10
CARE FOR HYDRAULIC SYSTEM
To keep the hydraulic system in working order,
there are a few steps needed to take place. If
synthetic oil were used we would suggest a full
synthetic oil such as
Mobil 1 15W50, Quaker
State Full Synthetic 5W50
, or a similar oil.
Oil viscosity is very important to transmission
life. For optimum performance the oil viscosity
should maintain a viscosity of 13 cSt [70 SUS]. The
minimum oil viscosity to prevent component wear
is 9 cSt [55 SUS]. These Viscosity requirements
are for an oil temperature of 110 degrees Celsius
[230 degrees Fahrenheit] Typically; standard
SEA 20W-50 multi-viscosity motor oils will meet
this requirement. If the operating temperature is
elevated then synthetic oil with greater viscosity
index, or more viscosity at elevated temperatures,
may be needed to meet viscosity requirements.
System Start-up: (purging air from system). Factory
Fills unit with SAE 20W-50 multiviscosity motor
oil. This will need to be checked when setting up
with instructions below.
At system start-up, several things need to be
accomplished to ensure a properly running system.
1.
Fill the BDU case and expansion level and
ensure they do not empty during the
following procedure.
2.
Start engine and increase throttle to at least
2/3 speed.
3.
Open bypass valve by depressing bypass
plunger and holding.
4.
Adjust control linkage such that
transmission control is stroking
full forward.
5.
Move and hold control in forward for
3 seconds; repeat two additional times.
6.
Close bypass valve be releasing
bypass plunger.
7.
With engine still at same speed,
repeat step 5.
8.
Move control to neutral.
9.
Check engine speed. Adjust to
recommended maximum engine speed.
10. Adjust neutral position.
11. Adjust forward control stop to recommended
axle speed.
12. Adjust reverse control stop to recommended
axle speed.
13. If axle speed is not achieved ensure linkage
allows proper movement of transmission
control.
14. If transmission control lever is rotating
fully but recommended axle speed is not
achieved, repeat start-up procedure.
15. Refill expansion tank oil to
recommended level.
