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Case Series C - Section 22: Cylinder Head and Valves; Cylinder Head and Valve Specifications

Case Series C
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Section
22
CYLINDER HEAD AND VALVES
2678, 301 B, 3368D, 336BDT AND 401 B
DIESEL ENGINES
SPECIFICATIONS
CYLINDER HEAD
Warpage
Maximum Limit
Including Wear
. . . . . . .005"
INT AKE AND EXHAUST VALVE GUIDES
Length . . . . . . . . . . . . . . . . . . 3. 219"
O.D. . . . . . . . . . . . . . . . . . . . . 7515"to . 7510"
I.D. (Installed and reamed) . . . . . . . . . . . . . . . .4045" to .4055" . . . . . .001"
Protrusion above cylinder head. . . . . . . . . . . . . .953"
EXHAUST VALVE
Tappet clearance (COLD). . . . . . . . . . . . .025"
Tappet clearance (HOT) . . . . . . . . . . . .020"
Face angle . . . . . . . . . . . . . . . . . . . . . . . 45°
Face run-out. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .002"
O.D. of head (267B and 401B) . . . . . . . . . . . . . 1.455" to 1.445"
O.D. of head (336BD and 336BDT) . . . . . . . . . . 1.755" to 1.745"
O.D. of head (301B) . . . . . . . . . . . . . . . . 1.567" to 1.557"
O.D. of stem end .402" to .403" . .002"
O.D. of taper 4.26'75i, froin' st;m end. : : : : : : : : : : : .401"
to .402" . .002"
Length (301B) . . . . . . . . . . . . . . . . 6.4385" to 6.4175"
Length (336BD and 336BDT) . . . . . . . . . . 6.4405" to 6.4195"
Length (267B and 401B) . . . . . . . . . . . . . . 6.4235" to 6.4025"
Insert seat angle . . . . . . . . . . . . . . . . . 44°
Seat contact width .0800" to .1000"
. . . . . . . . . . . . . . . . . . . . . .
Seat run-out . .002"
Insert height . : : : : : : : : : : : : : : : : : : : : : : : : : · ."3i6°" 't~ :3i3
11
O.D. of insert (401B. and 267B) . . . . . . . . . . . . 1.635" to 1.634"
O.D. of insert (301B) . . . . . . . . .
1. 723" to 1. 722"
O.D. of insert (336BD and 336BDT) . . . . . 1.9465" to 1.9455"
I.D. of insert (267B and 401B) . . . . . . . . . . 1.2676"
to 1.2736"
I.D. of insert (301B). . . . . . . . . . . . . . 1.409" to 1.403"
I.D. of insert (336BD and 336BDT) . . . . . 1.571" to 1.577'·'
Rae. 9-79392
CASE CORPORATION
PRINTED IN USA

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