Toyota 7BPUE15 User Manual

Toyota Orderpicker Model 7BPUE 15 Service Manual Section 9. Theory of Operation
Pump Sense
The pump sense line monitors the status of the
pump contactor at all times. If the pump
contactor is closed when commanded open, an
error code displays and the PC contactor opens.
If the pump contactor is open when
commanded closed, an error code displays.
CV - 1 Valve
This 5 psi (34.5 kPa) check valve makes sure
that oil returning from the lift cylinders does
not drive the lift pump and motor backward.
CV - 2 Valve
This is the 100 psi (689.4 kPa) fork hang - up
valve. If the pressure in the return line falls
below 100 psi (689.4
kPa), the valve will close
and not allow the carriage to lower.
Flow Control Valves
Each lift cylinder has a flow control valve at the
bottom of the cylinder. If a lift hose fails, the
flow in the side cylinders will be limited to 9
gpm (34 lpm) while the flow in the center
cylinder will be limited to
1 1 gpm (4 1.6 lpm) .
Oil Filter Check Valve
The oil filter is mounted to an adapter that
incorporates a spring
- loaded check valve. It
provides a bypass around the filter in case the
oil pressure in the return line is greater than
what the filter can handle. Additionally, if the
filter gets clogged, the oil will bypass the filter
and return to the hydraulic reservoir.
REL - 1 is the high pressure relief valve. It opens
when lift pressure exceeds the pressure
necessary to lift a full
- rated load.
00700 - CL222 - 05, 1 5 March 2005

Toyota 7BPUE15 Specifications

General

Brand	Toyota
Model	7BPUE15
Category	Lifting Systems
Language	English