Hyster W20-30ZR, Manual

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Manual Lowering 2000 SRM 1025
Hydraulic Reservoir
DESCRIPTION
The hydraulic reservoir is made of a durable,
translucent plastic that allows the operator to see
how much hydraulic oil is in the reservoir.
The
reservoir is clamped to the adapter plate on the
bottom of the pump and motor assembly in the drive
unit compartment or hydraulic unit compartment.
The reservoir has either a graduated scale or MIN
and MAX marks on the side depending on model
and should only be filled with hydraulic oil to the
graduated scale or MIN mark. See Table 1. There
is a fill cap located on the top of the reservoir and a
drain plug and O-ring located at the bottom on one
side of the reservoir.
Table 1. Hydraulic Reservoir
Model Description Reservoir Markings Hydraulic Oil
Quantity
W25/30/40ZC Counterbalance MIN/MAX 11.5 liter (12.2 qt)
W30/40ZA Straddle Stacker Graduated Scale 11 liter (11.6 qt)
W20/30ZR Reach Carriage Graduated Scale 11 liter (11.6 qt)
Manual Lowering
WARNING
Always verify that no one is under or near
the lift mechanism or load during the manual
lowering procedure. Verify that there are no
obstructions beneath the lift mechanism or
load. If the mast does not lower when the man-
ual lowering valve is activated, deactivate the
valve immediately and determine the cause.
WARNING
Failure to return the manual lowering screw to
the full clockwise position will cause the forks
to lower unexpectedly.
A provision is provided on the lowering valve to
allow manual lowering of the forks if necessary.
Manual lowering is accomplished by turning the
manual override screw counterclockwise with a
7-mm wrench. In this position, the valve will remain
open.
Loosen the manual override screw SLOWLY until
the forks begin to lower. Be sure to return the screw
to the original position once the manual lowering
process is complete by slowly turning the screw until
it stops. Torque the manual override screw to 4.0
N•m (36 lbf in).
On the W30-40ZA models without sideshift, the man-
ual override screw is located on the back of the low-
ering solenoid near the mounting wall. See Figure 2.
On all other trucks with auxiliary functions, the
manual override screw is located under the lowering
solenoid block above the hydraulic reservoir.
See
Figure 3.
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