Ammann ARR 1575, Workshop Manual

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258 ARR 1575
15 Engine
15�3�4 Batteries
The batteries are filled with an acid at a density of 1.28 g/ml by the manufacturer and charged sufficiently for immediate use. When the
starting power is insufficient, recharging is required.
Charging
• The battery must be recharged if the open-circuit voltage is below 12.5 V due to a longer storage time. The open-circuit voltage
shall be checked after 2–4 quarters from the production date. If the open-circuit voltage is below 12.5 V, the battery must be
recharged before a longer storage time to a level from 12.7 to 12.8 V. The open-circuit voltage shall be measured with a digital
multimeter. The measurement should be made at about 20 °C.
• Ensure good ventilation of working areas.
• Use suitable DC chargers only.
• Connect the plus pole of the battery with the plus output of the charger; connect the minus pole in a similar way.
• Turn on the charger after the battery is connected and turn it off after it is recharged.
•
Recommended charging current: 1/10 battery capacity in Amperes (Ah).
• If the acid temperature exceeds 55 °C, interrupt the charging.
• The battery is fully charged when the charging voltage does not increase further in the course of two hours.
• When the charging is completed, always measure the open-circuit voltage (do it no sooner than 1 hour after the charging).
Removal
• While disassembling, first disconnect the cable of the negative (–) pole and then of the positive (+) pole. Never disconnect the bat-
tery when the engine is running.
Installation
• Remove the protective cover of the plus pole only in the machine while connecting the pole terminals and put it on the pole of the
removed battery to prevent short-circuits.
• Clean the poles and clamps and apply a thin layer of grease on the poles.
• First, attach the plus poles and make sure the clamps are firmly attached.
• Leave at least one degassing vent free.
15�3�5 Alternator replacement
The alternator is a part of the engine. In the event of a fault, contact the engine manufacturer Yanmar.
15�3�6 Starter replacement
The starter is a part of the engine. In the event of a fault, contact the engine manufacturer Yanmar.