SDLG WP6, Руководство по обслуживанию

Страница: 111 / 121

Service Manual for WP6 Diesel Engine
101
of generator W/R/AC
terminal (should be
about half of B+
terminal voltage).
h. Check whether battery
charging is normal.
heavy load condition, then the wire or
connector should be replaced.
g. Oxidized lead foot and the housing that
used to install grounding bolts should be
polished before reassembling.
h. Retighten the loose nuts and lug plates,
re-plug the loose connectors firmly.
NOTICE: Reassembled or retightened
parts should be run in heavy load and will
be overheat, check whether the overheat is
still there 3~5min later.
If there is big difference between terminal
W/R/AC output voltage and normal range and
big voltage drop happened after the engine
loaded, then it means failure in generator
rectifier bridge or stator, repair or replace.
If charging current drops to about 10A 10min
later, or charging current reaches to 30-90A
for a long time, then the battery is damaged,
repair or replace the battery.
c) High charging voltage
Fault 3: High charging voltage
Phenomenon Fault detection Troubleshooting
High charging
voltage reading on
voltmeter
a. Check whether
voltmeter is damaged.
b. Check whether wires,
connectors and bolts
in charging system are
loose and producing
too much heat, check
whether there is short
circuit in circuits and
generator housing.
c. Check whether the
battery can work
normally.
d. Measure output
voltage of generator
W/R/AC terminal
(should be about half
of B+ terminal
voltage).
e. The fault is still
existed after finishing
above inspections.
Measure generator B+ terminal voltage,
which should be within 27.8~28.4V, if the
voltage is normal, then it means voltmeter
failure and should be repaired or replaced.
a.
Retighten the bad-contact parts and loose
wires, re-plug the loose connectors firmly.
b. If there is short circuit, reconnect the
wires.
c. Check whether the charging current drops
quickly in short time (from 50A to 10A or
lower); consider a battery replacement if
not.
d. Check whether battery is clean and dry,
whether its terminals and clamps are in
good condition, replace them if damaged.
If there is big difference between terminal
W/R/AC output voltage and normal range and
big voltage drop happened after the engine
loaded, then it means failure in generator
rectifier bridge or stator, repair or replace
generator regulator, stator or the whole
generator.