Exhaust

1. Assemble exhaust camshafts.

(a) Mount the hexagonal wrench head portion of the camshaft in a vise.

CAUTION: Be careful not to damage the camshaft.

(b) Install these parts:
(1) Camshaft gear spring.
(2) Camshaft sub-gear.

NOTE: Attach the pins on the gears to the gear spring ends.

(3) Wave washer.

(d) Using Special Service Tool (SST) Variable Pin Wrench Set # 09960-10010 (Variable Pin Wrench Arm Assembly # 09962-01000, Pin 5 # 09963-00500) or equivalents, align the holes of the camshaft main gear and sub-gear by turning camshaft sub-gear counterclockwise, and temporarily install a service bolt.
(e) Align the gear teeth of the main gear and sub-gear, and tighten the service bolt.

2. Install camshafts of LH cylinder head.

CAUTION: Since the thrust clearance of the camshaft is small, the camshaft must be held level while it is being installed. If the camshaft is not level, the portion of the cylinder head receiving the shaft thrust may crack or be damaged, causing the camshaft to seize or break. To avoid this, the following steps should be carried out.

(a) Apply new engine oil to the thrust portion and journal of the camshaft.

(b) Place the exhaust camshaft at 90° angle of timing mark (1 dot mark) on the cylinder head.
(c) Apply Multipurpose (MP) grease to a new oil seal lip.

(d) Install the oil seal to the camshaft.
(e) Remove any old packing Formed In Place Gasket (FIPG) material.

(f) Apply seal packing to the No.1 bearing cap as shown.
Seal packing: Part No. 08826-00080 or equivalent.

(g) Install the 5 bearing caps in their proper locations.

(h) Apply a light coat of engine oil on the threads and under the heads of the bearing cap bolts.
(i) Install and uniformly tighten the 10 bearing cap bolts, in several passes, in the sequence shown.
Torque: 16 Nm (12 ft.lb)