TM 9-6115-604-34
NAVFAC P-8-633-34
Figure 9-22. Injection Timing Diagram
(g)
Rotate the crankshaft back and forth to assure the piston is precisely at TC on the compression
stroke (1, Figure 9-22). TC is indicated by the maximum clockwise position of the piston travel
indicator pointer. Turn the piston travel indicator face to align the zero with the pointer. Lock the
face with the thumbscrew.
NOTE
Both indicators will move in the same direction when the piston is on the compression stroke.
f the push tube indicator does not move in the same direction as the piston indicator, rotate
the crankshaft one complete revolution to place the piston on the compression stroke and
repeat step (g), above.
(h)
Rotate the crankshaft in the direction of the engine rotation (2, Figure 9-22) approximately 90
degrees ATC (after top center). Turn the push rod travel indicator face to align the zero with the
pointer. Lock the face with the thumbscrew.
(i)
Rotate the crankshaft opposite the direction of rotation through TC to 45 degrees BTC (before top
center) (3, Figure 9-22).
(j)
Rotate the crankshaft in the direction of rotation (4, Figure 9-22) until a reading of 0.2032 inch (5.161
mm) BTC is reached on the piston travel indicator. At this position, the push rod travel indicator
should read 0.124 to 0.128 inch (3.15 to 3.25 mm).
(k)
If the push rod travel is not within specifications, remove the camshaft gear, select a new key to give
the required change in push rod travel (Figure 9-23). Install the selected key and the camshaft gear,
and recheck the timing in accordance with steps (d) through j), above.
(I)
Check and adjust the timing on No.1 cylinder on the opposite bank in accordance with steps (c)
through (k), above.
(20)
Install the injectors in No.1 cylinders in accordance with paragraph 6-18.
(21)
Install the rocker arms and covers in accordance with paragraph 9-5.
(22)
Using new packings (55 and 56, Figure 9-15), install the hole cover (54), lockwashers (53), washers (52),
and capscrews (50 and 51). Tighten the capscrews to 45 to 55 pound-feet (61 to 75 newton-meters).
(23)
Install the pipe plugs (16, 17, and 18) in the cover (5) and tighten in accordance with Table 1 -2.
(24)
Using a new gasket (15), install the hole cover (14), lockwashers (13), washers (12), and capscrews (11).
Cross-tighten the capscrews in accordance with Table 1-2.
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