3 - 4
Assembly (continued)
6. Apply grease to a new 'O'-ring I and install it on the shaft
D.
Clean the metallic face of the seal, coat the metallic face
with engine oil and install the hub C onto the shaft D. Fit
new wire clip E or roll pin F.
Wrap sealing tape around the plug A with one thread
remaining uncovered. Insert this plug 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 M and apply pressure of 1.9 bar (28
lbf/in
2
). Check for air bubbles.
8. Remove the assembly from the tank. Dry with
compressed air. Add the specified oil (see Section 3).
Install plug using an appropriate pipe sealant.
Section J
Track and Running Gear
9803/6400
Section J
3 - 4
Issue 1
Idler Wheel (continued)
F
G
D
I
C
E
A
M
A
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