Yanmar 4LHA-HTP Operation Manual page 353

Chapter 2 Basic Engine
8. Camshaft and Tappets
(3) Measure the camshaft outer diameter and the camshaft
bearing inner diameter. Replace if they exceed the wear
limit or are damaged.
Camshaft journal outside dia.
Camshaft journal bushing inside dia.
Cylinder block bearing inside dia.
Oil clearance
(4) Check the camshaft for circle runout
Support both ends of the camshaft with V-blocks,
place a dial gauge against the central bearing areas and
measure the circle runout. Replace if excessive.
4LHA-HTE/-HTZE
-HTP/-HTZP
Camshaft
119171-14010
P/N
Gear case side
56.91 - 56.94
(2.2406-2.2417)
56.98 - 57.05
(2.2433-2.2461)
0 04 - 0 14
(0.0016-0.0055)
4LHA-STE/STZE
-STP/STZP
-DTE/DTZE
-DTP/DTZP
. 119195-14010
2-33
Standard
Flywheel side
Intermediate
56.91 - 56.94
56.91 - 56.94
(2.2406-2.2417)
(2.2406-2.2417)
-
57.00 - 57.03
57.00 - 57.03
(2.2441 - 2.2453)
(2.2441 - 2.2453)
0 . 0 6 - 0 . 1 2
0 . 0 6 - 0 . 1 2
(0.0024 - 0.0047)
(0.0024 - 0.0047)
Standard
0.02 or less
Camshaft circle
(0.0008)
runout (TIR)
.4LHA Serie:
mm (in.)
Wear limit Wear limit
56.80
(2.2362)
57.10
-
(2.2480)
57.10
(2.2480)
mm(in.)
limit
0.05
(0.0020)