Checking The Radiator - Yamaha XT660R Service Manual

RADIATOR
EAS00455

CHECKING THE RADIATOR

1. Check:
• radiator fins
Obstruction → Clean.
Apply compressed air to the rear of the radi-
ator.
Damage → Repair or replace.
NOTE:
_
Straighten any flattened fins with a thin, flat-
head screwdriver.
2. Check:
• radiator hoses
Cracks/damage → Replace.
3. Measure:
• radiator cap opening pressure
Below the specified pressure → Replace
the radiator cap.
Radiator cap opening pressure
110.0 ~ 140.0 kPa
(1.10 ~ 1.40 kg/cm
16.0 ~ 20.3 psi)
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a. Install the radiator cap tester 1 and radiator
cap tester adaptor 2 and radiator cap
tester adaptor 3 to the radiator cap 4.
Radiator cap tester
90890-01325
Radiator cap tester adaptor
90890-01352
Radiator cap tester adaptor
90890-01497
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" in chapter 8.
6 - 3
COOL
2
,
M M MMM M M MMM M
L L LLL L L LLL L
M MMM M MMM
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