5.6
HYDRAULIC
SYSTEM
G1700·G1800·G1900·G2000 WSM,10831
Relief Cover and Relief Valve
1.
Unscrew
the
relief
cover
mounting
screws (10),
and remove the
relief
cover (11).
2. Remove
the
spool
return
spring (13).
3. Unscrew the adjusting screw (1), and remove
the
adjusting shim
(2),
plain
washer (3), spring
(4),
spring holder (5), steel ball (6), collar (7), valve seat
(8) and O-ring (9).
(When reassembling)
• Replace
the
relief cover gasket
(12)
with
a
new
one.
• Take care
not
to
damage
the
O-ring (9).
• Install
the
relief valve,
noting
the
number
of
shims .
• IMPORTANT
•
After
reassembling
the
relief
valve, be sure
to
Valve Seat
adjust
its
setting
pressure. (See page 5.6-2)
O·ring
Relief Cover
Mounting
Screw
Relief Cover
(6)
Steel8all
(12)
Relief Cover Gasket
(7)
Collar (13) Spool Return Spring
[2]
CONTROL VALVE ADAPTOR
CHECKING
AND
ADJUSTING
Relief Valve Setting Pressure
1.
Remove
the
seat and fender.
2. Remove
the
HST
pipe 1 and
fitting
(7)
from
the
control valve
adaptor
(6).
3. Set
the
adaptor
3 and pressure
gauge
50
(Code No: 07916-
52961)
to
the
control valve
adaptor
.
•
NOTE
• The
adaptor
3 is included
in
the
oil
pressure tester (Code
No:
07916-32032).
• When
setting
the
adaptor
3,
use
the
O-ring
on
the
fitting.
4. Start
the
engine and set
the
engine
speed
at
rated speed,
and read
the
pressure gauge.
5.
If
the pressure
is
not
within
the
factory
specifications, adjust
with
the
adjusting shims (3),
(1)
Adj usting Screw
(8)
(2)
Adjusting Shim
(9)
(3) Plain Washer (10)
(4)
Spring
(5)
Spring
Holder
( 11)
Relief valve
setting pressure
Factory spec.
1.96
to
2.45 MPa
20to25
kgf/cm
2
284
to
356
psi
(Reference)
• Thckness
of
adjusting shims: 0.3
mm
(0.012 in.)
0.5
mm
(0.020 in.)
(1) Plug
(5) Steel Ball
(2) Washer
(6)
Control
Valve
Adaptor
(3) Shim
(7)
Fitting
(4) Spring
80B3F132
5.6-4
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