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Mid-Mount Ascendant Aerial Tower / 5-7
MAINTENANCE
5-3.2 Hydraulic Oil Recommendations
Hydraulic Oil Recommendations, shows six grades of hydraulic oil recommendations for aerial devices. Each grade
has a minimum start-up and normal operating range. Check the oil tag next to the reservoir fill cap for the initial fill
grade. Your normal start-up and operating temperature should most closely match the initial fill oil chosen for your
unit.
The minimum start-up column shows an oil temperature where the viscosity is at its highest value (thickest point).
This is the minimum operating temperature authorized by the pump and valve manufacturers for the given grade of
oil. Start-up below this temperature should be infrequent and carefully executed.
The operating range listed provides the optimum oil viscosity for the hydraulic system. Operation below this range
may result in slower aerial operation, while operating above this range will reduce system efficiency and may
increase component wear.
Table 5-2: Hydraulic Oil Recommendations
NOTE: • The above minimum start-up is based on a viscosity of 4000 SUS. The operating range is
based on a viscosity range from 1000-80 SUS. When choosing an alternate oil, the
temperature values in the above chart will change. Ask your oil supplier what temperature the
oil will be for 4000, 1000, and 80 SUS viscosity.
• Mobil Oil is shown in
Table 5-2,
but other high-quality comparable oils may be substituted.
Substitute oils should have multi-grade viscosity characteristics, with low-temperature flow
properties and high anti-wear protection.
• We recommend taking an initial sample of hydraulic oil and having it analyzed to serve as a
baseline for future oil analysis results.
• Your Pierce aerial was shipped with a hydraulic oil cleanliness level of 18/15/13, per the latest
ISO standard 4406. Any changes of, or additions to, the aerial hydraulic oil should be with the
appropriate type - filtered to the same cleanliness level. Unfiltered oil may have an affect on
the life or operation of some components.
5-3.3 Hydraulic Oil Filter Recommendations
Hydraulic filters are used in the aerial hydraulic system of your Pierce apparatus
(Table 5-3)
. Used oil and filters
should be carefully collected and disposed of properly as required by law.
Table 5-3: Hydraulic Oil Filters
Oil
ISO
Grade
Minimum Start-Up
Temperature Operating Range
Mobil DTE 10 Excel 100 44 ° F 81° to 201°F
Mobil DTE 10 Excel 68 27
°
F 65° to 184°F
Mobil DTE 10 Excel 46 14
°
F 49° to 167°F
Mobil DTE 10 Excel 32 3 ° F 37° to 148°F
Mobil DTE 10 Excel 22 -8 ° F 23° to 127°F
Mobil DTE 10 Excel 15 -24
°
F 7° to 107°F
Item Description Pierce Part Number
Pierce Return Filter Element
3155646