Generator - Mitsubishi 4DQ50 Service Manual

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GLOW PILOT LAMP
BATTERY t2V-jOOAH 2Eo
Fig.3-39 Diagram of electric wiring (24 system)
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The wiring diagrams given herein cover only the engine. System is of the so-called
negativeearth type and standard specification is 12 volts and wiring diagram shows Fig. 3·37
(in case of A.C. Dynamo) and Fig. 3-38 (in case of D.C. Dynamo). 24 volts (Fig.3-39) is
special specification. In this case, 4DQ50 Engine is equipped with tension pulley in stead of
Dynamo. To follow the service hints given herein in addition to those in "lubrication Table"
will maintain the electric system trouble-free.
Prior to making any service, be sure to turn off battery switch.
6-1 D.C. Generator
This generator is a D.C shung-wound type, whose main components are field coil,
armature and brushes.
1) Check for wrong wiring and
loose terminals.
Brush Ball bearing
2) Inspect brushes at times: re-
t.Ii: .... ...:..::...:...:.::,."",,-IUL...;..;,,,;..:,,;,.;;,...:..;,,;,,~:.:...:J~i'-!ItlZ~-7I
move carbon particles from
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around them and make sure
that they move smoothly in
their holders. If badly affected
in contact surface or worn
more than 11 mm in height,
replace with new brushes.
setting new
brushes~
polish
them with #250 sand paper so
- 51-
Fig. 3-41 Wear of commutator