Disassembling The Water Pump; Checking The Water Pump; Assembling The Water Pump - Yamaha YZF-R125 Service Manual

YamahaR125.COM
EAS26510

DISASSEMBLING THE WATER PUMP

1. Remove:
• Water pump seal "1"
NOTE:
Remove the water pump seal from the inside of
the water pump housing "2".
2
2. Remove:
• Bearing "1"
NOTE:
Remove the bearing from the outside of the wa-
ter pump housing "2".
2
EAS26530

CHECKING THE WATER PUMP

1. Check:
• Water pump housing cover
• Water pump housing
Cracks/damage → Replace.
• Impeller shaft
Cracks/damage/wear → Replace.
• Bearing
Rough movement → Replace.
• Radiator outlet hose
Cracks/damage → Replace.
EAS26560

ASSEMBLING THE WATER PUMP

1. Install:
• Water pump seal "1"
(into the water pump housing "2")
1
1
New
ECA14080
CAUTION:
Never lubricate the water pump seal surface
with oil or grease.
NOTE:
• Install the water pump seal with the special
tools.
• Install the water pump seal with the special
tools to the specified depth as shown in the il-
lustration.
Mechanical seal installer
90890-04145
Middle driven shaft bearing driv-
er
90890-04058
Bearing driver 40 mm
YM-04058
3
2
A. Push down
3. Mechanical seal installer
4. Middle driven shaft bearing driver
a. 0–0.5 mm (0–0.02 in)
2. Lubricate:
• Water pump seal lip
Recommended lubricant
Lithium-soap-based grease
3. Install:
• Water pump housing gasket "1"
6-8
WATER PUMP
A
4
1 New
a
New