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75 - 6
Assembly (cont’d)
3 Piston
Assembly.
a
Place the piston
N
on the press and using the jig
P
as shown, install the seal ring
Q
(pre-assemble the
'O'-ring
R
and one back up ring
S
beforehand).
b
After attaching the seal ring
Q
and one more back-
up ring
T
, ensure the seal ring
Q
is fully seated by
using jig
U
.
4
Piston Rod Assembly.
a
Secure the piston rod.
b
Fit the cylinder head onto the piston rod using
assembly jig
V
.
Note:
Do not get the wiper ring
D
and the U-ring
G
, caught
on the stepped portion.
c
Fit the cushion seal
W
, cushion bearing
X
and
piston
Y
in place.
Note:
The cushion seal
W
is unnecessary for the bucket
cylinder.
Where there is a cushion at the retraction side (end of piston
rod), assemble the cushion bearing as detailed in step 5
before fitting the piston
Y
.
d
Insert a shim
AA
and tighten the piston nut
BB
to
the specified torque.
Note:
Prepare a power wrench using a hydraulic cylinder
(see
Ram Piston Head Nut
-
Removal and Fitting
)
Note:
Face the cushion seal slit
W
towards the piston side.
e
Tighten piston nut
BB
using the rig and procedure
described in
Ram Piston Head Nut
-
Removal and
Fitting
. After tightening the piston nut
BB
, insert the
steel ball
CC
and install the set screw
DD
, tighten it
to the specified torque, then stake the set screw in
two places with a punch
EE
.
Section E
Hydraulics
9803/6410
Section E
75 - 6
Issue 1
Hydraulic Rams
V
Q
R
S
U
T
N
P
W
Summary of Contents for JS130
Page 65: ...Section 3 Section 3 9803 6410 Issue 1 9 1 9 1 Routine Maintenance Component Location Diagram...
Page 118: ......
Page 119: ...3 1 Section C Electrics 9803 6410 Section C 3 1 Issue 1 Layout Operator s Cab...
Page 142: ...5 3 Section C Electrics 9803 6410 Section C 5 3 Issue 1 Pump Control FLOW CHART...
Page 207: ......
Page 209: ......
Page 210: ...3 4 Section E Hydraulics 9803 6410 Section E 3 4 Issue 2 Schematics Shuttle Block...
Page 532: ...Contents Page No Technical Data 1 1 i Engine 9803 6410 i Issue 1 Section K Section K...