay. She should receive a voltage reading of between 22 and
28 volts, with the ENGINE switch set to the START position. In this
step, she received 25.5 volts, and proceeds to the next step.
Step 14.
Now SGT Elliott checks for 22 to 28 volts at the starter
relay INPUT terminal, with the ENGINE switch in the OFF position.
Again, she received a voltage indication of 25.5 volts, and proceeds
to step 15.
Step 15.
In this step she checks for 22 to 28 volts at the starter
relay OUTPUT terminal, with the ENGINE switch set to the START
position.
Since she again received a voltage indication of 25.5
volts, she moves on to the next step.
Step 16.
SGT Elliott checks for loose or damaged connections at the
starter.
The connections were tight and not damaged. She moves on to
step 17.
Step 17.
Finally SGT Elliott tests the starter motor.
For this
test, she will need a multimeter. Also the vehicle engine cover must
be opened and the engine side panel removed. She now begins the test
by measuring the voltage between ground (1) (figure 28 on the
following page) and the positive terminal (2) of the starter solenoid.
Since there was an indication of voltage, she turns the ENGINE START
switch to the ON position. In this phase of testing, SGT Elliott will
need an assistant, PVT Jones.
While holding the ENGINE STOP switch
engaged, PVT Jones cranks the engine, and SGT Elliott measures the
voltage between ground (1) and wire number 45 on the starter solenoid.
Since she received a voltage indication of at least 24 volts, and the
starter does not crank the engine, the starter motor is defective and
needs to be replaced.
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