Alternator; Alternator Maintenance - Zetor 3320 Operator's Manual Supplement

ALTERNATOR

Alternator is located on the right hand
side of engine. Charging status is
indicated by red indicator light on the
gauge display.
Damaged indicator light bulb
12 V 2 W must be immediately
exchanged. If the indicator light
bulb is damaged the battery isn't
charged!
All wires connected with the
alternator must be disconnected
when repairing tractor by electric
arc welding. Protect the wire
"+B" against short circuit.
ELECTRICAL INSTALLATION
S42

ALTERNATOR MAINTENANCE

- Protect the alternator against penetration of water or diesel fuel when washing and
cleaning tractor.
- Battery must never be disconnected at operation!
- The alternator must never run without load i.e. with disconnected terminal "+B"
and connected terminal "+D". This status creates excessively high voltage of
alternator at increased engine speed and this voltage damages the alternator
electronics.
- Never create the short circuit of any alternator connector at operation.
- Alternator must not be additionally excited. Alternator electronics is damaged in
this case.
- Keep the perfect electrical connection of alternator terminals and perfect alternator
ground.
47
S38