SSANGYONG Rexton Y200 Manual page 380

SSANGYONG Y200
DIESEL ENGINE MECHANICAL 1B3-111
8. Turn over the cylinder head.
9. Remove the tensioning head (4) and valve seat
ring (2) with drift (14 mm) and removal tool.
10. Clean the basic bore of valve seat ring.
YAD1BH80
11. Measure the basic bore diameter (D2) and outer
diameter (D) of the new valve seat ring (standard
size).
12. Calculate the overlap value 'U' (D - D2).
Overlap Valve 'U'
Example) Measured value D
YAD1BH90
13. Clamp the cylinder head with clamping device.
14. Machining basic bore for valve seat ring (repair
size).
Notice: Maintain minimum value of 'B'.
- Machine the basic bore.
Limit
Max. D2
YAD1BHA0
- Measure machined basic bore and outer
diameter 'D' of valve seat ring (repair size).
- Measure the overlap 'U'
Overlap 'U' (D - D2)
Example) Measured value D
YAD1BHB0
0.068 - 0.100 mm
= 37.100 mm
Measured value D2 = 37.010 mm
Overlap value 'U' = 0.090 mm
If overlap value 'U' is out of standard,
machine the basic bore for the valve
seat ring.
Intake 40.516 mm
Exhaust
37.516 mm
133.4 mm
Min. B
0.068 - 0.100 mm
= 37.600 mm
Measured value D2 = 37.480 mm
Overlap U = 0.120 mm
The basic diameter D2 must be
machined by 0.020 mm in order to get
the required overlap value.