2009 CHERY TIGGO engine

Downloaded from www.Manualslib.com manuals search engine Inspection
NOTE :
All measurements should be taken with the engine block at room temperature, 21°C.
Engine Block
•Clean cylinder block thoroughly and check all core hole plugs for evidence of leaking.
• Examine block and cylinder bores for cracks or fractures.
• Check block deck surfaces for flatness. Deck surface must be within service limit of 0.050 mm.
Cylinder Bore
• The cylinder walls should be checked for out-of-round and taper with cylinder indicator or equivalent. If the cyl-
inder walls are badly scuffed or scored, the cylinder block should be replaced, and new pistons and rings fitted.
• Measure the cylinder bore at three levels in directions A and B. Top measurement should be 12 mm down and
bottom measurement should be 12 mm up from
bottom of bore.
CYLINDER BORE
Cylinder Size 86.50 - 86.53 mm
Cylinder Cylindrically ≤0.01 mm
Assembly
NOTE :
Cleanliness is extremely important during the engine assembly procedure. Any foreign material, including any mate-
rial created while cleaning gasket surfaces, that enters the oil passages, coolant passages or the oil pan can cause
engine failure.
NOTE :
Assemble all components in their original position.
1. Install the pistons to the connecting rods.
2. Using a piston ring expander, install the piston rings.
3. Assemble all components in the reverse order of disassembly.
ENGINE UNIT REPAIR
LTSM020126
02–220Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Pistons
Specifications
Clearance Specifications - Pistons
DESCRIPTIONSPECIFICATION (mm)
Surface Distortion Limit 0.15
Out-Of-Round < 0.008
Taper < 0.01
Clearance Specifications - Piston Ring Groove
DESCRIPTIONSPECIFICATION LIMIT
First Ring 0.02 - 0.06 mm0.1 mm
Second Ring 0.02 - 0.06 mm0.1 mm
Clearance Specifications - Piston Ring End Gap
DESCRIPTIONSPECIFICATION LIMIT
First Ring 0.25 - 0.35 mm0.8 mm
Second Ring 0.40 - 0.55 mm0.8 mm
Oil Control Ring 0.10 - 0.40 mm1.0 mm
Clearance Specifications - Piston to Piston Pin
DESCRIPTION SPECIFICATION (mm)
Piston To Piston Pin 0.002 - 0.013
ENGINE UNIT REPAIR
02
02–221Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Disassembly
Piston Ring Removal
•Using a suitable ring expander, remove upper and intermediate piston rings.
• Remove the upper oil ring side rail, lower oil ring side rail and then oil ring expander from piston.
• Clean ring grooves of any carbon deposits.
1 - No. 1 Compression Ring
2 - No. 2 Compression Ring
3 - Oil Control Ring
4 - Piston Pin
5 - Connecting Rod
6 - Connecting Rod Bolt7 - Piston
8 - Piston and Connecting Rod Assembly
9 - Upper Connecting Rod Bearing
10 - Lower Connecting Rod Bearing
11 - Connecting Rod Cap
12 - Connecting Rod Nut
ENGINE UNIT REPAIR
LTSM020107
02–222Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine CAUTION:
Before removing the piston rings (1), check the
piston ring side clearance. Be careful to mark
the location of the piston rings if they are to
be reused.
Piston Pin Removal
•Using special tool MD-998780 (1) & (2), remove the piston pin for the pistons.
• Insert the tool push rod into the piston from the
notched side.
• Attach the tool guide into the piston and to the
push rod.
Connecting Rod & Piston Disassembly
•Connecting Rod & Piston Disassembly.
Remove the piston from the connecting rod.
ENGINE UNIT REPAIR
BESM020046
LTSM020180
BESM020041
02
02–223Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Inspection
Cylinder Bore
•Check the inner diameter of each cylinder bore (See Cylinder Bore Inspection in Section 02 Engine).
CYLINDER BORE
All Cylinders 86.50 - 86.53 mm
Ring Groove Side Clearance
•Check piston ring to groove side clearance.
Clean the ring slot using a suitable tool.
Measure piston ring to groove side clearance.
RING GROOVE SIDE CLEARANCE
DESCRIPTION SPECIFICATION LIMIT
First Ring 0.02 - 0.06 mm 0.1 mm
Second Ring 0.02 - 0.06 mm 0.1 mm
ENGINE UNIT REPAIR
BESM020063
LTSM020121
02–224Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Ring End Gap
•Wipe the cylinder bore clean. Insert ring and push down with piston to ensure it is square in the bore. The ring
gap measurement must be made with the ring posi-
tioned at least 13 mm from bottom of cylinder bore
and below the bottom of the oil ring travel where
the cylinder bore has minimal wear. Check gap with
feeler gauge.
RING END GAP
DESCRIPTION SPECIFICATION LIMIT
First Ring 0.25 - 0.35 mm 0.8 mm
Second Ring 0.40 - 0.55 mm 0.8 mm
Oil Control Ring 0.10 - 0.40 mm 1.0 mm
Piston Pin Clearance
•Check the diameter of the piston pin bore.
• Check the outer diameter of the piston pin.
ENGINE UNIT REPAIR
BESM020052
BESM020053
02
02–225Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine •Check the inner diameter of connecting rod (small end).
PISTON PIN CLEARANCE
Piston and Piston Pin 0.002 - 0.013 mm
Assembly
Piston Pin Installation
•Measure the following dimensions of each piston
(1), piston pin (2) and connecting rod (3).
Length of piston pin in hole (A).
Width of pin sockets (B).
Length of piston pin (C).
Width of small end of connecting rod (D).
• Put measured sizes above into following formula to
calculate L.
L=[(A-C)-(B-D)] / 2
• After inserting the push rod of the special tool into piston pin, install pipe A in the top of the push rod.
• Install forward marks of piston and connecting rod in the same direction.
• Lubricate the external diameter of piston pin with engine oil.
• Through pipe A, insert the push rod, piston pin and pipe component into piston pin hole from the side with the
forward mark.
• Screw on guide block B into guide pipe A to gain clearance between guide block A (2) and guide block B (1)
equal to the value of Value L (L=[(A-C)-(B-D)] / 2)
plus 3 mm.
• Keep the forward mark of piston upward. Install piston and connecting rod in tool base of piston pin installer.
ENGINE UNIT REPAIR
BESM020054
LTSM020111
LTSM020112
02–226Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine •Using a press, press the piston pin (1) in under pressure. When the pressure is less than standard value,
replace piston pin and piston component and/or
replace connecting rod.standard value: 7,350-
17,200 Newtons
• Check to make sure the piston can rotate freely.
Piston Ring Installation
NOTE :
The compression rings have an identification mark (1)
on the top of the ring.
Piston Ring Identification Marks:
•No. 1 Ring - 1R
• No. 2 Ring - 2R
When installing piston ring, keep the mark upwards and
towards the top of piston.
• Size markings of pistons shown as the following:
SIZE IDENTIFICATION
Standard None
Increase 0.50 mm 50
Increase 1.00 mm 100
CAUTION:
Do not use a piston ring expander to install the oil control rings.
Oil Control Ring Installation
•Install the main ring of oil control ring into oil ring groove.
NOTE :
There is no difference between the upper and lower oil control rings.
ENGINE UNIT REPAIR
LTSM020113
LTSM020116
02
02–227Chery Automobile Co., Ltd.