Hyster F003, Service & Repair Manual

NOTE

Some parts of the upright move at differ-
ent speeds during raising and lowering.
All components should move smoothly
without jerking.

B. All weldments and the carriage should lower com-
pletely. The lift cylinder should reach the end of its
stroke before the stop for the inner channel is con-
tacted. The lift chain(s) must be adjusted if the stop is
contacted before the lift cylinder completely retracts.

C. Raise and lower the upright with a capacity load.
The upright should raise and lower smoothly. If the
load drifts downward when the lift/lower lever is in
NEUTRAL, there may be a leak in the hydraulic sys-
tem.

D. With the load lowered, tilt the upright backward
and forward. The upright should tilt smoothly and both
tilt cylinders should stop evenly. Excessive movement
of the tilt cylinders when the tilt lever is in NEUTRAL
may indicate a leak in the system.

Attachments

Hydraulic attachments should operate smoothly.
Check clamp attachment with a load raised slightly to
make sure the clamping action is maintained. There
should be no leakage.

FIGURE 11. CHECKING THE HYDRAULIC

SYSTEM

Hydraulic System (Item 1)

Check the hydraulic oil level with the carriage low-
ered and the engine OFF. Make sure the oil is at op-
erating temperature. The dipstick has three marks (see
Figure 11). Add oil only as required or oil will flow
out of the breather.

WARNING

The operating temperature for the hy-
draulic oil is 130° to 200° F (54° to 93° C).

Uprights (Item 11)

A. Slowly raise and lower the upright several times
without a load. The upright should raise and lower in
the correct sequence without jerking.