Gravely Pro-Walk 36 Operator's Manual page 23

See Figure 22.
4. Remove filter guard and oil filter from
transaxle.
5. Remove the vent plug from the inlet port
and allow the transaxle to drain
completely.
1
2
1. Vent Plug
2. Oil Filter
3. Filter Guard
Figure 22
6. Wipe filter-mounting surface clean.
7. Lubricate rubber gasket on new oil filter
with clean hydraulic oil.
8. Spin filter onto filter housing until it makes
contact, and then turn filter 3/4 turn to
tighten.
9. Reinstall filter guard and torque to 7.3
N•m (65 lb-in). DO NOT overtighten.
10. Add 15W-50 synthetic motor oil (Gravely
p/n 00057100) or equivalent until oil
appears at the bottom of the vent port
(approximately 1893 mL (64 fl. ounces)
per transaxle).
11. Reinstall the vent plug and tighten to
20.3 N•m (180 lb-in).
12. Add hydraulic oil to expansion tank until
oil reaches cold fill indicator line. See
Figure 21.
13. Repeat steps 3 – 12 for other transaxle.
14. Purge hydraulic system. See Purge
Hydraulic System on page 21.
Purge Hydraulic System
Purge air from hydraulic system after draining
oil or changing the filter.
1. Park unit facing a wall or chock wheels.
2. Release parking brake.
3. Support unit so drive wheels are off the
ground.
4. Bypass transaxles. See Move Unit
Manually on page 17.
5. Start the engine.
6. Slowly twist drive control grip forward and
backward 5 or 6 times.
7. Stop engine.
8. Return transaxle bypass levers to
operating position. See Move Unit
3
Manually on page 17.
9. Start the engine.
10. Slowly twist drive control grip forward and
backward 5 or 6 times.
11. Stop engine, lower unit to ground and
check oil level. Add oil if needed.
12. Repeat steps 1 – 11 until transaxles
operate smoothly in forward and reverse
at normal speed without excessive noise.
EN - 21
WARNING: AVOID INJURY.
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.