OREC SNOW RHINO Owner's Manual page 24

5.1.2 Inspection, Replacement, and Lubrication of HST oil
HST oil reservoir
Upper
Lower
Drain plug
Oil pan
How to determine the HST oil by sight
Appearance
Clear, no color change
Clear, there are small black spots.
The color has changed to milky white.
The color has changed to black.
Note
・ This product has a HST unit on each side of the transmission. Please change the oil for both units.
・ Idle the engine for one minute to remove air bubbles after changing HST oil.
・ Drive the machine back and forth, so that the HST unit is operating and removing air bubbles. If
the air bubbles remain in the HST unit, the machine will vibrate and will not move smoothly.
Repeat this step until the machine moves smoothly.
・ The HST oil level may change after the air bubbles are gone. Always keep the oil at the optimal
level, as you can check it with the inspection line on the oil reservoir about every 30 min.
・ Although HST oil is clean at first, its quality deteriorates with age and it can become detrimental to
smooth operations if not replaced r egularly. To keep working safely and comfortably, please
change HST oil regularly. Not only should you change the oil, but also do flash washing on the
inside of the HST with washing oil several times beforehand, because the HST oil may be mixed
with aged oil, sediment, or water in the unit and oil reservoir.
Inspection...
1.Remove 4 Bolts shown in the picture and take off the cover.
Bolts
2.Visually check the HST oil level in the HST oil reservoir and see If it is
between the upper and lower markers.
Lubrication...
1. If it is not between the upper and lower levels of oil, open the oil lid and
add HST oil to the upper limit.
2. Refer to the chart below. Change oil if it gets dirty or contaminated
with water.
Replacement...
1. Place the oil drain pan under the HST unit.
2. Loosen the oil drain bolt at the bottom of the HST unit with a 22mm
wrench. Then drain the oil.
3. Replace the drain plug tightly.
4.Open the lid and refill slowly with 0.52qts. (0.5 liters) of HST oil.
5.Reattach the lid and put the covers back.
Odor
Normal
Normal
Normal
Unpleasant,
noxious
Condition
Good
Mixed with foreign substance
Contaminated with water
Oxidized and aging
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Measures
Continue using
Filter oil
Change oil
Change oil