Vanair Air N Arc All-in-One Power Systems 300 Operations Manual & Parts List page 107

®
AIR N ARC 300 SERIES ALL-IN-ONE POWER SYSTEM
A
B
KEY DESCRIPTION
A TENSIONER PLATE MOUNTING AND
ADJUSTMENT BOLTS
B IDLER
C TENSIONER PLATE
D TENSIONING HOLE
plate to rotate/slide along the grooves in the
plate while still in position (DO NOT
remove).
3. Use a 1/2" drive torque wrench applied to the
square tensioning hole [D] to manually rotate
the plate/idler about the loosened, but
anchored, mounting bolt. Apply torque of 51
in-lbs as per Table 6B: Measuring Belt
Deflection for the proper tension
measurement.
4. Once a position is achieved that accounts for
a satisfactory tension in the belt, torque the
four (4) tensioner plate bolts [A] to 12 ft-lbs
(16.3 Nm) to secure the tensioner into
position.
C
D
Figure 6-16: Compressor Serpentine Belt Re-tensioning
090010-OP_r0
®
E
G
KEY DESCRIPTION
E Loosen bolts to allow tensioner plate to pivot
manually to achieve new belt-tensioned posi-
tion.
F Pivot plate by applying torque wrench to ten-
sioning hole.
G Belt tension adjustment should be verified
using a tension tester.
If new belts are installed, recheck the
tension after 10-20 hours of operation,
and adjust if necessary.
Excessive loosening of mounting bolts
[A] to free the tensioner plate will cause
Compressor seal may leak oil during the
adjustment of the tensioner plate. Check
compressor oil level after the adjustment
has been made and the bolts have been
SECTION 6: MAINTENANCE
F
NOTE
IMPORTANT
oil to leak.
re-tightened.
PAGE - 89