Alternator; Alternator Maintenance - Zetor 3321 SUPER Operator's Manual

ALTERNATOR

Alternator is located on the right hand
side of engine. Charging status is in-
dicated by the red indicator light on the
instrument panel. Damaged indicator
light bulb must be immediately exchang-
ed at service shop.
All wires connected with the al-
ternator must be disconnected
when repairing tractor by electric
arc welding. Protect the wire
"+B" against short circuit.
ELECTRICAL INSTALLATION
A 196

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.
A 197