Maintenance
Printed in U.S.A. 139 50940411/G0219
Changing Hydraulic Oil and Filter
NOTE: The hydraulic oil filter can be changed
without changing the hydraulic oil or draining the
hydraulic reservoir.
Change the hydraulic oil filter after the first 50
hours, and after 500 hours or 1 year of use
thereafter.
Change the hydraulic oil if it becomes
contaminated, after major repairs, and after 500
hours or 1 year of use.
1. Perform the “Mandatory Safety Shutdown Pro-
cedure” on page 20.
2. Wait until the engine has cooled. See
“Maintenance and Service Safety Practices” on
page 25.
3. Open the engine cover according to “Engine
Access” on page 126.
4. Position a waste oil collection container with a
capacity of at least 83.5 L (22 gals.) underneath
the hydraulic oil reservoir.
NOTE:
The hydraulic reservoir drain plug is
accessed from underneath the machine at the right
rear corner.
5. Remove the hydraulic reservoir drain plug and
allow the oil to drain completely.
IMPORTANT:
Always dispose of hydraulic fluids
according to environmental laws or take to a recy-
cling center for proper disposal. DO NOT pour onto
the ground or down a drain.
6. Remove the hydraulic oil return filter (D, Fig.
145), using a filter wrench of necessary.
Carefully clean the filter head mounting surface
with a clean cloth.
7. Apply a coating of clean oil on the new oil filter
gasket. Install the filter and tighten 3/4 rotation
past the point where the gasket contacts the filter
head.
8. Re-install and tighten the drain plug.
9. Using the key, unlock and open the hydraulic
tank cover (H, Fig. 144), located on the top right
of the machine next to the top engine cover.
D
Fig. 145 – Hydraulic Oil Return Filter
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