MAINTENANCE 6. Use a hydrometer to check the specific gravity of each cell. Compare readings to the chart below. K. FAN AND A/C BELT WEAR & TENSION Inspect belt wear and tension on a new machine after the first 50 hours of operation. Then at every 250 hours of engine operation. NOTE Measure belt tension on longest span of belt. Ap- ply a 10 kgf (22 lbf) on the belts as indicated in Figure 4.33B, and measure the belt deflection. Compare to the following table: Use hydrometer according to its manufacturer’s instructions. 7. When disconnecting batteries, remove the negative(–) cable first. When connecting bat- teries, connect the negative(–) cable last. See Figure 4.33A. 4 8.
When the battery requires charging; a. Disconnect battery cables from terminals. b. Remove all cell caps. c. Check for proper electrolyte (acid) level. d. Connect charger leads to the proper battery terminals. CAUTION Make certain not to cross Positive and Negative terminals when con- necting charger. e. Stop charge if battery overheats. f. Periodically check the specific gravity of the batteries with a hydrometer. Stop charging batteries when 100% charged. FIGURE 4.33B Should the fan and/or AC compressor belts need adjustment, please refer to detailed instructions in 250 hour maintenance, item A, in this section.
NOTE Battery life can be shortened by overcharging and over discharging of the battery. Replace any battery that will not hold charge or is difficult to NOTE Be very careful when moving the alternator. Do not dam- age the stator coil section located beween the alternator’s front and rear housing. charge.
DISCONNECT NEGATIVE (-) CABLE FIRST RECONNECT LAST SK32004077 FIGURE 4.33A SK210(LC)/SK250(LC)–VI Dynamic Acera OM, 09/00 Rev.2 4-33 CHARGE % ATMOSPHERIC TEMPERATURE 20°C 0°C –10°C (68°F) (32°F) (14°F) 0°C (32°F) –10°C (14°F) 100% 90% 80% 75% 1.26 1.24 1.22 1.21 1.27 1.25 1.23 1.22 1.28 1.26 1.24 1.23 BELT DEFLECTION FAN BELT 10 mm ~ 15 mm (0.4"~ 0.6") AIR CONDITIONER 7 mm ~ 10 mm (0.3"~ 0.4") ALTERNATOR IDLER PULLEY CRANK PULLEY COMPRESSOR