TM 9-6115-604-34
NAVFAC P-8-633-34
d.
Install.
NOTE
Because of its size and weight, assistance will be needed to install the housing (47).
(1)
If removed, install the dowels (49) in the cylinder block
(2)
Fabricate two guide studs (refer to Table 2-2) and install in opposite sides of the cylinder block to support
the housing (47, Figure 9-15) during installation.
(3)
Apply a light coat of sealing compound MIL-S-45180 to a new gasket (48), and install it over the guide
studs and dowels.
(4)
Install the housing (47) over the guide studs and tap into place with a soft hammer.
(5)
Install the lockwashers (46) and capscrews (45), and crosstighten in three steps to 45 to 55 pound-feet (61
to 75 newton-meters).
WARNING
Insulated gloves are required to avoid bums when handling heated parts.
(6)
Heat the left and right bank camshaft gears (29 and 30) at 400F (204C) for 1 hour in a preheated oven.
(7)
Coat the camshaft gear hub and thrust plate (32) with anti-seize compound MIL-A-907.
(8)
Install a new key (31) in each camshaft.
NOTE
When performing the following step, it may be necessary to remove the rear camshaft covers
(22) and have an assistant hold the camshaft toward the front of the engine with a heavy,
copper back-up bar to ensure that the gear seats against the shoulder.
(9)
Using a suitable length and diameter of tubing and a brass hammer, tap the camshaft gear (29 or 30) on
the camshaft until it is seated against the shoulder. Be sure the gear remains against the shoulder until it
is cool.
(10)
Heat the crankshaft gear (43) at 400F (204C) for 1 hour in a preheated oven.
(11)
Install the key (44) in the crankshaft and coat the crankshaft hub with ant-seize compound MIL-A-907.
(12)
Using a suitable length and diameter of tubing and a brass hammer, drive the crankshaft gear (43) on the
shaft until it is seated against the shoulder. Be sure the gear remains against the shoulder until cool.
When cool, maximum clearance between shoulder and gear shall be 0.015 inch (0.38 mm).
(13)
Install the water pump idler gear (40) as follows: (a) Lubricate the idler shaft (41) and thrust washers (38)
with lubricating oil MIL-L-21 04.
(b)
Position the water pump idler gear shaft (41) into the cylinder block.
(c)
Position one idler gear thrust washer (38) on the idler shaft (41) so the grooved thrust face will face
the gear (40).
(d)
Place the water pump idler gear (40) on the shaft, and index the timing marks (1 and 3, Figure 9-16).
(e)
Install the outer thrust washer (38) with the grooved face of the thrust bearing toward the gear.
(f)
Lubricate the threads of the center capscrew (39, Figure 9-15) with dean engine lubricating oil, install
the center capscrew and washer (39 and 34), and tighten the center capscrew to 175 to 185 pound-
feet (237 to 251 newton-meters).
(14)
Install the camshaft idler gears (36 and 37) as follows:
(a)
Lubricate the idler shafts (35) and thrust washers (38) with lubricating oil MIL-L-9000.
(b)
Position one thrust washer (38) on the shaft (35) with the smooth surface (steel back side) toward the
shaft retaining collar.
(c)
Position the idler gear (36 or 37) on the shaft (35) with the timing marks on the gear toward the shaft
retaining collar.
(d)
Position the second thrust washer (38) on the shaft (35) with the grooved side toward the gear.
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