IMT 3820 User Manual

99903514:TELESCOPIC CRANE:
2-6 SECTION 2: MAINTENANCE
2-5: HYDRAULIC SYSTEM
2-5-1: HYDRAULIC OIL SPECIFICATIONS
The hydraulic oil is the power transmission
medium, system lubricant, and coolant. Under
normal operation conditions, the hydraulic oil
must meet the following specifications:
 High quality, antiwear hydraulic oil which
meets ISO VG 32.
 Viscosity specifications for hydraulic oil:
AMBIENT TEMPERATURE RANGE 0-90° BELOW 0° ABOVE 90°
Minimum Pour Point, °F -40° -40° -10°
Maximum Viscosity, SSU @ 0°F 5000 1500 —-
Minimum Viscosity, SSU @ 100°F 140-195 80-90 200-335
Minimum Viscosity, SSU @ 210°F 48 39 49
Minimum Viscosity Index 139 139 95
ISO VG Grade 32 15 46
Mobil Oils (Reference) DTE 13M DTE 11M DTE 25
 Viscosity characteristics including:
1. 80 to 180 SSU optimum at system operating
pressure.
2. 60 SSU minimum at system operating
temperature.
3. 7500 SSU maximum at starting tempera-
ture.
4. 90 Viscosity Index (VI) minimum.
 Additives including anti-foam inhibitors, anti-
oxidant inhibitors, rust resistance, and anti-wear
must be part of the oil.
When the crane leaves the factory, it is filled
with an ISO VG32, low pour, anti-wear hydraulic
oil.
2-5-2: LOW TEMPERATURE HYDRAULIC
OIL SPECIFICATIONS
In conditions below -25°F, use gear oil which
meets MIL-L-2105C Grade 75W (GO-75).
Fluids which contain halogenated hydrocarbons,
nitro hydrocarbons, and phosphate ester hy-
draulic fluids may not be compatible with hy-
draulic system seals and wear bands.
2-5-3: HYDRAULIC FLUID LEVEL
Check the hydraulic oil level daily using the
following procedure:
1. Remove the hydraulic oil reservoir cap.
2. Visually check the oil level. Oil should be
visible in the fill screen area above the bottom of
the reservoir.
3. If the hydraulic oil is low, fill until the oil is
visible in the screen area.
SAE Designation Temperature Range
5W-20 -10 to 180°F (-23 to 82°C)
10W +10 to 180°F (-12 to 82°C)
10W-30 +10 to 210°F (-12 to 99°C)
Figure B-8: SAE Designation for
Hydraulic Oil
Figure B-9: Hydraulic Fluid Specifications
20030115

IMT 3820 Specifications

General

Brand	IMT
Model	3820
Category	Construction Equipment
Language	English