2009 CHERY TIGGO check engine

Downloaded from www.Manualslib.com manuals search engine 3. Remove the connecting rod cap nuts.
4. Remove the connecting rod bearing cap.
5. 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.
6. Remove the connecting rod bearings. CAUTION: When removing the connecting rod
side bearings, note the installation position.
Keep them in the correct order.
ENGINE UNIT REPAIR
BESM020042
BESM020043
BESM020044
BESM020045
02
02–235Chery 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 CRANKSHAFT BEARING OIL CLEARANCE
Standard Clearance 0.02 - 0.04 mm
Maximum Clearance 0.1 mm
Crankshaft Main Journal Roundness
•The crankshaft main journals should be checked for
excessive wear, roundness and scoring. Limits of
roundness on any crankshaft main journals should
be held to 0.006 mm. Limits of roundness on any
crankshaft rod journals should be held to 0.006
mm. DO NOT nick crank pin or bearing fillets. Lim-
its of out of round on any crankshaft journals
should be held to 0.006 mm.
CRANKSHAFT MAIN JOURNALS
DESCRIPTION SPECIFICATION MAXIMUM LIMIT
Crankshaft Journal Roundness 0.006 mm0.006 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.
Before installing the main bearing bolts, clean the threads and oil the bolts with clean engine oil.
Crankshaft Main Bearings
•Perform the following when replacing the crankshaft main bearings:
Measure and record the external diameter of
the crankshaft main journals.
ENGINE UNIT REPAIR
BESM020075
LTSM020119
02
02–237Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 5. Using special tool CH-20013 (1), Remove the valveoil seal.
6. Remove the valve guide.
7. Remove the spark plugs.
Inspection
• Cylinder head must be flat within 0.03 mm.
• Inspect camshaft bearing journals for scoring.
• Remove carbon and varnish deposits from inside of
valve guides with a valve guide cleaner.
• Check the valve guide height.
Assembly
1. Install new valve guide if necessary.
2. Install new valve seat if necessary.
3. Using special tool MD-998774 (1), install the new
valve oil seal.
4. Install the valves into the cylinder head (larger diameter on intake side).
5. Install the valve springs.
6. Install the valve spring retainers.
CYLINDER HEAD UNIT REPAIR
LTSM020225
BESM020068 LTSM020094
02–242Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Camshaft
•Measure the camshaft cam lobe height.
• If wear is beyond the limit, replace the camshaft.
CAMSHAFT LOBE HEIGHT
DESCRIPTION STANDARD LOBE HEIGHT MINIMUM LOBE HEIGHT
Intake Cam Lobe Height 37.5 mm37 mm
Exhaust Cam Lobe Height 36.99 mm36.49 mm
Hydraulic Adjusters
CAUTION:
The hydraulic adjusters are a precision part. There should not be any dust or foreign matter on its
surface. Do not disassemble the hydraulic adjusters. It is required to use clean diesel oil to clean
the hydraulic adjusters.
•Soak the hydraulic adjusters in clean diesel oil.
• Using special tool MD-998442 (1) and MD-998441 (2), press the steel ball on the inside of the hydraulic
adjuster and remove all air by moving the plunger
up and down 4-5 times.
NOTE :
Use the special tool and check whether the plunger can
be pressed. If it is hard to press the plunger, the
hydraulic adjuster is normal. If it is easy to press the
plunger, repeat the previous procedure and then check
the hydraulic adjuster again. If the plunger is still loose,
the hydraulic adjuster should be replaced.
CAUTION:
After the hydraulic adjuster has been prepared, it should be kept erect to avoid the loss of diesel
oil.
CYLINDER HEAD UNIT REPAIR
BESM020037
LTSM020088
02
02–245Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 1. Using the special tool MD-998772 (1), compressthe valve springs.
2. Remove the valve keeper, valve spring retainer and valve spring.
3. Remove valves from the cylinder head.
Valves
• Clean all valves thoroughly and discard burned,
warped and cracked valves.
• Check valve seats and valve faces for damage.
• When reconditioning valves follow the specifications
outlined for both intake and exhaust valves.
• Measure valve deflection.
VALVE DEFLECTION LIMIT (DIAL GAUGE READING)
Intake Valve 0.02 mm
Exhaust Valve 0.04 mm
CYLINDER HEAD UNIT REPAIR
LTSM020092
BESM020066
02–248Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine •If it exceeds the limit, check valve to valve guide clearance (1) .
Measure valve stem diameter (2) and valve guide inner diameter (3).
Check that clearance is within specification.
If it exceeds the limit, replace valve or valve
guide.
VALVE TO VALVE GUIDE CLEARANCE
DESCRIPTION SPECIFICATION LIMIT
Intake Valve Clearance 0.020 - 0.050 mm 0.10 mm
Exhaust Valve Clearance 0.030 - 0.070 mm 0.15 mm
• Check the valve edge thickness and valve contact
area. Repair or replace the valve if necessary.
VALVE EDGE THICKNESS
DESCRIPTION SPECIFICATION LIMIT
Intake Valve Edge Thickness 1.0 mm0.5 mm
Exhaust Valve Edge Thickness 1.2 mm0.7 mm
CYLINDER HEAD UNIT REPAIR
LTSM020101
BESM020066
02
02–249Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine •Measure the total valve height (1). If the valve
height is less than the limit value, the valve should
be replaced.
VALVE HEIGHT
DESCRIPTION SPECIFICATION LIMIT
Intake Valve Height 112.30 mm111.80 mm
Exhaust Valve Height 114.11 mm113.61 mm
Valve Guides
•Check the clearance (1) between the valve guide
and the valve stem, if it exceeds the limit, check
valve to valve guide clearance.
Measure valve stem diameter (2) and valve
guide inner diameter (3).
Check that clearance is within specification.
If it exceeds the limit, replace valve or valve guide.
VALVE TO VALVE GUIDE CLEARANCE
DESCRIPTION SPECIFICATION LIMIT
Intake Valve Clearance 0.020 - 0.050 mm 0.10 mm
Exhaust Valve Clearance 0.030 - 0.070 mm 0.15 mm
Valve Guide Replacement
•Press the original valve guide out of the cylinder head.
• Ream the valve guide hole until the hole diameter is the size of the new enlarged valve guide to be installed.
CAUTION:
When replacing valve guides, do not use a new valve guide that is the same size as the original
valve guide.
Enlarge valve guide size 0.05 (11.05 - 11.068 mm)
Enlarge valve guide size 0.25 (11.25 - 11.268 mm)
Enlarge valve guide size 0.50 (11.50 - 11.518 mm)
CYLINDER HEAD UNIT REPAIR
LTSM020102
LTSM020101
02–250Chery Automobile Co., Ltd.