FixVault

Timing Chain RH

NOTE: When replacing a single part, perform the work with the engine assembly installed to body.
  1. Remove the chain cover. Refer to MECHANICAL(W/O STI)>CHAIN COVER>REMOVAL .
  2. Using ST and by turning the crankshaft, align the alignment marks of crank sprocket, intake cam sprocket RH and exhaust cam sprocket RH to the positions as shown in the figure.
    NOTE: If the alignment marks are aligned to the positions as shown in the figure, the crankshaft key is located at six o'clock position.
    ST  18252AA000  CRANKSHAFT SOCKET 
    G10266774Courtesy of SUBARU OF AMERICA, INC.
  3. Push down the chain lever tensioner RH, and with a 2.5 mm (0.0984 in) dia. stopper pin or a 2.5 mm dia. hex wrench inserted into the stopper pin hole in the chain tensioner RH, secure the plunger (A).
    G10266775Courtesy of SUBARU OF AMERICA, INC.
  4. Remove the chain tensioner RH, and remove the chain tensioner lever RH (A).
    G10266776Courtesy of SUBARU OF AMERICA, INC.
  5. Remove the chain guide RH, and remove the timing chain RH (A).
    CAUTION:
    • If the timing chain RH is not installed, the intake camshaft RH and exhaust camshaft RH are kept at zero-lift position. All cams on the camshaft are not pressing down the roller rocker arm (intake valve and exhaust valve). (Under this condition, all valves remain unlifted.)
    • Intake camshaft RH and exhaust camshaft RH can be independently rotated with the timing chain RH removed. When the intake valve and exhaust valve lift at the same time, the valve heads contact each other and valve stem may bend. Do not turn it to the outside of range of zero-lift (in range where it can be turned lightly by hand).
    NOTE: To avoid mixing with LH side, keep the removed part in order.
    G10266777Courtesy of SUBARU OF AMERICA, INC.
  6. Remove the chain guide RH from the front camshaft cap RH.
G10266778Courtesy of SUBARU OF AMERICA, INC.