| International Engine >> NEW ROCKER ARM SHAFTS |
New Rocker Arm Shaft Assembly Released On
Navistar (International) 3.2, 5.0, 5.6 & 6.4L
(196, V-304, V-345 & V-392 CID) Engines
A new rocker arm shaft assembly is now available for the 196 and small V-8 engines. The new shaft assembly has 4 less rocker arm shaft support brackets per cylinder head than the previous shaft assembly.
The four support brackets and their mounting bolts are replaced by springs, new shorter nylon patch bolts and hardened flat washers to seal the previous support bracket mounting bolt holes.
This change was incorporated into production starting with the following engine serial numbers:
Engine Model Starting Engine S/N
V-304, 345, 392 1492201
V-304A, 345A 280934
4-196 59231
The new rocker arm shaft assembly is serviced in a kit. The .312- 18 UNC x .500 bolts with nylon patches which are included should be torqued to 155-190 in.lbs. (18-20Nm).
The AERA Technical Committee
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