TM-9-2815-213-34
ENGINE, DIESEL, WITH ACCESSORIES CUMMINS MODEL V8-300 (2815-910-8217)
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL (INCLUDING DIRECT SUPPORT AND GENERAL SUPPORT REPAIR PARTS LIST AND DEPOT MAINTENANCE ALLOWANCES)
FEBRUARY 1972
TM-9-2815-213-34 - Page 97 of 192
C2,
TM 9-2815-213-34
Fig.
Ref.
Point of Measurement
New Dimensions
Wear Limits
No.
Letter
(inches)
(inches)
c.
Camshaft Gear (para 3-32).
3-108.
f
Inside diameter of gear .
...........................................................
1.7980 to 1.7985
*
g
Outside diameter of shaft.
........................................................
1.7985 to 1.7990
g
Gear to shaft clearance.
...........................................................
PRESS FIT
h
Camshaft to crankshaft backlash.
............................................
0.006 to 0.009
0.009
j
Camshaft and clearance .
.........................................................
0.007 to 0 001
0.011
d.
Air Compressor Drive Gear (para 3-9),
3-108.
k
Inside diameter of gear .
...........................................................
12885 to 1.2890
*
I
Outside diameter of shaft.
........................................................
12890 to 12895
Gear to shaft clearance.
...........................................................
PRESS FIT
m
Gear to camshaft gear backlash .
.............................................
0.006 to 0.009
0.009
Figure 3-109.
Oil pressure regulator and oil pump-points of measurement.
a Valve Spring Measurements.
3-109.
a
Free spring length (approx.).
..........................................................
3.410
*
a
Compressed length (at valve opening) (Force 45 Ibs.).
.................
2.125
a
Compressed length (at max.
valve opening) (Force of 35 Ibs.).
...
71.438
b.
Oil Pump
3-109
b
Pump gear(s) outside diameter.
.....................................................
2.399
to
2.400
2397
c
Shifts (3) outside diameter .
............................................................
0.8745 to 0.8750
0.8740
d
Bushings (4) inside diameter .
........................................................
0.8770 to 0.8775
0.8785
e
Gear pockets (2) inside diameter.
..................................................
2.4070 to 2.4090
2.4105
Gear pockets (2) inside depth.
.......................................................
12490 to 12510
1.252
3-183.
cylinder Head
(para 3-66)
a.
Valves,
Guides and Valve Seats.
3-110.
a
Outside diameter of valve stem .
.................................................
0.4500 to 0.4512
0.4490
b
Inside diameter of valve guide.
...................................................
0.4525 to 0.4532
0.4545
c
Valve guide protrusion .
...............................................................
695 to 0.710
*
d
Intake valve seat insert thickness.
..............................................
02580 to 0.2200
*
e
Exhaust valve seat insert thickness.
...........................................
0.02180 to 0.820
*
3-110.
f
Swirl plate thickness (intake) .
.....................................................
0.0200 to 0.0210
*
c
Head counterbore inside diameter 0 (std) .
.................................
1.995 to 2.0005
*
ad/ae Angle of seating face-valve and insert seat.
...............................
30 Degrees
*
c
Valve seat width.
.........................................................................
0.1250
g
Valve springs.(5340-082-0126) .
.................................................
0.0780
Free length.
.................................................................................
2.090
Load Length: Valve open-1.317.
.................................................
161 to 179 Ibs.
155 Ibs.
Number of coils.
..........................................................................
6’/.
.
3-68
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