Gravely Pro-Stance 36 CARB Owner's/Operator's Manual page 25

HYDRAULIC FLUID
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.
Check Hydraulic Fluid Level
(Figure 11)
Check the system with the unit cold and
parked on a flat, level surface.
Run the unit for one minute and recheck the
levels.
Add Hydraulic Fluid
(Figure 11)
1. Remove cap from expansion tank.
2. Fill the expansion tank with 15W-50
synthetic motor oil (Gravely p/n
00057100) or equivalent until oil level
reaches the cold fill line on the tank.
3. Install the expansion tank cap and then
purge the system. See Purging the
Hydraulic System on page 26.
Change Hydraulic Fluid and Filter
(Figure 12)
NOTICE: Change hydraulic fluid and filter
after the first 75 hours of operation and then
every 400 hours. Use 15W-50 synthetic
motor oil (Gravely p/n 00057100) or
equivalent.
1. Lift and properly support rear of unit and
remove wheel.
2. Place container under oil filter to catch
oil.
3. Remove filter guard and oil filter from
transaxle.
4. Remove oil drain plug or fitting from inlet
port and allow transaxle to drain
completely.
5. Clean filter mounting surface and then
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 3/4 turn.
7. Install filter guards removed in step 3.
Tighten mounting screws to 5.4 lbf-ft.
(.61 N•m).
8. Loosen, but do not remove purge plug.
NOTICE: Loosening the purge plug when
adding hydraulic fluid helps air escape and
aids in the purging process.
9. Fill with 15W-50 synthetic motor oil
(Gravely p/n 00057100) or equivalent
until oil appears at the bottom of the
drain plug (about 2 quarts per transaxle).
Install the drain plug and tighten to 15
lbf-ft (20.3 N•m).
10. Tighten purge plug.
11. Repeat steps 1 – 10 for the other
transaxle.
12. Follow the instructions in Add Hydraulic
Fluid on page 25.
EN - 25