Piper PA-32RT-300T User Manual

LANCE
II SERVICE
MANUAL
6-4.
HYDRAULIC
PUMP.
6-5.
REMOVAL
OF
HYDRAULIC
PUMP.
The
hydraulic
pump
with
reservoir
incorpor-
ated
is located
in
the
nose
section
of
the
fuselage.
Access
to
the
pump
is
through
the
access
panel
in
the
nose
baggage
compartment.
a.
Disconnect
the
pump
electrical
leads
from
the
pump
solenoid
relays
and
the
ground
wire
from
the
battery
shelf.
b.
Disconnect
the
hydraulic
lines
from
the
pump.
Cap
the
line
ends
to
prevent
contam-
ination.
c.
Remove
pump
by
removing
pump
attaching
bolts.
6-6.
DISASSEMBLY
OF
HYDRAULIC
PUMP.
(Refer
to
Figure6-3.)
After
the
hydraulic
pump
has
been
removed
from
the
airplane,
cap
or
plug
all
ports,
and
clean
exterior
of
pump
using
a
dry
cleaning
solvent
to
remove
accumulated
dirt
and
dust.
The
three
major
compo-
nents
of
the
pump
assembly
are
the
pump
base,
pump
motor,
and
valve
and
gear
case.
These
three
major
components
should
be
disassembled
as
follows:
a.
Pump
Base:
Remove
pump
base
(16)
from
valve
and
gear
case
by:
1.
Cutting
safety
wire
and
removing
bolts
(17)
with
washers
securing
pump
base
to
pump
and
gear
case.
2.
The
check
valve
within
the
pump
base
should
be
removed
for
cleaning
purposes
only.
To
remove
valve,
cut
safety
wire
and
remove
bolt,
spring
and
steel
ball.
Replace
O-ring
at
reassembly.
b.
Pump
Motor:
The
pump
motor
may
be
removed
from
the
pump
and
disassembled
as
follows:
1.
Remove
thru
bolts
(4) from
head
(1)
of motor.
Using
a
knife
cut
the
seal
coating
between
the motor
head
and
case.
2.
Lift
the
head
up from
the
case
approximately
.50
of an
inch,
this
will
allow
inspec-
tion
of
brushes
(3)
without
the
brushes
unseating
from
the
commutator.
(Refer
to
Paragraph
6-7
for
brush
inspection.)
The
brush
leads
are
secured
to
the
head
assembly.
3.
Raise
the
head
assembly
(1)
off
the
armature
(8)
and
note
the
small
thrust
ball
(7)
located
between
the
end
of
the
armature
(8)
and
motor
head.
Do
not
misplace
this
bearing.
4.
Draw
the
armature
from
the
motor
frame
(9).
Note
the
number
of
thrust
washers
(11)
mounted
on
the
drive
end
of
the
armature
shaft.
5.
Remove
the
motor
frame
from
the
pump
reservoir
(13).
c.
Valve
and
Gear
Case:
Remove
valve
and
gear
case
(15)
from
reservoir
(13)
as
follows:
1.
Remove
eight
screws
from
flange
of
body
and
separate
the
two
assemblies
(18).
2.
Pump
gears
and
valves
should
be removed
for
cleaning
purposes
only.
To
remove
cap
securing
gears,
remove
attaching
bolts.
The
two
valve
springs
should
be positively
identi-
fied
with
their
cavities;
otherwise,
it
will
be
necessary
to readjust
each
valve
for
proper
operat-
ing
pressure.
6-7.
CLEANING,
INSPECTION
AND
REPAIRS
OF
HYDRAULIC
PUMP.
NOTE
Repair
facilities
must
be
clean
to
prevent
contamination
of
pump
components.
Proper
and
careful
handling
should
be
exercised
to
prevent
damaging
pump
components.
Revised:
9/2/78
H
9
HYDRAULIC
SYSTEM
1H19

Piper PA-32RT-300T Specifications

General

Brand	Piper
Model	PA-32RT-300T
Category	Aircrafts
Language	English