Yamaha YZF-R1 2020 Service Manual page 394

EAS31659
REMOVING THE RADIATOR
1. Remove:
• Hose clamp (Clic-R) "1"
TIP
• Remove the hose clamp using the hose clamp
pliers "2".
• When removing the hose clamp, make sure
that the thick tip "a" of the hose clamp pliers is
directed as shown in the illustration.
1
2
G089027
2. Disconnect:
• Radiator inlet hose
• Radiator outlet hose
3. Remove:
• Radiator
EAS30439
CHECKING THE RADIATOR
1. Check:
• Radiator fins
Obstruction → Clean.
Apply compressed air to the rear of the radia-
tor.
Damage → Repair or replace.
TIP
Straighten any flattened fins with a thin, flat-head
screwdriver.
G089028
2. Check:
• Radiator hoses
Cracks/damage → Replace.
3. Measure:
• Radiator cap valve opening pressure
Below the specified pressure → Replace the
radiator cap.
a. Install the radiator cap tester "1" and radi-
ator cap tester adapter "2" to the radiator
cap "3".
a
G089029
b. Apply the specified pressure for ten sec-
onds and make sure there is no drop in
pressure.
4. Check:
• Radiator fan
Damage → Replace.
Malfunction → Check and repair.
Refer to "COOLING SYSTEM" on page 8-27.
EAS30440
INSTALLING THE RADIATOR
1. Install:
• Radiator
2. Connect:
• Radiator inlet hose
• Radiator outlet hose
3. Install:
• Hose clamp (Clic-R) "1"
TIP
• Install the hose clamp using the hose clamp pli-
ers "2".
6-5
RADIATOR
Radiator cap valve opening pres-
sure
107.9–137.3 kPa (1.08–1.37 kgf/
cm², 15.6–19.9 psi)
Radiator cap tester
90890-01325
Mityvac cooling system tester kit
YU-24460-A
Radiator cap tester adapter
90890-01352
Pressure tester adapter
YU-33984
New