Yamaha YZFR1Y(C) 2009 Service Manual page 344

EAS26390
CHECKING THE RADIATOR
1. Check:
• Radiator fins
Obstruction → Clean.
Apply compressed air to the rear of the
radiator.
Damage → Repair or replace.
TIP
Straighten any flattened fins with a thin, flat-
head screwdriver.
2. Check:
• Radiator hoses
• Radiator pipes
Cracks/damage → Replace.
3. Measure:
• Radiator cap opening pressure
Below the specified pressure → Replace
the radiator cap.
Radiator cap opening pressure
107.9–137.3
kgf/cm², 15.6–19.9 psi)
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a. Install the radiator cap tester "1" and radia-
tor cap tester adapter "2" to the radiator
cap "3".
Radiator cap tester
90890-01325
Radiator pressure tester
YU-24460-01
Radiator cap tester adapter
90890-01352
Radiator pressure tester
adapter
YU-33984
kPa (1.08–1.37
6-3
b. Apply the specified pressure for ten sec-
onds and make sure there is no drop in
pressure.
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4. Check:
• Radiator fan
Damage → Replace.
Malfunction → Check and repair.
Refer to "COOLING SYSTEM" on page
8-29.
EAS26400
INSTALLING THE RADIATOR
1. Fill:
• Cooling system
(with the specified amount of the recom-
mended coolant)
Refer to "CHANGING THE COOLANT"
on page 3-30.
2. Check:
• Cooling system
Leaks → Repair or replace any faulty
part.
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a. Attach the radiator cap tester "1" and radia-
tor cap tester adapter "2" to the radiator.
Radiator cap tester
90890-03125
Radiator pressure tester
YU-24460-01
Radiator cap tester adapter
90890-01352
Radiator pressure tester
adapter
YU-33984
RADIATOR