Periodic Inspection
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3. Replacing HST filter and
hydraulic oil
HST filter and HST hydraulic oil should be replaced at
the same time.
Replacing HST filter and hydraulic oil
1- Remove the drain plug at the bottom of hydraulic oil
tank to drain the old oil.
(Refer to the diagram for hydraulic oil tank above)
2- Turn the HST filter element to the left to remove it.
3- Apply new oil to the rubber sealing ring of the new
HST filter, and then mount it in the original position.
4- Remove the cover of hydraulic oil tank to add oil to
the specified level.
(Refer to the diagram for hydraulic oil tank above)
5- After replacement, perform idle running of the engine
for a few minutes, stop it and check the oil level with
a dipstick.
[Precaution]
Be sure to check oil leakage on the installation
surface of the filter.
Use the genuine YANMAR HST filter only.
Wipe off oil on the machine body.
4. Checking and replacing cooling
water
Do not open the radiator cap during
operation of the engine or immediately
after the engine stops. Otherwise, hot
water may spill out and cause burning.
<Checking>
Check cooling water level in the sub tank, which should
falls between “FULL” and “LOW”. Add pure water in the
sub tank through the inlet port, and check water
leakage at the same time.
<Replacing>
1- Remove the cover of engine room cover and the
drain pin to completely drain water in the radiator.
2- Remove the cover of main radiator, and wash out
dust and rust inside with clean water.
Before adding the detergent mixed with radiator
cleaning fluid, drain water inside after 15 minutes
idle running of the engine to make it easier to
clean the radiator.
Replacing
interval
Every 400 hours
Sub tank
Upper
Lower
Drain pin
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