Figure 6-29. Calculating Dial Indicator Reading
If the injector flow is under 284.5 cc, burnish the orifice as follow:
To avoid damage to the test stand, do not leave the injector clamped more than 1 minute after
stopping the main drive. Do not, however, unclamp the injector until the main drive motor has
Raise the fuel arm (21, Figure 6-20), wait until the main drive motor stops, then release the damping
control handle (20) and raise the guard (23).
Burnishing tool 3376135 uses adjustable spring tension to force the burnishing needle into
the orifice. Increasing the spring tension will increase the orifice size and fuel flow.
Using a light spring tension on burnishing tool 3376135, insert the tool into the orifice (10, Figure 6-
21) and push in on the tool until it dicks.
Recheck the injector fuel flow in accordance with steps (14) through (17), above.
If the injector flow is still under 284.5 cc, increase the spring tension on the burnishing tool and
repeat the burnishing operation.
When the injector flow is satisfactory, raise the fuel arm (21, Figure 6-20), wait until the main drive motor
stops, then release the damping control handle (20) and raise the guard (23).
Remove the injector, adapter, and link from the test stand, and turn the fuel switch on the injector control
panel (4) to OFF.
Remove the adapter and link from the injector.
Install a new strainer element (9, Figure 6-21) and filter screen dip (8), and install the injector plunger link
Store the assembled injector in a dean plastic bag until ready for installation.