3-2
F-459-R1
HYDRAULIC OIL, MOTORS, PUMPS AND CYLINDERS
1.
Lower the mast to the floor, then tilt it back
completely.
2. Turn the key switch to OFF, remove the hydraulic tank
access cover.
3.
Remove the dipstick, holding the dipstick tip level,
check the oil level. If the oil level is at
the FULL line or between the FULL
and ADD lines, the level is correct and
no oil is needed. If the oil is at or below
the ADD line, you will need to add oil to
bring it up to the FULL line (maximum).
4.
Add hydraulic oil as needed. See
page 1-7 for hydraulic oil
specifications.
5.
If the fluid appears very dirty or dark in
color, check the truck’s maintenance
log for the last fluid and filter change,
and change accordingly.
6.
Install dipstick, making sure it is
seated.
7.
Install the hydraulic access cover.
Changing Hydraulic Oil
1.
Park the truck on a level, designated service area.
2.
Block the front wheels.
3.
Perform Lock Out/Tag Out procedure.
4.
Set the key to OFF, remove the key from the key
switch and place in a secure area.
5.
Disconnect the battery.
6.
Remove the hydraulic access cover.
7.
Open the fill/dipstick cap.
8. The hydraulic reservoir drain plug is located in the
right side of the truck, as shown in figure 3-1 photo.
9.
Slide a flat collection pan, (minimum 10 gallons - 40
liters) under the drain plug, then remove the plug.
10. Change the hydraulic filter. See “Change the
Hydraulic Oil Filter”.
11. Clean the magnetic trap on the drain plug of any
contaminants. When the tank is empty, clean and
reinstall the drain plug.
12. Add hydraulic oil. See page 1-12 for recommended
lubricants. DO NOT overfill.
13. Replace the fill/cap, turn clockwise and make sure it
is tightened securely.
14. Make sure the drain plug is tight enough to prevent
oil leaks, but do not over tighten.
15. Run lift to check for leaks.
16. With the lift OFF and the forks down, check the oil
level on the dipstick and add oil accordingly.
Figure 3-1: Hydraulic Tank Drain
Change the Hydraulic Oil Filter
CAUTION
1.
Park the truck on a level, designated service area
and block the wheels.
2.
Set the key to OFF, remove the key from the key
switch and place in
a secure area.
3.
Perform Lock
Out/Tag Out
procedure.
4.
Disconnect the
battery.
5.
Remove the access
cover.
6.
Using a clean,
lint-free cloth, clean
the area around the
filter element
housing.
7.
Unscrew oil filter cap and pull the filter element from
the tank.
8.
Install the new filter element and tighten fill cap.
9.
Operate the hydraulic system by running the mast
functions and observe the filter for oil leaks.
10. Reinstall the access cover.
After prolonged truck use, hydraulic oil will be
hot and can burn human skin. Allow hydraulic oil
to cool before performing this procedure.
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