Camshaft Installation Note

1. As shown in the figure, apply gear oil (SAE No. 90 or equivalent) or engine oil to the center area of each journal of the cylinder head.
   Fig 1: Applying Gear Oil To Cylinder Head Journal Center Area

   Courtesy of MAZDA MOTORS CORP.
   CAUTION:

   • Apply 0.05 ml {0.05 cc, 0.003 in³ } or less of oil to journal No. 6.
2. Apply gear oil (SAE No. 90 or equivalent) or engine oil to the following locations of each camshaft.
   • Thrust surface of front journal
3. Install the camshaft with cylinder No. 1 cam aligned to the TDC position as shown in the figure.
   Fig 2: Installing Camshaft With Cylinder No. 1 To TDC Position

   Courtesy of MAZDA MOTORS CORP.
   NOTE:

   • The timing mark of SKYACTIV-G 2.5 is not completely parallel with the upper surface of the cylinder head.
4. As shown in the figure, apply gear oil (SAE No. 90 or equivalent) or engine oil to the center area of each journal of the camshaft.
   Fig 3: Applying Gear Oil To Camshaft Journal Center Area

   Courtesy of MAZDA MOTORS CORP.
5. Apply sealant agent (Loctite 962T) around journal No. 6 of the cylinder head or the exhaust-side rear camshaft cap.
   NOTE:

   • To prevent engine oil leakage, apply sealant around journal No. 6 of the cylinder head or the rear camshaft cap on the exhaust side, and seal the journal.
   Fig 4: Applying Sealant Around Journal No. 6 Of Cylinder Head And Rear Camshaft Cap On Exhaust Side

   Courtesy of MAZDA MOTORS CORP.
   CAUTION:

   • Verify that there is no sealant agent on the journal.

   Sealant agent bead width 

   • 0.5-1.5 mm {0.02-0.05 in}
6. Install the camshaft caps in the marked number order, and temporarily tighten the camshaft cap installation bolts in two or three passes evenly.
7. Tighten the camshaft cap installation bolts in two steps in the order shown in the figure.

Fig 5: Camshaft Cap Installation Bolts Tightening Sequence

Courtesy of MAZDA MOTORS CORP.

Tightening torque 

• First step: 3.0-6.0 N.m {31-61 kgf.cm, 27-53 in.lbf}
• Second step: 8-11 N.m {82-112 kgf.cm, 71-97 in.lbf}