AIR N ARC
®
150 SERIES
SECTION 5: MAINTENANCE
090051-OP_r0 (FEB-2014)
PAGE - 37
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arrow of rotation on the
compressor pulley (see
Figure 5-
3
[
D
]).
3. Start at the bottom edge of the
pulley as per
Figure 5-6, Step
#1
. Continue to set the belt into
the proper groove on the
compressor pulley and engine
pulley.
4. After the belt is seated into the
compressor pulley groove, hold
the belt and the pulley with the
left hand (
Figure 5-6, Step #2
),
while rotating the pulley in the
direction shown. At the same
time, feed the belt upward with
the right hand as the pulley is
turned (
Figure 5-6, Step #3
).
The belt will slip into place once
the left hand, which is holding
the belt, reaches near the top of
the compressor pulley.
5.5.2.8 RE-TENSIONING OR
REPLACING THE GENERATOR
SERPENTINE BELT
The generators are driven by the engine
using a serpentine belt. This belt will
generally not need replacement during the
service life of the generator system.
However, over time it may become loose and
need to be tightened. The proper tension can
be determined by using a tension tester to
measure the deflection from a given force.
The belt guard must be removed to access
the drive belt. The 150 Series system utilizes
a single serpentine v-belt to drive the
generator system.
Consult Section 5.5.2.1,
Accessing the Drive Belts
, for instructions
on how to remove the belt guard.
5.5.2.9 RE-TENSIONING THE
GENERATOR SERPENTINE
DRIVE BELT
To re-tension the generator serpentine belt,
consult
Figure 5-7
. Once the generator drive
belt is established onto the engine, generator
and idler pulleys the spring tensioner on the
idler pulley will self-adjust the belt. There is
no additional adjustment required.
5.5.2.10 REPLACING THE GENERATOR
SERPENTINE DRIVE BELT
In order to replace the generator serpentine
belt, the compressor belts will need to be
removed. Consult
Section 5.5.2.3 Re-
Tensioning the Generator Serpentine
Belt,
Steps #3 and #4 to remove the
compressor belts.
To replace the generator serpentine belt,
refer to
Figure 5-7
and the following
procedure:
1. With the machine off, the ignition
key removed, the positive (+)
battery cable disconnected from
the battery, and the compressor
v-belt removed, the worn
generator serpentine belt can
now be replaced.
2. Loosen the generator belt by
performing the procedure given in
Section 5.5.2.3, Re-Tensioning
the Generator Serpentine Belt
.
By loosening the tensioner plate
bolt (item [
C
] in
Figure 5-7
), and
pivoting the generator idler
sheave assembly to its maximum
position, the generator belt will be
loosened enough to remove it
from the generator and engine
drive pulleys.
3. Run a new serpentine belt into
place about the generator, engine
and idler pulleys as shown in
Figure 5-7
. Keep in mind when
tracking the belt that the tread-side
faces the inside of the driver
pulleys, as shown in item [
F
].
4. After the belt has been situated
onto each track groove on the
generator and engine drive
pulleys and the idler, the tension
will need to be reset via the
position of the idler sheave
assembly, and checked.
