Installing Front Rotor Housing

NOTE: Front and rear rotor housings are not interchangeable. Be sure they are installed in correct sequence.

Fig 1: Applying Sealing Agent to Rotor Assembly

Courtesy of MAZDA MOTORS CORP.

1. Apply sealing agent to front side of front rotor housing in areas shown in Fig 1. Do not use cooling system sealers.
   Fig 2: Installing Protectors for Inner Sealing Rubbers

   Courtesy of MAZDA MOTORS CORP.
2. To provide greater durability to sealing rubbers, install a protector behind each inner sealing rubber, (Fig. 22).  Install new "O" ring, sealing rubbers and protector in front side of rotor housing. Apply a light coating of petroleum jelly to hold them in place.
   Fig 3: Positioning Inner Sealing Rubber

   Courtesy of MAZDA MOTORS CORP.
   NOTE: Inner sealing rubber is square type. The wider white line of sealing rubber should face toward combustion chamber and seam of rubber should be placed as shown in Fig 3. Do not stretch sealing rubbers.
3. Invert front rotor housing, being careful of seals, and install it on front housing. Apply engine lubricant to dowels and insert them through front rotor housing into front housing. Install new "O" rings, sealing rubbers and protector to rear side of front housing.
4. Insert apex seal springs, confirming spring direction, Figure. Install corner seal springs and corner seals in their respective grooves. Install side seal springs and side seals. Fit side pieces to their original positions. Apply engine oil to all seals. Apply sealant to rear side of front rotor housing in areas shown in Fig 1. Apply engine oil to sliding surfaces of front rotor housing.