Geely Emgrand X7. Manual part — 265

5

FE01-2018b

GT301-013

Tool for installing
front oil seal of
crankshaft

6

FE01-2019b

GT301-015

Crankshaft Rear Oil
Seal Installation Tool

7

FE01-2020b

GT301-016

Tool for installing and
removing piston pin

8

FE01-2021b

GT301-018

Tool for locating
camshaft

9

FE01-2022b

GT301-020

Tool for locating
crankshaft belt disc

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10

FE01-2023b

GT301-021

Tool for tightening
flywheel

11

FE01-2024b

GT301-022

Tool for tightening
timing chain

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2.14 Lubrication system (4G18)

2.14.1 Specifications

2.14.1.1 Fastener Tightening Specification

Torque Range

Fastener Name

Model

Metric (N.m)

English system
(lbf-ft)

Connecting bolt of oil pan and
cylinder body

M6 8-10

6-7

.

4

Connecting Bolts Between Oil
Strainer and Cylinder Block

M6 8-10

6-7

.

4

Oil Sensor Plug and Cylinder Block
Connecting Bolts

R 1/8

11.5-19.5

8.6-14.4

Oil Filter and Cylinder Pipe Adapter

UNF3/4″－16 16-24

11.8-17.8

Oil Filter Adapter

M28×1.5

33-37

24.4-27.4

Oil Pump Mounting Bolt

M6

8-10

6-7 . 4

Oil drain plug of oil pan

M12

25-35

18.5-25.9

2.14.1.2 Oil Pump Specification

Side Clearance

0.0250-0.062mm (0.0010-0.0024in)

Tooth Clearance

0.0300-0.099mm (0.00120-0.0039in)

Engine oil pressure induction plug
lightening pressure

≤40kPa(≤6psi)

Oil Pump Output Pressure 0.6MPa(87psi)

Oil Pump Relief Valve Opening Pressure

0.42-0.58MPa(61～85psi)

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2.14.2 Description and Operation

2.14.2.1 Operated and description

Oil Pan

The engine sump is installed at the bottom of the crankcase; engine oil is extracted by the oil
pump from the oil sump; after passing through the oil filter, the engine oil lubricates the cylinder
body and cover respectively through two oil passages; the engine oil flows to the connecting rod
through the engine oil passage in the crankshaft, then to the piston and cylinder, and returns to the
oil sump finally. In the second oil path, the engine oil passes through the engine oil passage to the
camshaft, and also passes through the internal oil passage of the camshaft to lubricate the valve
assembly and returns to the oil sump finally.

Oil Pump

Oil pump draws the engine oil from the oil pan and then pump the engine oil with pressure to the
various parts of the engine. Oil pump inlet has an oil filter - set filter. Set filter blockage may
damage the oil pump and cause the pump oil inoperative, and the lubricating system will be
unable to establish a normal oil pressure, which will cause the engine mechanical damage. Oil
pump is driven by the crankshaft concave. As long as the crankshaft rotates, the oil pump will be
working. The oil pump displacement is fixed, so when the engine speed is high, the oil pump
output pressure will exceed the needs of the engine lubrication system. There is a safety valve in
the oil pump assembly. The safety pressure relief valve cavity is connected with the oil pump
intake chamber. When the output pressure exceeds 0.5 MPa (73 psi), the security valve is open,
the excess oil returns to the oil pump through the valve. With the normal oil supply, the safety
valve bypass is closed.

Lubrication Descriptions

The oil filter stand is integrated on the crankcase body. The engine oil flows through the engine oil
filter core through the lower oil passage of the engine oil filter seat upward. After being filtered,
engine oil passes through the oil filter seat upper oil path to return to the cylinder block. Engine oil
passes through the oil path to the cylinder block front. The engine oil is supplied to various
cylinder heads, main shaft oil path, VVT electromagnetic valve and camshaft position actuator
through these front oil paths.

Each cylinder head oil passage introduces the engine oil into the cylinder head and the camshaft
bearing journal. Engine oil passes through the main oil path to the VVT solenoid valve, VVT
solenoid valve oil cavity, to the VVT actuator. The VVT solenoid valve is used for controlling the
intake camshaft position actuator and the engine control module (ECM) controls the VVT
solenoid valve. When the engine control module provides power to the VVT solenoid valve, the
solenoid valve guides the engine oil to flow through the cylinder hood cover camshaft front
bearing caps. Engine oil passes through the intake camshaft bearing caps into the camshaft journal
drilled hole and flows to the intake camshaft front installation surface. Then, the engine oil flows
to the camshaft position actuator corresponding oil path. VVT solenoid valve guides engine oil
into the system corresponding oil path, so that the engine oil pressure acting on the intake
camshaft position actuator internal blades. The intake camshaft (installed on the camshaft position
actuator inner rotor) rotates relative to the sprocket (mounted on the intake camshaft position
actuator housing). At idle, the internal pin will lock the rotor to the intake camshaft actuator
housing. When starting, the cam actuator position will maintain the original position or the default
position. VVT solenoid valve guides engine oil hydraulic pressure to loosen the lock pin, so that
the intake camshaft position actuator works. Oil pump contains a small engine oil nozzle, which
sprays the engine oil to timing chain components. Engine oil passes through the camshaft timing
chain drive belt area or cylinder hood cover and cylinder block casting oil return path and returns
to the oil pan.

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