DRUM AS 2635233 - Caterpillar

Table 1
Required Tools    
Tool     Part
Number     Part Description     Qty    
A     A1     334-3221     Nozzle     1    
A2 158-6067     Hose     2    
A3 124-6275     Hose Clamp     3    
A4 102-5758     Hose End     2    
A5 8D-9448     Boss     1    
A6 2P-8278     Sight gauge     1    
Illustration 1 g02212173
Typical exampleTooling (A)
Ensure that all adjustments and repairs that are carried out to the fuel system are performed by authorized personnel that have the correct training.Before beginning ANY work on the fuel system, refer to Operation and Maintenance Manual, "General Hazard Information and High Pressure Fuel Lines" for safety information. Refer to Systems Operation, Testing and Adjusting, "Cleanliness of Fuel System Components" for detailed information on the standards of cleanliness that must be observed during ALL work on the fuel system.
Note: Ensure that the tools are stored with the caps in place. Store the tools in a clean plastic bag.
Ensure that the fuel level in the fuel tank is above the level of the suction pipe in the fuel tank.
Inspect the fuel system thoroughly for leaks. If necessary, repair the fuel system.
Check all low-pressure fuel lines from the fuel tank for restrictions. Replace any damaged components.
Install new fuel filters. Refer to Operation and Maintenance Manual for the correct procedures.
Run the engine. Check if the problem has been resolved. Stop the engine. Refer to Operation and Maintenance Manual for the correct procedure.
Illustration 2 g02210878
(1) Bolt (2) Block
Install Tooling (A) into block (2) . When possible, install the sight gauge in a straight section of the fuel line that is at least 304.8 mm (12 inch) long. Do not install the sight gauge near the following devices that create turbulence:
Elbows
Relief valves
Check valvesObserve the fuel flow during engine cranking. Look for air bubbles in the fuel. If there is no fuel in the sight gauge, prime the fuel system
Illustration 3 g01096678
2P-8278 Tube As (SIGHT GAUGE) (1) A steady stream of small bubbles with a diameter of approximately 1.60 mm (0.063 inch) is an acceptable amount of air in the fuel. (2) Bubbles with a diameter of approximately 6.35 mm (0.250 inch) are also acceptable if there is 2 second to 3 second intervals between bubbles. (3) Excessive air bubbles in the fuel are not acceptable.
Install a second sight gauge at the inlet to the fuel transfer pump if excessive air is seen in the sight gauge in the fuel return line. Move the sight gauge from the fuel return line and install the sight gauge at the inlet to the fuel transfer pump if a second sight gauge is not available. Observe the fuel flow during engine cranking. Look for air bubbles in the fuel. If the engine starts, check for air in the fuel at varying engine speeds.If excessive air is not seen at the inlet to the fuel transfer pump, the air is entering the system after the fuel transfer pump. Proceed