Bacharach INJECTOR CALIBRATOR CD3 Installation & Operation Instruction

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Bacharach INJECTOR CALIBRATOR CD3 Installation & Operation Instruction Manual pdf 13 page image

Instructions 67-9319 Bacharach, Inc. Page 1-7INJECTOR CALIBRATOR CD3 INTRODUCTIONFlywheel: A flywheel is mounted on the drivenend of the camshaft for uniform rotation. Anencoder wheel, also mounted on the camshaft inconjunction with an optical pickup, counts strokes.Cambox: The cambox is constructed of cast ironand contains a 1-1/2 inch diameter camshaftsupported by heavy duty tapered roller bearings.The cam is mounted to one end of the shaft on anon-locking taper, secured by a nut and washer.The driving torque is transmitted by a key andkeyway which allows quick and easy cam changes.The rotating cam dips and splashes to lubricate thecam, bearings, tappet, roller, and pusher rod.Flowmeter transducer: For measuring fueloutput of the injector, the calibrator uses a positivedisplacement flow measuring device with a digitalreadout.1.4 Calibration Fluid System (Figure 1-10)The calibration fluid system consists of threeseparate circuits:a. The clamp and unclamp circuit, which alsoprovides continuous circulation of calibrationfluid for close temperature control.b. The injector supply circuit (rail pressure).c. The flowmeter circuit (injector output).(a) Clamping Circuit (Plunger to Body)(Figure 1-11)For plunger-to-body clamping of Cummins andclamping of DD injectors, a double-acting hydrauliccylinder (8) is used.The hydraulic cylinder is mechanically lockedunder normal operating conditions by an interfer-ence fit between the sleeve and the piston. To allowthe cylinder to move for clamping or unclamping aninjector, an intensifier assembly applies highhydraulic pressure to the sleeve.The intensifier assembly (Fig. 1-14A) consists of anair driven hydraulic pump, reservoir, 3-way airsolenoid valve, and a 2-way hydraulic air releasevalve. With power on, under normal operatingconditions, the 2-way hydraulic air release valve isopen so that pump output is vented back to thereservoir.Figure 1-8. Cambox PartsFigure 1-9. Flowmeter TransducerFlowmeterTransducerCamshaftNutandWasherLubricatingOil