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Mazda3 BK (2003-2009)

Oil pump — description (Mazda 3 BK)

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The oil pump is installed in the front engine cover. The crankshaft drives the inner rotor with a chain and an oil pump sprocket. An efficient and compact oil pump with 5 teeth on the outer gear and 6 teeth on the inner gear is used. The gears have trochoidal engagement. The pump consists of inner and outer rotors, a pressure reducing valve and a housing.

Attention! The oil pump is non-disassemblable. If the oil pump is faulty, replace it as an assembly.

Fig. 2.41. Oil pump: 1 – oil pump housing (with built-in bypass valve); 2 – oil pump chain…

Fig. 2.41. Oil pump: 1 – oil pump housing (with built-in bypass valve); 2 – oil pump chain tensioner spring; 3 – oil pump chain tensioner; 4 – oil pump chain guide; 5 – oil pump chain; 6 – oil pump sprocket

Original version of the article on the website [mazbook.ru]

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This text was checked by: Evdokia Filimonova

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Mazda3 BK » Lubrication system

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General information about the engine lubrication system

Oil pan — description
Oil filter — description
Oil Spray Nozzle Valve — Description
Operation of oil spray nozzle valves
Checking oil pressure

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Mazda3 BK (2003-2009)

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