Checking The Radiator - Yamaha YZF-R1S Service Manual

RADIATOR
EAS00455

CHECKING THE RADIATOR

1. Check:
S radiator fins
Obstruction ! Clean.
Apply compressed air to the rear of the radia-
tor.
Damage ! Repair or replace.
NOTE:
Straighten any flattened fins with a thin, flat-
head screwdriver.
2. Check:
S radiator hoses
S radiator pipes
Cracks/damage ! Replace.
3. Measure:
S radiator cap opening pressure
Below the specified pressure ! Replace the
radiator cap.
Radiator cap opening pressure
108 X 137 kPa
(1.08 X 1.37 kg/cm
1.0 X 1.3 bar, 15.6 X 19.9 psi)
a. Install the radiator cap tester 1 and radiator
cap tester adapter 2 to the radiator cap 3 .
Radiator cap tester
90890-01325, YU-24460-01
Radiator cap tester adapter
90890-01352, YU-33984
b. Apply the specified pressure for ten seconds
and make sure there is no drop in pressure.
4. Check:
S radiator fan
Damage ! Replace.
Malfunction ! Check and repair.
Refer to "COOLING SYSTEM" in chapter 8.
6-3
COOL
2
,