Mack E7 Service Manual page 140

5-101.bk Page 50 Friday, March 17, 2006 11:05 AM
4. Thread oil supply screw and O-ring (7) into
bracket and torque to 5 lb-ft (7 N•m) using
torque wrench J 24405 or equivalent.
5. Lubricate inlet rocker arm (3) and install on
rocker arm shaft.
6. Lubricate valve rocker arm adjusting screw
and nut, and install into inlet rocker arm.
7. Assemble rocker arm retaining (coil) spring
(6) on shaft.
8. Lubricate exhaust rocker arm (5) and install
on rocker arm shaft.
9. Lubricate valve rocker arm adjusting screw
and nut, and install into exhaust rocker
arm (5).
Figure 5-63 — Valve Rocker Arm Shaft Assembly (with Jacobs Engine Brake)
1. Snap ring
2. Flat spring
3. Inlet rocker arm
4. Brackets
5. Exhaust rocker arm
6. Spring
7. Locating/Jacobs oil supply screw and O-ring
8. Bracket with center threaded hole
9. Standard adjusting screws and jam nuts
Page 5-50
200 BENCH PROCEDURES
10. Jacobs adjusting screws and jam nuts
11. Shaft
12. Capscrews (long)
13. Capscrews (short)
14. Washers (for short capscrews)
15. Jacobs brake housing
16. Slave piston adjusters
17. Solenoid
18. Locations for long capscrews
10. Place center (second) rocker arm shaft
bracket (4) and shaft (11) 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 that is already installed.
11. Press shaft into rocker arm bracket until
center lines of mounting holes in brackets
are spaced 5.750 inches (146.050 mm)
apart.