Mack E7 Service Manual page 138

5-101.bk Page 48 Friday, March 17, 2006 11:05 AM
6. Assemble rocker arm retaining (coil) spring
(6) on shaft.
7. Lubricate exhaust rocker arm (5) and install
on rocker arm shaft.
8. Lubricate valve rocker arm adjusting screw
and nut, and install into exhaust rocker arm.
9. Place center (second) rocker arm shaft
bracket (4) and shaft (12) on a flat surface.
This bracket does not have a threaded hole
on top or an oil hole at bottom surface. Align
mounting surface and offset of bracket with
bracket already installed.
10. Press shaft into rocker arm bracket until
center lines of mounting holes in brackets
are spaced 5.750 inches (146 mm) apart.
At this point, a used or scrapped cylinder head
can be used as a template for proper bracket
alignment and to ensure mounting surfaces of
each bracket are parallel.
11. Lubricate inlet rocker arm (3) and install on
shaft.
Page 5-48
200 BENCH PROCEDURES
12. Assemble rocker arm retaining (coil) spring
(6) on shaft.
13. Lubricate exhaust rocker arm (5) and install
on shaft.
14. Place last (third) rocker arm shaft bracket (4)
and shaft on a flat surface. This bracket
does not have a threaded hole on top or an
oil hole at bottom surface. Align mounting
surface and offset of bracket with two
brackets already installed.
15. Check for proper bracket alignment. Press
bracket onto shaft. Ensure that mounting
surfaces of each bracket are parallel.
16. Lubricate and install outermost inlet rocker
arm (3).
17. Install flat spring and retaining snap ring on
end of shaft to keep inlet rocker arm in
place.
18. At opposite end of shaft, lubricate and install
outermost exhaust rocker arm (5).