Rocker Arm Assembly: Service and Repair

COMPONENTS

INSPECTION
Rocker Arms





1. Check the rocker arm roller surfaces. Replace if recesses, damage or heat seizure is observed.
2. Check the rocker arms for the roller rotation. Replace if uneven rotation or roller backlash is observed.
3. Check the inside diameter. Replace if damage or seizure is observed.

Rocker Arm Shafts





1. Check the rocker arm mounting portions of the rocker arm shafts for wear or damage. Replace as necessary.
2. Check that the oil holes are clear.

REASSEMBLY








Insert bearing cap No. 1 so that the notch on the end of the shaft faces in the direction shown in the illustration. Insert the mounting bolt.

NOTE:
1) Since bearing caps No. 1 and No. 4 look alike, check for the proper stamped cap No.
2) Check that the oil groove faces downward as shown in the illustration, and that the oil port is located on the rocker shaft (A) side.
3) Since bearing caps No. 2 and No. 3 look alike, check for the proper stamped cap No. Then, attach the caps.
4) Apply engine oil on the inside diameter area of the rocker arm and attach the rocker shaft.

Tightening torque:
Rocker arm and shaft assembly bolt: 19 - 21 Nm (190 - 210 kgs.cm, 14 - 15 ft. lbs.)