4 - 5
Assembly (cont’d)
6
Apply grease to a new 'O'-ring
F
and install it on the
rear end of shaft
B
.
Clean the metallic face of the seal
E
, coat the metallic
face with engine oil and install the hub
C
onto the shaft
B
. Fit new wire clip
G
.
Wrap sealing tape around the plug
H
with one thread
remaining uncovered. Insert this plug into the hub
C
but
leave the other one out until after testing.
7
Using extreme care to prevent water entering the
assembly, lower it into a tank of water. Connect
compressed air at
B
and apply pressure of 1.9 bar (28
lbf/in
2
). Check for air bubbles.
If leakage occurs, replace seals.
8
Remove the assembly from the tank. Dry with
compressed air. Add engine oil via plug
C
aperture.
Install plug
H
using an appropriate pipe sealant.
9
Carry out steps 1 to 4 of
Idler Wheel and Recoil Unit,
Replacement.
Section J
Track and Running Gear
9803/6020
Section J
4 - 5
Issue 1
Idler Wheel
284260
284340
284340
B
C
G
H
H
B
F
B
B
C
C
Summary of Contents for JS70
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Page 189: ...Section E Section E Hydraulics 9803 6020 Issue 1 33 4 33 4 Control Valves Control Valve 291360...
