- 1. Drain water and sediment from the fuel tank.
- 2. Check and service as required:
- a. Engine cooling system hoses.
- b. Power take-off.
- 3. Change the fuel filter element.
- 4. Clean the fuel lift pump gauze strainer.
- 5. Lubricate in accordance with the Lubrication Chart.
Draining The Water And Sediment From The Fuel Tank
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INADVERTENT STARTING OF THE ENGINE COULD CAUSE PERSONAL INJURY. SHUT THE ENGINE DOWN AND REMOVE THE KEY FROM THE IGNITION SWITCH. |
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- 1. Close the shutoff valve at the rear of the fuel tank.
- 2. Disconnect the fuel line from the shutoff valve and plug the fuel line opening.
- 3. Connect a suitable length of hose to the shutoff valve and run the hose over the side of the mainframe and into a container.
- 4. Open the shutoff valve.
- 5. Allow fuel to drain from the tank until the fuel is free of water and sediment.
- 6. Close the shutoff valve.
- 7. Remove the hose and reconnect the fuel line.
- 8. If necessary, prime the fuel system (see page 4-34).
Checking The Engine Cooling System Hoses
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INADVERTENT STARTING OF THE ENGINE COULD CAUSE PERSONAL INJURY. SHUT THE ENGINE DOWN AND REMOVE THE KEY FROM THE IGNITION SWITCH. |
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Check the hoses for signs of deterioration, such as cracking or softness. Remove any fuel or oil from the hoses and tighten any loose clamps.
Checking The Power Take-Off
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INADVERTENT STARTING OF THE ENGINE COULD CAUSE PERSONAL INJURY. SHUT THE ENGINE DOWN AND REMOVE THE KEY FROM THE IGNITION SWITCH. |
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Remove the inspection hole cover on the clutch housing and check the clutch facing for wear. If necessary, adjust the clutch as follows:
- 1. Disengage the clutch with the hand lever.
- 2. Rotate the clutch, if necessary, to bring the adjusting ring lock within reach.
- 3. Remove the clutch adjusting ring lock assembly from the clutch pressure plate and adjusting ring. Then, while holding the clutch drive shaft to prevent the clutch from turning, turn the clutch adjusting ring counterclockwise and tighten the clutch until the desired pressure on the outer end of the hand lever is obtained.
When properly adjusted, the approximate force required at the outer end of the hand lever to engage the clutch is 60 to 70 pounds (27 to 32 kg). This specified force is applicable only with the hand lever which is furnished with the power take-off. A suitable spring scale may be used to check the force required to engage the clutch.
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THE THRUST LOAD ON THE BRONZE CLUTCH RELEASE BEARING SHOULD BE KEPT AT AN ABSOLUTE MINIMUM. THEREFORE, THE HAND LEVER SHOULD BE POSITIONED ON THE SHAFT AS NEAR THE 12 O'CLOCK OR 6 O'CLOCK POSITION AS POSSIBLE. THE 9 AND 3 O'CLOCK POSITIONS ARE TO BE AVOIDED. |
Changing The Fuel Filter Element
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INADVERTENT STARTING OF THE ENGINE COULD CAUSE PERSONAL INJURY. SHUT THE ENGINE DOWN AND REMOVE THE KEY FROM THE IGNITION SWITCH. |
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- 1. Thoroughly clean the exterior of the filter assembly.
- 2. Holding the filter base, unscrew the setscrew in the center of the filter head and lower the base and filter element.
- 3. Thoroughly clean the filter head and base.
- 4. Inspect the sealing rings and replace if damaged in any way.
- 5. Place the base squarely on the bottom of the new filter element and move the element squarely to the filter head so that the top rim of the element is located centrally against the sealing ring in the filter head.
- 6. Hold in this position while the securing setscrew is located and screwed home.
- 7. Prime the fuel system (see page 4-34 for procedures).
Cleaning The Fuel Lift Pump Gauze Strainer
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INADVERTENT STARTING OF THE ENGINE COULD CAUSE PERSONAL INJURY. SHUT THE ENGINE DOWN AND REMOVE THE KEY FROM THE IGNITION SWITCH. DIESEL FUEL IS VOLATILE AND COULD IGNITE OR EXPLODE, CAUSING SERIOUS BURNS AND INJURIES FROM FLYING OBJECTS. NEVER SMOKE OR HAVE AN OPEN FLAME WHILE WORKING ON THE FUEL SYSTEM. |
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Remove the strainer by unscrewing the bolt securing the domed cover on the top of the fuel lift pump. Wash the strainer in nonflammable solvent.
When reassembling after cleaning, ensure that a good joint is made between the cover and fuel lift pump body, as any leakage of air here will cause air locks in the fuel system.
Priming The Fuel System
The air must be vented from the fuel system whenever any part of the system between the fuel tank and injection pump has been disconnected for any reason or when the system has been emptied of fuel.
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DIESEL FUEL IS VOLATILE AND COULD IGNITE OR EXPLODE, CAUSING SERIOUS BURNS AND INJURIES FROM FLYING OBJECTS. NEVER SMOKE OR HAVE AN OPEN FLAME WHILE WORKING ON THE FUEL SYSTEM. |
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| NOTICE |
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NO ATTEMPT MUST BE MADE TO START THE ENGINE UNTIL THE INJECTION PUMP HAS BEEN FILLED AND PRIMED AS SERIOUS DAMAGE CAN BE CAUSED TO THE PUMP DUE TO LACK OF LUBRIAVSION. |
To bleed systems with a C.A.V. fuel pump, SHUT THE ENGINE DOWN, then:
- 1. Loosen the air vent screw near the top of the governor control cover (A).
- 2. Loosen the vent screw on the hydraulic head locking screw on the side of the fuel pump body (B).
- 3. Loosen the vent screw on the top of the fuel filter (D).
- 4. Operate the priming lever of the fuel lift pump and when fuel, free from air bubbles, issues from each venting point, tighten the screws in the following order:
- a. Fuel filter venting point (D).
- b. Head locking screw (B).
- c. Governor vent screw (A).
- b. Head locking screw (B).
NOTE: IF THE CAM ON THE ENGINE CAMSHAFT OPERATING THE FUEL LIFT PUMP IS ON MAXIMUM LIFT, IT WILL NOT BE POSSIBLE TO OPERATE THE HAND PRIMER. IF SUCH A CONDITION ARISES, THE ENGINE SHOULD BE TURNED ONE COMPLETE REVOLUTION.
- 5. Loosen the pipe union nut at the fuel injection pump inlet (C), operate the priming lever on the lift pump and retighten when fuel, free from air bubbles, issues from around the threads.
- 6. Loosen two of the fuel injection line nuts.
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WORKING NEAR THE ENGINE WHILE THE ENGINE IS RUNNING COULD RESULT IN PERSONAL INJURY. A PERSON SHOULD BE AT THE CONTROLS AT ALL TIMES SO THE ENGINE CAN BE SHUT DOWN IMMEDIATELY IF SOMETHING GOES WRONG. |
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- 7. Turn the engine until fuel, free from air bubbles, issues from both line nuts.
- 8. SHUT THE ENGINE DOWN and tighten the line nuts.
NOTE: IF, AFTER BLEEDING THE FUEL SYSTEM, THE ENGINE RUNS SATISFACTORILY FOR A FEW MOMENTS AND THEN THE SAME SYMPTOMS RECUR AND WHEN CHECKED THE SYSTEM IS FOUND TO BE FULL OF AIR; THEN A LEAK ON THE SUCTION SIDE OF THE FUEL SYSTEM IS INDIAVSED.
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DIESEL FUEL IS VOLATILE AND COULD IGNITE OR EXPLODE, CAUSING SERIOUS BURNS AND INJURIES FROM FLYING OBJECTS. NEVER SMOKE OR HAVE AN OPEN FLAME WHILE WORKING ON THE FUEL SYSTEM. |
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To bleed systems with a Bosh fuel pump, SHUT THE ENGINE DOWN, then:
- 1. Loosen the vent screw on top of the fuel filter (D).
- 2. Loosen the inlet connection on the fuel pump (A).
- 3. Loosen the outlet connection on the fuel pump (B).
NOTE: IF THE CAM ON THE ENGINE CAMSHAFT OPERATING THE FUEL LIFT PUMP IS ON MAXIMUM LIFT, IT WILL NOT BE POSSIBLE TO OPERATE THE HAND PRIMER. IF SUCH A CONDITION ARISES, THE ENGINE SHOULD BE TURNED ONE COMPLETE REVOLUTION.
- 4. Operate the priming lever on the fuel lift pump until fuel, free from air, issues from the fuel filter venting point (D). Tighten the vent screw.
- 5. Continue to operate the lift pump until fuel, free from air, issues from the inlet connection on the fuel pump (A). Tighten the inlet connection.
- 6. Continue to operate the lift pump until fuel, free from air, issues from the outlet connection on the fuel pump (B). Tighten the connection.
- 7. Thoroughly clean the top of the fuel pump around the center plug (C) in the hydraulic head.
- 8. Loosen the plug a MAXIMUM of half a turn - no more.
- 9. Operate the priming lever of the lift pump until fuel, free from air, issues from around the plug.
- 10. Tighten the plug.
- 11. Loosen two of the fuel injection line nuts.
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WORKING NEAR THE ENGINE WHILE THE ENGINE IS RUNNING COULD RESULT IN PERSONAL INJURY. A PERSON SHOULD BE AT THE CONTROLS AT ALL TIMES SO THE ENGINE CAN BE SHUT DOWN IMMEDIATELY IF SOMETHING GOES WRONG. |
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- 12. Turn the engine until fuel, free from air bubbles, issues from both line nuts.
- 13. SHUT THE ENGINE DOWN and tighten the line nuts.
NOTE: IF, AFTER BLEEDING THE FUEL SYSTEM, THE ENGINE RUNS SATISFACTORILY FOR A FEW MOMENTS AND THEN THE SAME SYMPTOMS RECUR AND WHEN CHECKED THE SYSTEM IS FOUND TO BE FULL OF AIR; THEN A LEAK ON THE SUCTION SIDE OF THE FUEL SYSTEM IS INDIAVSED.