MAINTENANCE / STORAGE
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 multi viscosity 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.
15
TURF RAKE
