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Timing Chain & Sprockets Replacing on 4.2L Ford Truck & Lincoln?

Timing Chain Cover, Chain & Sprockets
Its for 4.2L engine model.

F150 1/2 ton P/U 2WD/ 4WD
F250 Super Duty P/U 2WD/4WD
F350 Super Duty P/U 2WD/4WD
F450 Super Duty P/U 2WD/4WD
F550 Super Duty P/U 2WD/4WD
And Lincoln Mark LT car models.

The procedure is similar for both ford and Lincoln car models:-----
Timing Chain Cover, Chain & Sprockets 
REMOVAL & INSTALLATION Details are mentioned below:--------

  1. Before servicing the vehicle, refer to the Precautions Section.
  2. Remove the coolant pump.

     3.   Remove the camshaft synchronizer:
  1. Disconnect the battery ground cable.
  2. Drain the engine cooling system.
    CAUTION
    The No. 1 cylinder must be set on top dead center (TDC) of the compression stroke or the synchronizer assembly will not be installed correctly.


    CAUTION
    Do not turn the crankshaft or camshaft during the removal and installation procedure or the fuel system timing will be out of time with the engine and possibly cause engine damage.
  3. Rotate the crankshaft until the No. 1 cylinder is at TDC of the compression stroke.
  4. Remove the bolt and position the heater outlet tube aside.
  5. Disconnect the camshaft position (CMP) sensor electrical connector.
  6. Remove the bolts and the CMP sensor.
  7. Remove the bolt and washer assembly and remove the camshaft synchronizer.

See the diagram shown below for more help:----

4.2L Engine

image 
Fig. Exploded view of the engine front cover and components
  1. Before servicing the vehicle, refer to the Precautions Section.
  2. Remove the coolant pump. 

    image
    Fig. Exploded view of the camshaft synchronizer and components


  1. Remove the crankshaft front seal.
  2. Disconnect the crankshaft position (CKP) sensor electrical connector.
  3. Detach the wiring harness retainers from the engine front cover stud bolts.
  4. Drain the engine oil. Install the drain plug when finished. Tighten to 17 ft. lbs. (23 Nm).
  5. Remove the oil filter.
  6. Remove the 2 oil pan-to-engine front cover bolts.
  7. If equipped, remove the retaining nut and position the transmission coolant tube support bracket aside.
  8. Remove the bolt and the accessory drive belt tensioner.

    Click image to see an enlarged view
    Fig. Remove the bolt and the accessory drive belt tensioner
  9. Loosen the 4 power steering pump bolts and slide the power steering pump out approximately 25 mm (1 in).
  10. Remove the bolt and the A/C compressor and power steering pump bracket brace.
    CAUTION
    The cap screw is concealed by the oil pump housing. Failure to remove this retainer will result in damage to the engine front cover.
  11. Remove the bolt and the stud bolts. Slide the engine front cover from the studs. Remove and discard the gasket.
    NOTE
    There are 2 different studs. Note the locations of the studs for installation reference.
  12. Remove the 4 studs.
  13. Remove the camshaft synchronizer drive gear:
    1. Remove the bolt.
    2. Remove the camshaft synchronizer drive gear.
  14. Rotate the crankshaft until the timing marks and keyways align.

    Click image to see an enlarged view
    Fig. Remove the bolt and the accessory drive belt tensioner
  15. Compress and install a retaining pin to hold the timing chain tensioner.
  16. Remove the camshaft sprocket, the crankshaft sprocket and the timing chain as an assembly.
  17. Remove the bolts and the timing chain tensioner.
To install:
  1. Install the timing chain tensioner and the bolts. Tighten to 9 ft. lbs. (12 Nm).
  2. If necessary, retract the tensioner pad retracting mechanism and insert a retaining pin.
  3. Rotate the crankshaft so the No. 1 piston is at top dead center (TDC) and the key is at the 12 o'clock position.
  4. Turn the camshaft sprocket so that the timing mark is at the 12 o'clock position and is lined up with the timing mark on the balance shaft at the 6 o'clock position.
  5. Install the timing chain, the camshaft sprocket and the crankshaft sprocket.
  6. Make sure that the timing marks and the keyways are aligned.
  7. Remove the retaining pin.
  8. Install the camshaft synchronizer drive gear and the bolt. Tighten to 33 ft. lbs. (45 Nm).
    CAUTION
    In order to prevent foreign material from contaminating the engine block or the engine front cover, it is necessary to seal the coolant and oil passages of both components. Failure to follow these directions will result in engine damage.


    CAUTION
    Do not use metal scrapers, wire brushes, power abrasive discs or other abrasive means to clean the sealing surfaces. These tools cause scratches and gouges which make leak paths. Use a plastic scraping tool to remove all traces of old sealant.
  9. Clean and inspect the engine block and engine front cover as follows:
    1. Pack the exposed portion of the oil pan with clean shop towels.
    2. Plug the oil and coolant passages.
    3. Clean the gasket surfaces. Use silicone gasket remover and metal surface prep.
    4. Using compressed air, remove any remaining foreign material from the engine block and front cover.
    5. Remove the shop towels from the oil pan.
    6. Remove the plugs or seals from the oil and coolant passages.
  10. Apply thread sealant to the threads on the studs and the cap screw.
  11. Install the engine front cover studs. Tighten to 62 inch lbs. (7 Nm).
    NOTE
    If the engine front cover is not secured within 4 minutes, the sealant must be removed and the sealing areas cleaned. To clean the sealing area, use silicone gasket remover and metal surface prep. Failure to follow this procedure can cause future oil leakage.
  12. Apply silicone gasket and sealant as shown.

    Click image to see an enlarged view
    Fig. Apply silicone gasket and sealant to the areas shown
  13. Install the engine front cover gasket.
    CAUTION
    The coolant pump and gasket must be installed at this time to correctly tighten all of the engine front cover fasteners in sequence.
  14. Install the engine front cover and coolant pump.
  15. Position the engine front cover and install the bolt, the stud bolts and the cap screw finger tight.
  16. Position a new coolant pump gasket and the coolant pump and install the fasteners finger tight.
  17. Tighten the fasteners in the sequence shown
    1. Tighten capscrew No. 12 to 89 inch lbs. (10 Nm).
    2. Tighten all other fasteners to 28 Nm (21 lb-ft).

      Click image to see an enlarged view
      Fig. Tighten the front cover screws in the sequence shown
  18. If equipped, position the transmission cooler tube bracket and install the nut. Tighten to 15 ft. lbs. (20 Nm).
  19. Install the accessory drive belt tensioner and the bolt. Tighten to 41 ft. lbs. (55 Nm).
  20. Install the 2 oil pan-to-engine front cover bolts. Tighten to 89 inch lbs. (10 Nm).
  21. Install a new oil filter.
  22. Connect the CKP sensor electrical connector.
  23. Attach the wiring harness retainers to the engine front cover stud bolts.
  24. Install the crankshaft front seal.
  25. Install the camshaft synchronizer:
    CAUTION
    After installation, do not loosen the synchronizer bolt and rotate the synchronizer assembly. The synchronizer assembly is not adjustable. Do not loosen the synchronizer bolt after the alignment tool has been removed in order to align the CMP sensor electrical connector for any reason. If the electrical connector is not in the correct position, the synchronizer assembly must be removed, the alignment tool and the assembly reinstalled if the engine has not been rotated from TDC of the compression stroke on the No. 1 cylinder.


    CAUTION
    Do not turn the crankshaft or camshaft during the removal and installation procedure or the fuel system timing will be out of time with the engine and possibly cause engine damage.


    CAUTION
    A synchronizer alignment gauge must be used during the installation of the synchronizer assembly. Failure to follow these procedures will result in the fuel system being out of time with the engine and possibly cause engine damage.

    1. Install the special tool on the camshaft synchronizer by rotating the tool until it engages the notch on the camshaft synchronizer housing.
      NOTE
      Coat the synchronizer drive gear with clean engine oil prior to installation.


      NOTE
      During installation, the arrow in the synchronizer alignment tool will rotate clockwise as the gears engage.
    2. Install the camshaft synchronizer so the arrow on the synchronizer alignment gauge is 54 degrees from the centerline of the engine.
    3. Install the camshaft synchronizer bolt and washer assembly. Tighten to 18 ft. lbs. (25 Nm).
    4. Install the CMP sensor and the bolts.
    5. Connect the CMP sensor electrical connector.
      NOTE
      Clean and inspect the heater tube O-ring seal. Install a new O-ring seal if necessary. Lubricate the O-ring seal with clean engine coolant.
    6. Position the heater outlet tube and install the bolt. Tighten to 89 inch lbs. (10 Nm).
  26. Position the coolant pump pulley and install the bolts. Tighten to 89 inch lbs. (10 Nm).
  27. Position the A/C compressor and power steering pump pulley bracket brace and install the 2 bolts and 2 nuts. Tighten the bolts to 35 ft. lbs. (48 Nm) and the nuts to 18 ft. lbs. (25 Nm).
    NOTE
    Slide the power steering pump in while tightening the front lower bolt, then tighten the rear lower and 2 upper bolts.
  28. Tighten the power steering pump bolts. Tighten to 18 ft. lbs. (25 Nm).
  29. Install the accessory drive belt.
  30. Install the cooling fan and fan shroud.
  31. Fill the engine with clean engine oil.
  32. Fill and bleed the cooling system.


These details will help.
Thanks.

FOR MORE HELP GO TO: ---

Car repair guide?

http://technoanswers.blogspot.in/2012/03/car-repair-guide.html


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