Information injection-pump assembly
ZEXEL
106873-7291
1068737291

Rating:
Cross reference number
ZEXEL
106873-7291
1068737291
Zexel num
Bosch num
Firm num
Name
106873-7291
INJECTION-PUMP ASSEMBLY
Calibration Data:
Adjustment conditions
Test oil
1404 Test oil ISO4113 or {SAEJ967d}
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
Outer diameter - inner diameter - length (mm) mm 8-3-600
Overflow valve
131425-0220
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
Direction of rotation (viewed from drive side)
Right R
Right R
Injection timing adjustment
Direction of rotation (viewed from drive side)
Right R
Right R
Injection order
1-2-7-3-
4-5-6-8
Pre-stroke
mm
3.9
3.85
3.95
Beginning of injection position
Governor side NO.1
Governor side NO.1
Difference between angles 1
Cyl.1-2 deg. 45 44.5 45.5
Cyl.1-2 deg. 45 44.5 45.5
Difference between angles 2
Cal 1-7 deg. 90 89.5 90.5
Cal 1-7 deg. 90 89.5 90.5
Difference between angles 3
Cal 1-3 deg. 135 134.5 135.5
Cal 1-3 deg. 135 134.5 135.5
Difference between angles 4
Cal 1-4 deg. 180 179.5 180.5
Cal 1-4 deg. 180 179.5 180.5
Difference between angles 5
Cal 1-5 deg. 225 224.5 225.5
Cal 1-5 deg. 225 224.5 225.5
Difference between angles 6
Cal 1-6 deg. 270 269.5 270.5
Cal 1-6 deg. 270 269.5 270.5
Difference between angles 7
Cal 1-8 deg. 315 314.5 315.5
Cal 1-8 deg. 315 314.5 315.5
Injection quantity adjustment
Adjusting point
-
Rack position
11.5
Pump speed
r/min
700
700
700
Each cylinder's injection qty
mm3/st.
115
111.5
118.5
Basic
*
Fixing the rack
*
Standard for adjustment of the maximum variation between cylinders
*
Injection quantity adjustment_02
Adjusting point
Z
Rack position
8+-0.5
Pump speed
r/min
430
430
430
Each cylinder's injection qty
mm3/st.
19
16.1
21.9
Fixing the rack
*
Standard for adjustment of the maximum variation between cylinders
*
Injection quantity adjustment_03
Adjusting point
A
Rack position
R1(11.5)
Pump speed
r/min
700
700
700
Average injection quantity
mm3/st.
115
114
116
Basic
*
Fixing the lever
*
Injection quantity adjustment_04
Adjusting point
B
Rack position
R1+0.9
Pump speed
r/min
1100
1100
1100
Average injection quantity
mm3/st.
117
113
121
Fixing the lever
*
Injection quantity adjustment_05
Adjusting point
C
Rack position
R1-0.6
Pump speed
r/min
500
500
500
Average injection quantity
mm3/st.
111
107
115
Fixing the lever
*
Test data Ex:
Governor adjustment

N:Pump speed
R:Rack position (mm)
(1)Torque cam stamping: T1
(2)Tolerance for racks not indicated: +-0.05mm.
(3)Damper spring setting
----------
T1=AC73
----------
----------
T1=AC73
----------
Timer 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.
----------
L=1-0.2mm N2=800r/min C2=(10deg) t1=2.5--sec. t2=2.5--sec.
----------
N1=750++r/min P1=0kPa(0kgf/cm2) P2=392kPa(4kgf/cm2) C1=10+-0.3deg R01=0/4load R02=4/4load
----------
L=1-0.2mm N2=800r/min C2=(10deg) t1=2.5--sec. t2=2.5--sec.
----------
N1=750++r/min P1=0kPa(0kgf/cm2) P2=392kPa(4kgf/cm2) C1=10+-0.3deg R01=0/4load R02=4/4load
Speed control lever angle

F:Full speed
I:Idle
(1)Use the hole at R = aa
(2)Stopper bolt set position 'H'
(3)Viewed from feed pump side.
----------
aa=45mm
----------
a=3deg+-5deg b=39deg+-3deg
----------
aa=45mm
----------
a=3deg+-5deg b=39deg+-3deg
Stop lever angle

N:Pump normal
S:Stop the pump.
(1)Use the hole at R = aa
(2)Set the stopper bolt so that speed = bb and rack position = cc. (Confirm non-injection.)
(3)Normal engine position (Rack position corresponding to dd)
----------
aa=45mm bb=1100r/min cc=3+-0.3mm dd=18mm
----------
a=(31deg)+-5deg b=25.5deg+-5deg c=41deg+-5deg
----------
aa=45mm bb=1100r/min cc=3+-0.3mm dd=18mm
----------
a=(31deg)+-5deg b=25.5deg+-5deg c=41deg+-5deg
0000001501 MICRO SWITCH
Adjustment of the micro-switch
Adjust the bolt to obtain the following lever position when the micro-switch is ON.
(1)Speed N1
(2)Rack position Ra
----------
N1=335r/min Ra=7.9+-0.1mm
----------
----------
N1=335r/min Ra=7.9+-0.1mm
----------
0000001601 RACK SENSOR

(VR) measurement voltage
(I) Part number of the control unit
(G) Apply red paint.
(H): End surface of the pump
1. Rack sensor adjustment (-0620)
(1)Fix the speed control lever at the full position
(2)Set the speed to N1 r/min.
(If the boost compensator is provided, apply boost pressure.)
(3)Adjust the bobbin (A) so that the rack sensor's output voltage is VR+-0.01.
(4)At that time, rack position must be Ra.
(5)Apply G at two places.
Connecting part between the joint (B) and the nut (F)
Connecting part between the joint (B) and the end surface of the pump (H)
----------
N1=1100r/min Ra=R1(11.5)+0.9mm
----------
----------
N1=1100r/min Ra=R1(11.5)+0.9mm
----------
0000001701 LEVER

Speed lever cancel adjustment procedure (without dashpot)
(A) Top lever
(B) Bottom lever
(C) Return spring
1. At governor adjustment (FULL adjustment)
(1)Set high idle using the lever (A).
(2)Confirm that lever (A) is not cancelled with lever (B).
----------
----------
----------
----------
Timing setting

(1)Pump vertical direction
(2)Coupling's key groove position at No 1 cylinder's beginning of injection
(3)B.T.D.C.: aa
(4)-
----------
aa=4deg
----------
a=(50deg)
----------
aa=4deg
----------
a=(50deg)
Information:
Adjust - to conform and correspond to specifications. Check - to observe for satisfactory conditions, accuracy, safety or performance. Exchange - to trade a worn or failing component for a remanufactured or rebuilt component. Inspect - to examine closely, in critical appraisal, while testing or evaluating components or systems. Inspect/Rebuilt or Exchange - to examine closely; then making the decision on repair option (Rebuild or Exchange). Lubricate - to apply a lubricant (oil, grease, etc.) as specified for reducing friction, heat and wear between solid surfaces. Protective Devices - indicators such as GSC display and alarms, lights, emergency shutoffs, etc., that alert an operator that a potential problem may exist. Failure to respond to these indicators in a timely manner could result in serious engine damage. Rebuild - to repair a worn or failing component with new parts, components and/or remanufactured components. Replace - to install something new, remanufactured or rebuilt in place of an existing worn or failing component. Service Hours (Electrical) - records the time (clock hours) the engine is actually running but does not reflect variations in speed, load, etc. The Maintenance Schedules are developed for calendar time, clock hours or fuel consumption. Hours are expressed in clock hours, not service meter units (unless the service meter is a clock hour device). Hours of operation include only the time that the engine is running. An electric clock device should be connected so it is OFF when the engine is not running. Caterpillar recommends that fuel consumption be used as the preferred method of establishing intervals rather than time or clock hours. Maintenance Intervals
The Maintenance Schedule requires all previous interval maintenance items to be performed first. For instance, if the Every 250 Hour maintenance is being done, then the Daily and Every 250 Hour maintenance items must be completed BEFORE performing the Every 1000 Hour maintenance.Engines may be equipped with various optional components and the Schedule may recommend maintenance for items not installed on your engine. Simply disregard reference to any extraneous items. If unsure of any item, consult your Caterpillar dealer.Overhaul Interval
One interval for some engines is labeled TOP END because it involves removal, inspection, and rework of the cylinder head components. This interval is dependent on load-sensitive items/total amount of fuel consumed. The last interval in each chart lists the components inspected, rebuilt, exchanged or replaced at overhaul. OVERHAUL is defined as the interval at which the major wear items in the engine should be replaced. The intervals represent maintenance of a non-failed engine. In other words, the engine is being rebuilt with certain new parts replacing worn parts such as piston rings, engine rod and main bearings, valves and valve seats., etc. Incidental to the replacement of these relatively few parts is the complete inspection of all other parts that are visible during the overhaul
The Maintenance Schedule requires all previous interval maintenance items to be performed first. For instance, if the Every 250 Hour maintenance is being done, then the Daily and Every 250 Hour maintenance items must be completed BEFORE performing the Every 1000 Hour maintenance.Engines may be equipped with various optional components and the Schedule may recommend maintenance for items not installed on your engine. Simply disregard reference to any extraneous items. If unsure of any item, consult your Caterpillar dealer.Overhaul Interval
One interval for some engines is labeled TOP END because it involves removal, inspection, and rework of the cylinder head components. This interval is dependent on load-sensitive items/total amount of fuel consumed. The last interval in each chart lists the components inspected, rebuilt, exchanged or replaced at overhaul. OVERHAUL is defined as the interval at which the major wear items in the engine should be replaced. The intervals represent maintenance of a non-failed engine. In other words, the engine is being rebuilt with certain new parts replacing worn parts such as piston rings, engine rod and main bearings, valves and valve seats., etc. Incidental to the replacement of these relatively few parts is the complete inspection of all other parts that are visible during the overhaul
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106873-7291
INJECTION-PUMP ASSEMBLY