Removing The Oil Pan; Checking The Sprocket And Chain; Checking The Oil Pump; Checking The Relief Valve - Yamaha YZF-R1 Series Service Manual

EAS30333

REMOVING THE OIL PAN

1. Remove:
• Oil pan
• Gasket
• Dowel pins
TIP
Loosen each bolt 1/4 of a turn at a time, in stag-
es and in a crisscross pattern. After all of the
bolts are fully loosened, remove them.
EAS30336

CHECKING THE SPROCKET AND CHAIN

1. Check:
• Oil pump drive sprocket
Cracks/damage/wear → Replace.
2. Check:
• Oil pump drive chain
Damage/stiffness → Replace the oil pump
drive chain and oil pump drive sprocket as a
set.
EAS30337

CHECKING THE OIL PUMP

1. Check:
• Oil pump driven sprocket
• Oil pump housing
• Oil pump inner rotor
• Oil pump outer rotor
• Oil pump cover
Cracks/damage/wear → Replace the oil
pump assembly.
2. Check:
• Oil pump operation
Rough movement → Repeat steps (1) and
(2) or replace the oil pump assembly.
G088997
EAS30338

CHECKING THE RELIEF VALVE

1. Check:
• Relief valve body "1"
• Relief valve "2"
• Spring "3"
• Damage/wear → Replace the defective
part(s).
EAS30339

CHECKING THE OIL DELIVERY PIPES

The following procedure applies to all of the oil
delivery pipes.
1. Check:
• Oil delivery pipe 1
• Oil delivery pipe 2
• Oil pipe 1
Damage → Replace.
Obstruction → Wash and blow out with com-
pressed air.
EAS30340

CHECKING THE OIL STRAINER

1. Check:
• Oil strainer
Damage → Replace.
Contaminants → Clean with solvent.
EAS30342

ASSEMBLING THE OIL PUMP

1. Lubricate:
• Inner rotor
• Outer rotor
• Oil pump shaft
(with the recommended lubricant)
Recommended lubricant
Engine oil
2. Install:
• Oil pump driven sprocket "1"
• Pin "2"
• Inner rotor "3"
• Outer rotor "4"
• Oil pump cover "5"
• Oil pump housing bolt
Oil pump housing bolt
10 N·m (1.0 kgf·m, 7.4 lb·ft)
5-57
OIL PUMP