TM 9-2320-266-34
PART THREE
REPAIRS ON THE BENCH
CHAPTER 11
REBUILDING THE ENGINE
Section 1. INTRODUCTION
only the portions of the disassembly sequence that are neces-
11-1. General.
sary to gain access to that component.
The procedures in this chapter are organized into the
proper sequence for completely disassembling, inspecting,
11-2. Specification.
and reassembling the engine when it has been removed from
Engine specifications, including adjustment set-points, are
the truck. For replacement of individual components, use
given in table 11-1.
Table 11-1. Engine Specifications
318-1
Engine designation
90 "V"
.....
Type . . . . . . . . . . . . . . .
....8
.
Number of cylinders. . . . . . . . . .
.
. . . . 3.91"
Bore . . . . . . . . . . . . . . .
.
. . . . 3.312"
Stroke . . . . . . . . . . . . . .
. . . 318 cu in
.
Piston displacement . . . . . . . . . .
.
. . . . 8.6 to 1
Compression ratio . . . . . . . . . .
. . . . . 100 psi
Minimum compression pressure . . . . . .
(with engine warm, all spark plugs removed,
wide-open throttle, cranked with fully-charged
battery)
40 psi
Maximum compression variation between cylinders . .
1-84-3-6-5-7-2
Firing order . . . . . . . . . . . . . . . . .
2 before "0"
Ignition timing . . . . . . . . . . . . . . . .
1-3-5-7
Cylinder numbering - left side . . . . . . . . . . .
246-8
right side . . . . . . . . . . .
Camshaft
. Silent chain
Drive . . . . . . . . . . . . . . . . .
.
. 0.005"
Maximum allowable bearing clearance . . . . . .
.
. Thrust plate
Thrust taken by . . . . . . . . . . . . .
.
. 0.002"
Minimum end play . . . . . . . . . . . .
.
. 0.010"
Maximum allowable end play . . . . . . . . .
.
. 1.998"-1.999"
Journal diameter no. 1 . . . . . . . . . . .
.
. 1.982"-1.983"
no. 2 . . . . . . . . . . .
.
. 1.967"-1.968"
no. 3 . . . . . . . . . . .
.
. 1.951" -1.952"
no. 4 . . . . . . . . . . .
.
. 1.5605"-1.5615"
no. 5 . . . . . . . . . . .
.
Connecting rod journals
2.124"-2.125"
Diameter . . . . . . . . . . . . . . . . .
0.001"
Minimum allowable out-of-round . . . . . . . .
0.001 "
Maximum allowable taper . . . . . . . . . . .
11-1
