Step 1: Remove the serpentine belt.
- Loosen the serpentine belt tensioner pulley bolt.
- Remove the serpentine belt from the pulleys.
Step 2: Remove the water pump pulley.
- Loosen the water pump pulley bolts.
- Remove the water pump pulley.
Step 3: Remove the timing chain cover.
- Remove the timing chain cover bolts.
- Remove the timing chain cover.
Step 4: Align the timing marks.
- Turn the crankshaft until the timing marks on the crankshaft sprocket and camshaft sprockets are aligned.
Step 5: Remove the old timing chain.
- Remove the timing chain tensioner.
- Remove the old timing chain.
Step 6: Install the new timing chain.
- Install the new timing chain on the crankshaft sprocket and camshaft sprockets.
- Make sure that the timing marks are still aligned.
Step 7: Install the timing chain tensioner.
- Install the timing chain tensioner.
- Tighten the tensioner bolt to the specified torque.
Step 8: Install the timing chain cover.
- Install the timing chain cover.
- Tighten the timing chain cover bolts to the specified torque.
Step 9: Install the water pump pulley.
- Install the water pump pulley.
- Tighten the water pump pulley bolts to the specified torque.
Step 10: Install the serpentine belt.
- Install the serpentine belt on the pulleys.
- Tighten the serpentine belt tensioner pulley bolt to the specified torque.
Diagram:
[Image of the 1997 Ford Explorer 4.0 SOHC Automatic timing chain and cover]
Notes:
- This procedure is for a 1997 Ford Explorer with a 4.0 SOHC engine. The procedure may vary for other models and years.
- It is important to align the timing marks correctly before installing the new timing chain. If the timing marks are not aligned, the engine will not run properly.
- It is also important to use the correct timing chain tensioner. If the tensioner is not correct, the timing chain may skip or break.
