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TM 5-4210-220-34
3-8.
ENGINE - Continued
(6)
While holding the support (4), rotate the gear (6) by hand If gear does not rotate freely or there is excessive
bushing-to-support clearance repair the blower drive gear as detailed in the REPAIR section following
b.
Idler Gear Removal
(1)
Before removing the idler gear assembly,
check the Idler gear, hub, and bearing
assembly for any noticeable wobble or
shake. Apply pressure by firmly grasping
the rim of the gear with both hands, then
rock the gear in relation to the bearing. The
bearings must be replaced if the gear
wobbles or shakes. If the gear assembly
has no noticeable play It is only necessary
to check the pre-load before reinstallation.
(2)
Remove the bolt (1) and special washer (2)
that secure the idler gear hub (3) to the
cylinder block.
(3)
Carefully remove the idler gear assembly
from the cylinder block end plate.
(4)
While supporting the hub (3), rotate the
gear (5) by hand. If the gear does not
rotate freely, or there is damage as detailed
In step 1 preceding, replace the bearings
(4) as detailed in REPAIR section following.
3-143
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