Checking The Radiator; Installing The Radiator - Yamaha WR250R Service Manual

EAS26390

CHECKING THE RADIATOR

1. Check:
Radiator fins "1"
G
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 (IN/OUT)
G
Radiator pipes
G
Cracks/damage → Replace.
3. Measure:
Radiator cap opening pressure
G
Below the specified pressure → Replace the
radiator cap.
Radiator cap opening pressure
108.0–137.4 kPa (15.7–19.9 psi)
(1.08–1.37 kgf/cm
MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM
a. Install the radiator cap tester "1" and radiator
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
b. Apply the specified pressure for ten seconds
LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL
4. Check:
EAS26400

INSTALLING THE RADIATOR

1. Fill:
2. Check:
MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM
2
)
a. Attach the radiator cap tester "1" to the radia-
6-2
and make sure there is no drop in pressure.
Radiator fan
G
Damage → Replace.
Malfunction → Check and repair.
Refer to "COOLING SYSTEM" on page 8-25.
Cooling system
G
(with the specified amount of the recom-
mended coolant)
Refer to "CHANGING THE COOLANT" on
page 3-18.
Cooling system
G
Leakage → Collect or replace.
tor.
Radiator cap tester
90890-01325
Radiator pressure tester
YU-24460-01
Radiator cap tester adapter
90890-01352
Radiator pressure tester adapter
YU-33984
RADIATOR