Adjusting Axial Fan-Belt Tension; Pressure Testing Engine - Arctic Cat 1987 AFS El Tigre Service Manual

Adjusting Axial
Fan·Belt Tension
1. Remove t he fan cover.
2. Using the Arct ic Fan Holder (pI n 0144-113),
remove the nut, lock washer, and washer
securing the pulley halves.
3. Sl ide the outer pulley half off the shaft and ac-
count for any shim(s).
4. Add or remove shim(s) to attain correct belt
tens ion.
_ NOTE: To increase belt tension, remove
- shim(s); to decrease belt tension, install
shim(s).
5. Install the fan belt and the oute r pulley half on
the shaft and, using t he Arct ic Fan Holder,
secure pu ll ey with a washer, lock washer, and
nut.
6. Affirm fan -belt tension; adj ust if necessary.
7. Install fan belt cover.
Pressure Testing
Engine
1. Test the engine for air leaks using the follow-
ing proced ure:
a. Install two intake-man ifold port plugs and
t ighten the flange c lamps securely.
Fig. 2·131
40
b. Place a rubber plug and cover on each ex-
haust port and secure.
Fig. 2·132
A875
c. Connect a pressure t ester to the impulse
fitting on the crankcase; then pressurize
the crankcase to 12 psi and close the
valve.
Fig. 2·133
•
CAUTION
•
DO NOT exceed 15 psi pressure or damage to the
seals
will
result.
d. Monitor the pressure gauge. Pressure
must not drop at a rate of more than 1 psi
per minute.
e. If the pressure drops fas ter than specified,
inspect for an air leak with soapy water or
completely submerge the pressurized
engine in c lean fresh water. Repai r as
needed.