GASKET 2P0405 - Caterpillar

Checking Before Start-Up
Check the battery charger for proper operation. If the batteries are properly charged, the ammeter will register near "0" (zero).Note: If a "No Comm" message is present on the charger display, ensure the following are true: the charger switch is in the ON position, AC power supply is connected to the charger and the alarm module circuit board is plugged into the charger properly.The battery charger must not produce excessive current during start-up. Alternatively, automatically disconnected the charger for start-up. If the engine has an alternator, the charger must be automatically disconnected during start-up and during engine operation.Battery Charger Operation
Never disconnect any charging unit circuit or battery circuit cable from the battery when the charging unit is operated. A spark can cause an explosion from the flammable vapor mixture of hydrogen and oxygen that is released from the electrolyte through the battery outlets. Injury to personnel can be the result.
Perform the following procedure to check the charger operation:
Ensure that the charger is turned ON.
Observe the ammeter on the battery charger with the overhead DC lights turned OFF.
Turn ON overhead DC lights.
Verify that charging amps on the battery charger have increased.
If charging amps have not increased, check the 20A overhead DC lighting and the 60A battery charger breakers located near the battery disconnect switch. If these breakers are reset, check the battery charger diagnostic indicators.Overcharging of Batteries
Overcharging reduces the service life of batteries. Use a battery charger that will not overcharge the battery.Overcharging is indicated by the following symptoms:
The battery is warm to the touch.
A strong odor of acid is present.
The battery emits smoke or a dense vapor (gas).Perform one of the following procedures if the battery shows symptoms of overcharging:
Reduce the rate of charging by a significant amount. Complete the charging at the reduced rate.
Turn OFF the charger.Table 1 describes the effects of overcharging on different types of batteries.
Table 1
Effects of Overcharging Batteries
Type of Battery Effect
Cat General Service Batteries
Cat Premium High Output Batteries All of the battery cells have a low level of electrolyte.
When the plates of the battery are inspected through the filler holes, the plates may appear to be warped. This is caused by an excessive temperature.
The battery may not pass a load test.
Cat Maintenance Free Batteries The battery may not accept a charging current.
The battery may not pass a load test. Checking After Stopping
Ensure that the battery charger is connected properly. Observe the meter of the charger. Record the amperage.