Timing Chain Component (LH) Installation Note

Verify that the crankshaft keyway is at 11 o'clock position.

Fig 1: Verifying That Crankshaft Keyway Is At 11 O'Clock Position
Courtesy of MAZDA MOTORS CORP.
Position the mark on the intake camshaft to 9 o'clock position.
Position the mark on the exhaust camshaft to 12 o'clock position.
NOTE:
- Install the timing chain by aligning the colored links on the timing chain with the marks on the timing sprockets.
Fig 2: Positioning Mark On Exhaust Camshaft To 12 O'Clock Position
Courtesy of MAZDA MOTORS CORP.
Install the timing chain (LH) in the following order.
1. Timing chain crankshaft sprocket
2. Chain guide
3. Timing chain
4. Tensioner arm
NOTE:
- If timing marks in the timing chains are not evident, use a permanent-type marker to mark the crankshaft and camshaft timing marks on the timing chain.
1. Mark any link to use as the crankshaft timing mark.
2. Count 29 links from the crankshaft timing mark and mark as the exhaust camshaft sprocket timing mark.
3. Continue counting to 42 mark the link as the intake camshaft sprocket timing mark.
  CAUTION:
  - Install the camshaft journal thrust caps last, or damage to the thrust caps may occur.
  Fig 3: Installing LH Timing Chain
  Courtesy of MAZDA MOTORS CORP.
  
  Fig 4: Identifying Timing Chain Links
  Courtesy of MAZDA MOTORS CORP.
Tighten the bearing caps evenly in the order shown in several passes.
NOTE:
- After adjusting the camshaft end play using the thrust caps 1L and 5L, tighten the other bearing caps.
Fig 5: Identifying Tightening Sequence Of LH Bearing Caps
Courtesy of MAZDA MOTORS CORP.