CHECK HYDRAULIC SYSTEM
Check Hydraulic Oil Level
See Figure 16.
1. Place unit in service position. See
Service
Position
on page 17.
2. Check oil level in expansion tanks. Oil
should reach the cold fill indicator mark.
IMPORTANT:
Engine should be cold when
checking initial oil level.
Figure 16
Add Hydraulic Oil
1. Place unit in service position. See
Service
Position
on page 17.
2. Remove hydraulic oil expansion tank caps.
3. Fill expansion tanks with 15W-50 synthetic
motor oil (or equivalent) until oil reaches the
cold fill indicator mark. (See Figure 16.)
4. Reinstall expansion tank caps.
Change Hydraulic Oil and Filter
1. Operate unit for a few minutes to warm
hydraulic oil.
2. Stop engine, remove key and wait for all
moving parts to stop and for hot parts to
cool.
3. Position container under oil filter to catch
used oil.
4. Remove hardware retaining transaxle
skid plate and remove skid plate. (See
Figure 35.)
5. Remove filter cover and O-ring from
transaxle. Retain cover; discard O-ring. (See
Figure 17.)
6. After oil has drained, remove oil filter and
discard.
7. Wipe filter-mounting surface clean.
8. Lubricate rubber gasket on new oil filter with
clean hydraulic oil.
9. Spin filter onto filter housing until it makes
contact, and then turn filter 3/4 turn to
tighten.
10. Reinstall filter cover.
11. Remove the vent/fill plug and add 15W-50
synthetic motor oil until oil appears at the
bottom of the fill port [4475 mL (151 fl.oz)
per transaxle].
12. Reinstall the vent/fill plug and torque to
22.6
N•m
(16.7 lb-ft).
13. Add hydraulic oil to expansion tank until oil
reaches cold fill indicator mark. See
, step 4.
14. Repeat steps 3 – 13 for other transaxle.
15. Purge hydraulic system
Figure 17
Purge Hydraulic System
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.
Purge air from hydraulic system after draining oil or
changing the filter.
1. Support unit so tracks are not touching the
ground.
2. Release parking brake.
3. Bypass transaxles. See
Move Unit Manually
on page 15.
4. Start the engine and slowly move steering
joystick forward and backward 5 or 6 times.
5. Stop engine.
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