Remove the servo advance plunger. (Figure 4-105, Left). Using a one inch socket and breaker bar, loosen and remove the spring side piston hole plug.…

Operations which can be performed individually without removing the pump from the engine are as follows: • Cover seal replacements • Guide stud seal replacements…

Background information of failed governor weight retainer ring: diesel fuel that is contaminated with excessive water or the presence of alcohols found in some additives…

Figure 4-81 shows a typical test stand installation. The test stand incorporates a 2 to 15 H.R electric motor, depending on the particular model used,…

A damper orifice is located after the delivery valve. This damper is called a trailing port snubber (Figure 4-79). The trailing port snubber is used…

A single, spring loaded, delivery valve (Figure 4-78) is located in the center of the DB2 pump rotor. It serves as a one way check…

A rotor seizure can be due to a loss of clearance between the hydraulic head and rotor during the transient (or warm-up) condition. Heat generated…

The final component that we will examine is the heart of the diesel injection pump; the rotor. (Figure 4-77). Due to the extremely close tolerances…

See Figure 4-76. The 6.2L uses a ball-pivot governor arm which has a slot below the bi-metal strip. This prevents interference with the ball pivot…

When idle speed drops due to hot fuel, a bi-metal strip on the governor arm deflects. This creates a “ spring load” on the governor…