Replacing Idler Shaft; Measuring Cam Lift; Measuring Camshaft Journal Diameter And Journal Bore Diameter - Mitsubishi S3Q2 Service Manual

3.5 Replacing idler shaft

To remove the idler shaft, use the idler shaft puller.
Note: When installing the idler shaft into the crankcase,
orient the idler shaft so that its oil hole faces the upper
crankcase.

3.6 Measuring cam lift

Measure the minor and major axes of cam to determine cam
lobe lift. If the lift is less than the limit, replace the camshaft
with a new one.
Item Nominal
Major axis
+0.1
Inlet 46.916
-0.3
+0.004
[1.8471
-0.012
Cam
lift
Major axis
+0.1
Exhaust 45.944
-0.3
+0.004
[1.8088
-0.012
3.7 Measuring camshaft journal diameter and
journal bore diameter
Measure the camshaft journal outside diameter and journal
bore diameter. If measured values exceeds the limit, replace
the camshaft with new one.
Item Nominal
ø 54 mm
Camshaft
No.1, 2
[2.13 in.]
journal
outside
ø 53 mm
No.3
diameter
[2.09 in.]
Clearance between
camshaft journal
outside diameter and -
camshaft journal
inside diameter
ø 54 mm
Camshaft
No.1, 2
[2.13 in.]
journal
inside
ø 53 mm
No.3
diameter
[2.09 in.]
Standard Limit
Major axis– Major axis–
Minor axis Minor axis
mm
= 6.684 mm = 6.184 mm
in.]
[0.2631 in.] [0.2435 in.]
Major axis– Major axis–
Minor axis Minor axis
mm
= 7.344 mm = 6.844 mm
in.]
[0.2891 in.] [0.2694 in.]
Standard
53.94 to 53.96 mm 53.90 mm
[2.1236 to 2.1244 in.] [2.1220 in.]
52.94 to 52.96 mm 52.90 mm
[2.0842 to 2.0850 in.] [2.0827 in.]
0.07 to 0.11 mm 0.15 mm
[0.0028 to 0.0043 in.] [0.0059 in.]
54.03 to 54.05 mm
[2.1272 to 2.1279 in.]
53.03 to 53.05 mm
[2.0878 to 2.0886 in.]
INSPECTION AND REPAIR OF BASIC ENGINE
Idler shaft puller
P/N:MH061077
D
1
D
2
Measuring
directions
D
1
D
2
Limit
Measuring
directions
Measuring camshaft journal diameter
Measuring
direction
-
-
Measuring camshaft buhing inside diameter
Replacing idler shaft
Measuring
locations
Measuring cam lift
Measuring
locations
6-11