NANO

608

ELECTRICAL

8.4 ALTERNATOR

CHECKSONENGINE

a. Battery charge indicator lamp does not glow:

1. Start the engine and check if lamp is faulty.Check

the continuity of respective fuse.Replace blown

fuse.

2. Start the engine and connect an ammeter of suitable

range in series with the positive terminal of the

battery.Raise the engine speed to near about 2000

rpm and switch ‘ON’ the Headlamp, Parking

lamp, Heater, Tail lamp and other electrical loads.

Rated current output should be reached without

voltage dropping to 13 volts. If not, remove

Alternator for thorough checks.Reduce the engine

speed to near about 1500 rpm, and ensure that

the ammeter reading falls around 3 to 5 Amps.

Check the voltmeter reading. It should read between

13.8 to 14.2 volts. If not, remove the alternator and

check the voltage regulator.

b. Warning lamp continues to glow

The alternator belt tension values are 120~130 Hz

on lower span for new belt & 100~110 Hz for re-

tensioning the used belt. Start the engine and

check belt tension

(indicated by arrow) found slack,

adjust the belt deflection to the specified value.

Repeat test.

TORQUE VALUE TABLE

APPLICATION

TORQUE

VALUE

(Nm)

Alternator to alternator bracket,

bolt M8x75l

22 ± 2

Alternator to ‘a’ mounting arm,

bolt M8 x 28l

22 ± 2

Pulley Hexagon Nut

40 - 47

Rectifier & regulator

2.1 -2.9

Hexagon through bolt

5 - 5.7

A point screw

1.5 - 2

REMOVAL & REFITMENT OFALTERNATOR

REMOVAL

1. Disconnect battery negative terminal.

CAUTION:

Ensure that both terminals areAWAY from

the each other.

2. Disconnect the electrical connector.