Maintenance
Hydraulic System
Maintenance 60HDdoc102619 5-13
5
1. Raise the saw head to access the battery box.
IMPORTANT: Be careful not to overcharge the battery, especially
when using a high-rate or “boost” charger (40 amps or higher). These
are intended to quickly charge a good battery that is discharged. They
are not intended for unattended or long-term charging.
2. After the battery is completely recharged, remove the negative charger/jumper cable from ground.
3. Remove the positive charger/jumper cable from the battery.
4. Replace the battery box lid and replace the flat washers and nuts.
5.12 Hydraulic System
1. Check the hydraulic fluid level every fifty hours of operation. Add fluid as necessary. The level in the
hydraulic pump should be 3/4" (19mm) from the top with all cylinders collapsed.
If humidity is a problem or the mill is used outside in humid weather, drain and replace two quarts
(.95 liters) of fluid every six months. This will drain any accumulated water and help prevent pump
failure due to water ingestion. It also will prevent excessive fluid wear and allow the fluid to maintain
its hot end performance. If humidity is not a problem, drain and replace one gallon (3.8 liters) of fluid
every year to prevent fluid wear.
See Figure 5-5. If you are operating in temperatures -20° to 100° F (-29° to 38° C), use an
all-weather hydraulic fluid such as Exxon Univis J26. For alternate fluids and/or other temperature
ranges, refer to the chart below. Operating above the recommended temperature range of a fluid
could result in excessive pump wear. Operating below the recommended temperature range could
result in reduced hydraulic cylinder speed.
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