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Doosan DX22 - Camshaft; Camshaft Play; Checking and Measuring the Camshaft

Doosan DX22
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10. Cylinder Block/Head
146
Camshaft
Camshaft Play
EDX22190101
EDX22190102
1. Push the camshaft in the direction of the pulley.
2. Install a dial gauge on the camshaft gear.
3. Use a screwdriver to move the side of the camshaft gear
and measure the axial play of the camshaft.
4. If there is too much free play, use a thrust washer with a
different thickness to adjust it.
Checking and Measuring the Camshaft
1. Visual inspection
1) Check the cam surface visually for damage. If any minor
defects are found, polish them with an oilstone to correct
them. If the damage is severe, replace the part.
2. Cam lobe height
EDX22190050
1) Use a micrometer to measure the cam lobe height and
journal diameter.
2) The camshaft must be replaced if the measured value is
lower than the specified limit.
Item Minimum Maximum
End play
0.1 mm
(0.0039 in.)
0.85 mm
(0.0335 in.)
Dial
gage
Cam sensor hole
Reference value
Allowable
limit
Cam lobe
height (C)
Intake
55.356 mm
(2.1794 in.)
55.06 mm
(2.1677 in.)
Exhaust
56.378 mm
(2.2196 in.)
56.08 mm
(2.2079 in.)
Camshaft journal
diameter (A, B)
Ø69.91 ~ Ø69.94 mm
(Ø2.7524 ~ Ø2.7535
in.)
69.560 mm
(2.7386 in.)
C
A
III
III
A
B
B
D

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