OIL PUMP CONSTRUCTION [L5]SM1934357
OIL PUMP CONSTRUCTION [L5]

id0111c7100600

• The oil pump is installed inside the engine front cover. The crankshaft drives the inner rotor through the oil pump chain and oil pump sprocket.
• The oil pump component consists of the oil pump body, oil pump sprocket, oil pump chain and oil pump chain tensioner.
• A trochoid gear has been adopted on the oil pump.
• The oil pump consists of the inner and outer rotors, relief valve, and oil pump body.
• The oil pump cannot be disassembled. If there is an oil pump malfunction, replace it as a single unit.
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Oil pump specification

Item

Engine speed [rpm]

Specification (kPa {kgf/cm2, psi})
Oil discharge pressure (reference value)
[Oil temperature: 100°C {212°F}]
1,500
193—400 {1.97—4.07, 28.0—58.0}
3,000
395—649 {4.03—6.61, 57.3—94.1}

• A silent chain (link connecting type) has been adopted for the oil pump chain to reduce chain operation noise when the chain and the sprocket engage.
• The engine oil in the engine front cover lubricates the oil pump chain. Wear resistance has been improved using nitriding processing of the pins constructing the oil pump chain.
• The sintered material in the oil pump sprocket has been furnace hardened to improve durability.
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Oil pump chain, oil pump sprocket specification

Item

Specification (mm {IN.EN_UK})
Oil pump chain
Pitch size
8 {0.3}
Oil pump sprocket
Outer diameter
47.96 {1.888}
Driven tooth width
6.15 {0.242}