60 - 5
Relief valve
Dismantling the Relief Valve
1
Loosen the plug
12
with a spanner.
2
Remove the plug
12
, the ‘O’ ring
45
and the shim
27
.
3
Remove the spring
19
, the spool
5
, the shim
14
and the
poppet
4
.
Cleaning / Inspection
1
Clean the dismantled parts with a coating of clean oil.
2
Dry with compressed air. Place each part on a clean
sheet of paper or vinyl for inspection.
3
Verify that all sliding parts move easily.
4
Replace the springs if they are damaged, deformed or
worn.
5
Replace all used ‘O’ rings with new before assembly.
6
Check that there is no foreign matter in any passages or
grooves.
Assembling the Relief Valve
1
Install the spool
5
into the poppet
4
.
2
Install the poppet
4
and the spool
5
, the shim and the
spring
19
into the body
15
.
3
Install the ‘O’ ring
45
and the shim
27
into the plug
12
.
4
Install the plug 12 into the body 15.
Torque tighten to 102 Nm (75.1 lbf ft).
Check Valve
Dismantling the Check Valve
1
Loosen the plug
31
with a spanner.
2
Remove the plug
31
, the ‘O’ ring
44
.
3
Remove the spring
10
and the plunger
8
.
Cleaning / Inspection
1
Clean the dismantled parts with a coating of clean oil.
2
Dry with compressed air. Place each part on a clean
sheet of paper or vinyl for inspection.
3
Verify that all sliding parts move easily.
4
Replace the springs if they are damaged, deformed or
worn.
5
Replace all used ‘O’ rings with new before assembly.
6
Check that there is no foreign matter in any passages or
grooves.
Assembling the Check Valve
1
Install the plunger
8
and the spring
10
into the body
15
.
2
Install the o-ring
44
onto the plug
31
.
3
Install the plug
31
into the body
15
.
Torque tighten to 48 Nm (35.4 lb/ft).
Shut off Valve 1
Dismantling the Shut off Valve 1
1
Loosen the hexagonal socket bolt
33
with a hex.
spanner.
2
Remove the hexagonal socket bolt
33
and the body 17.
3
Remove the ‘O’ rings
40,41,46
from the body 17.
4
Hold the body
17
in a vice, (do not damage the ‘O’ ring
assembling surface) loosen the plug
31
(beside the
spring) with a hex. spanner.
5
Remove the plug
31
, the ‘O’ ring
44
.
6
Loosen the plug
31
(spool head side) with a hex.
spanner
6
Remove the plug
31
, the ‘O’ ring
44
.
7
Remove the spring
9
and the spool
18
from the body.
Cleaning / Inspection
1
Clean the dismantled parts with a coating of clean oil.
2
Dry with compressed air. Place each part on a clean
sheet of paper or vinyl for inspection.
3
Verify that all sliding parts move easily.
4
Replace the springs if they are damaged, deformed or
worn.
5
Replace all used ‘O’ rings with new before assembly.
6
Check that there is no foreign matter in any passages or
grooves.
Assembling the Shut off Valve 1
1
Install the spool
18
and the spring into the body
17
.
2
Install the o-ring
44
onto the plug
31
3
Hold the body
17
in a vice, (do not damage the o-ring
assembling surface) install the plug 31 in two positions.
Torque tighten to 35.4 Nm (48 lbf ft).
4
Install the o-rings
40,41,46
to the body
17
.
5
Tighten the body 17 to the body 15 using the hex socket
bolts.
Torque tighten to 6.86 Nm (5 lbf ft).
Note:
Care must be taken when assembling the valve as
incorrect assembly direction will result in the circuit being
disconnected.
Section E
Hydraulics
9803/6020
Section E
60 - 5
Issue 1
Multiple Valve
Summary of Contents for JS70
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