Chery Tiggo. Manual — part 24
3. Using the special tool CH-20018 (1), compress the
valve spring.
4. Remove the valve keeper (1), valve spring retainer
(2) and valve spring (3).
5. Push the valve stem from the cylinder head and
remove the valve (4).
6. Using special tool CH-20013 (1), remove the valve
oil seal.
7. Remove the valve guide.
8. Remove the spark plugs.
CYLINDER HEAD UNIT REPAIR
BESM020067
VISM080041
LTSM020225
Inspection
• Cylinder head must be flat within 0.04 mm.
• Inspect camshaft bearing journals for scoring.
• Remove carbon and varnish deposits from inside of
valve guides with a valve guide cleaner.
• Verify the valve tappets move freely in their bores,
and that they have been rotating.
• Check the valve guide height.
Assembly
1. Install new valve guide if necessary.
2. Install new valve seat if necessary.
3. Using special tool CH-20011 (1) and CH-20012 (2),
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
BESM020068
LTSM020224
02
7. Using valve spring compressor CH-20018 (1), com-
press the valve springs.
8. Install the valve keepers.
9. Strike the valve stem lightly with a plastic hammer after installation to verify proper assembly.
10. Install valve tappets in the head.
11. Install the camshafts.
Installation Notes:
• Coat the valve oil seal with engine oil.
Camshaft
Specifications
Camshaft Specifications
DESCRIPTION
SPECIFICATION (mm)
Intake Cam Lobe Height
37.15
Exhaust Cam Lobe Height
37.05
Journal #1 Outer Diameter
31.934 - 31.95
Journal #2, #3, #4, #5, Outer Diameter
23.947 - 23.96
Cam Bearing #1 Inner Diameter
32 - 32.025
Cam Bearing #2, #3, #4, #5, Inner Diameter
24 - 24.021
Journal #1 Clearance
0.05 - 0.091
Journal #2, #3, #4, #5 Clearance
0.04 - 0.074
Intake Camshaft Axial Clearance
0.15 - 0.20
Exhaust Camshaft Axial Clearance
0.15 - 0.20
CYLINDER HEAD UNIT REPAIR
BESM020067
Disassembly
1. Remove the camshaft bearing cap bolts.
NOTE: Equally loosen camshaft bearing cap bolts
in several steps.
2. Remove the camshaft bearing caps and place them in proper order.
NOTE: The camshaft bearing caps are marked for identification.
3. Remove the camshafts and then remove the camshaft seals.
Inspection
• Measure the camshaft cam lobe height.
• If wear is beyond the limit, replace the camshaft.
CAMSHAFT CAM LOBE HEIGHT
Intake Cam Lobe Height
37.15 mm
Exhaust Cam Lobe Height
37.05 mm
CYLINDER HEAD UNIT REPAIR
BESM020035
BESM020037
02
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст