Section 03-01A: Engine, 2.3L
1993 Mustang Workshop Manual
REMOVAL AND INSTALLATION

 CAUTION: Do not oil threads that require oil resistant or water resistant sealer.

When installing nuts or bolts, oil the threads with light-weight engine oil.

Camshaft Timing/Timing Belt Installation

 

Tools Required:

 

Removal and Installation

  1. Remove A/C belt, if equipped.
  1. Remove power steering belt.
  1. Remove water pump pulley.
  1. Remove crankshaft pulley.
  1. Remove timing belt outer cover retaining bolt and cover.



  1. Loosen the belt tensioner adjustment screw, position the Camshaft Belt Tensioner Tool T74P-6254-A or equivalent, as shown on the tension spring rollpin and release the belt tensioner. Tighten the adjustment screw to hold the tensioner in released position.
  1. Remove the bolts holding the timing sensor in place and pull the sensor assembly free of the dowel pin.
  1. Remove the crankshaft pulley, hub and belt guide.
  1. Remove the drive belt and inspect it for wear or damage. If the belt is damaged, replace it.
  1. Position the crankshaft sprocket to align with the TDC mark, and the camshaft sprocket to align with the camshaft timing pointer.
  1. Install the timing belt over the crankshaft sprocket and then counterclockwise over the auxiliary and camshaft sprockets. Align the belt fore-and-aft on the sprockets.

    NOTE: The spring cannot be used to set belt tension.

  1. Loosen the tensioner adjustment bolt to allow the tensioner to move against the belt. If the spring does not have enough tension to move the roller against the belt (the belt hangs loose), it may be necessary to manually push the roller against the belt and tighten the bolt.

    NOTE: To ensure the belt does not jump time during rotation in Step 13, remove one spark plug from each cylinder.

  1. Rotate crankshaft two complete turns in direction of normal rotation to remove the slack from the belt. To prevent rotation of crankshaft have a helper hold the crankshaft pulley. With a torque wrench turn camsprocket counterclockwise until torque reads 54 Nm (40 lb-ft). While holding the torque wrench tighten tensioner adjustment to 40-55 Nm (30-41 lb-ft) and pivot bolts 20-30 Nm (14-22 lb-ft). Check the alignment of the timing mark.
  1. Install the crankshaft belt guide.
  1. Install the timing sensor onto the dowel pin and tighten the two longer bolts to 20-30 Nm (14-22 lb-ft).

    Align the timing sensor as follows:

  1. Rotate the crankshaft 45 degrees (1/4 turn) counterclockwise and install the crankshaft pulley and hub assembly. Tighten the bolt to 155-205 Nm (114-151 lb-ft).
  1. Rotate the crankshaft 90 degrees (1/2 turn) clockwise so that the vane of the crankshaft pulley engages with the Crankshaft Hall Effect Sensor Positioner T89P-6316-A or equivalent. Tighten the two shorter sensor bolts to 20-30 Nm (14-22 lb-ft).



  1. Rotate the crankshaft 90 degrees (1/2 turn) counterclockwise and remove the sensor positioner.
  1. Rotate the crankshaft 90 degrees (1/2 turn) clockwise and measure the outer vane to sensor air gap. The air gap must be 0.458-0.996mm (0.018-0.039 inch).
  1. Install the timing belt outer cover and the spark plugs.




    Item Part Number Description
    1A — Camshaft Sprocket Retainer Bolt
    2 — Camshaft Sprocket Retainer Bolt Washer
    3 6256 Camshaft Sprocket
    4 6B260 Belt Guide Assy
    5 6251 Camshaft Assy
    6 6K230 Auxiliary Shaft Assy
    7 — Inner Timing Belt Cover Assy
    8 6256 Auxiliary Shaft Sprocket
    9 — Auxiliary Shaft Sprocket Retainer Bolt Washer
    10B — Auxiliary Shaft Sprocket Retainer Bolt
    11 6268 Timing Belt
    12C — Spring Retainer Bolt
    13D — Belt Tensioner Retainer Bolt
    14 — Belt Tensioner Spring
    15 6K254 Timing Belt Tensioner Assy
    16 6303 Crankshaft Assy
    17 6306 Crankshaft Sprocket Assy
    A Tighten to 70-95 Nm (52-70 Lb-Ft)
    B Tighten to 40-55 Nm (30-41 Lb-Ft)
    C Tighten to 38-54 Nm (28-40 Lb-Ft)
    D Tighten to 19-29 Nm (14-21 Lb-Ft)
  1. Install water pump pulley.
  1. Install crankshaft pulley.
  1. Install power steering and A/C belts. Refer to Section 03-05.
  1. Start engine. Check ignition timing. Refer to Powertrain Control/Emissions Diagnosis Manual.