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Acura RL. Manual - part 424

9. If the valve stem installed height is over the service limit, replace the valve and recheck. If it is still

over the service limit, replace the cylinder head; the valve seat in the head is too deep.

VALVE, SPRING, AND VALVE SEAL INSTALLATION

Special Tools Required



Stem seal driver 07PAD-0010000



Valve spring compressor attachment 07757-PJ1010A

1. Coat the valve stems with new engine oil. Install the valves in the valve guides.

2. Check that the valves move up and down smoothly.

3. Install the spring seats on the cylinder head.

4. Install the new valve seals (A) using the valve guide seal installer (B).

Fig. 126: Installing Valve Seals Using Valve Guide Seal Installer
Courtesy of AMERICAN HONDA MOTOR CO., INC.

5. Install the valve spring and valve retainer. Place the end of the valve spring with closely wound coils

toward the cylinder head.

6. Install the valve spring compressor. Compress the spring and install the valve cotters.

NOTE:

Exhaust valve seals (C) have a black spring (D) and intake valve seals
(E) have a white spring (F); they are not interchangeable.

2007 Acura RL

2005-08 ENGINE Cylinder Head - RL

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Fig. 127: Compressing Valve Spring
Courtesy of AMERICAN HONDA MOTOR CO., INC.

7. Remove the valve spring compressor.

8. Lightly tap the end of each valve stem two or three times with a plastic mallet (A) to ensure proper

seating of the valve and valve cotters. Tap the valve stem only along its axis so you do not bend the
stem.

Fig. 128: Tapping End Of Valve Stem With Plastic Mallet
Courtesy of AMERICAN HONDA MOTOR CO., INC.

CAMSHAFT, ROCKER ARM ASSEMBLY, CAMSHAFT SEAL, AND
PULLEY INSTALLATION

1. Apply a light coat of new engine oil around the camshaft oil seal.

2. Gently tap the new camshaft oil seal (A) into the cylinder head.

1. Tap the camshaft oil seal in squarely.

2. Install the oil seal about 0.5-1.5 mm (0.02-0.06 in.) below the surface of the cylinder head.

FRONT

2007 Acura RL

2005-08 ENGINE Cylinder Head - RL

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Fig. 129: Identifying Camshaft Oil Seal, Camshaft And Camshaft Thrust Cover (Front) With
Torque Specifications
Courtesy of AMERICAN HONDA MOTOR CO., INC.

REAR

Fig. 130: Identifying Camshaft Oil Seal, Camshaft And Camshaft Thrust Cover (Rear) With
Torque Specifications
Courtesy of AMERICAN HONDA MOTOR CO., INC.

3. Insert the camshaft (B) into the cylinder head, then install the camshaft thrust cover (C). Always use a

new O-ring (D). Apply new engine oil to the camshaft journals and lobes.

4. Check that the oil seal lips are not distorted.

5. Install the solid dowel pins (E) and the hollow dowel pins (F).

6. Reassemble the rocker arm assembly (see ROCKER ARM AND SHAFT

DISASSEMBLY/REASSEMBLY ).

7. Loosen the valve adjusting screws.

8. Set the rocker arm assembly in place, and loosely install the bolts. Make sure that the rocker arms are

properly positioned on the valve stems.

9. Tighten each bolt two turns at a time in the sequence shown to ensure that the rockers do not bind on

the valves.

2007 Acura RL

2005-08 ENGINE Cylinder Head - RL

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Specified Torque

8 x 1.25 mm

24 N.m (2.4 kgf.m, 17 lbf.ft)

Fig. 131: Identifying Tightening Sequence Of Rocker Arm Bolts
Courtesy of AMERICAN HONDA MOTOR CO., INC.

10. Install the injector base (A). Always use a new gasket (B).

Fig. 132: Identifying Injector Base With Torque Specifications
Courtesy of AMERICAN HONDA MOTOR CO., INC.

11. Apply new engine oil to the threads of the camshaft pulley mounting bolt (A). Install the back cover

(B), then install the camshaft pulley (C).

2007 Acura RL

2005-08 ENGINE Cylinder Head - RL

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