44
4. MAINTENANCE
4.4 50 HOUR SERVICE
4.4G Hydraulic System
Change the hydraulic oil filter after the
first 50 hours of operation and every 150
hours thereafter. Check the oil level daily
(T90120).
Replace the hydraulic oil and suction
screen element every 900 hours. See sec-
tion 4.6 for 900 hour service information.
Replace the hydraulic oil after major
repairs are made, such as gear pump or
motor failure, or if the oil has been contam-
inated by water or other contaminate.
To change the filter:
1. Shut off the engine.
2. Remove the filter using a filter wrench.
3. Lubricate the new filter seal with system
oil (C2202). Install to the filter head.
Hand tighten 3/4 to 1 1/4 turns after the
seal has contacted the filter head. Use
only Thomas approved filters.
4. Start the engine and check for leaks
around the filter seal.
5. Stop the engine and check the oil level.
Replenish with 10W30 minimum API
classification CF motor oil.
C2202
Lubricate
T90120
Hydraulic Oil Filter