Case 120 - SAFETY PRECAUTIONS; General Safety Guidelines

SCHEDULED PREVENTIVE MAINTENANCE
MODEL 12 0 CRAWLER
HYDRAULIC OIL RECOMMENDATIONS
Drott DHF Fluid is recommended for year-around
use in the hydraulic system; or as alternate, use oils
listed below:
SYSTEM
OIL WEIGHT OPERATING TEMPERATURE
SAE 20-20W
50° to 210° F (10° to 99° C)
SAE 10W o
0
to 180° F (-18° to 82° C)
SAE 5W or 5W-20
Arctic Conditions
Viscosity: The viscosity of the oil at starting should
not exceed 4000 SSU or drop below 60 SSU for
sustained high temperature operation. The optimum
operating conditions are between 80 SSU and 180
SSU. The viscosity index should not be less than 90
(for this service).
Arctic Conditions: The use of an auxiliary heater, a
warm-up period avoiding high
speed operation of
hydraulic components until the system is warm, and
the
use of SAE 5W or SAE 5W-20 oils may be
necessary, provided the viscosity requirements for
sustained high temperature operation are not ~
exceeded at maximum operation temperatures. See
paragraph on Viscosity above.
COMPONENT CAPACITIES
Item
Lubricant/Fluid
Capacity
Engine Crankcase
See Enlline Manufacturer's Manual
38 qts. (36L)
+ 2/w filter
Engine Cooling System
1
/2 ethylene glycol base anti-freeze, 1 /2 water
30 Gal. (115L)
Fuel Tank
Diesel Fuel
182 Gal. (690L)
Track
Drive Transmission
SAE 80-90 Gearlube
Pump Drive Transmission
Swinll. Gearbox
6 qts. (5.6L)
Col'nplete Hydraulic
Drott DHF or alternate (see Hydraulic
240 Gal. (908L)
System
Oil Recommendations above)
Hydraulic
108 Gal. (400L)
Reservoir
Turntable
Open
Spray-on open gear lubricant such as !\Jlobiltac E,
-
Gear Texaco Crater Compound or equivalent.
Pressure grease
Multi-purpose lithium base
-
fittings EP No. 2
HYDRAULIC SYSTEM OPERATING PRESSURES
VALVE/CIRCUIT PRESSURE SETTING
VALVE/CIRCUIT PRESSURE SETTING
Main Reliefs
3000-3200
psi
Track Drive Port Reliefs
3400
psi (23 440 kPa)
(20 685-22 060 kPa)
Hoist Up Port Relief
3400 psi (23 440 kPa)
Hoist Down Port Relief
1250 psi (8620 kPa)
Crowd Port Reliefs
3400
psi (23 440 kPa)
Tool Port Reliefs
3400
psi (23 440 kPa)
Power Sensing Reliefs
2500
psi (17 200 kPa)
Swing Cushion Reliefs
1950
psi (13 450 kPa)
Pilot Systern Relief
750 psi (5175
kPa)
Counterweight Sys. Relief
2500
psi (17 200 kPa)
Auxiliary Sys. Relief
500
psi (3440 kPa)
10