Section
23
ENGINE BLOCK ASSEMBLIES
251 B AND 301 B SPARK IGNITION
AND
2678, 301 B, 3368 AND 336BDT DIESEL ENGINES
TABLE OF CONTENTS
Specifications ........................................................................................................................... 23-2
Special Torques . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 23-7
Engine Lubricating Oil and Cooling Systems .......................................................................... 23-8
Engine Oil Filter and Heat Exchanger ................................................................................... 23-9
Flywheel, Housings and Front Mounted Pump Bracket ........................................................ 23-10
Flywheel, Seal Retainer and Front Mounted Oil Pump ......................................................... 23-12
Engine Block, Oil Pan, Seal Retainer and
Balancer with Oil Pump ..................................................................................................... 23-16
Front Mounted Oil Pump ....................................................................................................... 23-20
Diesel Engine Timing Gear Cover ......................................................................................... 23-22
Spark Ignition Timing Gear Cover ........................................................................................ 23-24
Camshaft, Bushings, Lifters and Timing Gears . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. .. . . .. 23-26
Crankshaft, Pistons, Sleeves and Connecting Rods
Removal, Disassembly and Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23-30
Cylinder Sleeves - Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23-32
Honing . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23-33
Deglazing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23-34
Pistons and Cylinder Sleeves - Inspection (Continued) .......................................................... 23-35
Crankshaft, Bearing Liners and Crankshaft Balancer Gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 23-36
Piston, Connecting Rod and Piston Rings - Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . 23-38
Locating Top Dead Center ..................................................................................................... 23-42
NOTE: Refer to Section 2047 for the balancer servicing.
CASE CORPORATION
Rae 9-79403
PRINTED IN U.S.A.