826791 SPRING Mercury
1031203PD, 1031203UB, 1031203UD, 1031207ZF, 1031312DB, 1040213YL, 1041312UB, 10432037D, 1043203DD, 1043203VD, 1043213DD, 1043302DD, 1043411DD, 1043412DB, 1043412DD, 1050302DB, 1050302FB, 1050302FD, 1050302SD, 1050312FB, 1050312LD, 1050411DD, 1050412D
SPRING
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Compatible models:
1031203PD
1031203UB
1031203UD
1031207ZF
1031312DB
1040213YL
1041312UB
10432037D
1043203DD
1043203VD
1043213DD
1043302DD
1043411DD
1043412DB
1043412DD
1050302DB
1050302FB
1050302FD
1050302SD
1050312FB
1050312LD
1050411DD
1050412DB
1050412DD
1050412FB
1050412FD
1055207DB
1055207UD
1055207VB
1075217DD
1075217FD
1075217PD
1075217VD
10752L7DF
10752L7FF
1075317DB
1075317FB
1075412DB
1075412DD
1075412DN
1075412FB
1075412FY
1090412DB
1090412DC
1090412DD
1090412DN
1090412DY
1090412FF
1090412FY
1090422DY
1090422FF
1090472DD
1090472FF
1090472FY
1F25201UD
1F25203VD
Mercury
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- MANUAL STARTER » 826791
Information:
Fuel Supply Pressure
Make sure that the pressure of the gas to the gas pressure regulator is sufficient.For low pressure gas, pressure of 10 to 35 kPa (1.5 to 5.0 psi) is required for the gas pressure regulator.For high pressure gas, pressure of 83 to 172 kPa (12 to 25 psi) is required for the gas pressure regulator.
Use only properly designated Caterpillar gas pressure regulators.
Fluctuations of the fuel pressure can change the air/fuel ratio. For low pressure gas fuel systems, the maximum fluctuation that is allowed in the fuel pressure to the engine is 1.7 kPa ( 0.25 psi).Gas Pressure Regulator
The gas pressure regulator maintains a pressure differential between the air and the fuel that is supplied to the carburetor. After setting, the gas pressure regulator will maintain the pressure differential in response to changes in the air pressure.Determine whether the pressure regulator uses positive pressure or negative pressure.For engines with dual fuel systems, both of the regulators must be adjusted.A water manometer is used to measure the pressure differential. This measurement is taken when the engine is operating at high idle rpm. When a load is applied, the fuel pressure will usually decrease by approximately 0.25 to 0.5 kPa (1 to 2 inches of H2O). If the performance of the gas pressure regulator is erratic, the gas pressure regulator may require service.Installation Before the Gas Pressure Regulator
To prevent particles from entering the engine, install a one micron fuel filter 1 m (3 ft) before the gas pressure regulator. The recommended filter is the 4P-4717 Fuel Filter with the 4P-4720 Gas Filter Element.Adjusting the Gas Pressure to the Engine
Table 1
Tools Needed Qty
8T-5160 Gas Regulator Setting Tool 1 Adjusting the Positive Pressure Regulator
Make sure that the gas to the gas pressure regulator is shut OFF. Note: A water manometer may be used instead of the 1U-5470 Engine Pressure Group.
Attach the lines for the differential pressure gauge of the 1U-5470 Engine Pressure Group.
Illustration 1 g00777970
Typical arrangement for low pressure gas
(1) Plug in the gas line to the carburetor
(2) Air filter service indicator on the air cleaner
(3) Cap
For low pressure gas, remove plug (1). Remove service indicator (2) from the air cleaner. Attach the lines for the differential pressure gauge of the 1U-5470 Engine Pressure Group into the openings.
Illustration 2 g00822704
Typical arrangement for high pressure gas
(1) Plug in the gas line to the carburetor
(2) Plug in the balance line from the aftercooler
(3) Cap
For high pressure gas, remove plugs (1) and (2). Attach the lines for the differential pressure gauge of the 1U-5470 Engine Pressure Group into the openings.
Remove cap (3). The nut for adjusting the gas pressure regulator is under the cap.
Turn ON the gas supply to the gas pressure regulator. Observe the pressure differential. The correct pressure of the gas is 1 to 1.2 kPa (4 to 5 inches of H2O) HIGHER than the atmospheric pressure.
If necessary, adjust the gas pressure regulator in order to obtain the desired pressure. Use the 8T-5160 Gas Regulator Setting Tool or use a large screwdriver to turn the nut.
Start the engine. Operate the engine at rated speed (no load). Observe the pressure differential. Adjust the gas pressure again, if necessary.
Stop the engine. Turn OFF the gas supply to the gas pressure regulator.
Remove the lines for the differential pressure gauge. Install the original parts (1), (2), and (3) into the openings.
Turn ON the gas supply to the gas pressure regulator. Adjusting the Negative Pressure Regulator
Make sure that the gas to the gas pressure regulator is shut OFF. Note: A water manometer may be used instead of the 1U-5470 Engine Pressure Group.
Illustration 3 g00778139
Typical arrangement for low pressure gas
(1) Plug in the gas line to the carburetor
(2) Cap
Remove plug (1). Remove the service indicator from the air cleaner. Attach the lines for the differential pressure gauge of the 1U-5470 Engine Pressure Group into the openings.
Remove cap (2). The nut for adjusting the gas pressure regulator is under the cap.
Turn ON the gas supply to the gas pressure regulator. Observe the pressure differential. The correct gas pressure is approximately −0.25 kPa (−1 inch of H2O) LOWER than the atmospheric pressure.
If necessary, adjust the gas pressure regulator in order to obtain the desired pressure. Use the 8T-5160 Gas Regulator Setting Tool or use a large screwdriver to turn the nut.
Start the engine. Operate the engine at rated speed (no load). Observe the pressure differential. Adjust the gas pressure again, if necessary.
Stop the engine. Turn OFF the gas supply to the gas pressure regulator.
Remove the lines for the differential pressure gauge. Install plug (1) and install the service indicator. Install cap (3).
Turn ON the gas supply to the gas pressure regulator.
Make sure that the pressure of the gas to the gas pressure regulator is sufficient.For low pressure gas, pressure of 10 to 35 kPa (1.5 to 5.0 psi) is required for the gas pressure regulator.For high pressure gas, pressure of 83 to 172 kPa (12 to 25 psi) is required for the gas pressure regulator.
Use only properly designated Caterpillar gas pressure regulators.
Fluctuations of the fuel pressure can change the air/fuel ratio. For low pressure gas fuel systems, the maximum fluctuation that is allowed in the fuel pressure to the engine is 1.7 kPa ( 0.25 psi).Gas Pressure Regulator
The gas pressure regulator maintains a pressure differential between the air and the fuel that is supplied to the carburetor. After setting, the gas pressure regulator will maintain the pressure differential in response to changes in the air pressure.Determine whether the pressure regulator uses positive pressure or negative pressure.For engines with dual fuel systems, both of the regulators must be adjusted.A water manometer is used to measure the pressure differential. This measurement is taken when the engine is operating at high idle rpm. When a load is applied, the fuel pressure will usually decrease by approximately 0.25 to 0.5 kPa (1 to 2 inches of H2O). If the performance of the gas pressure regulator is erratic, the gas pressure regulator may require service.Installation Before the Gas Pressure Regulator
To prevent particles from entering the engine, install a one micron fuel filter 1 m (3 ft) before the gas pressure regulator. The recommended filter is the 4P-4717 Fuel Filter with the 4P-4720 Gas Filter Element.Adjusting the Gas Pressure to the Engine
Table 1
Tools Needed Qty
8T-5160 Gas Regulator Setting Tool 1 Adjusting the Positive Pressure Regulator
Make sure that the gas to the gas pressure regulator is shut OFF. Note: A water manometer may be used instead of the 1U-5470 Engine Pressure Group.
Attach the lines for the differential pressure gauge of the 1U-5470 Engine Pressure Group.
Illustration 1 g00777970
Typical arrangement for low pressure gas
(1) Plug in the gas line to the carburetor
(2) Air filter service indicator on the air cleaner
(3) Cap
For low pressure gas, remove plug (1). Remove service indicator (2) from the air cleaner. Attach the lines for the differential pressure gauge of the 1U-5470 Engine Pressure Group into the openings.
Illustration 2 g00822704
Typical arrangement for high pressure gas
(1) Plug in the gas line to the carburetor
(2) Plug in the balance line from the aftercooler
(3) Cap
For high pressure gas, remove plugs (1) and (2). Attach the lines for the differential pressure gauge of the 1U-5470 Engine Pressure Group into the openings.
Remove cap (3). The nut for adjusting the gas pressure regulator is under the cap.
Turn ON the gas supply to the gas pressure regulator. Observe the pressure differential. The correct pressure of the gas is 1 to 1.2 kPa (4 to 5 inches of H2O) HIGHER than the atmospheric pressure.
If necessary, adjust the gas pressure regulator in order to obtain the desired pressure. Use the 8T-5160 Gas Regulator Setting Tool or use a large screwdriver to turn the nut.
Start the engine. Operate the engine at rated speed (no load). Observe the pressure differential. Adjust the gas pressure again, if necessary.
Stop the engine. Turn OFF the gas supply to the gas pressure regulator.
Remove the lines for the differential pressure gauge. Install the original parts (1), (2), and (3) into the openings.
Turn ON the gas supply to the gas pressure regulator. Adjusting the Negative Pressure Regulator
Make sure that the gas to the gas pressure regulator is shut OFF. Note: A water manometer may be used instead of the 1U-5470 Engine Pressure Group.
Illustration 3 g00778139
Typical arrangement for low pressure gas
(1) Plug in the gas line to the carburetor
(2) Cap
Remove plug (1). Remove the service indicator from the air cleaner. Attach the lines for the differential pressure gauge of the 1U-5470 Engine Pressure Group into the openings.
Remove cap (2). The nut for adjusting the gas pressure regulator is under the cap.
Turn ON the gas supply to the gas pressure regulator. Observe the pressure differential. The correct gas pressure is approximately −0.25 kPa (−1 inch of H2O) LOWER than the atmospheric pressure.
If necessary, adjust the gas pressure regulator in order to obtain the desired pressure. Use the 8T-5160 Gas Regulator Setting Tool or use a large screwdriver to turn the nut.
Start the engine. Operate the engine at rated speed (no load). Observe the pressure differential. Adjust the gas pressure again, if necessary.
Stop the engine. Turn OFF the gas supply to the gas pressure regulator.
Remove the lines for the differential pressure gauge. Install plug (1) and install the service indicator. Install cap (3).
Turn ON the gas supply to the gas pressure regulator.
Parts spring Mercury:
99622
99622 SPRING
1035207, 10402139D, 1045217, 1050302SD, 1050312BC, 1050312LD, 1055207DB, 1055207UD, 1055207VB, 1070312BC, 1070717, 1075217PD, 10754120D, 1075524, 1090524, 1100312BD, 1100412PD, 1115525, 11354120D, 1135412GD, 1135412MD, 1135412SD, 1135726, 1150413SD,
812708
812708 SPRING
1035207, 10402139D, 1050302SD, 1050312BC, 1050312LD, 1055207DB, 1055207UD, 1055207VB, 1A30302ZB, 1A40302FD, 1A40302HZ, 1A40303KZ, 1A40311FZ, 1A40311HZ, 1A40403HZ, 1A40412HZ, 1A41412ZB, 1A41452EZ, 1A41452FU, 1A51411HZ, 1A51412HZ, 1A51452EZ, 1A60351EZ,
824994
824994 SPRING, Plate
1016207PD, 1016207RB, 1016207SB, 10202014D, 1020201DB, 1020201VB, 1031203PD, 1031203UB, 1031203UD, 1031207ZF, 1031312DB, 1040213YL, 1041312UB, 10432037D, 1043203DD, 1043203VD, 1043213DD, 1043302DD, 1043411DD, 1043412DB, 1043412DD, 1050302DB, 1050302F
86852 1
824993
824993 SPRING-BACKING
1031203PD, 1031203UB, 1031203UD, 1031207ZF, 1031312DB, 1040213YL, 1041312UB, 10432037D, 1043203DD, 1043203VD, 1043213DD, 1043302DD, 1043411DD, 1043412DB, 1043412DD, 1050302DB, 1050302FB, 1050302FD, 1050312FB, 1050411DD, 1050412DB, 1050412DD, 1050412F
86851 1
826791 1
826791 1 SPRING
1B25203ZB, 1F25203VD, 1F30203VD, 1F30203ZB, 1F40203FD, 1F40203HZ, 1F40213FZ, 1F40452YB
16266 3