Chery Tiggo 5 (T21). Manual - part 159

13–

Lubrication System Flowchart

Description

1. Solid arrow: indicates the flow of high-pressure lubricant.
2. Hollow arrow: indicates the flow of low-pressure lubricant.
3. Dark area: indicates the high-pressure lubricant.
4. Bright area: indicates the low-pressure lubricant.

1 - Oil Filler Cap

2 - Cylinder Head

3 - Oil Pressure Switch

4 - Oil Filter

5 - Cylinder Block

6 - Oil Pump

7 - Engine Oil

8 - Drain Plug

9 - Oil Strainer

10 - Oil Pan

11 - Crankshaft

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13–

DIAGNOSIS & TESTING

Problem Symptoms Table

HINT:
Use the table below to help determine the cause of the problem symptoms. Check each suspected area in
sequence. Repair or replace the faulty components, or adjust as necessary.

Symptom

Suspected Area

See page

Low pressure in lubrication system

Oil pan (dirty, leaked)

13-20

Oil strainer (mesh dirty, blocked)

13-23

Oil pump

13-24

Line (blocked)

High oil consumption

Engine oil (excessive oil filling capacity)

13-9

Oil filter (leaked)

13-13

Crankshaft front oil seal (damaged)

07-39

Crankshaft rear oil seal (damaged)

07-44

Oil pressure switch

13-16

Oil drain plug (leaked)

Oil pan (leaked)

13-20

Each engine seal surface leakage

Engine oil leakage

Oil pressure warning light comes on

Engine oil (insufficient oil, low oil viscosity)

Oil filter (blocked)

13-13

Oil strainer (blocked)

13-23

Crankshaft front oil seal (damaged)

07-39

Crankshaft rear oil seal (damaged)

07-44

Oil pressure switch (damaged)

13-16

Instrument cluster (oil pressure warning
light)

38-42

Cylinder block (cracks occur in water
jacket, resulting in coolant leaking into the
oil pan, which will cause oil dilution)

07-78

Line (blocked)

After cranking , clunking sound from engine
is heard

Engine oil (high oil viscosity, excessive oil
filling capacity)

Cylinder block (oil passage blocked)

07-78

13–

Engine Oil Level Inspection

HINT:
Check the oil level indicated by oil dipstick, when engine stops after it reaches operating temperature.

1. Park vehicle on level ground, stop the engine after warming up and wait for 5 minutes.
2. Open the engine hood and pull out the oil dipstick, and

wipe it clean with a piece of clean cloth.

3. Reinsert the oil dipstick, check if oil level is proper.
4. Pull out the oil dipstick again, check if oil level is proper.

If engine oil level is low, check for leakage and add oil up to the full level mark.
a. If oil level is at or above the "MAX" mark, drain the

excessive engine oil.

b. If oil level is between "MIN" mark and "MAX" mark, it

shows that the oil level is proper.

c. If oil level is below the "MIN" mark, it is necessary to

add engine oil.

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CAUTION

 Please place a piece of cloth under the oil dipstick end to prevent the oil from splashing onto the engine

and body.

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CAUTION

 When adding engine oil, the oil level should not be above the "MAX" mark.

13–

Oil Pressure Inspection

Preconditions

1. Engine oil level is normal.
2. Oil filter is used within 5000 km.
3. Engine reaches the normal operating temperature.

Inspection

1. Remove the engine lower right protector assembly (

See page 48-29

2. Disconnect the oil pressure switch connector (1) and

remove the oil pressure switch (2).



(Tightening torque: 20 ± 2 N·m)

3. Screw the oil pressure tester into the thread hole of oil

pressure switch as shown in the illustration.

4. Start engine. When the engine inspection conditions are met, read the oil pressure values at low idling

speed, high idling speed and high speed respectively. If lubrication system pressure is low, clean the oil
pan and oil strainer mesh, and then test again. If lubrication system pressure is still low, it shows there is a
malfunction in the oil pump and the oil pump must be replaced.
Oil pressure at idling speed (700 ± 50 r/min): higher than 1.5 bar.
Oil pressure at high idling speed (2000 r/min): higher than 3.6 bar.
Oil pressure at high speed (4000 r/min): higher than 4.7 bar.

5. Install the oil pressure switch.

HINT:
Apply a small amount of seal gum to the threads when installing the oil pressure switch.

6. Connect the oil pressure switch connector and check the engine oil for leakage.
7. Install the engine lower right protector assembly.

WARNING

 DO NOT remove oil pressure switch until engine cools down.
 Prolonged and repeated contact with engine oil will be harmful to your skin. If engine oil spills on your

skin, wash it off immediately with water. In addition, the used engine oil contains potentially harmful
contaminants, which may cause skin cancer. Therefore, always take proper skin protection measures
when performing vehicle service.

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