7.3. Check of a state and replacement of the battery

Check

 PERFORMANCE ORDER

1. Disconnect both wires from the battery.

The negative wire always has to be disconnected first of all and be connected in the last. If the stereosystem established on the car is equipped with a security code before disconnecting the battery make sure that you have the correct combination for introduction of the equipment to action!


2. Check electrolyte level in the battery (concerns only equipped with removable covers the batteries needing service) – electrolyte has to hide completely lamels, otherwise in banks the corresponding amount of the distilled water follows. DO NOT POUR, – excess of electrolyte at excessive battery charging will begin to overflow mouths! By means of the areometer (ask in shops of automobile accessories) measure the specific weight of electrolyte (see an accompanying illustration). Uncover jellied mouths and take away the areometer electrolyte test serially from each of battery cans. Following instructions of manufacturers, determine the specific weight of electrolyte by the provision of a measuring float of the device. At the normal level of a charge the specific weight of electrolyte has to make 1.270 units (a green zone of a measuring scale). At excessively low density of electrolyte (a red zone of a scale) the battery should be charged (see the Head Routine maintenance). The output tension of the battery has to make 12.6 B or is slightly higher.


The nominal rate of density of electrolyte is defined depending on the ambient temperature (and it is directly proportional to it) – use the map of temperatures delivered by manufacturers in a set to the battery.


3. More exact check of a condition of the battery can be made by means of the universal measuring instrument (ask in shops of automobile accessories). The device allows to define ability of the battery to a provoachivaniye of a starter and giving of food to onboard consumers of the electric power at the raised loads of the engine. Connect the measuring instrument to battery plugs (see an accompanying illustration). Follow instructions of manufacturers of the device – at 15-second inclusion of loading tension of the battery should not fall below, than to value 9.6 B, otherwise the battery needs to be replaced.


At ambient temperatures below 0 °C the minimum admissible indication decreases up to 9.1 Century.

Replacement

 PERFORMANCE ORDER

1. Disconnect both wires from the battery.

The negative wire always has to be disconnected first of all and be connected in the last. If the stereosystem established on the car is equipped with a security code before disconnecting the battery make sure that you have the correct combination for introduction of the equipment to action!


2. Release fixture and remove a clamping level of fastening of the battery on the pallet (see an accompanying illustration).

3. Remove the battery from the pallet (see an accompanying illustration).


Special brackets with the handle are issued. Use of such bracket significantly simplifies the procedure of extraction of the battery from a motive compartment.


4. Remove the pallet and attentively examine it on existence of traces of corrosion.
5. In case of need remove a pallet support for the purpose of removal of corrosion products from under it and the corresponding protective metal working (use primers on a zinc basis).
6. When replacing track that the replaceable battery conformed according to the characteristics to requirements of your car.
7. Installation is made upside-down.