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 (12) Place an internal tooth lock washer (36 and 37) on the end of each shaft and start the nuts (34 and 35) on both
shafts.
(13) Use a wood block, figure 3-98 between the balance weights or wedge a clean cloth between the cam and
(14) Install the cam and balance shaft gear nut retainers (18 and 22, fig. 3-100) with the bolts (19 and 23) and lock
washers. Tighten the bolts to 35-39 ft-lb torque.
(15) Check the clearance between the thrust washer and the thrust shoulder (4 and 30) of both the cam and balance
shaft. The specified clearance is .004 inch to .012 inch with new parts, or a maximum of .018 inch with used parts.
(16) Check the backlash between the mating gears. The specified backlash is found in paragraph 3-17a (9).
(17) Replace the parts, accessories and assemblies that were removed from the engine and refill the cooling system.
i. Installation (Flywheel Housing and Transmission Installed).
(1) Install a Woodruff key in the drive gear end of the camshaft and insert this end into position from the front end
of the engine. Push the shaft in until it slides into the rear end bearing. Use care in the installation of the camshaft to
prevent damage to the cam lobes.
(2) On the D engines, apply grease to the steel face of the thrust washer and install it with the steel face against
the bearing.
(3) Aline the key in the shaft with the keyway in the camshaft drive gear and start the shaft into the gear. Tap the
shaft into the gear with a soft (plastic or rawhide) hammer.
CAUTION
On the D engines, make sure the thrust washer is in the correct position to prevent
pushing the bushing into the bearing or damage to the bushing.
(4) Remove the camshaft gear puller, spacers and adapter plate. Finger tighten the gear retaining nut on the shaft.
(5) Install the front end bearing (and thrust washers B engines) with the bolts and lock washers. Tighten the bolts
to 35-40 ft-lb torque.
CAUTION
Apply grease to the steel faces of the thrust washers and insure that the steel faces
are towards the bearing.
(6) Install the balance weight on the front of the camshaft.
(7) Start the balance weight retaining nut (35, fig. 3-100) and lock washer on the camshaft. Place a wood block
between the balance weights (fig. 3-98). Tighten the gear retaining nut; then, tighten the balance weight nut to 300-325 ft-
lb torque.
(8) Aline the holes in the camshaft intermediate bearings with the tapped holes in the top of the cylinder block.
Install and tighten the lock screws to 15-20 ft-lb torque.
(9) Replace the parts, accessories and assemblies that were removed from the engine and refill the cooling
system.
(10) Install the cam followers and push rods (para 3-14).
(11) Install the balance weight cover and secure with nuts and bolts as shown in figure 3- 98.
3-30. Cylinder Block
a. Removal.
(1) Remove the rocker arms, camfollowers, push rods, and valves (paras 3-14 and 3-15).
(2) Remove the idler gear and hole spacer (para 3-16).
(3) Remove the pistons, connecting rods and liners (paras 3-20 and 3-21).
(4) Remove the crankshaft (para 3-28) and camshaft and balance shaft (para 3-29).
3-146
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