Chery Tiggo. Manual — part 68
• Inspect the crankshaft axial clearance.
− If the crankshaft axial clearance exceeds the
maximum limit, replace the No.3 crankshaft
thrust bearing.
CRANKSHAFT AXIAL CLEARANCE
DESCRIPTION
SPECIFICATION
MAXIMUM LIMIT
Crankshaft
0.05 - 0.18 mm
0.25 mm
ENGINE UNIT REPAIR
BESM020076
CYLINDER HEAD UNIT REPAIR
Cylinder Head
Specifications
Torque Specifications
DESCRIPTION
TORQUE (N·m)
Cylinder Head Bolts
1st Step: Tighten the bolt to 78 N·m
2nd Step: Completely loosen the bolt
3rd Step: Retighten the bolt to 20 N·m
4th Step: Tighten the bolt an additional 90°
5th Step: Finish tightening the bolt an additional 90°
Cylinder Head Cover Bolts
11 N·m
Clearance Specifications
DESCRIPTION
SPECIFICATION (mm)
Cylinder Head Flatness
0.03
Intake Valve Deflection
0.02
Exhaust Valve Deflection
0.04
Spring Height
51
Disassembly
NOTE :
The following special tools are required to perform the repair procedure:
• MD-998772 - Valve Spring Compressor
• MD-998774 - Valve Oil Seal Installer
NOTE :
Replacement cylinder head comes complete with valves, seals, springs, retainers, keepers, tappets, and camshafts.
1. Remove camshaft.
2. Using the special tool MD-998772 (1), compress
the valve spring.
3. Remove the valve keeper, valve spring retainer
and valve spring.
4. Push the valve stem from the cylinder head and
remove the valve.
LTSM020092
02
5. Using special tool CH-20013 (1), Remove the valve
oil 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
7. Using valve spring compressor MD-998772 (1),
compress the valve springs.
8. Install the valve keepers.
9. Strike the valve stem lightly with a plastic hammer
after installation to verify proper assembly.
Camshaft
Specifications
Camshaft Specifications
DESCRIPTION
SPECIFICATION
MINIMUM LIMIT
Intake Cam Lobe Height
37.5 mm
37 mm
Exhaust Cam Lobe Height
36.99 mm
36.49 mm
CYLINDER HEAD UNIT REPAIR
LTSM020092
02
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст