INSTALL TUNNEL CONTROLS IDLER
Check idler (1) for up and down play. Check for
gap between bushing (7) and idler (1). There
shall be no gap. If there is play or gap, adjust
idler as follows:
Do not use shear nut to pull bushing
into contact with idler bearing. Nut
can strip and damage bolt.
Remove shear nut (6).
Install tension nut (8).
Do not damage or bend structure
while seating bushing.
Torque nut (8) to seat bushing (7) on idler
bearing. Do not exceed 170 inch-pounds.
Do not strike bolthead with strong
force. Damage to structure can result.
If necessary, carefully tap head of bolt (4) to
seat bushing (7) on bearing.
Install new bolt (4), new nut (6), and
new washer (5). Torque nut to 60 to 90
Check tunnel control idler (1) for binding. If there
is no binding go to step 8. If there is binding
replace idler. There shall be no binding.
Install cotter pin (9).
Push edge of insulation blanket (10) back into
place (Task 2-210).