3.0 Maintenance Guide
9
Fluid level should be at 1/8” from the end of the dip stick (check with dip stick cap screwed in). Add
fluid if necessary but avoid overfilling as this could cause leakage when hot. Replace the rear panel
when finished.
The hydraulic fluid should be changed AT LEAST ONCE-A-YEAR or after every 1,000 hours of
operation. NOTE: Failure to change oil when needed can damage seals in the cylinders, pump, and
valves.
Empty the hydraulic tank and refill with 1 gallon of International Standards Organization Viscosity
Grade 100 (ISO VG 100) rust, oxidation, and foam inhibiting hydraulic fluid (Challenge part no.:
S-1991).
NOTE: NEVER use automatic transmission fluid or brake fluid as a substitute for the correct
hydraulic fluid.
3.2.1 Recommended Hydraulic Oils
Use one of the recommended oils or an ISO VG 100 Hydraulic Fluid
equivalent only. Oils other than the recommended type will cause seals and O-rings to deteriorate.
Unsafe operating conditions will result.
3.3 Lubrication
Switch power off and disconnect the power cord. Remove the top cover. Parts requiring oiling are
marked with red paint. See figures Figure 3 through Figure 9 starting on page 10 for oil and grease
locations. Figure 3 and Figure 4 require the knife and clamp be in the up position. Figure 28 through
32 require the knife and clamp be down. Wipe off any old or excess grease. Use any brand-name
type of grease or light oil to lubricate. Note: the lead screw may be lubricated with grease or oil. Oil
has a tendency to run off and must be lubricated more frequently; grease tends to collect paper dust
and must be cleaned off periodically.
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