New Holland T8010 Manual page 1377

Test Point
1 Measure voltage at
terminal 81 of starter
motor.
2 Ignition switch in Start
position.
Measure voltage at starter
terminal 79.
3 Ignition switch in Start
position.
Measure voltage at
intermediate starter relay
terminal 84.
4 Measure resistance from
starter motor case to
ground.
5 Set DVOM to read voltage.
Attach positive lead to
battery positive terminal.
Attach negative lead to
terminal 81 of starter
motor.
Turn key to START
position.
Less than 0.4 volts should
show on voltmeter.
Section 55 - Electrical System - Chapter 1
F - Starter Motor Test
Good Reading
12 volts
If good reading, go to next
test point.
12 volts
If good reading, go to test
point 4.
12 volts
If good reading, repair
open in 625A(W) circuit.
Less than 1 ohm
If good reading, go to next
test point.
If less than 0.4 volts
shown, and starter motor
does not operate, replace
starter motor.
55-1-196
Possible Cause of Bad Reading
Open circuit between starter terminal 81
and battery positive terminal.
Caution: When performing continuity
test on this circuit, ensure that the cable
is disconnected from the battery positive
terminal. Failure to do so can result in
damage to the test meter.
Open in B+ circuit from starter relay.
Go to next test point.
Open in B+ circuit.
Perform E - Intermediate Starter Relay
Test.
Check contact surface of starter motor
with engine. Ensure starter motor is
mounted securely. Check ground strap
between engine and chassis.
More than 0.4 volts showing on
voltmeter, replace cable between
battery positive terminal and starter
terminal 81.