Information injection-pump assembly
ZEXEL
101402-9250
1014029250
MITSUBISHI-HEAV
3426100021
3426100021
Rating:
Cross reference number
ZEXEL
101402-9250
1014029250
MITSUBISHI-HEAV
3426100021
3426100021
Zexel num
Bosch num
Firm num
Name
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
105780-8140
Bosch type code
EF8511/9A
Nozzle
105780-0000
Bosch type code
DN12SD12T
Nozzle holder
105780-2080
Bosch type code
EF8511/9
Opening pressure
MPa
17.2
Opening pressure
kgf/cm2
175
Injection pipe
Outer diameter - inner diameter - length (mm) mm 6-2-600
Outer diameter - inner diameter - length (mm) mm 6-2-600
Overflow valve
131424-5720
Overflow valve opening pressure
kPa
255
221
289
Overflow valve opening pressure
kgf/cm2
2.6
2.25
2.95
Tester oil delivery pressure
kPa
157
157
157
Tester oil delivery pressure
kgf/cm2
1.6
1.6
1.6
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
1-3-4-2
Pre-stroke
mm
3.6
3.55
3.65
Beginning of injection position
Drive side NO.1
Drive side NO.1
Difference between angles 1
Cal 1-3 deg. 90 89.5 90.5
Cal 1-3 deg. 90 89.5 90.5
Difference between angles 2
Cal 1-4 deg. 180 179.5 180.5
Cal 1-4 deg. 180 179.5 180.5
Difference between angles 3
Cyl.1-2 deg. 270 269.5 270.5
Cyl.1-2 deg. 270 269.5 270.5
Injection quantity adjustment
Adjusting point
B
Rack position
6.9
Pump speed
r/min
950
950
950
Average injection quantity
mm3/st.
42.2
41.2
43.2
Max. variation between cylinders
%
0
-2.5
2.5
Basic
*
Fixing the lever
*
Injection quantity adjustment_02
Adjusting point
-
Rack position
5.9+-0.5
Pump speed
r/min
400
400
400
Average injection quantity
mm3/st.
8
6.7
9.3
Max. variation between cylinders
%
0
-14
14
Fixing the rack
*
Remarks
Adjust only variation between cylinders; adjust governor according to governor specifications.
Adjust only variation between cylinders; adjust governor according to governor specifications.
Injection quantity adjustment_03
Adjusting point
D
Rack position
-
Pump speed
r/min
100
100
100
Average injection quantity
mm3/st.
57.6
57.6
62.6
Fixing the lever
*
Rack limit
*
Test data Ex:
Governor adjustment
N:Pump speed
R:Rack position (mm)
(1)Target notch: K
(2)RACK LIMIT
(3)Set idle sub-spring
(4)Main spring setting
(5)The torque control spring does not operate.
----------
K=16
----------
----------
K=16
----------
Speed control lever angle
F:Full speed
I:Idle
(1)Stopper bolt setting
----------
----------
a=19deg+-5deg b=30deg+-5deg
----------
----------
a=19deg+-5deg b=30deg+-5deg
Stop lever angle
N:Pump normal
S:Stop the pump.
----------
----------
a=26.5deg+-5deg b=53deg+-5deg
----------
----------
a=26.5deg+-5deg b=53deg+-5deg
Timing setting
(1)Pump vertical direction
(2)Position of camshaft's key groove at No 1 cylinder's beginning of injection
(3)-
(4)-
----------
----------
a=(60deg)
----------
----------
a=(60deg)
Information:
Engine Runs Smoothly
Possible Causes/Corrections
Dirty Air Cleaner/If the air cleaner has a restriction indicator, see if the red piston is in view. If there is no restriction indicator, restriction can be checked with a water manometer or a vacuum gauge (which measures in inches of water). Make a connection to the piping between the air cleaner and the inlet of the turbocharger. Check with the engine running at full load rpm. Maximum restriction is 635 mm (25 in.) of water. If a gauge is not available, visually check the air cleaner element for dirt. If the element is dirty, clean the element or install a new element. Air Inlet Piping Damage or Restriction/Make a visual inspection of the air inlet system and check for damage to piping, rags in the inlet piping, or damage to the rain cap or the cap pushed too far on the inlet pipe. If no damage is seen, check inlet restriction with a clean air cleaner element. Exhaust System Restriction/Make a visual inspection of the exhaust system. Check for damage to piping or for a bad muffler. If no damage is found, you can check the system by checking the back pressure from the exhaust (pressure difference measurement between exhaust outlet and atmosphere). The back pressure must not be more than 1016 mm (40 in.) of water. You can also check by removing the exhaust pipes from the exhaust manifolds. With the exhaust pipes removed, start and load the engine on a chassis dynamometer to see if the problem is corrected. Fuel Injection Timing Not Correct/Check and make necessary adjustments as in Testing and Adjusting section of this Service Manual. Fuel Setting Is Not Correct/Check and make necessary adjustments as in Testing and Adjusting Section of this Service Manual. See the FUEL SETTING AND RELATED INFORMATION FICHE for the correct fuel setting. Low Quality Fuel/Test the engine with fuel according to recommendations by Caterpillar Tractor Co. For more information see Special Instruction, Form No. SEHS7067, Fuel Recommendations For Caterpillar Diesel Engines. Also, Special Instruction, Form No. SEHS6947 has fuel correction factors and tables. Bad Fuel Nozzle(s)/Bad fuel nozzles will normally cause the engine to misfire and run rough, but can cause too much smoke with engine still running smooth. Remove the fuel nozzles and test as in Testing and Adjusting section of this Service Manual. Valve Adjustment Not Correct or Valve Leakage/Check and make necessary adjustments as in Testing and Adjusting section of this Service Manual. Intake valve clearance is 0.38 mm (.015 in.) and exhaust valve clearance is 0.64 mm (.025 in.). Valve leakage normally causes the engine to misfire and run rough. Bad Fuel Injection Pump/An injection pump can have a good fuel flow coming from it but cause rough running because of slow timing that is caused by wear on the bottom end of the plunger. See the Testing and Adjusting section in this Service Manual for the correct specifications and procedure to check the plungers and lifters.Fuel pumps which are
Possible Causes/Corrections
Dirty Air Cleaner/If the air cleaner has a restriction indicator, see if the red piston is in view. If there is no restriction indicator, restriction can be checked with a water manometer or a vacuum gauge (which measures in inches of water). Make a connection to the piping between the air cleaner and the inlet of the turbocharger. Check with the engine running at full load rpm. Maximum restriction is 635 mm (25 in.) of water. If a gauge is not available, visually check the air cleaner element for dirt. If the element is dirty, clean the element or install a new element. Air Inlet Piping Damage or Restriction/Make a visual inspection of the air inlet system and check for damage to piping, rags in the inlet piping, or damage to the rain cap or the cap pushed too far on the inlet pipe. If no damage is seen, check inlet restriction with a clean air cleaner element. Exhaust System Restriction/Make a visual inspection of the exhaust system. Check for damage to piping or for a bad muffler. If no damage is found, you can check the system by checking the back pressure from the exhaust (pressure difference measurement between exhaust outlet and atmosphere). The back pressure must not be more than 1016 mm (40 in.) of water. You can also check by removing the exhaust pipes from the exhaust manifolds. With the exhaust pipes removed, start and load the engine on a chassis dynamometer to see if the problem is corrected. Fuel Injection Timing Not Correct/Check and make necessary adjustments as in Testing and Adjusting section of this Service Manual. Fuel Setting Is Not Correct/Check and make necessary adjustments as in Testing and Adjusting Section of this Service Manual. See the FUEL SETTING AND RELATED INFORMATION FICHE for the correct fuel setting. Low Quality Fuel/Test the engine with fuel according to recommendations by Caterpillar Tractor Co. For more information see Special Instruction, Form No. SEHS7067, Fuel Recommendations For Caterpillar Diesel Engines. Also, Special Instruction, Form No. SEHS6947 has fuel correction factors and tables. Bad Fuel Nozzle(s)/Bad fuel nozzles will normally cause the engine to misfire and run rough, but can cause too much smoke with engine still running smooth. Remove the fuel nozzles and test as in Testing and Adjusting section of this Service Manual. Valve Adjustment Not Correct or Valve Leakage/Check and make necessary adjustments as in Testing and Adjusting section of this Service Manual. Intake valve clearance is 0.38 mm (.015 in.) and exhaust valve clearance is 0.64 mm (.025 in.). Valve leakage normally causes the engine to misfire and run rough. Bad Fuel Injection Pump/An injection pump can have a good fuel flow coming from it but cause rough running because of slow timing that is caused by wear on the bottom end of the plunger. See the Testing and Adjusting section in this Service Manual for the correct specifications and procedure to check the plungers and lifters.Fuel pumps which are