Ingersoll-Rand P185WIR, Operating, Maintenance & Parts Manual

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(2) Checking and adjusting cooling fan V--belt
When there is not enough tension in the V--belt, the V--belt will slip
making it impossible for the alternator to generate power and cooling
water pump and cooling fan will not work causing the engine to
overheat. Check and adjust the V--belt tension (deflection) in the
following manner.
1) Press the V--belt down with your thumb [approx. 98N(10kgf)]. at the
middle of the V--belt span to check the tension (deflection).
Available positions to check and adjust the V--belt tension (deflection)
are at the A, B and C showing with the arrow direction as shown
illustration right.
You may choose a position whichever you can most easily carry out the
check and adjustment on the machine unit.
The specified deflection to be measured at each position should be as
follows.
A B C
10
µ
14mm 7
µ
10mm 9
µ
13mm
D. Radiator fan
E. Set bolt
F. Alternator
G. Deflection
H. Press with thumb
I. Crankshaft V--pulley
J. V--belt
2) If necessary, adjust the V--belt tension (deflection). To adjust the
V--belt tension, loosen the set bolt and move the alternator to tighten the
V--belt.
3) Visually check the V--belt for cracks, oiliness or wear. If any , replace
the
V
--belt with
new one.
S
“New, V--belt” refers to a V--belt which has been used less than 5
minutes on a running engine.
S
”Used V--belt” refers to a V--belt which has been used on a running
engine for 5 minutes or more.
Install the new V--belt adjusting the deflection to the value in the table
below according to the above manner. After adjusting. run the engine
for 5 minutes end readjust the deflection to the value in the table above.
A B C
8
µ
12mm 5
µ
8mm 7
µ
11mm
(Adjusting the V--belt tension)
A. Adjust the V--belt tension by prying with a wooden bar
B. Alternator
C. Adjusting bracket
Use of genuine Ingersoll--Rand fan belt
Always use genuine Ingersoll--Rand fan belts as they provide high
driving ability and long operating durability. Use of non--Ingersoll--Rand
fan belts could result in premature belt wear or belt elongation leading
to engine overheating or excessive belt noise.
CAUTION:
To help avoid being injured, check and adjust the fan belt tension with
engine stopped.