Jacobsen G-Plex III, Parts And Maintenance Manual

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GB-17
JACOBSEN G-PLEX III Series: DN & DP
MAINTENANCE AND PARTS MANUAL
GB
5 LUBRICATION AND MAINTENANCE
5.13 HYDRAULIC OIL
The hydraulic oil MUST be drained and replaced
when:
• 250 hours of operation occurs.
• Yearly.
• After a major component failure.
• If you notice the presence of water or foam
in the oil.
• A rancid odor is detected (indicating
excessive heat).
Always replace the hydraulic filters when changing
oil.
To drain the hydraulic oil, remove the hydraulic oil
filters.
Once the hydraulic oil is replaced, the air must be
purged from the system. Operate the unit for five
minutes to stabilize the oil level.
Once the air is purged and the oil level is stabilized,
fill the tank to its proper level.
The hydraulic fluid reservoir is filled at the factory
with biodegradable hydraulic oil.
5.14 BRAKES
If desired, mineral oil may be used in place of the
biodegradable hydraulic oil.
NOTE: Use of mineral oil will compromise all
biodegradable properties of the biodegradable
hydraulic oil.
When changing to mineral oil, drain the reservoir and
replace the hydraulic oil filters. The system does not
have to be flushed out when changing over. As a
mineral oil alternative to the biodegradable hydraulic
oil, a straight-viscosity ISO 68 type fluid is
recommended for higher temperature environment.
Place the front axle on axle stands and remove the
front wheels. Inspect the Discs and pads for wear
and replace if necessary. Remove all debris from
around the brake assemby and ensure the caliper is
free to float
1
Figure. 5.14.1
1. Caliper