106871-5541 ZEXEL INJECTION-PUMP ASSEMBLY Calibration Data 1068715541

Information Cross number Calibration Data Calibration Data Ex

Information injection-pump assembly

ZEXEL 106871-5541 1068715541

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Cross reference number

ZEXEL 106871-5541 1068715541

Zexel num

Bosch num

Firm num

Name

106871-5541

INJECTION-PUMP ASSEMBLY

Calibration Data:

Adjustment conditions

Test oil
1404 Test oil ISO4113 or {SAEJ967d}

Test oil temperature degC 40 40 45

Nozzle and nozzle holder 105780-8250

Bosch type code 1 688 901 101

Nozzle 105780-0120

Bosch type code 1 688 901 990

Nozzle holder 105780-2190

Opening pressure MPa 20.7

Opening pressure kgf/cm2 211

Injection pipe
Outer diameter - inner diameter - length (mm) mm 8-3-600

Overflow valve 131425-0120

Overflow valve opening pressure kPa 157 123 191

Overflow valve opening pressure kgf/cm2 1.6 1.25 1.95

Tester oil delivery pressure kPa 255 255 255

Tester oil delivery pressure kgf/cm2 2.6 2.6 2.6

RED3 control unit part number 407910-3 960

RED3 rack sensor specifications mm 19

Direction of rotation (viewed from drive side)
Right R

Injection timing adjustment

Direction of rotation (viewed from drive side)
Right R

Injection order 1-8-7-5- 4-3-6-2

Pre-stroke mm 3.9 3.87 3.93

Beginning of injection position
Governor side NO.1

Difference between angles 1
Cal 1-8 deg. 45 44.75 45.25

Difference between angles 2
Cal 1-7 deg. 90 89.75 90.25

Difference between angles 3
Cal 1-5 deg. 135 134.75 135.25

Difference between angles 4
Cal 1-4 deg. 180 179.75 180.25

Difference between angles 5
Cal 1-3 deg. 225 224.75 225.25

Difference between angles 6
Cal 1-6 deg. 270 269.75 270.25

Difference between angles 7
Cyl.1-2 deg. 315 314.75 315.25

Injection quantity adjustment

Rack position (13.7)

Vist V 1.8 1.8 1.8

Pump speed r/min 600 600 600

Average injection quantity mm3/st. 141.5 139.5 143.5

Max. variation between cylinders % 0 -4 4

Basic *

Injection quantity adjustment_02

Rack position (9)

Vist V 2.5 2.4 2.6

Pump speed r/min 330 330 330

Average injection quantity mm3/st. 16 14 18

Max. variation between cylinders % 0 -10 10

Test data Ex:

Governor adjustment

(1)Adjusting range (2)Step response time (N): Speed of the pump (L): Load (theta) Advance angle (Srd1) Step response time 1 (Srd2) Step response time 2 1. Adjusting conditions for the variable timer (1)Adjust the clearance between the pickup and the protrusion to L.
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L=1-0.2mm N2=800r/min C2=(9)deg t1=1.7--sec. t2=1.7--sec.
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N1=1000++r/min P1=0kPa(0kgf/cm2) P2=392kPa(4kgf/cm2) C1=9+-0.3deg R01=0/4load R02=4/4load

Speed control lever angle

N:Pump normal S:Stop the pump. (1)Rack position = aa (2)Rack position bb
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aa=20mm bb=1mm
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a=27deg+-5deg b=37deg+-5deg

0000000901

(1)Pump vertical direction (2)Position of the coupling's key groove at the beginning of injection of the No. 8 cylinder. (3)- (4)-
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a=(90deg)

Stop lever angle

(Rs) rack sensor specifications (C/U) control unit part number (V) Rack sensor output voltage (R) Rack position (mm) 1. Confirming governor output characteristics (rack 19 mm, span 6 mm) (1)When the output voltages of the rack sensor are V1 and V2, check that the rack positions R1 and R2 in the table above are satisfied.
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Information:

Introduction
This Special Instruction contains the necessary procedure in order to install unit injectors for 3114, 3116, and 3126 MUI engines.Removal and Installation Procedure
Note: To avoid damage to the unit injector during removal of the unit injector from the cylinder head, refer to the Service Manual for the removal procedure of the unit injector.Use the latest process for servicing the unit injector sleeves in the cylinder head before you install replacement unit injectors. Refer to the Service Manual and other service news articles in order to find the latest service information, including new tools and procedures.Before a new unit injector or a remanufactured unit injector is installed into an engine, take adequate precautions in order to clean the internal fuel lines and the unit injector sleeve. Also, install a new Caterpillar high efficiency fuel filter.Lubricate the injector rack bar with clean diesel fuel or 1U-8265 Penetrating Oil .
Illustration 1 g02144296
Incorrect testing procedure for the tappet springDo not depress the tappet spring. Refer to Illustration 1. Do not force the injector rack bar in and out since this action may damage the internal parts of the unit injector. A tight rack on a unit injector that is not installed in the engine is not an indication of a faulty unit injector. Forcing the injector rack bar in and out may cause the unit injector to become damaged. Forcing the injector rack bar in and out may possibly void all the warranty.Do not test the unit injectors prior to engine installation. The unit injectors are tested 100% at the factory and Pop Testing may contaminate the unit injector.Before you install the unit injector, apply clean engine oil on the O-ring seals for ease of installation.Install the unit injector according to the procedure in the Service Manual by using 173-1530 Injector Seating Tool . Tighten the unit injector clamp retaining bolt to a torque of 12 3 N m (9 2 lb ft).Verify the following parameters and settings according to the procedures in the Service Manual: unit injector synchronization, fuel setting, fuel timing and valve lash. Adjust the parameters and settings in order to meet specifications only.