Specifications

Page 2-18 Bacharach, Inc. Instructions 77-9045
CUMMINS INJECTORS CD3 AUDIT KIT
2.8 PLUNGER TO BODY CLAMP FORCE
TEST
The plunger to body clamping force simulates the
force by which the Cummins injector is held in the
engine. This force has an influence on the flow
output of the Cummins injector. The lower the
force, the higher the injector output and vice versa.
The influence varies with the type of injector and
deviation from the required force.
The plunger to body clamping force on GM injectors
ensures proper seating of the injector against its
support and sealing of the injector in the discharge
head.
Equipment Required
• Load cell assembly
• Clip force and temperature indicator
• Discharge head (Cummins)
Set-up
1. Position the load cell assembly (left end) over
the treated push rod extending from the cam-
box.
2. Push and hold the HOLD TO OPERATE button
with the left hand.
3. While holding down the HOLD TO OPERATE
button, move the CLAMP/UNCLAMP lever to
the CLAMP position with the right hand.
4. Wait until the CLAMP MONITOR/TIMING
INDICATOR light on the gauge panel goes out
(about 3 seconds).
NOTE: The CLAMP MONITOR/TIMING
INDICATOR light is installed on all CD3
calibrators manufactured after November
1984. If the light is not on your panel, hold
the button and lever for about 3 seconds.
5. Release the HOLD TO OPERATE button first
and then the CLAMP/UNCLAMP lever. The
lever will return to the center position.
6. Press and hold the HOLD TO OPERATE
button and move the CLAMP/UNCLAMP lever
to the UNCLAMP position.
7. Wait until the cylinder with the discharge head
is fully retracted.
Figure 2-22. Plunger to Body Clamp Force
Test
ÒINDICATOR
ÌCLAMP MONITOR TIMING INDICATOR
ÉPUSH ROD (HIDDEN)