Figure 7-28. Correct position of camshaft lobes (cams) for fuel injection pump installation-sectional view.

1. Using two 5 / 16-in. steel rods (A), hold fuel injection

Figure 7-28. Correct position of camshaft

pump diaphragm pack stationary. Rotate flange

lobes (cams) for fuel injection pump

coupling counterclockwise to remove any backlash in

i n s t a l l a t i o n -sectional view.

injection pump gear train and bring the advance unit to

the full retard position.

2. When backlash is removed and timing marks alined,

install four lock washers and bolts (B) and tighten

securely.

Note. When installing bolts in diaphragm

coupling, be sure the proper length bolts - FSN

5306-944-7537 are used. Bolts longer than

53 / 64-inch can be threaded completely through

the coupling flange and dent the diaphragm

pack. This will create a high stress point and

possible

premature

coupling

failure.

7-29.

Removing

fuel

injection

pump

drive

gear

train

backlash

and

setting

advance unit retard position-

diaphragm coupling.

7-21