Hydraulic Variable Valve Timing Actuator and Exhaust Camshaft Component Installation Note

WARNING: This page is about a different variant/trim than selected.

Apply SAE 90 gear oil or equivalent, or engine oil to the positions shown in the figure.
CAUTION:
- Apply 0.05 ml {0.05 cc, 0.003 in3} or less of oil to area A in the figure.
Courtesy of MAZDA MOTORS CORP.
Apply gear oil (SAE 90 or equivalent) or engine oil to the thrust surface (both surfaces front and back) of the front journal on the exhaust camshaft.
NOTE:
- If oil is applied to the front camshaft cap, oil should not be applied to the thrust surface of the front journal.
Remove the rope suspending the timing chain on the exhaust side.
While aligning the mark on the timing chain placed during removal with the one on the hydraulic variable valve timing actuator, place the exhaust camshaft component on the cylinder head.

Courtesy of MAZDA MOTORS CORP.
Apply SAE 90 gear oil or equivalent, or engine oil to the central area of each journal on the exhaust camshaft.

Courtesy of MAZDA MOTORS CORP.
Apply SAE 90 gear oil or equivalent, or engine oil to the thrust surface of the front camshaft cap.
NOTE:
- If oil is applied to the front journal thrust surface of the exhaust camshaft, oil should not be applied to the front camshaft cap.
Apply sealant (LOCHTE 962T, 518, 272 or equivalent) to the rear camshaft cap installation area on the exhaust side of the cylinder head or the rear camshaft cap on the exhaust side.
NOTE:
- To prevent engine oil leakage, apply sealant to the rear camshaft cap installation area on the exhaust side of the cylinder head or the rear camshaft cap on the exhaust side, and seal the journal.
Courtesy of MAZDA MOTORS CORP.
CAUTION:
- Do not spill sealant on the journal.
  Sealant agent bead width
  
  1-3 mm {0.04-0.11 in}
Install the camshaft caps in the marked number order, and temporarily tighten the camshaft cap installation bolts in two or three passes evenly.
Tighten the camshaft cap installation bolts in two steps in the order shown in the figure.

Fig 1: Camshaft Caps Bolts Tightening Sequence
Courtesy of MAZDA MOTORS CORP.

Tightening torque

Step 1: 3.0-6.0 N.m {31-61 kgf.cm, 27-53 in.lbf}

Step 2: 8-11 N.m {82-112 kgf.cm, 71-97 in.lbf}