Gravely Pro-Turn 152 CARB Owner's/Operator's Manual page 25

The hydraulic fluid should be at the cold
fill line of the expansion tank.
Figure 8
Change Hydraulic Fluid and Filter
(Figure 9)
NOTE: 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. Place container under oil filter to catch
oil.
2. Remove the filter guard and oil filter from
the transaxle.
3. Remove the oil drain plug or fitting from
the inlet port and allow the transaxle to
drain completely.
4. Clean the filter mounting surface and
then lubricate rubber gasket on new oil
filter with clean hydraulic oil.
5. Spin new oil filter onto filter housing until
it makes contact. Tighten oil filter
another 3/4 turn.
6. Install the filter guards removed in
step 2. Tighten the mounting screws to
65 lbf-in (7.3 N•m).
7. 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
180 lbf-in (20.3 N•m).
8. Repeat steps 1 – 7 for the other
transaxle.
9. Follow the instructions in To Add
Hydraulic Fluid on page 24.
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1. Drain Plug
2. Oil Filter
3. Filter Guard
4. Mounting Hardware
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.
1. With the unit up to and facing a wall, jack
up the unit so that both drive wheels are
off the ground.
2. Disengage the parking brake and put the
transaxle bypass levers in the neutral
position. See Moving the Unit with the
Engine Off on page 21.
3. Start the engine and slowly move the
steering levers in forward and reverse
five or six times.
4. Stop the engine and put the transaxle
bypass levers in the drive position. See
Moving the Unit with the Engine Off on
page 21.
5. Start the engine and slowly move the
steering levers in forward and reverse
five or six times.
6. Stop the engine, check the oil level and
add oil as needed.
7. Repeat steps 2 – 6 until the transaxles
operate smoothly in forward and reverse
at normal speeds without excessive
noise.
EN - 25
4
Figure 9
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3