HEXA

ELECTRICAL

Note:

The grooved ball bearing seal may be damaged if

the cap is not pierced in the center with a suitable

tool.

5. Fitted cover can only be removed by piercing

and prising out.

Note:

The grooved ball bearing seal may be damaged if

the cap is not pierced in the center with a suitable

tool.

6. Insert suitable assembly tool (2) in splines of

freewheel pulley (1).

7. Use the multi-point attachment (3) to stop the

rotor shaft and unfasten the freewheel pulley

with a box wrench.

8. Detach freewheel pulley.

TESTING INSTRUCTIONS:

2.1. TESTING OF RECTIFIER.

2.1.1 Testing of Positive power diode:

Place the black probe of the multi-meter on the

terminal B+ and red probe on the each of the

points where the stator winding ends are soldered

on the rectifier

(Points M1, M2, M3, M4, M5, M6).

Reading should be between 0.300V and

0.900V.Reverse polarity i.e. red probe on B+ and

black probe successively on M1, M3…..No

current should flow in this case i.e there should be

‘0’ appreciable change in the multi-meter reading.

2.1.2 Testing of Negative power diode:

With red probe of the multi-meter on the lower

hear sink into which the negative power diodes

are pressed i.e. D- and black probe on the M1,

M2, M3……. the multi-meter reading should be

with in 0.300V and 0.900V. Interchanging the

probe

(black on D).

No current should flow. Even

if one diode found defective in the above tests,

the rectifier assembly has to be replaced.

NOTE:

There are no excitation diodes in E8 155A

alternator.