MAINTENANCE
2-1
Page 2
TESCO EQUIPMENT LLC
ML50-30 MAINTENANCE LIFT
CAUTION
AFTER PERFORMING MAINTENANCE ON THE HI-LIFT, DISPOSE OF ANY
ENVIRONMENTALLY SENSITIVE MATERIALS ACCORDING TO LOCAL ENVIRONMENTAL
REGULATIONS. EXAMPLES OF SUCH MATERIALS INCLUDE: BATTERIES, RUBBER BELTS,
LUBRICANTS (MOTOR OILS AND GREASE), AND HYDRAULIC OIL.
2. HYDRAULIC OIL RECOMMENDATIONS
The hydraulic oil reservoir is factory filled with ISO 15 hydraulic oil at the time of shipping.
SEVERE CLIMATE OPERATION
• If platform lowering becomes too slow in severe cold weather operations, a lower viscosity fluid
may be substituted.
3. CHECKING HYDRAULIC OIL LEVEL
Maintaining proper hydraulic oil level is important. DO NOT overfill the hydraulic oil reservoir. Hydraulic
oil expands when heated.
1. The hydraulic oil reservoir is equipped with a sight gauge. Ensure that the Hi-Lift is fully lowered
and stabilizers must be in stowed position when checking hydraulic oil level using the sight
gauge. The oil level should be near the “High” mark and must not be below the “Low” mark.
Replace return filter 6 mos.
Check that all wiring terminals are secure. 6 mos.
Replace corrosion inhibitor in main electrical control box. Annually
Drain hydraulic reservoir and clean. Annually
Check hoist rollers for wear X No more than
1/4” wear
OIL OPERATING TEMPERATURE RANGE
RECOMMENDED
GRADE OF
HYDRAULIC FLUID
CLIMATE
AMBIENT
TEMPERATURE
MAXIMUM BULK OIL
(RESERVOIR
TEMP.)
ISO 32 Hot Above 60° F (15° C) 180° F (82° C)
ISO 15 Moderate 20° F (-7° C) -100° F (38° C) 165° F (74° C)
ISO 5 Cold Below 32° F (0° C) 150° F (60° C)
PERIODIC MAINTENANCE CHART
PROCEDURE
PERIOD (HOURS)
8 250 OTHER
Mar. 09
Property of American Airlines
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