Hyster A238, Руководство пользователя

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DFSSFP Carriage with Integrated
Forks
The forks for the DFSSFP carriage with Integrated
Forks are directly installed on the carriage, which
reduces the distance between load and truck. See
Figure 16.
1. CARRIAGE
2. INTEGRATED FORK
Figure 16. Dual Function Carriage with Integrated
Forks
Carriage Valve
Trucks with one (side shift) function only, do not
have a directional control valve because the carriage
function is directly operated by the auxiliary section
of the main control valve. The corresponding
alternating Pressure and Tank (P & T) system uses
two colored straps to identify the two header hoses,
which are routed over hose sheaves at the top of the
mast:
• Green-Yellow is connected with control valve
port Aux A.
• Green-Green is connected with control valve
port Aux B.
Trucks with several auxiliary functions have a
Directional Control Valve that has a spool section
for each function. Oil supply is through a fixed
Pressure and Tank (P & T) system, which requires
three header hoses with following strap marking:
• Green is connected with control valve port
Aux A.
• Yellow is connected with control valve port
T3.
• White-Yellow is connected with control valve
port T Aux.
Alternating Pressure and Tank (P & T)
Alternating P & T is applied when a limited number
of functions allow the control valve on the truck to
determine the direction of the oil flow. Examples
are: one single function, Simultaneous Fork
Positioning only, and Dual Function with Fork
Positioning only.
For alternating P & T systems there are two header
hoses, which are marked with two colored straps.
• Green-Yellow is connected with control valve
port Aux A.
• Green-Green is connected with control valve
port Aux B.
For alternating P & T systems, two different
carriage control valves are used:
• Flow
divider for simultaneous Fork
Positioning.
• Valve for Dual Function with Side Shift and
Fork Positioning (DFSSFP).
The header hoses connect with the inlet module,
which transfers oil supply to identical spool
sections. The function of each spool evolves from its
electrical and hydraulic connection. The sequence of
these functions is different for carriages with pin
type forks and for DFSSFP type carriages. An
overview of the location of the spool connections is
in Table 1.
NOTE:
Nomenclature for the right and left fork
positioner cylinder can be confusing. The right fork
positioner cylinder moves the right fork, however
the right fork positioner cylinder is located at the
left side of the carriage.
Description And Operation 4000 SRM 1664
12