Piper Lance II User Manual

8.
Connect
green
lead
to positive
terminal
of power
supply.
Pump
should
operate
in
reverse,
dropping
reading
on high-pressure
gauge
to
zero.
The
low pressure
gauge
should
indicate
500
to
800
psi. Disconnect
green
lead.
Both
pressure
gages
should
indicate
zero
psi.
9. Should
it be
necessary
to
check
the
pump
motor,
first
connect
the ammeter
in
the electrical
circuit
with
the
positive
terminal
of
the
meter
to the
black
lead
and
negative
terminal
of
the
meter
to
the negative
terminal
of
the DC
power
supply.
10.
Connect
the
blue
lead
from
the
pump
motor
to the
positive
terminal
of
the
power
supply.
With
a
high
pressure
indication
on
the
pressure
gauge,
the ammeter
should
read
75
amperes
maximum.
Disconnect
the
blue
lead.
11.
Connect
the
green
lead
from
the
pump
motor
to
the positive
terminal
of
the
power
supply.
With
low
pressure
indication
within
the
500
to 800
psi
range,
the
ammeter
should
read
between
15 to
35 amperes.
NOTE
In
the
event
any
of
the
various
tests
do
not
perform
satisfactorily,
the
pump
assembly
should
be
replaced.
12.
Disconnect
the-green
lead
from
the power
supply
and
permit
the
pressure
to
drop
before disconnecting
the hydraulic
lines.
6-10.
INSTALLATION
OF
HYDRAULIC
PUMP.
(Refer
to Figure
6-3.)
a. Insert
grommet
(22)
in pump
base
mounting
hole.
b. Insert
bushing
(20)
in grommet
(22).
c.
Place
washer
(21)
over
bolt
(19)
and
insert
bolt
through
grommet
(22)
and bushing
(20)
and
pump
base
(16).
d.
Place
washer
(23)
and
bushing
(24)
over
bolt
(19)
and
secure
to
mounting
shelf
(25).
e. Connect
hydraulic
Lines
to
pump.
f. Connect
pump
electrical
leads.
Blue
wire
to
gear
up
solenoid,
green
wire
to
gear
down
solenoid,
and black
wire
to ground.
g.
Check
fluid
level
in pump.
Refer
to
Section
II for
filling
instructions.
h. With
airplane
on
jacks,
operate
pump
to purge
hydraulic
system
of air,
and
check
for
leaks.
After
operation,
recheck
fluid
level.
6-11.
GEAR
BACK-UP
EXTENDER
ACTUATOR
ASSEMBLY.
6-12.
REMOVAL
OF
GEAR
BACK-UP
EXTENDER
ACTUATOR
ASSEMBLY.
(Refer
to
Figure
6-6.)
The
back-up
extender
actuator
is
located
under
the
center
seat
floorboard.
To
reach
the
actuator,
remove
the center
seats
and
floorboard.
a. Disconnect
the
actuator
electrical
leads at
the quick
disconnect
terminals.
b.
Disconnect
the manual
override
control
rod
(30)
at the
actuator
control
arm
(19)
by
removing
cotter
pin,
washers,
and
clevis pin
(1).
c.
Disconnect
the
pressure
(13)
and
static
(11)
hoses
from
the elbows
(12)
of the
diaphragm
housing
(10)
by
releasing
clamps
and
sliding
the
hoses
from
their
elbows.
The
hoses
should be
tagged for
ease of
reassembly.
d.
Place
a
shop
cloth
under
the
actuator
hydraulic
valve
(25)
to absorb
fluid,
and then
disconnect
the
hydraulic
tubes
(26, 39,
40
and 41)
from
cross
(38)
and
tee
(46).
Cover
open
tubes
and fittings
to prevent
contamination.
Revised:
9/2/78
HYDRAULIC
SYSTEM
111
LANCE II SERVICE MANUAL

Piper Lance II Specifications

General

Manufacturer	Piper Aircraft
Max Takeoff Weight	3, 600 lb (1, 633 kg)
Crew	1
Horsepower	300 hp
Seats	6
Length	27 ft 7 in (8.41 m)
Capacity	5 passengers