Yamaha MBK MW125 2014, Service Manual

Page: 274 / 380

RADIATOR
6-3
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, flathead
screwdriver.
2. Check:
• Radiator hoses
• Cooling system air bleed hose
• Coolant reservoir hoses
Cracks/damage
→
Replace.
3. Measure:
• Radiator cap opening pressure
Below the specified pressure
→
Replace the
radiator cap.
▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼▼▼
a. Install the radiator cap tester “1” and radiator
cap tester adapter “2” to the radiator cap “3”.
b. Apply the specified pressure for ten seconds
and make sure there is no drop in pressure.
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4. Check:
• Radiator fan
Damage
→
Replace.
EAS30440
INSTALLING THE RADIATOR
1. Install:
• Radiator fan case “1”
TIP
Tighten the radiator fan case bolts in the proper
tightening sequence as shown.
2. Fill:
• Cooling system
(with the specified amount of the recom-
mended coolant)
Refer to “CHANGING THE COOLANT” on
page 3-21.
3. Check:
• Cooling system
Leaks
→
Repair or replace any faulty part.
Radiator cap opening pressure
93.3–122.7 kPa (0.93–1.23
kgf/cm², 13.5–17.8 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
T
R
.
.
Radiator fan case bolt (front low-
er side)
12 Nm (1.2 m·kgf, 8.7 ft·lbf)
LOCTITE®
Radiator fan case bolt
11 Nm (1.1 m·kgf, 8.0 ft·lbf)
LOCTITE®
1
3
5
4
1
2