Hyster F007, Service & Repair Manual

Page: 7 / 48

5000 SRM 969 Operation
General
This section has the description and repair proce-
dures for telescopic empty container handling attach-
ment and operator controls. See Figure 1. Three
methods of engagement are covered in this section
as follows: • Model 553 with one pair of horizontally mounted
twist locks
• Model 555 with one pair of suspended hooks
• Model 558 with one pair of vertically mounted twist
locks
Description
The extendable container attachment can be used
at three widths: 6.1 m (20 ft), 12.2 m (40 ft), and
when equipped with optional stops, 9.15 m (30 ft).
Models 553 and 558 use twist locks and Model 555
uses hooks, which are entered into side pockets of
container corner castings. See Figure 1, Figure 2,
Figure 3, and Figure 4. The attachment has a cen-
ter frame, two outer booms, and two floating vertical
end beams. The center frame is installed on the car-
riage and can move from side to side with the use
of a sideshift cylinder. The outer booms, supported
by several glide plates for friction reduction, extend
and retract from the center frame through the use of
hydraulic extension cylinders. The extension cylin-
ders on attachment are actuated by hydraulic pres-
sure from main control valve. A vertical tube is mounted to the end of each outer
boom. A vertical end beam assembly fits into each
tube and facilitates engaging and disengaging the at-
tachment with containers. The vertical end beams
can move vertically 150 mm (6 in.) to allow align-
ment when required. This allows the driver the pos-
sibility of raising or lowering the attachment after
one twist lock or hook has been engaged with a con-
tainer, so the other end can be accurately aligned be-
fore it is inserted.
Header hoses and an electrical cable connect the hy-
draulic and electrical circuits to the attachment.
Operation
GENERAL
The attachment has hydraulic and electrical circuits
to control its operation. See Figure 15, Figure 16,
Figure 17, Figure 18, Figure 19, and Figure 20. The
operator controls these functions from the operator’s
compartment. Depending on the model, attachment
has selector valves for operation of sideshift, exten-
sion cylinders, and twist locks. The electrical cir-
cuit incorporates sensors and switches to verify cor-
rect position of container to attachment and the twist
locks.
NOTE: Model 555 does not have indicators to tell
driver that attachment is correctly engaged or dis-
engaged.
SELECTOR VALVES
Each selector valve has two solenoids that operate
the spool. The spool opens and closes a hydraulic
circuit for certain functions. Dependant upon model,
selector valves are mounted on a common manifold
on attachment.
SIDESHIFT CIRCUIT
The attachment moves horizontally on the carriage.
The operator energizes left or right solenoid using
sideshift lever. Hydraulic oil is then supplied to ap-
propriate cylinder end and attachment is moved. Re-
lief valve within circuit limits maximum hydraulic
pressure to 14.0 MPa (2030 psi). The sideshift cylin-
der is connected between the carriage and the center
frame. There are four glide plates on the bottom and
six glide plates on the top of the carriage to guide the
movement of the attachment on the carriage. The
bottom of the carriage is secured in the forward di-
rection by two stop blocks.
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