Bacharach 67-7622, Installation & Operation Instruction

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Instructions 67-9319
Bacharach, Inc.
Page 1-1
INJECTOR CALIBRATOR CD3 INTRODUCTION
1.0 INTRODUCTION
Bacharach Model CD3 Injector Calibrator provides fast, accurate and safe calibration of mechanical unit
injectors manufactured by Cummins Engine Company and Diesel Technology. The calibrator will accom-
modate the Cummins H-NH, J, and C flanged injectors, plus all cylindrical types, as well as injectors
manufactured for Detroit Diesel (DD) engine model numbers 53, 71, 92, 92 Marine, 149, and 8.2L.
Figure 1-1. CD3 Injector Calibrator
The CD3 was tested at the Bacharach factory with high precision instruments and calibrated for:
• Injector supply pressure
• Calibration fluid temperature
• Flowmeter and calibrator accuracy
• Correct clamping forces (body-to-seat and plunger-to-body)
• Discharge head (Cummins) performance
• Accuracy with Detroit Diesel (DD) master injectors
These can be checked and recalibrated, if necessary, by a qualified service technician using precision
equipment available from Bacharach in an Audit Kit (part number 67-7707). See Appendix A.
1.1 Calibrator Features
INSTRUMENT CONSOLE FEATURES (Refer to Fig. 1-2)
Feature Operation
_________________________________________________________________________________________________
RAIL PRESSURE 0 to 200 psi, accurate to ± 1/4%, has a 4-1/2 in. dial, and a mirror scale
Gauge to avoid parallax. Calibrated at the factory and offset to indicate true
pressure at injector inlet.
CALIBRATION FLUID 40° to 140°F (5° to 60°C) has a 3-1/2 in. dial, accurate to ± 1°F (cali-
TEMPERATURE Gauge brated at the factory to indicate the true temperature at the injector
inlet).
F u e l D e l i v e r y D i s p l a y
I n j e c t o r F u e l S u p p l y
C l a m p
I n j e c t o r C r a d l e