URAL Motorcycles 750cc Series, Руководство по ремонту

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To ensure full charging of the battery:
- Top up the cells with distilled water or acidic solution with .a density of 1.40 depending on the
electrolyte density;
- Charge with 1.5-2.0 A current until abundant degassing is evident in all the cells and specific
gravity of electrolyte and voltage in all the cells are stable for the period of 2 h.
The detailed manual for battery 6CT 18-32 A is enclosed to the motorcycle.
3. ALTERNATOR
The motorcycle is fitted with a. c. DENSO alternator .
Specifications
Type ..............……… 100211-1680
Rated voltage, V .........14
Rated output, W ............. 500
Testing the Alternator Performance
Test the alternator performance on a special bench at no-load and under load.
In all tests where voltage is applied, strictly observe polarity of connections, i. e., connect the
positive wire to a positive terminal only.
Testing the Alternator on the Motorcycle
If no test bench is available, check the ratings of the alternator with the engine running.
- Connect the voltmeter to positive and negative terminals of the storage battery
- Start the engine. Whilst starting the voltage should drop to 9,5 V
- Engine speed of 3500-4000 rpm should produce voltage of
13.5
-15
.5
V
DC
When so, the alternator and voltage regulator are intact.
Precautions:
To prevent the alternator from damage all required precautions should be followed
. Disassemble
and repair the alternator only with shops having specialized equipment.
- In the event that an extra battery is connected (for example, for better start) observe polarity
connecting the batteries to each other.
- Strictly observe polarity connecting the battery to the charger.
-Never run the engine with battery disconnected.
-Never short-circuit the terminals of the battery and voltage regulator
-Strictly observe polarity connecting the alternator to circuits
Changing the brush holder:
In the event that brushes are worn out and protrude for less than 5 mm from the holder replace
the holder in assembly with the brushes.
To replace:
- Undo three screws on the rear cover of the alternator (Fig. 105, Pos. 1)
- Loosen contact stud nut and remove the cover (Fig. 105, Pos. 2)
- Undo two bolts of the brush holder and take it out (Fig. 106)
Proceed in reverse sequence to assemble the alternator.
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