SECTION 6: MAINTENANCE
AIR N ARC
®
300 SERIES ALL-IN-ONE POWER SYSTEM
®
PAGE - 94
090012-OP_r0
1. With the machine off and the ignition key
removed, open and remove the front panel.
2. Loosen the four tensioner plate bolts [
A
]
mounting the tensioner plate [
C
] to the
compressor only enough to allow tensioner
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
TOOLS NEEDED
REPLACEMENT
PART(S)
Wrench - Size 6mm Hex Head
Not Applicable
Torque Wrench, 1/2” Drive
NOTE
If new belts are installed, recheck the
tension after 10-20 hours of operation,
and adjust if necessary.
KEY
DESCRIPTION
KEY
DESCRIPTION
A
TENSIONER PLATE MOUNTING AND
ADJUSTMENT BOLTS
E
Loosen bolts to allow tensioner plate to pivot man-
ually to achieve new belt-tensioned position.
B
IDLER
F
Pivot plate by applying torque wrench to tension-
ing hole.
C
TENSIONER PLATE
G
Belt tension adjustment should be verified using a
tension tester.
D
TENSIONING HOLE
Figure 6-18: Compressor Serpentine Belt Re-tensioning
A
B
C
D
F
E
G
