Danfoss Series 42 Manuel d'entretien - Page 3

Parcourez en ligne ou téléchargez le pdf Manuel d'entretien pour {nom_de_la_catégorie} Danfoss Series 42. Danfoss Series 42 7 pages. Axial piston closed circuit pumps

Imprimer la page
Danfoss Series 42 Manuel d'entretien
Service
Manual
Series
42
Axial Piston
Closed
Circuit
Pumps
Adjustments
Frame size
cm3
28132
4v51
Control
MDC/EDC/HC-EDC
NFP
MDC/EDC/HC-EDC
NFP
Lock
nut
mm
13
17
t7
17
Servo
adjust screw mm [in]
5
7
7
7
Lock
nut
torque
N.m
flbf.ft
]
231171
40
[30]
40 [30]
40 [30]
Control
n€ullal adjustment
for
MDC
and
EDC/HC-EDC
Control neutral adjustment
aligns
the
pump swashplate
andthe controlspoolso that
a
zeto
angle
contfolsetting
provides
a
zero
degree swashplate setting.
Perform
this adjustment
wheneveryou
adjust
or
move
any
part
of
the
control or swashplate mechanlsm
or
afEr
you
adJust
the
pump
neutral settlng.
,A
wurn,no
The
following
proceciure
requires
the vehicle/nrachine
to
be cjisabled (wheels raised
off
the
ground, work
functiotr
discannected,
etc.)
r,nrhile
performing the
6rrocedure
in order
to
prevent injury to the technician
and llvstanders.
1.
Disconnect the
externalcontrol
linkage (for
MDC) or
controlsignalinput
(for
EDC
and HC-EDC)from
the
pump,
2.
Install
pressure
gauges
in
the
servo
gauge ports
M4
and
M5
to
measure pressure on
the pump
servo
piston.
3. Startthe
prime mover and run at
normaloperating
speed.
4.
Loosen
the control
neutral adjustment
seal
lock
nut
(D015).
5. Turn the adjustment
screw (D014)
clockwise
untilone
of
the
gauges
registers
an increase
in
pressure
on the
servo
piston.
Mark
the
position of
the
adjustment
screw.
Turn the
screw
counterclockwise
until the other
gauge
registers an increase
in
pressure
on
the
servo
piston.
Mark
the
position of the adjustment
screw.
Turn the adjustment
screw
clockwise
so
that it
is
midway between
the
marks.
Adjustment
screw
movement produces constant
change
for both
directions,
so
both
the
pressure
gauges should
indicate
nearly
equal
pressures.
6.
While holding
the
adjustment
screw (D014)
in position,
torque
the
seal
lock
nut
(D015)
to
04
N.m
[30
tbf.ft].
7.
Stop
the
prime mover and remove
the
pressure gauges. Remove
the
plugs
in
the
gauge ports.
8.
Connect
the
external
control
linkage (for
MDC)
or control signal
input
(for
EDC
and
HC-EDC)
to
the
pump.
Reconnect
the work
function.
520L0638
.
Rev
0300
'July
201 5