OPERATION & MAINTENANCE MANUAL STE35SR
Maintenance of Hydraulic System
Hydraulic Oil Return Oil Filter Element - Replacement
After the engine is stopped, the parts are still in the high temperature state, so do not
immediately replace the oil filter element. The parts cannot be replaced until the temperature
drops.
Notice
If the machine is equipped with a hydraulic crushing hammer,
the hydraulic oil will deteriorate faster than normal bucket
work. See the item "maintenance cycle when using hydraulic
crushing hammer" for the replacement cycle.
The filter element of the return oil filter should be replaced
every 1000 hours after the first use and every 1,000 hours
after that.
1. Remove six fastening bolts (S=13) from flange assembly (1).
2. Remove flange assembly (1).
3. Unscrew the return oil filter element (2), then replace the new
return oil filter element.
4. Except for filter element (2), clean the removed parts with
clean diesel oil.
5. Install flange assembly (1) as is and tighten with bolts.
Hydraulic tank oil filter element - check/clean/replace
After the engine is stopped, all parts are still in the high temperature state, so do not
immediately clean the oil absorption filter. The parts cannot be replaced until the temperature
drops.
Oil may spout when the cap of the suction port is removed. Press the top button of the
breather valve to release pressure inside the tank before removing the cap.
Notice
Check and clean the oil filter element of the hydraulic oil tank after
the first use of 50 hours and 500 hours, and then check and clean it
every 500 hours. Replace every 2000 hours. This maintenance time
is halved when using the crushing hammer.
1. Remove six fastening bolts (S=13) from flange assembly (1).
2. Remove flange assembly (1).
3. Unscrew the oil filter element (3) from the oil tank (2).
4. Check whether there are metal particles and other impurities on
the oil filter element. If there are, please contact the dealer
immediately for diagnosis and maintenance. If not, clean the
removed filter element and other parts with clean diesel.
5. Load the cleaned oil filter element or the new oil filter element
into the filter seat in the oil tank.
6. Install flange assembly (1) as is and tighten with bolts.
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