length CHERY TIGGO 2009 Service Repair Manual

Downloaded from www.Manualslib.com manuals search engine 4. Using valve spring compressor CH-20018 (1), com-press the valve springs.
5. Install the valve keepers.
6. Strike the valve stem lightly with a plastic hammer after installation to verify proper assembly.
Valve Springs
Specifications
Valve Spring Specifications
DESCRIPTION SPECIFICATION (mm)
Spring Free Length 47.7
Spring Height At 620 Newtons Of Pressure 32.0
Disassembly
NOTE :
The following special tools are required to perform the repair procedure:
•CH-20011 - Valve Seal Installer
• CH-20012 - Valve Stem Seal Installer Guide
• CH-20013 - Valve Seal Remover
• CH-20017 - Valve Keeper Installer
• CH-20018 - Valve Spring Compressor
1. Using the special tool CH-20018 (1), compress the valve springs.
CYLINDER HEAD UNIT REPAIR
BESM020067
BESM020067
02
02–73Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 2. Remove the valve keeper (1), valve spring retainer(2).
3. Remove the valve springs (3) from the cylinder head.
Inspection
•Whenever valves have been removed for inspection, reconditioning or replacement, valve springs should be
tested for correct load.
• Discard the springs that do not meet specifications.
• The following specifications apply to both intake
and exhaust valve springs.
VALVE SPRING LENGTH/HEIGHT
Spring Free Length 47.7 mm
Spring Height At 620 Newtons Of Pressure 32.0 mm
If it is not within specifications, replace the valve spring.
CYLINDER HEAD UNIT REPAIR
VISM080040
BESM020072
02–74Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 4. Using valve spring compressor CH-20018 (1), com-press the valve springs.
5. Install the valve keepers.
6. Strike the valve stem lightly with a plastic hammer after installation to verify proper assembly.
Valve Springs
Specifications
Valve Spring Specifications
DESCRIPTION SPECIFICATION (mm)
Spring Free Length 47.7
Spring Height At 620 Newtons Of Pressure 32.0
Disassembly
NOTE :
The following special tools are required to perform the repair procedure:
•CH-20011 - Valve Seal Installer
• CH-20012 - Valve Stem Seal Installer Guide
• CH-20013 - Valve Seal Remover
• CH-20017 - Valve Keeper Installer
• CH-20018 - Valve Spring Compressor
1. Using the special tool CH-20018 (1), compress the valve springs.
CYLINDER HEAD UNIT REPAIR
BESM020067
BESM020067
02
02–146Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 2. Remove the valve keeper (1), valve spring retainer(2).
3. Remove the valve springs (3) from the cylinder head.
Inspection
Inspect the valve springs for the following:
•Whenever valves have been removed for inspec-
tion, reconditioning or replacement, valve springs
should be tested for correct load.
• Discard the springs that do not meet specifications.
• The following specifications apply to both intake
and exhaust valve springs.
VALVE SPRING LENGTH/HEIGHT
Spring Free Length 47.7 mm
Spring Height At 620 Newtons Of Pressure 32.0 mm
If it is not within specifications, replace the valve spring.
CYLINDER HEAD UNIT REPAIR
VISM080040
BESM020072
02–147Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Inspection
1. Inspect the automatic tensioner for any leaks. Replace the tensioner if any leaks are found.
2. Inspect the automatic tensioner for signs of abra-sion at the end of the rod. Replace the tensioner if
any abrasions are found.
3. Inspect the length of the rod. If the rod length does not comply with the standard length, replace the
tensioner (standard rod length is 12 mm).
4. Using a calibrated force, press the end of the rod using 98 - 196 N·m and measure the rod displace-
ment. If the rod displacement is 1 mm larger than
the standard, replace the tensioner (standard mea-
surement is ≤1 mm).
5. Assemble the automatic tensioner with a soft jawed vise (1).
CAUTION: Use an appropriate pad (3) to protect
the tensioner bolt (2) from the jaws of the vise.
6. Rotate the handle of the vise to push the rod of the automatic tensioner into the tensioner. If the rod is
easy to push in, replace the automatic tensioner.
The rod should have some resistance when you
push the rod into the tensioner.
ON-VEHICLE SERVICE
LTSM020061
LTSM020214
LTSM020062
02
02–197Chery 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 3. Using a hammer handle or similar tool, push thepiston and connecting rod assembly (1) out
through the cylinder head side of the engine block.
NOTE: Before removing the piston and connecting
rod assembly, check the connecting rod side
clearance.
4. Remove the connecting rod bearings. CAUTION: When removing the connecting rod
side bearings, note the installation position.
Keep them in the correct order.
Inspection
Bearing Radial Clearance
•Check the radial clearance of connecting rod bearing.
CONNECTING ROD RADIAL CLEARANCE
Radial Clearance 0.016 - 0.051 mm
Bearing Oil Clearance (Plastigauge)
•Check the oil clearance of the connecting rods and crankshaft.
Clean all engine oil off of the connecting rod bearing and the crankshaft journal.
Cut the plastigauge into lengths as wide as the crankshaft journal.
Lay the plastigauge across the crankshaft
journal.
Carefully install the connecting rod cap.
Torque the connecting rod cap nuts to 20 N·m
Carefully disassemble the connecting rod cap.
Use the measuring rule imprinted on the plas- tigauge package to measure the width of the
widest part of the plastigauge.
ENGINE UNIT REPAIR
BESM020044
BESM020045
LTSM020122
02–230Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Inspection
Crankshaft Axial Clearance
•Check the axial clearance of the crankshaft.
CRANKSHAFT AXIAL CLEARANCE
DESCRIPTION SPECIFICATION MAXIMUM LIMIT
Crankshaft 0.05 - 0.18 mm 0.25 mm
Crankshaft Bearing Oil Clearance (Plastigauge)
•Check the oil clearance of the crankshaft.
Clean all engine oil off of the crankshaft jour-
nals.
Cut the plastigauge into lengths as wide as the crankshaft journal.
Lay the plastigauge across the crankshaft journal.
Carefully install the main bearing cap.
Torque the main bearing cap to the specified torque.
Carefully disassemble the main bearing cap.
Use the measuring rule imprinted on the plas- tigauge package to measure the width of the
widest part of the plastigauge.
ENGINE UNIT REPAIR
BESM020076
BESM020077
02–236Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine •Install the new valve guide from the top of the cylinder head as shown in the illustration.
Intake valve guide length: 45.5 mm
Exhaust valve guide length: 50.5 mm
CAUTION:
The intake and exhaust valves are different
lengths, use care when replacing the valve
guides to install the correct valve guide.
•Install the valve guide to the specified height (1) of
14 mm.
• After installing the valve guide, insert the new valve and check for smooth movement.
Valve Seats
•Before machining the valve seat, check the clear-
ance between the valve guide and the valve stem.
If the clearance is excessive, repair the valve and
valve guide if necessary before machining the valve
seat.
• Repair the width and angle of the valve seat until
the valve seat meets specified values.
• After repairing the valve seat, use valve lapping
compound to lap the valves and seats in pairs.
Valve Seat Replacement
•Cut out a portion of the original valve seat and
remove the valve seat from the cylinder head.
• Select the replacement valve seat according to the
outer diameter of the enlarged valve seat.
REPLACEMENT VALVE SEAT SIZES
Intake valve seat Enlargement size 0.30 mm
34.435 - 34.455 mm
Enlargement size 0.60 mm 34.735 - 34.755 mm
Exhaust valve seat Enlargement size 0.30 mm
31.935 - 31.955 mm
Enlargement size 0.60 mm 32.235 - 32.255 mm
CYLINDER HEAD UNIT REPAIR
LTSM020106
LTSM020103
LTSM020104
02
02–251Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine NOTE :
Before installing the valve seat, heat the cylinder head to the temperature of about 250°, or cool the valve seat in
liquid nitrogen in order to install the valve seat.
•Machine the new valve seat and valve to proper specifications.
Assembly
1. Install the valves into the cylinder head (larger diameter on intake side).
2. Using special tool MD-998774, install the new valve oil seal.
3. Install the valve springs.
4. Install the valve spring retainers.
5. Using valve spring compressor MD-998772 (1),
compress the valve springs.
6. Install the valve keepers.
7. Strike the valve stem lightly with a plastic hammer after installation to verify proper assembly.
Valve Springs
Specifications
Valve Spring Specifications
DESCRIPTION SPECIFICATION LIMIT
Spring Free Length 51.0 mm50.0 mm
Spring Center Line ≤2.0° ≤4.0°
CYLINDER HEAD UNIT REPAIR
LTSM020092
02–252Chery Automobile Co., Ltd.