DOB 1300-1556 | X3-45 Commuter PA-1648 Maintenance Manual Section 01 revised Jan 2021
5. Replace noisy idlers or if a play is found.
Replace the automatic belt tensioner as a
complete unit.
6. Record the results of the inspection.
4.2 AUTOMATIC BELT TENSIONER
BUSHING WEAR
Automatic belt tensioner bushing wear may
result in belt misalignment.
1. Check the automatic belt tensioner T-1 thru
T-3.
2. Pry the automatic belt tensioner arm and
check for a play between the arm and the
spring case (
FIGURE 25).
FIGURE 25: CHECKING BUSHING WEAR
3. If bushing wear is suspected, remove the
tensioner. Inspect the tensioner for any
signs of wear. Check for bearing noise as
well as metal to metal contact between the
arm and spring case which is a sign of
bushing wear. Check for cracks in the
tensioner body.
4. Replace the automatic belt tensioner if found
defective.
5. Record the results of the inspection.
4.3 BELTS AND IDLERS VISUAL
INSPECTION
1. Inspect drive belts for cracks, frayed
material, missing chunks in the belt,
abrasion and peeling. Replace belts if
damaged.
2. Visually inspect all idlers for signs of
deterioration, loose fasteners, etc.
3. Record the results of the inspection.
MAINTENANCE
Visually inspect belts and idlers for signs of
deterioration, cracks, frayed material
at the
intervals specified by the Lubrication And
Servicing Schedule in
LUBRICATION & SERVICING SCHEDULE.