Oil Pump Installation

Make sure the No. 1 piston is at TDC (see step 4 on CAM CHAIN REMOVAL ).
Align the dowel pin (A) on the rear balancer shaft with the mark (B) on the oil pump.

Fig 1: Identifying Dowel Pin On Rear Balancer Shaft
Courtesy of AMERICAN HONDA MOTOR CO., INC.
To hold the rear balancer shaft, insert a 6 mm pin driver (A) into the maintenance hole in the lower balancer shaft holder and through the rear balancer shaft.

Fig 2: Identifying Pin Driver
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Apply new engine oil to the threads of the oil pump sprocket mounting bolt (A).

Fig 3: Oil Pump Sprocket Mounting Bolt With Torque Specifications
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Loosely install the oil pump (B), then install the oil pump sprocket (C).
Remove the pin driver (D).
Torque the oil pump mounting bolts.
Squeeze the new oil pump chain tensioner (A), then install the set clip (B) on it as shown below.
NOTE: The set clip is supplied with the oil pump chain tensioner.

Fig 4: Identifying Oil Pump Chain Tension & Set Clip
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Install the new oil pump chain tensioner.

Fig 5: Oil Pump Chain Tensioner Bolts With Torque Specifications
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Remove the set clip from the oil pump chain tensioner.

Fig 6: Identifying Oil Pump Chain Tensioner Clip
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Install the oil pan (see OIL PAN INSTALLATION ).