Manual - Gravely pro-turn 460 diesel 992236 Operator's Manual

Change Hydraulic Fluid and Filter
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. Run the unit for a few minutes to warm
the hydraulic fluid, and then shut off the
engine, remove ignition key, and wait for
all moving parts to stop before servicing
unit.
2. Place container under oil filter to catch oil.
3. Remove the filter cover from the
transaxle. Remove and discard the o-ring
from the cover.
4. Remove the bottom oil fill vent port plug
from the transaxle to drain completely.
5. After the oil has drained from the unit,
replace the bottom oil fill vent port plug
and then remove the oil filter.
6. Clean the filter mounting surface and
then lubricate rubber gasket on new oil
filter with clean hydraulic oil.
7. Spin new oil filter onto filter housing until it
makes contact. Tighten oil filter another
3/4 turn.
8. Install the filter cover removed in step 3.
Tighten the mounting screws to 54 – 61
N•m (40 – 45 lb-ft).
9. Remove the top fill vent port plug and fill
with 15W-50 synthetic motor oil (Gravely
p/n 00057100) or equivalent until oil
reaches the bottom of the drain plug
(about 4475 mL (151 ounces) per
transaxle). Install the drain plug and
tighten to 22.5 N•m (16.7 lb-ft).
10. Remove the cap from the expansion tank.
11. 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.
12. Reinstall the expansion tank cap and then
purge the system. See Purging the
Hydraulic System on page 29.
13. Repeat steps 2 – 12 for the other
transaxle.
1
2
1. Oil Filter
2. Filter Cover/Drain Plug
3. O-Ring
Purging the Hydraulic System
WARNING: This adjustment
requires operating the engine.
Use extreme care to avoid
contact with moving parts and hot
surfaces. Be sure rear of unit is
well supported and secure before
starting engine.
NOTICE: Purge the system of air any time
the transaxle has been opened for
maintenance or when oil has been added to
the system.
1. Make sure the transaxles are filled to the
proper oil level.
2. With the unit up to and facing a wall, jack
up the unit so that both drive wheels are
off the ground.
3. Disengage the parking brake and put the
transaxle bypass valves in the neutral
position. See To Push The Unit on
page 23.
4. Start the engine and slowly move the
steering levers in forward and reverse
five or six times. The oil level will drop.
5. Stop the engine and move the transaxle
bypass valves to the drive position. See
To Push The Unit on page 23.
6. Start the engine and slowly move the
steering levers in forward and reverse
five or six times.
7. Stop the engine, check the hydraulic oil
level and add oil as needed.
EN - 29
3
Figure 16