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Home >> Ford >> 2021 >> Bronco Wildtrak, 4D Utility >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Engine - 2.3L ECOBOOST (199KW/270PS)) >> General Procedures >> Balance Shaft Backlash >> Check

Balance Shaft Backlash: Check

WARNING: This page is about a different variant/trim than selected.
  1. Install the special tool and rotate the crankshaft slowly clockwise until the crankshaft balance weight is up against the Crankshaft TDC Timing Peg. The engine is now at TDC. Use Special Service Tool: 303-507 Timing Peg, Crankshaft TDC.
    GFD623943Courtesy of FORD MOTOR COMPANY
  2. Mark the balancer unit and shafts on the top for reference that the balancer unit is at TDC.
    GFD623944Courtesy of FORD MOTOR COMPANY
  3. Remove the bolts and the oil outlet tube.
    GFD623945Courtesy of FORD MOTOR COMPANY
  4. Inspect the oil outlet tube O-ring seals and replace if damaged.
    GFD623946Courtesy of FORD MOTOR COMPANY
    1. Remove the oil inlet tube-to-bracket bolt.
    2. Remove the bolt and the oil inlet tube bracket.
    3. Remove the bolts and the oil inlet tube.
    GFD623947Courtesy of FORD MOTOR COMPANY
  6. Inspect the oil inlet tube O-ring seals and replace if damaged.
    GFD623948Courtesy of FORD MOTOR COMPANY
  7. NOTE: Due to the precision interior construction of the balancer unit, it should not be disassembled.

    Remove the bolts and the balance unit.

    GFD623949Courtesy of FORD MOTOR COMPANY
  8. Remove the adjustment shims from the seat faces of the balancer unit.
    GFD623950Courtesy of FORD MOTOR COMPANY
    1. Visually inspect the balancer unit gear for damage.
    2. Verify that the shaft turns smoothly.

    • If there is any damage or malfunction, replace the balancer unit.

    GFD623951Courtesy of FORD MOTOR COMPANY
  10. Install the master adjustment shims (No. 50) on the seat faces of the balancer unit.
    GFD623950Courtesy of FORD MOTOR COMPANY
  11. With the balancer unit shaft marks at the TDC position, slowly install the balancer unit to the cylinder block to avoid interference between the crankshaft drive gear and the balancer unit driven gear.
    GFD623952Courtesy of FORD MOTOR COMPANY
  12. Install the bolts and tighten in sequence shown.

    Torque: Stage 1: 27 lb.ft (36 Nm) Stage 2: 60 deg.

    Fig 1: Balancer Unit Bolts Tightening Sequence
    GFD623953Courtesy of FORD MOTOR COMPANY
  13. Loosen the bolts.
    GFD623949Courtesy of FORD MOTOR COMPANY
  14. Tighten the bolts in sequence shown.

    Torque: Stage 1: 133 lb.in (15 Nm) Stage 2: 45 deg.

    Fig 2: Balancer Unit Bolts Tightening Sequence
    GFD623953Courtesy of FORD MOTOR COMPANY
  15. Remove Special Service Tool: 303-507 Timing Peg, Crankshaft TDC.
    GFD623954Courtesy of FORD MOTOR COMPANY
  16. Rotate the crankshaft to confirm that there are no meshing problems between the balancer unit gear and the crankshaft gear.
    GFD623955Courtesy of FORD MOTOR COMPANY
  17. Install the special tool and rotate the crankshaft slowly clockwise until the crankshaft balance weight is up against the Crankshaft TDC Timing Peg. The engine is now at TDC. Use Special Service Tool: 303-507 Timing Peg, Crankshaft TDC.
    GFD623943Courtesy of FORD MOTOR COMPANY
  18. Remove Special Service Tool: 303-507 Timing Peg, Crankshaft TDC.
    GFD623954Courtesy of FORD MOTOR COMPANY
  19. NOTE: Measure the backlash and verify that it is within specified range at all of the following 6 positions: 10 degrees, 30 degrees, 100 degrees, 190 degrees, 210 degrees and 280 degrees. It will be necessary to reset the measuring equipment between measurements.
    NOTE: The measurement must be taken with the Dial Indicator Gauge with Holding Fixture, a 5-mm Allen wrench and worm clamp set up as shown. Mark the Allen wrench with a file 20 mm (0.79 in) above the driven gear top surface. Make sure the worm clamp and Allen wrench are not touching the balance shaft housing.

    • NOTE: Make sure the worm clamp and Allen wrench are not touching the balance shaft housing.

      Install the 5-mm Allen wrench and tighten worm clamp as shown.

    • Mark the Allen wrench with a file 20 mm (0.79 in) above the driven gear top surface.

    • Install the balance shaft preload tool and bolts as shown. Use Special Service Tool: 303-1688 Preload Tool, Balance Shaft.

    • Install and position the dial indicator gauge with holding fixture on the Allen wrench 20 mm (0.79 in) as shown. Use Special Service Tool: 100-002 (TOOL-4201-C) Holding Fixture with Dial Indicator Gauge.

    • Rotate the crankshaft clockwise and measure the backlash at all of the following 6 positions: 10 degrees, 30 degrees, 100 degrees, 190 degrees, 210 degrees and 280 degrees.

    GFD623956Courtesy of FORD MOTOR COMPANY
  20. Using the backlash measurement, select the proper shims from the Adjustment Shim Selection Table.

    1. Backlash
    2. Selection shim (No.)
    3. Shim thickness

    GFD623957Courtesy of FORD MOTOR COMPANY
  21. Remove the bolts and the balance unit.
    GFD623949Courtesy of FORD MOTOR COMPANY
  22. Remove the master adjustment shims (No. 50) from the balancer unit.
    GFD623950Courtesy of FORD MOTOR COMPANY
  23. Install the selected adjustment shims on the seat faces of the balancer unit from the chart above.
    GFD623950Courtesy of FORD MOTOR COMPANY
  24. Install the special tool and rotate the crankshaft slowly clockwise until the crankshaft balance weight is up against the Crankshaft TDC Timing Peg. The engine is now at TDC. Use Special Service Tool: 303-507 Timing Peg, Crankshaft TDC.
    GFD623943Courtesy of FORD MOTOR COMPANY
  25. With the balancer unit shaft marks at the TDC position, slowly install the balancer unit to the cylinder block to avoid interference between the crankshaft drive gear and the balancer unit driven gear.
    GFD623952Courtesy of FORD MOTOR COMPANY
  26. Install the bolts and tighten in sequence shown below.

    Torque: Stage 1: 133 lb.in (15 Nm) Stage 2: 45 deg.

    Fig 3: Balancer Unit Bolts Tightening Sequence
    GFD623953Courtesy of FORD MOTOR COMPANY
  27. Remove Special Service Tool: 303-507 Timing Peg, Crankshaft TDC.
    GFD623954Courtesy of FORD MOTOR COMPANY
  28. NOTE: Measure the backlash and verify that it is within specified range at all of the following 6 positions: 10 degrees, 30 degrees, 100 degrees, 190 degrees, 210 degrees and 280 degrees. It will be necessary to reset the measuring equipment between measurements.
    NOTE: The measurement must be taken with the Dial Indicator Gauge with Holding Fixture, a 5-mm Allen wrench and worm clamp set up as shown. Mark the Allen wrench with a file 20 mm (0.79 in) above the driven gear top surface. Make sure the worm clamp and Allen wrench are not touching the balance shaft housing.

    • NOTE: Make sure the worm clamp and Allen wrench are not touching the balance shaft housing.

      Install the 5-mm Allen wrench and tighten worm clamp as shown.

    • Mark the Allen wrench with a file 20 mm (0.79 in) above the driven gear top surface.

    • Install the balance shaft preload tool and bolts as shown. Use Special Service Tool: 303-1688 Preload Tool, Balance Shaft.

    • Install and position the dial indicator gauge with holding fixture on the Allen wrench 20 mm (0.79 in) as shown. Use Special Service Tool: 100-002 (TOOL-4201-C) Holding Fixture with Dial Indicator Gauge.

    • Rotate the crankshaft clockwise and measure the backlash at all of the following 6 positions: 10 degrees, 30 degrees, 100 degrees, 190 degrees, 210 degrees and 280 degrees.

    • If the backlash exceeds the specified range of 0.040 to 0.140 mm (0.00157 to 0.0055 in), install a new balancer unit and repeat the procedure.

    GFD623956Courtesy of FORD MOTOR COMPANY
  29. After the special tools are removed, remove the worm clamp and Allen wrench. Remove Special Service Tool: 100-002 (TOOL-4201-C) Holding Fixture with Dial Indicator Gauge., 303-1688 Preload Tool, Balance Shaft.
    GFD623958Courtesy of FORD MOTOR COMPANY
  30. Install the special tool and rotate the crankshaft slowly clockwise until the crankshaft balance weight is up against the Crankshaft TDC Timing Peg. The engine is now at TDC. Use Special Service Tool: 303-507 Timing Peg, Crankshaft TDC.
    GFD623943Courtesy of FORD MOTOR COMPANY
  31. Lubricate the oil inlet tube O-ring seals with clean engine oil.
    GFD623959Courtesy of FORD MOTOR COMPANY
    1. Install the oil inlet tube and the bolts.

      Torque: 97 lb.in (11 Nm)

    2. Install the oil inlet tube bracket and the bolt.

      Torque: 97 lb.in (11 Nm)

    3. Install the oil inlet tube-to-bracket bolt.

      Torque: 97 lb.in (11 Nm)

    GFD623960Courtesy of FORD MOTOR COMPANY
  33. Lubricate the oil outlet tube O-ring seals with clean engine oil.
    GFD623961Courtesy of FORD MOTOR COMPANY
  34. Install the oil outlet tube and the bolts.

    Torque: 97 lb.in (11 Nm)

GFD623945Courtesy of FORD MOTOR COMPANY
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