JAC HFC4DA1-2C - Page 13

Maintenance manual for sunray hfc4da1-2c china-IV diesel engines
14
No. Name Standard Size (mm)
Fitting
nature
Assembly
Clearance for
New Engine
(mm)
Wear Limit
(mm)
Name Standard Size (mm)
Fitting
nature
Assembly
Clearance for
New Engine
(mm)
Wear Limit
(mm)
13
Protrusion height of
cylinder sleeve
0～０.08
14
Axial run-out clearance of
camshaft
Clearance
0.05～0.13
0.20
Cam height of camshaft 42.02±0.05 0.38
15
Inside diameter of camshaft
bush
025.0
0
50
+
Φ
Clearance
0.025～0.080
0.12
Diameter of camshaft
journal
025.0
055.0
50
−
−
Φ
16 Deflection of cam bush 0.02 0.1
17
Outside diameter of piston
pin
0
005.0
34
−
Φ
Clearance
0.002～0.015
0.03
Piston pin bore
010.0
002.0
34
+
+
Φ
18
Thickness of connecting
rod large end
0
07.0
33
−
Φ
Clearance
0.175～0.320
0.35
Opening of crankshaft
connecting rod journal
250.0
175.0
33
+
+
Φ
19
Clearance of intake and
exhaust valves (cold state)
Clearance
0.3～0.4
20
Main journal
068.0
086.0
70
−
−
Φ
Clearance
0.031～0.066
0.11
Main bush bore (after
assembly)
003.0
033.0
70
−
−
Φ
21
Outside diameter of piston
pin
0
036.0
34
−
Φ
Clearance
0.008～0.026
0.05
Inside diameter of
connecting rod bush
020.0
038.0
34
+
+
Φ
22
Crankshaft connecting rod
journal
070.0
085.0
53
−
−
Φ
Clearance
0.029～0.069
0.1
Connecting rod bush bore
(after assembly)
016.0
041.0
53
−
−
Φ
23
Grouping of piston outside
diameter
Grouping
clearance
0.053～0.075
Group A
92.957～92.968
Group B
92.968～92.979
Group C
92.979～92.990
Group D
92.990～93.001