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SECONDARY TRANSMISSION SYSTEM 9 - 3
Removal of Cog Belt
To gain access to the entire secondary transmission system,
you must first completely remove the cab and bellypan. See
Chapter 1 for details.
Loosen the bolt that holds the tensioner sprocket in place. (Ref.
No. 9 in the exploded view on the first page of this chapter)
Remove the tension on the cog belt system by unscrewing the
tensioning bolt shown in the top picture at the right. Continue
until the belt is no longer tight against the teeth of the tensioner
sprocket.
Remove the two setscrews that hold the taper lock and the 28
3
tooth drive sprocket in place. (Position 1) Using a steel punch,
tap the hub 2-3 times to loosen the grip between the taper lock
and the sprocket.
Insert and thread in one of these two setscrews into the
1
extraction hole (Position 2), at a maximum torque of 14 N-m
(125 lbf-in). The sprocket and taper lock assembly should now
2
be free to slide off the shaft. If some resistance remains, tap the
sprocket again with the punch.
4
5
At this point, begin to slide the belt off of the lower 56 tooth drive
sprocket and simultaneously slide the entire 28 tooth driven
sprocket assembly and belt off the jackshaft as shown in the
picture at the right.
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