Cooling System - Gravely Pro-Master 252 Owner's/Operator's Manual

HYDRAULIC OIL SYSTEM
WARNING: HYDRAULIC FLUID
can result in severe burns. Fluid in
hydraulic system can penetrate
skin and result in serious injury or
death.
Be sure to stop the engine before
doing any work on hydraulic parts.
Keep body and hands away from
pin holes or nozzles which expel
hydraulic fluid when under
pressure. Use paper or cardboard,
not hands, to search for leaks.
Ensure all hydraulic fluid
connections are tight and all
hydraulic hoses and lines are in
good condition before applying
pressure to system.
FOREIGN FLUID INJECTED
INTO BODY can result in
gangrene. Fluid must be surgically
removed within a few hours by a
doctor familiar with this form of
injury.
Checking Hydraulic Oil Level
Operating
Range
1. Start the unit and run it to operating
temperature (about 10 minutes).
2. Cycle the control levers forward and
backward two or three times.
3. For units equipped with a hydraulic deck
lift, raise and lower the deck completely
two or three times.
4. Shut off engine. Engage parking brake.
Remove the ignition key.
5. Place unit in the service position (see
Service Position on page 22).
6. Remove any dirt that may be around the
cap/dipstick on the hydraulic reservoir.
7. Remove cap/dipstick.
8. Check hydraulic oil level mark on
cap/dipstick.
9. Add Mobil 1 Extended Performance
15W50 or equivalent as needed
(p/n 00057100). Do not overfill.
Changing Hydraulic Oil and Filter
NOTE: Change the hydraulic oil filter and
hydraulic oil every 400 hours. Use Mobil 1
Extended Performance 15W50 Synthetic Oil
or equivalent for best component life
(p/n 00057100).
NOTE: When changing the oil, only about
1.5 quarts (1.4 liters) will drain. The rest of
the oil will remain in the pumps and motors.
1. Clean around dipstick cap and dipstick.
Remove dipstick.
2. Place container under oil filter to catch
oil.
3. Remove oil filter.
4. Allow tank to drain.
5. Lubricate rubber gasket on new oil filter
with clean hydraulic oil.
6. Spin new oil filter onto filter housing until
it makes contact. Tighten oil filter
another half turn.
7. Add new oil to the oil tank. It will take
about 1.5 quarts (1.4 liters). Use Mobil 1
Extended Performance 15W50
Synthetic Oil or equivalent for best pump
and wheel motor life.
8. Check hydraulic oil level.
9. Properly dispose of waste oil.

COOLING SYSTEM

(992215, 216)
Checking Coolant Level
FULL
Mark
1
1. Operating Range
2. Full
3. Low
marks with engine cold.
GB - 33
WARNING: To avoid personal
injury DO NOT remove radiator
cap when engine is hot. Check
coolant level at coolant reservoir,
not at radiator.
2
3
Check coolant
level when
engine is cold.
Check coolant
level at overflow
reservoir.
1.Place unit in
the service
position (see
Service
Position on
page 22).
2.Check
coolant
reservoir.
Coolant should
be between the
low and full