Replacing And Re-Tensioning The Serpentine Drive Belts; Re-Tensioning The Air Compressor Serpentine Belt - Vanair AIR N ARC RELIANT 300 Series Operations Manual & Parts List

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AIR N ARC 300 SERIES ALL-IN-ONE POWER SYSTEM
KEY
A
B
C
Figure 6-17: Pressure Switch Adjustment for Cut-in / Cut-out Pressure Settings
3. After making your adjustments, position and
re-fasten the cover to the pressure switch
body with the cover retaining screw.
4. Close the hood, and cycle the compressor
several times to ensure the correct
pressures are set.
5. If additional adjustments are needed, repeat
steps one through four until the correct
pressures are set.
6.6.15 REPLACING AND RE-TENSIONING THE
SERPENTINE DRIVE BELTS
The compressor and generator are driven by the engine
using two belts. The belts will generally not need
replacement during the service life of the compressor
system. However, you may find that over time they
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.
6.6.15.1 RE-TENSIONING THE AIR COMPRESSOR
SERPENTINE DRIVE BELT
Consult Figure 6-18 , and the following procedure.
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A
B
DESCRIPTION
GENERATOR SUPPORT BRACKET
PRESSURE SWITCH
COMPRESSOR CUT-IN PRESSURE ADJUSTMENT SCREW
090012-OP_r0
SECTION 6: MAINTENANCE
C
NOTE
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Vanair recommends that the air
compressor and generator serpentine
belts both be changed at the same time
even if only one of the belts is in need of
being changed.
NOTE
Proper alignment of all pulleys on the
serpentine belt is crucial. A chirping or
squeaking sound, noticeable after
replacing the belts, may indicate an
alignment problem. Always inspect and
replace the belts as recommended in the
maintenance section of this manual.
Misalignment of the v-belts can cause
unnecessary jumping and wear of the
belt, resulting in the belt coming off.
WARNING
Never operate the machine with the
access door removed.
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