Figure 3-142. Rocker arm assembly.
(i) Slide a bearing, tapped to receive a
rocker lever cover capscrew, onto shaft.
(j) Install an exhaust, injector, and intake
lever and center bearing on shaft.
(k) Install an intake, injector, and exhaust
lever and another tapped bearing on shaft.
(l) Install an exhaust, injector, intake lever,
and plain bearing on shaft.
(a) Install an intake, injector, exhaust lever,
and remaining bearing on flywheel end (B) of shaft.
(1) Rocker arm assembly.
(a) Insert oil transfer dowel in cylinder head,
(b) Using a bar or wooden slat to hold levers
in place, mount rocker lever assembly on cylinder head.
(c) Engage push tubes with rocker lever
Figure 3-143. Oil transfer dowel insertion.
adjusting screws; drive rocker lever assembly over
dowels with soft hammer. Dowels often stick in rocker
lever bearing rather than cylinder head.
(d) Lubricate rocker lever shaft bearing
capscrews with clean lubricating oil; install and tighten
(e) Lubricate long cylinder head capscrews
with clean lubricating oil; place hardened washers on
capscrews and install in cylinder head through rocker
(f) Tighten all cylinder head capscrews to 25
Figure 3-144. Cylinder head capscrew tightening
(g) Continue to tighten capscrews, in 100 ft.
(j) Binding levers may be freed as follows:
1. Shift one set of injector and valve rocker
(h) Then, in 50 ft.-lbs. increments, tighten
levers toward rear of engine and against rocker lever
to 390/400 ft.-lbs.
(i) After cylinder head is secured to block,
2. Measure clearance between valve rocker
check rocker levers to be sure they are not binding.
lever and shaft bearing toward front of engine; if
Tightening the long cylinder head capscrews may shift
clearance is less than 0.009 inch, stock must be
machined from each side of injector lever to increase
clearance to 0.025 inch.