Valve Rocker Arm and Push Rod Replacement - Left Side (L84)

Valve Rocker Arm and Push Rod Replacement - Left Side (L84) Single Use Fasteners and Components Valve Rocker Arm Cover Gasket Removal Procedure

Valve Rocker Arm and Push Rod Replacement - Left Side (L84) — figure 1

Note

Some components not shown for graphic clarity.

1. Positive Crankcase Ventilation Tube Connector (1) @ Positive Crankcase Ventilation Fitting » Disconnect — Plastic Collar Quick Connect Fitting Service
2. Positive Crankcase Ventilation Tube Connector (2) @ Intake Manifold » Disconnect — Plastic Collar Quick Connect Fitting Service
3. Positive Crankcase Ventilation Foul Air Tube (3) » Remove

Valve Rocker Arm and Push Rod Replacement - Left Side (L84) — figure 2

4. Grasp the valve rocker arm cover insulator (3) and lift up disengaging the 3 upper intake manifold sight shield grommets (2) from the 3 valve rocker arm cover insulator retainers (1).
5. Valve Rocker Arm Cover Insulator (3) » Remove
6. Inspect the 3 upper intake manifold sight shield grommets (2) on the valve rocker arm cover insulator and replace as necessary.
7. Engine Wiring Harness » Reposition

Valve Rocker Arm and Push Rod Replacement - Left Side (L84) — figure 3

Note

Pull only on the spark plug wire boot to remove the wire. Inspect the spark plug wire for damage and replace if necessary.

8. Twist the 4 spark plug wire boots a ½ turn and remove the 4 spark plug wires (1) from the 4 ignition coils (2).
9. Inspect the spark plug wire for damage and replace if necessary.
10. Engine Wiring Harness Connector @ Ignition Coil » Disconnect [4x]

Valve Rocker Arm and Push Rod Replacement - Left Side (L84) — figure 4

11. Fuel Feed Pipe Bolt (1) @ Fuel Feed Pipe (2) » Remove
12. Fuel Feed Pipe (2) » Reposition

Valve Rocker Arm and Push Rod Replacement - Left Side (L84) — figure 5

13. Valve Rocker Arm Cover Bolt (1) » Loosen until disengaged [9x]
14. Valve Rocker Arm Cover - Left Side (2) » Remove

Valve Rocker Arm and Push Rod Replacement - Left Side (L84) — figure 6

15. Valve Rocker Arm Cover Gasket (2) @ Valve Rocker Arm Cover (1) » Remove and DISCARD

Valve Rocker Arm and Push Rod Replacement - Left Side (L84) — figure 7

Note

Only replace the valve rocker arms and valve push rods as required. The rocker arm pivot support bolts are not serviced separately. Place the valve rocker arms and valve push rods in a rack so they can be installed in the same location from which they were removed.

16. Valve Rocker Arm Pivot Support Bolt (2) » Loosen until disengaged
17. Valve Rocker Arm (1) » Remove

Valve Rocker Arm and Push Rod Replacement - Left Side (L84) — figure 8

18. Valve Push Rod (1) » Remove Cleaning and Inspection Procedure - Conditional

Note

The following cleaning and inspection and/or overhaul steps are ONLY to be performed as determined necessary based on the condition of the part being removed with the intention of reinstallation. The labor time to perform any of these steps is not included in the base labor time and if required would need to be documented and submitted as Other Labor Hours for warranty claim reimbursement. A description of the repairs performed must be documented in the technician correction comments.

Note

Parts that are to be used again must be marked, sorted, or organized for assembly.

Warning

Refer to Safety Glasses and Compressed Air Warning.

Note

Spark plug wire integrity is vital for proper engine operation. A thorough inspection will be necessary to accurately identify conditions that may affect engine operation.

1. Inspection the spark plug wire for the following conditions: 1.1. Correct routing of the spark plug wires. Incorrect routing may cause cross-firing. 1.2. Inspect for any signs of cracks or splits in the wires.
2. Inspect each boot for the following conditions: 2.1. Tearing 2.2. Piercing 2.3. Arcing 2.4. Carbon tracking 2.5. Corroded terminals
3. If corrosion, carbon tracking or arcing are indicated on a spark plug wire boot or on a terminal, replace the wire and the component connected to the wire.

Valve Rocker Arm and Push Rod Replacement - Left Side (L84) — figure 9

4. Remove the 8 ignition coil bolts (1) and 4 ignition coils (2) before cleaning the valve rocker arm cover (3) in solvent. Do NOT submerge the 4 ignition coils (2) in solvent.
5. Inspect the valve rocker arm cover (3) for the following conditions: 5.1. Scoring or damage to the gasket surfaces 5.2. Ventilation system passages for restrictions 5.3. Threaded bolt holes for damage or debris
6. Install the 4 ignition coils (2).

Caution

Refer to Fastener Caution.

7. Install and tighten the 8 ignition coil bolts (1). Fastener Specifications

Valve Rocker Arm and Push Rod Replacement - Left Side (L84) — figure 10

Note

Parts that are to be used again must be marked, sorted or organized for assembly.

8. Mark, sort, or organize the components for assembly.
9. Clean the components with cleaning solvent.

Warning

Refer to Safety Glasses and Compressed Air Warning.

10. Dry the components with compressed air.

11. Inspect the valve rocker arms bearings (2) for binding or roughness.

12. Inspect the valve rocker arm pushrod sockets (3) and valve stem mating surfaces (1). These surfaces should be smooth with no scoring or exceptional wear.

13. Inspect the pushrods for worn or scored ends. These surfaces should be smooth with no scoring or exceptional wear.

14. Inspect the pushrods for bends. Roll the pushrod on a flat surface to determine if the pushrod is bent.

15. Inspect the pushrod oil passages for restrictions.

16. Inspect the rocker arm pivot supports for cracks, wear, or other damage. Installation Procedure

17. Lubricate the flange of the valve rocker arm bolts with clean engine oil. Adhesives, Fluids, Lubricants, and Sealers

18. Lubricate the valve rocker arms and push rods with clean engine oil. Adhesives, Fluids, Lubricants, and Sealers

Note

When using the valve train components again, always install the components to the original location and position. Valve lash is net build. No valve adjustment is required. Ensure the push rods seat properly to the valve lifter sockets. The rocker arm bolts are not serviced separately.

3. Valve Push Rod (1) » Install

Note

Ensure the push rods seat properly to the ends of the valve rocker arms.

4. Valve Rocker Arm (1) » Install

Caution

Refer to Fastener Caution.

5. Valve Rocker Arm Pivot Support Bolt (2) » Install and tighten — Fastener Specifications

6. Valve Rocker Arm Cover Gasket (2) @ Valve Rocker Arm Cover (1) » Install NEW

Note

Some components not shown for graphic clarity.

7. Valve Rocker Arm Cover - Left Side (2) » Install

8. Valve Rocker Arm Cover Bolt (1) » Hand tighten [9x]

9. Fuel Feed Pipe (2) » Reposition

10. Fuel Feed Pipe Bolt (1) @ Fuel Feed Pipe (2) » Install and hand tighten

11. Valve Rocker Arm Cover Bolt (1) » Tighten in sequence [9x] — Fastener Specifications

12. Fuel Feed Pipe Bolt (1) @ Fuel Feed Pipe (2) » Tighten — Fastener Specifications

13. Engine Wiring Harness Connector @ Ignition Coil » Connect [4x]

14. Inspect the inside of the spark plug rubber boot for a thin, even coat of grease. If there is no grease present or additional grease is necessary, apply a thin coating of dielectric grease evenly to the inside of the spark plug rubber boot up to a depth of 15 mm from the end of the boot. Adhesives, Fluids, Lubricants, and Sealers

15. Push the 4 spark plug wire boots (1) onto the 4 ignition coils (2) until two audible clicks are heard.

16. Engine Wiring Harness » Reposition

17. Valve Rocker Arm Cover Insulator (3) » Install

18. Install the 3 upper intake manifold sight shield grommets (2) to the 3 valve rocker arm cover insulator retainers (1).

19. Positive Crankcase Ventilation Foul Air Tube (3) » Install

20. Positive Crankcase Ventilation Tube Connector (2) @ Intake Manifold » Connect — Plastic Collar Quick Connect Fitting Service

21. Positive Crankcase Ventilation Tube Connector (1) @ Positive Crankcase Ventilation Fitting » Connect — Plastic Collar Quick Connect Fitting Service