Sistema de Inyeccion de Combustible 320B

8/13/2019 Sistema de Inyeccion de Combustible 320B

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GovernorSMCS - 1286-015; 1286-016; 1286-076; 1286-077

Separate Governor From Fuel Injection Pump HousingStart By:

a. Remove fuel injection pump housing and governor

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Read and understand publication NEHS0622 prior to separation of the governor from the fuel injectionpump housing.

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NOTE: Before separation of the governor from the fuel injection pump housing, remove all dirt and greasefrom the governor and the fuel injection pump housing.

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1. Mount the fuel injection pump housing and governor on Tools (B) and (C) as shown.

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2. If equipped, remove tag wire seal (1) from the governor housing.

3. Remove threaded cap (2) from the full load stopper bolt.

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4. Remove locknut (3) from full load stopper bolt.

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5. Remove threaded cap (5).

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6. Remove idling subspring (6).

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7. Remove four bolts (8) and washers.

8. Remove cover (7).

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9. Remove seal from cover (7)

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10. Use Tool (H) to remove torque control spring (9).

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11. Loosen two plugs (A) at top of governor cover. Loosen one bolt (B) on fuel shutoff lever, and loosen onbolt on control lever (C).

NOTE: These items are to be loosened at this time for removal later.


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12. Remove six screws (10).

NOTE: Top two screws are longer than the rest.

13. Lightly tap governor cover (11) with a wooden or plastic hammer to separate it from governor housing(12).

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14. Push link's leaf spring (13) from above with a screwdriver or similar tool a move the governor cover tothe left or right to separate the link from the control rack.

NOTICE

Take care not to bend link.

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15. Using long nose pliers, remove starting spring (26) from the spring eye. Governor cover (24) can nowbe removed. Remove the gasket between the governor cover and the governor housing.

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16. Install Tool (D) to the drive side coupling and remove round nut (15) and spring washer (16) with Tool(G).

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17. Use Tools (L) and (K) to remove flyweight (17) and woodruff key (18).

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NOTE: If the pump is to be disassembled, do not remove housing (12).

18. Remove six bolts (19) and one bolt (20).

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19. Lightly tap governor housing (12) with a wooden or plastic hammer to separate it from the fuelinjection pump housing. Check the gasket between the governor housing and the fuel injection pumphousing. If the gasket is damaged, replace with a new part.

Connect Governor To Fuel Injection Pump HousingNOTE: Before connecting the governor to the fuel injection pump housing, replace all gaskets, O-ring seals,and oil seals with new parts.

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1. Place a new gasket between the governor housing and the fuel injection pump housing. Put governorhousing (12) in position and secure with six bolts (19) and one bolt (20). Tighten bolts (19) to a torque of 7to 9 Nm (5 to 7 lb ft). Tighten bolt (20) to a torque of 15 to 18 Nm (11 to 13 lb ft).

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2. Install woodruff key (18) in its original position on the camshaft.

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3. Install flyweight (17), spring washer (16), and round nut (15). Use Tools (D) and (G) to tighten roundnut (15) to a torque of 49 to 59 Nm (36 to 44 lb ft).

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4. Install a new gasket on the governor housing and place governor cover (11) in position.

5. Use long nose pliers to connect starting spring (14) to the spring eye.


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6. Connect the link's leaf spring (13) to the control rack.

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7. Install six screws (10) to secure the governor cover to the governor housing. Tighten screws (10) to atorque of 7 to 9 Nm (5 to 7 lb ft).

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8. Install torque control spring (9). Hand tighten until final adjustment is accomplished on a test bench.After adjustment on test bench, use Tool (H) and tighten the torque control spring to a torque of 18 to 21Nm (13 to 15 lb ft).

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9. Install seal on cover (7).

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10. Install cover (7) with secure with four bolts. Tighten bolts to a torque of 7 to 9 Nm (5 to 7 lb ft).

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11. Install idling subspring (6).

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12. Install threaded cap (5).

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13. Install locknut (3) on full-load stopper bolt (4).

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14. Install threaded cap (2).

15. If necessary, install tag wire seal (1).

NOTE: Governor must be adjusted on test bench.

Disassemble GovernorStart By:

a. separate governor from fuel injection pump housing

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1. Remove start spring (1).

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2. Loosen nut (2).

3. Make sure threaded bolt (3) is not damaged.

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4. Loosen bolt (4).

5. Remove control lever (5).

NOTE: Be careful not to lose any of the loosened components under the control lever.

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6. Remove woodruff key (6), washer (7), collar (8), and shims (9).

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7. Remove threaded plugs (10) and (11).

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8. Remove tension lever shaft (12).

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9. Pull tension lever (14) to the top of the governor cover as shown and disconnect it from governor spring(13).

10. Remove tension lever (14).

11. Remove governor spring (13) from the swivel lever (15).

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12. Use a screwdriver or similar tool to remove retaining rings (16 and 17).

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13. Tap lightly with a hammer and punch to remove bushings (18 and 19). Remove swivel lever (16) fromthe governor.

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14. Check the condition of the O-ring seals (20) on bushings (18 and 19) for damage.

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15. Remove swivel lever (21) from the governor.

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16. Remove guide lever assembly (22) from the governor cover.

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17. Check the face of screw (23) in governor cover. Remove if damaged.

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18. Remove bolt (24) and lever assembly (25). Replace O-ring under lever.

NOTE: Watch for shims, washers and other small parts.

Assemble Governor

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1. Install O-ring under lever assembly (25).

2. Install lever assembly (25) and bolt (24).

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3. Install screw (23) in governor cover.

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4. Install guide assembly (22) in the governor cover.

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5. Install swivel lever (21) in the governor cover.

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6. Install O-ring seals (20) on bushings (18 and 19).

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7. Install bushings (18 and 19).

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8. Install retaining rings (16 and 17).

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9. Install governor spring (13) on swivel lever (15).

10. Install tension lever (14).

11. Connect governor spring (13) to tension lever (14).

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12. Install tension lever shaft (12).


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13. Install threaded plugs (10) and (11).

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14. Install woodruff key (6), washer (7), collar (8), and shims (9).

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15. Install control lever (5) and tighten bolt (4).

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16. Tighten nut (2) on threaded bolt (3).

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17. Install start spring (1).

End By:

a. connect the governor to the fuel injection pump housing


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Fuel Pump HousingSMCS - 1253-015; 1253-016

Disassemble Fuel Injection Pump HousingStart By:

a. separate governor from fuel injection pump housing

NOTE: Clean the outside of the fuel injection pump before disassembly and drain the pump camshaftchamber.

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1. Remove three nuts (1) and washers.

2. Remove fuel priming and transfer pump (2). For details on disassembly and assembly of the fuel primingand transfer pump see the topic "Disassemble and Assemble Fuel Priming and Transfer Pump" in thismodule.

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3. Check O-ring seal (3) on fuel priming and transfer pump (2). Replace if necessary.

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4. Remove two bolts (4) and washers.

5. Remove cover (5). Remove the gasket on the back of cover (5).

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6. Install Tool (D) to rotate the camshaft until the tappets are in the top center position.

7. Insert Tool (N), (tappet holders) into the small holes (6) on the tappet body to separate the tappet fromthe camshaft.

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8. Rotate the fuel injection pump housing on its side and remove six screws plugs (7).


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12. Tap the camshaft lightly from the governor end with a soft hammer to loosen bearing cover (10).Remove bearing cover (10).

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13. If necessary, use Tool (F) to remove bearing race (11) and oil seal (11) from bearing cover (10).

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14. Remove camshaft (14) together with center bearing (13) from the drive side of the fuel injection pumphousing (12).

NOTE: Check the camshaft surfaces for damage or wear. Also, check the camshaft threads and the keygroove for damage. Check the areas that contact the oil seal for damage or wear.


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15. Remove center bearing (13) from camshaft (14).

NOTE: Check the area of the center bearing that contacts the camshaft for wear or damage. Replace thebearing if necessary.

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16. If necessary, remove bearings (15 and 16) from camshaft (14) with a suitable press as shown.

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17. Remove bearing seat (17) and washers (18) from between camshaft (14) and bearings (15 and 16).

NOTE: Now the governor housing can be removed, bearing race inspected, and gasket removed.


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18. Position the pump on its side. Insert Tool (M) into the bottom plug hole. Push the tappet with Tool (M)and remove the tappet holder, Tool (N).

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19. Insert Tool (Q) through the bearing cover hole, secure tappet (19) and remove it from the fuel injectionpump housing.

NOTE: Replace the tappets if they are damaged or worn.

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NOTE: Before plungers are removed make sure the control rack is in the center. See Note after Step 29 onPage 47.

20. Use Tool (P) to remove plunger (21) together with lower spring seat (20).

NOTICE

The plungers must not contact other parts during removal. Put the plungers in clean fuel oil in their order of removal. Replace the plungers if they are damaged or worn.

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21. Remove plunger spring (24), upper spring seat (23) and control sleeve (22).

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22. Components previously removed. Check each part carefully. Replace them if they are damaged or worn.

23. Stand the fuel injection pump housing upright.

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24. Remove bolt (25) and washer.

25. Remove delivery valve holder lock plate (26).

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26. Carefully remove delivery valve holder (27) and the O-ring.

NOTE: There is a slight spring pressure under the delivery valve holder. Be careful not to lose any of thecomponents when the delivery valve holder is removed.

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Assemble Fuel Injection Pump Housing

NOTICE

Once removed, gaskets, O-rings, and oil seals must not be reused. New ones must be used whenassembling the fuel injection pump housing.

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1. Install plunger barrel (1) so that the locating pins in the fuel injection pump housing are correctlypositioned in the grooves in the plunger barrels.

NOTE: Ensure that the plunger barrel cannot be rotated manually.

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2. Install delivery valve assembly (2). Always install a new copper seal (2A).


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3. Install delivery valve spring (4) and stopper (3).

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4. Put a new O-ring seal on delivery valve holder (5) and install the delivery valve holder.

NOTE: The following procedure is for the tightening of the delivery valve holder.

a. Tighten the delivery valve holder to a torque of 39 5 Nm (29 4 lb ft).

b. Loosen the delivery valve holder.

c. Retighten the delivery valve holder to a torque of 39 5 Nm (29 4 lb ft).

d. Loosen the delivery valve holder.

e. Finally tighten the delivery valve holder to a torque of 39 5 Nm (29 4 lb ft).

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5. Insert control rack (6) into the fuel injection pump housing.

6. Screw the guide screw into the back of the fuel injection pump housing and ensure the control rackmoves freely.

NOTE: The line on the control rack marked X must be flush with the threaded plug on the end of the fuelinjection pump housing to correctly position the control rack.

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7. Install control sleeve (7) with the control pinion slit facing out as shown.

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8. Install upper spring seat (8) and plunger spring (9).

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9. Use Tool (P) to insert plunger (10) together with lower spring seat (11) into the plunger barrel. Ensurethe helix marked Y is facing up as shown.

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10. Hold the tappet (not shown) with Tool (Q).

11. Align the tappet guide with the fuel injection pump housing guide groove and insert the tappet.

12. Use Tool (M) to push the tappet and align the plunger flange with the control sleeve groove. When theplunger is completely inserted into the barrel and sleeve, insert Tool (N) (tappet holder) into the small holeon the tappet body.

13. Use Tool (E) to install the washers, bearing seat, and the bearings in their original position on camshaft(16).

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14. Place a new gasket between the governor housing and the fuel injection pump housing. Put governorhousing (12) in position and secure with six bolts (14) and one bolt (13). Tighten bolts (14) to a torque of 7to 9 Nm (5 to 7 lb ft). Tighten bolt (13) to a torque of 15 to 18 Nm (11 to 13 lb ft).

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15. Coat the inside surface of center bearing (15) with grease and position it on camshaft (16).

16. Insert the camshaft and the center bearing into the fuel injection pump housing.

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17. Secure the center bearing with two screws (17).


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18. Install Tool (J) (seal protector) on end of the camshaft.

19. If the bearing race and oil seal were removed from bearing cover (19), replace them with new parts.

NOTE: Apply a small amount of grease to the seal guide and the oil seal lip.

20. Install bearing cover (19). Make sure to use a new gasket (18).

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21. Install four bolts (20) to hold bearing cover (19). Tighten bolts (20) to 7 to 9 Nm (5 to 7 lb ft).

22. Remove Tool (J) (seal protector).

NOTE: The drain holes in cover (19) are at the top.

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23. Install Tool (D) and check endplay as shown. Endplay is .02 to .07mm.

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24. Rotate the camshaft with Tool (D) until the tappet holders, Tool (D), can be removed.

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25. Install delivery valve holder lock plate (21) and secure with bolt (22). Tighten bolt (22) to a torque of 4to 5 Nm (35 to 45 lb in).


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26. Install cover (24) and secure with two bolts (23) and washers.

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27. Install fuel priming and transfer pump (25) with three nuts (26).

28. Instal threaded plugs (27). Tighten threaded plugs (27) to a torque of 55 to 75 Nm (40 to 55 lb ft).

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End By:

a. connect governor to the fuel injection pump housing


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Fuel Priming and Transfer PumpSMCS - 1256-015; 1256-016; 1258-015; 1258-016

Disassemble Fuel Priming and Transfer Pump

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1. Remove priming pump (1).

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2. Remove check valve (2), and spring (3) and O-ring seal (4).

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3. Remove outlet fitting (5).

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4. Remove check valve (6), spring (7) and O-ring seal (8).

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5. Remove inlet fitting (9).

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6. Remove inlet screen (10), gasket (11), banjo fitting (12) and gasket (13).

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7. Remove plug (14), spring (15), piston (16) and gasket (17).

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8. Remove snap ring (18) and remove roller follower (19).

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9. Remove shaft (20).

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10. Remove lip-type seal (21).

Assemble Fuel Priming and Transfer Pump

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1. Install lip-type seal (21).

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2. Install shaft (20).

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3. Install roller follower (19) and snap ring (18).


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4. Install gasket (17), piston (16), spring (15) and plug (14).

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5. Install gasket (13), banjo fitting (12), gasket (11) and inlet screen (10).

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6. Install inlet fitting (9).


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10. Install priming pump (1).

Sistema de Inyeccion de Combustible 320B

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