Chery Fora (Elara A520). Manual — part 42
27
2. Maintenance
2.1
Replace intake manifold, CBR control
valve plate, delivery pipe, oil injector
2.1.1
Needed tools and auxiliary materials
Ratchet wheel, ratchet rod, 10# sleeve and
crosshead screwdriver
2.1.2
Process of removal
1)
Put the ignition key at the OFF position.
2)
Loosen the oil injector plug.
3)
Loosen the electric plug of CBR control
valve,
and
dismantle
the
bolts
connecting the engine oil dipstick and
intake manifold.
4)
Loosen the clamp at the connection end
of air intake hose and valve body.
5)
Dismantle the connecting bolts of valve
body, and take out the valve body.
6)
Loosen the joint of oil intake pipe.
7)
Dismantle the fixed nut of intake
manifold, and remove the intake
manifold.
28
2.1.3
Installation steps
The installing steps are reverse to those for
removal.
Note: Pay more attention to the position of
seal ring. There is a slot at the arrow pointing
position.
2.2
Replace camshaft, bearing bushing,
valve and valve oil seal
2.2.1
Needed tools and auxiliary materials
Special tool for valve oil seal, engine
lubricant, a set of sleeve tools and one
adjustable wrench, special timing tool, a set
of allen wrenches.
2.2.2
Removal
1)
Dismantle the dynamo belt (detailed
methods are shown in the “removal of
dynamo belt ”).
2)
Dismantle the timing belt (detailed
method are shown in the “ replacement
of engine timing belt and timing
calibration”.
3)
Dismantle the engine valve chamber
cover.
4)
Clamp the engine timing special tool,
the camshaft tool into the camshaft slot,
and use bolts to fix it.
Camshaft Tool
29
5)
Use torque wrench to remove the air
intake and exhaust camshaft pulleys.
6)
Dismantle the back cover of timing belt.
7)
Dismantle the air intake and exhaust
camshaft bearing caps in turn, and place
them well in order.
Note: The second, third, fourth and fifth
camshaft bearing caps are marked with I1, I2,
I3, I4 (E1, E2, E3, E4), which stands for the
corresponding bearing cap of 1, 2, 3, 4
cylinder respectively.
8)
Take out the camshaft and hydraulic
tappet.
9)
Dismantle the valve spring. Use special
tool to dismantle the valve spring.
10) Use special valve oil seal tool to
dismantle the old valve oil seal.
30
2.2.3
Check
1)
Check the valve spring.
Use caliper rule to check the free length of
valve spring and the length specified in
special pressure.
Standard
Value(mm)
Limit
value(mm)
Free length
47.7
Length of
620N
32
Replace with the new valve spring if the
measured value exceeds the limit value.
2)
Check camshaft
Use micrometer caliper to measure the
diameter of camshaft.
Standard
value(mm)
Limit value
(mm)
Diameter
0.15
0.20
Replace with the new camshaft if the
measured value exceeds the limit value.
3)
Check the camshaft
Use micrometer caliper to measure the length
of camshaft.
Standard
value (mm)
Limit value
(mm)
Intake
camshaft
0.15
0.20
Exhaust
camshaft
0.15
0.20
Replace with the new camshaft if the
measured value exceeds the limit value.
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст