MASSEY FERGUSON MF 135 - Page 55

Checking Water Lever
G The level of the electrolyte should be
checked periodically, and distilled water
added to bring it up to correct level. Do not
overfill as the electrolyte will spill onto top
of battery through the vent plugs during op-
eration.
The level of e 1 e ctr o 1 y t e should be
maintained to the bottom of the filler tubes.
NaTE: Always use distilled water
or rain water in the battery.
Fig. 66 - Alternator
Alternator (See Fig. 66)
The alternator on the MF 135 Tractor is
the latest advancement in providing electrical
power to supply the demands of electrically-
operated assemblies found on the Tractor.
The following precautions must be observed
to ensure maximum life and performance of
the alternator.
1. When installing a battery, always
make absolutely sure the ground polarity of
the battery and the ground polarity of the al-
ternator are the same. If a battery of the
wrong polarity is connected into the charg-
ing system, or if the battery is reversed
when installing it, the battery is directly
shorted through the diodes. Consequently,
the diodes and wiring are endangered by
high current flow. Burned wiring harness
and burned "open" diodes probably will re-
sult.
2. When connecting a booster or "slave"
battery, make certain to connect the nega-
tive battery terminals together and the pos-
itive battery terminals together. Failure to
observe this precaution will result in the
same damage as just described previously.
3. When connecting a charger to the bat-
tery, connect the charger positive lead to
the batterypositive terminal and the charger
negative lead to battery negative terminal.
Failure to follow this procedure will result
in the same damage as described in the first
precaution.
4. Never operate the alternator on open
circuit. With no battery or electric load in
the circuit (open circuit), the alternator can
build up high voltages which could be ex-
termely dangerous to anyone who might ac-
cidentally touch the alternator battery termi-
nal. Before making tests or" on-the-Trac-
tor" checks, make sure that all connections
in the circuit are tight and secure.
5. Do not short across or ground any of
the terminals on the alternator or regula-
tor. Any artificial circuit set up by pur-
posely grounding or shorting any of the al-
ternator or regulator terminals can cause
serious electrical malfunctions that might
endanger components of the electrical sys-
tem.
6. Do not attempt to polarize the al-
ternator. Alternator polarizing is not nec-
essary, since the voltage developed within
the alternator is of both polarities and the
diode rectifier automatically controls the di-
rection of current flow. It is of vital im -
portance, as discussed in the first precau-
tions, that the battery ground and the alter-
nator ground be of the same polarity for di-
ode protection.
Fan Belt (See Fig. 67)
CED Adjust the fan belt tension so as to
maintain 1/2 to 3/4" deflection between the
widest span area.
SMV Emblem and Bracket -
See Page 54
Safety Flashing Amber Light
(See Fig. 68}
The use of a flashing light is acceptable
in most areas. However, some areas may
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