Komatsu 4D98 Series Shop Manual page 177

12. Service Standards
(1.4) Rocker arm and shaft
Inspection item
I
Reference
Standard
Limit
page I
Arm shaft hole diameter mm 18.50 - 18.52 18.57
Shaft outside diameter mm 18.47 - 18.49 18.44 4-8
Clearance mm 0.01 ." 0.05 0.13
(1.5) Push rod
Bend
inspection item
mm
Standard
Limit
-
0.03
Reference
page
4-8
(2)
Gear train and camshaft
(2.1) Camshaft
Inspection item Standard Limit
Reference
page
Side gap mm 0.05 - 0.20 0.30 4-13
Bending (l/2 the dial gage reading) mm 0 - 0.02 0.05
Cam height mm 4TNE94.98 42.435 - 42.565 42.185 4-14
4TNE106 (T) 49.435 - 49.529 49.185
Shaft ouside diameter
l
Metal outside diameter mm
12-3