SERVICE LEVEL MAINTENANCE
31
Hydraulic System
(See Figure 19)
DANGER
TO AVOID SERIOUS INJURY,
Never Service Any Part of the Hydraulic
System With the Engine and Pump
Operating. High Hydraulic Pressure
and High Oil Temperatures Can Cause
Serious Injury Or Death.
Do Not Use Your Fingers or Hands To Check For
Hydraulic Leaks. High Pressure Can Puncture The
Skin and Force Oil Into the Body. This Can Cause
Severe Injury or Death.
Be Aware of High Hydraulic Oil Temperatures.
Serious Burns and Injuries Are Possible.
INSPECTING HYDRAULIC HOSES AND FITTINGS
Do not attempt to inspect the hydraulic hoses with the
engine running, the spinner motors operating, or the
conveyor drive motor operating.
Check the condition of the hydraulic hoses. The hoses
have a protective covering to control leakage in the
event of a hose breaking. Leaks and worn hoses should
be fixed or replaced before the machine is put into
service. The hydraulic system has pipe thread fittings
on some of the components. If disassembled, reseal
the pipe thread fitting with Teflon
®
tape or pipe dope.
HYDRAULIC FLUID AND HYDRAULIC FILTER
REPLACEMENT SCHEDULE
50
Hours
or 6
Months
150
Hours
or 18
Months
250
Hours
or 30
Months
350
Hours
or 42
Months
Hydraulic
Filter
Replace Replace
Replace Replace
Hydraulic
Fluid
Change
Change
HYDRAULIC FLUID
The hydraulic system uses ISO 68
(Mobil DTE-26
®
or equivalent) hydraulic
fluid. The fluid reservoir holds 34 liters
(9 gallons). Fluid level can be checked
by using the dipstick that is attached to
the filler cap. Do not operate the 1530 if the hydraulic fluid
temperature is under -7° Celsius (20° F). The viscosity
of the fluid will be too thick to flow properly to the pump.
Damage to the pump will occur.
Do not operate the
1530 if the air temperature is above 29° C (85° F). Fluid
may over heat causing poor performance.
WARNING
CAUTION
TO AVOID DAMAGE TO THE HYDRAULIC PUMP,
Do Not Start the 1530 Engine If the Hydraulic Fluid
Temperature Is Under -7 C (20 F).
If operation is needed at temperatures over 29° Celsius
(85° F), the entire hydraulic system of the should be
drained and the hydraulic fluid replaced with ISO 100
(Mobil DTE-27
®
or equivalent). The ISO 100 will provide
an operational range of 10° Celsius (50° F) up to 43°
Celsius (110° F).
Refer to the “Hydraulic Fluid and Filter Service Schedule
Table” for total fluid replacement schedules.
HYDRAULIC FLUID FILTER ASSEMBLY
The hydraulic fluid filter assembly is located on the
right side of the top dresser, under the frame. The filter
canister is a 10 micron “absolute” replaceable spin-on
type.
The filter housing is equipped with a pressure gauge
(visible through a hole in the frame, just above the right
hand tire) to determine the flow levels of fluid through
filter. During operation, the needle should remain in
the green range, indicating 0 PSI to 17 PSI (0 to 1.2
bar) of back pressure. If the filter element is in need
of servicing or replacement, the needle will start to go
into the yellow range, 17 PSI to 20 PSI (1.2 to 1.4 bar),
indicating back pressure in the filter has increased. The
filter canister will need replacing when the needle will
goes into the red range, indicating back pressure of 20
PSI to 30 PSI (1.4 to 2.1 bar).
Before operating the 1530 top dresser, allow a warm–
up period for the hydraulic fluid.
Run the pump until the
needle on the flow meter reads in the green area.
Cold
hydraulic oil will cause the needle to read in the red
range, during the warm–up period. If the needle does
not move into the green area after warm-up, the filter
element needs to be replaced.
ISO 68
34 Liters (9 Gal)
SV85804-01
-15° C
(5° F) -7° C
(20° F)
43° C
(110° F)
29° C
(85° F)
RECOMMENDED MAXIMUM HYDRAULIC FLUID
AIR TEMPERATURE OPERATING RANGE
2° C
(35° F)
ISO 68
ISO 46
18° C
(65° F)
ISO 100
SV85804-02
