Re-Tensioning The Engine Hydraulic Pump Drive Belts; Servicing The System Fuses And Circuit Breakers - Vanair AIR N ARC I 300 SERIES Operation Manual

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AIR N ARC I-300 SERIES ALL-IN-ONE POWER SYSTEM
Ensure that the traction side of the
drive belt [ G
directly contact the drive pulleys [ H ,
B , M , N , K and J ] that run the
generators and hydraulic pump.
Also note that the drive belt tracks
on the inside of the clutch assembly
[ M ] (closest to the engine).
3. Replace the compressor serpentine
drive belt (refer to Section 5.4.3.2 ).
At this point the belts will need to be checked
for proper tension. Consult Section 5.4.3.3
on how to
serpentine belt, and Section 5.4.3.1 to re-
tension the compressor serpentine belt.
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Vanair recommends that the air
compressor and generator/ hydraulic
pump drive belts both be changed at the
same time even if only one of the belts is
in need of being changed.
5.4.3.5 RE-TENSIONING THE ENGINE
HYDRAULIC PUMP DRIVE BELTS
The hydraulic pump can only be accessed
when the machine's maintenance access
panels are removed. Once the panels are
removed, consult Figure 5-8 , and the
following procedure:
TABLE 5B: MEASURING BELT DEFLECTION (All measurements given are estimations)
SPAN LENGTH (in) DEFLECTION
DISTANCE (in)
17.91
] runs on the inside to
1
re-tension the generator
NOTE
P
q
F
c
RE-TENSION
0.25 12.000
090045-OP_r1
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1. Make certain that the machine is off
and the ignition key removed.
2. Loosen, but do not remove, the three
(3) tensioner plate bolts [ D ] mounting
the tensioner plate/pump sheave [ A ]
in place. Loosen only enough to allow
tensioner plate to pivot along the
grooves in the plate while still
remaining in position.
3. Use a 1/2" drive torque wrench applied
to the square tensioning hole [ E ] to
manually rotate the plate/pump
sheave about the loosened, but
anchored, mounting bolt (bottom bolt).
Apply torque of 51 in-lbs. as per Table
5B: 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 three (3) tensioner
plate bolts [ D ] to 12 ft-lbs. (16.3 Nm) to
secure the tensioner into position.
5.4.4 SERVICING THE SYSTEM FUSES
AND CIRCUIT BREAKERS
Consult Figure 5-9 for the location of the DC
welder generator fuse, and Figure 5-10 to
determine the location of the engine and
generator breakers. Figure 5-11 gives the
locations of the Power System fuses.
P - Span Length
c - Center Distance
F - Deflection Force
q - Deflection Distance
DEFLECTION FORCE (lbs)
ALL RIBS
NEW INSTALL
18.5
SECTION 5: MAINTENANCE
TORQUE TO IN-LB TENSION
RE-TENSION NEW INSTALL
53 81
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