Hatz 2-4L30, Workshop Manual

Page: 138 / 174

4
L / M . . / 07.96
Repair data
Cylinder head L 41 L 31, M 31 L 30 H .L 30
M 41 L 40, M 40
Gap mm 0.85-0.95 1.0 - 1.1 1.0 - 1.1 1.0 - 1.5
Gasket at cylinder head mm 0.7 - 0.8 - 0.9 - 1.0 - 1.1 -1.2 1.2
Shim washers
1)
mm – – – 0.1 - 0.2
Valve clearance, cold (20 ± 10°C) mm 0.10 0.10 0.10 0.40
2)
Valve stem
∅
mm 8.96
-0.015
Wear limit
∅
mm 8.85
Inlet valve head
∅
mm 43.1 -0.3 40.1 -0.3
Exhaust valve head
∅
mm 39.1
-0.3
35.1
-0.3
Recess of valve head max. mm 0.15 1.70 1.70 1.70
min. mm 0.00 0.85 0.85 0.85
outer
∅
mm
15
+0.046
+0.038
Valve guide
inner
∅
mm
9H6
+0.009
0
Wear limit innen
∅
mm 9.05
Bore in cylinder head
∅
mm
15
+0.006
-0.012
Pressing-in force N 1000
Valve guide projection mm 20.5 23.5 (l=70.5)
20.5 14.5
20.5 (l=67.5)
Valve seat angle 45°
1)
As required, between cylinder and crankcase
2)
If steel pushrods are used: 0.20 mm