3 - 4
Assembly (cont’d)
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 engine oil via plug A aperture.
Install plug 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
9803/6410
Section J
3 - 4
Issue 1
Idler Wheel
F
G
D
I
C
E
A
M
A
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