Hydraulic System Oil; Engine Oil - Hyster Fortis S40FT Operating Manual

Maintenance

Hydraulic System Oil

WARNING
At operating temperature the hydraulic oil is HOT. Do
not permit the hot oil to touch the skin and cause a
burn.
CAUTION
Do not permit dirt to enter the hydraulic system when
the oil level is checked or the filter is changed.
Never operate the hydraulic pump without oil in the
hydraulic system. The operation of the hydraulic pump
without oil will damage the pump.
Check the hydraulic system for leaks and damaged or
loose components. Heavy-duty or high-temperature opera-
tions can require more frequent checks.
164

Engine Oil

After the engine has stopped, wait one minute before
checking the oil level. See Figure 40, Figure 41, Fig-
ure 42, or Figure 43. Keep the oil at the correct level as
indicated on the dipstick. Use the correct oil as shown in
the Maintenance Schedule.
There is an indicator light for the engine oil pressure on the
Display Switch Cluster. During normal operation the red
indicator light will illuminate when the key switch is turned
to ON, if the truck is equipped with a key switch, or when
the power ON/OFF button is pressed, if the truck is equip-
ped with a keyless option, and will stay illuminated until cor-
rect oil pressure is obtained, at which time the light will go
off.
If the light continues to stay on when the engine is running,
the engine oil pressure is low. Stop the engine and check
the oil level. See Figure 40, Figure 41, Figure 42, or Fig-
ure 43. Do not restart the engine until the low pressure
condition has been corrected.