Appendix A Fit Clearances For Main Parts Of Diesel Engine - Baudoulin 4M11G Maintenance Manual

Maintenance Manual of 4M11 Series Diesel Engine For Land Power Generators

Appendix A Fit Clearances for Main Parts of Diesel Engine

SN.
1 Main bearing clearance
2 Connecting rod bearing clearance
3 Crankshaft endplay
4 Axial clearance of connecting rod plane
5 Clearance between connecting rod small
6 Clearance between piston pin boss
7 Clearance between
Cold state piston ring
8 Working opening
End clearance of piston
9
10 Valve bottom sink in cylinder head
11 Protrusion of cylinder liner top above
12 Camshaft axial clearance
13 Camshaft bearing clearance
14 Clearance between tappet and value
15 Gap between piston top and cylinder
16 Protrusion of piston top above top plane
Valve
17
Clearance between rocker arm and
18
Clearance of secondary
19
Backlash between mating teeth of timing
20
(Reference value)
Item
end and piston pin
valve stem and
valve guide
1st ring
2nd ring
Oil ring
1st ring
ring in cold state
2nd ring
Oil ring
engine body top
tappet hole
head bottom surface (compression
clearance)
of cylinder block
Intake
clearance
(Cold state)
Exhaust
rocker arm shaft
Radial
balance
mechanism
Axial direction
gear and intermediate gear
Theoretical value (mm)
direction
111
0.08～0.11
0.07～0.10
0.04～0.25
0.30～0.50
0.03～0.08
0.003～0.015
0.03～0.06
0.35～0.55
0.75～1.05
0.3～0.6
0.06～0.095
0.05～0.085
1.0～1.45
0.05～0.10
0.10～0.29
0.04～0.08
0.006～0.035
0.88～1.11
0.25～0.57
0.18~0.25
0.28~0.35
0.016～0.052
0.03～0.07
0.20～0.40
0.07～0.24