Changing Hydraulic Oil And Filter - Gehl RT175 Operator's Manual

5. If the hydraulic oil level is low, use the accessory
key (supplied with the ignition key) to unlock
and open the hydraulic tank cover (H, Fig. 99),
located on the top right of the machine next to
the top engine cover.
H
Fig. 99 – Hydraulic Oil Fill
6. Slowly remove the hydraulic oil fill cap (B).
Allow the pressure to escape before completely
removing the cap.
7. Add hydraulic fluid if required. See "Fluids/
Lubricants Types and Capacities" on page 31 for
proper hydraulic oil grade and type.
IMPORTANT:
Do not mix different types/grades of
hydraulic fluids.
Reinstall and tighten the oil fill cap. Close and
lock the hydraulic tank cover.

Changing Hydraulic Oil and Filter

NOTE:
The hydraulic oil filter can be changed
without changing the hydraulic oil or draining the
hydraulic reservoir.
Replace 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 16.
2. Wait until the engine has cooled. See
"Maintenance and Service Safety Practices" on
page 21.
Printed in U.S.A.
3. Open the engine cover according to "Engine
4. Position a waste oil collection container with a
IMPORTANT:
according to environmental laws or take to a recy-
B
cling center for proper disposal. DO NOT pour onto
the ground or down a drain.
5. Remove the hydraulic reservoir drain plug
NOTE:
accessed from underneath the machine at the right
rear corner.
6. Remove the hydraulic oil return filter (D, Fig.
7. Apply a coating of clean oil on the new oil filter
8. Re-install and tighten the drain plug.
9. Using the key, unlock and open the hydraulic
113
Access" on page 103.
capacity of at least 53 L (14 gals.) underneath
the hydraulic oil reservoir.
Always dispose of hydraulic fluids
untand allow the oil to drain completely.
The hydraulic reservoir drain plug is
100), using a filter wrench of necessary.
Carefully clean the filter head mounting surface
with a clean cloth.
Fig. 100 – Hydraulic Oil Return Filter
gasket. Install the filter and tighten 3/4 rotation
past the point where the gasket contacts the filter
head.
tank cover (H, Fig. 99), located on the top right
of the machine next to the top engine cover.
Maintenance
D
918468/EP0313