16-30 ELECTRICAL SYSTEM
Check the tightening torque with flywheel puller [A].
Special Tool - Flywheel Puller Assembly, M38 × 1.5/M35 ×
If the rotor is not pulled out with 20 N·m (2.0 kgf·m, 15
ft·lb) of drawing torque, it is installed correctly.
If the rotor is pulled out with under 20 N·m (2.0 kgf·m, 15
ft·lb) of drawing torque, clean off any oil dirt or flaw of the
crankshaft and rotor tapered portion, and dry them with
a clean cloth. Then, confirm that it is not pulled out with
Tighten the alternator rotor bolt [B] while holding the alter-
nator rotor steadily with the holder [A].
Special Tools - Grip [C]: 57001-1591
Rotor Holder: 57001-1666
Stopper [D]: 57001-1679
Torque - Alternator Rotor Bolt: 155 N·m (16 kgf·m, 115 ft·lb)
Install the alternator cover (see Alternator Cover Installa-
There are three types of alternator failures: short, open
(wire burned out), or loss in rotor magnetism. A short or
open in one of the coil wires will result in either a low output,
or no output at all. A loss in rotor magnetism, which may be
caused by dropping or hitting the alternator, by leaving it
near an electromagnetic field, or just by aging, will result in
To check the alternator output voltage, do the following
Turn off the ignition switch.
Set up the fuel tank (see Speed Sensor Removal).
Disconnect the alternator lead connector [A].
Connect the hand tester as shown in the table 1.
Start the engine.
Run it at the rpm given in the table 1.
Note the voltage readings (total 3 measurements).
Table 1 Alternator Output Voltage
Tester (+) to
250 V AC One Black lead Another Black lead 42 V or more
Tester (–) to
@4 000 rpm