This procedure covers the removal and replacement of all rocker arms on the 2019-2024 Toyota RAV4 2.5L I4 engine, including valve cover removal, timing chain positioning, and proper torque specifications.

Warnings

Tools required

Parts

• Valve cover gasket × 1 — Use OEM specification
• Valve cover bolt grommets × 12 — Use OEM specification
• Rocker arm set (all cylinders) × 1 — Use OEM specification
• Camshaft seal (if damaged) × 2 — Use OEM specification
• Engine oil × 1 — 0W-20
• Brake cleaner or parts cleaner × 1 — Non-chlorinated

Fluids

• Toyota Genuine 0W-20 — 5 qt

Preparation

1. Ensure engine is completely cold before starting work
2. Disconnect negative battery terminal and wait 90 seconds for airbag system to discharge
3. Remove engine cover by pulling upward on front clips
4. Drain engine oil completely and replace drain plug
5. Remove air intake assembly and ducting for access
6. Disconnect all electrical connectors from valve cover (PCV, ignition coils)
7. Remove ignition coils from spark plug wells
8. Label and photograph all vacuum hoses and electrical connections before removal
9. Clean area around valve cover thoroughly to prevent debris from entering engine

Procedure

1. 1

   Remove valve cover
   Remove the valve cover bolts in reverse of tightening sequence (outside to inside pattern). Carefully lift valve cover away from cylinder head. If stuck, gently tap with rubber mallet - do not pry between sealing surfaces. Remove and discard old gasket and grommets.
   Torque spec

   Cover Bolts16 Nm (12 lb-ft)
2. 2

   Rotate engine to TDC cylinder #1
   Rotate crankshaft clockwise using 19mm socket on crankshaft pulley bolt until timing marks on camshaft sprockets align with cylinder head surface. Verify #1 piston is at top dead center on compression stroke. Both camshaft lobes for cylinder #1 should be pointing upward away from rocker arms.
   ⚠Only rotate engine in clockwise direction when viewed from front. Counterclockwise rotation can damage timing chain tensioner.
3. 3

   Lock camshafts in position
   Install camshaft locking tools or pins through the camshaft sprocket holes into the cylinder head to prevent camshaft rotation. Verify both intake and exhaust camshafts are securely locked. Mark timing chain to sprocket relationship with paint marker before proceeding.
   ⚠️Do not proceed without camshafts properly locked. Movement during disassembly will cause timing misalignment.
4. 4

   Remove camshaft sprocket bolts
   While holding camshafts locked, remove the intake and exhaust camshaft sprocket bolts. Carefully support timing chain to prevent it from falling into timing cover. Wire or zip-tie chain to prevent dropping. Remove sprockets and set aside with bolts.
   ⚠Do not allow timing chain to fall into timing cover. If chain drops, the front cover must be removed to retrieve it.
5. 5

   Remove camshaft bearing caps
   Loosen camshaft bearing cap bolts evenly in multiple passes, working from outside caps toward center. Remove bolts and caps in order, keeping them organized by position and orientation (arrows on caps point toward timing chain end). Remove both camshafts and set aside on clean surface.
   ⚠Loosen bearing cap bolts gradually and evenly. Uneven removal can warp camshafts or damage bearing surfaces.
   Torque spec

   Mounting Bolts47 Nm (35 lb-ft)
6. 6

   Remove rocker arms and valve lifters
   Remove all rocker arms from their positions on the valve lifters. Keep each rocker arm with its corresponding lifter and position. Remove valve lifters from their bores. Place all components in numbered compartments or egg carton to maintain exact installation order. Inspect each component for wear, scoring, or damage.
   ⚠Each rocker arm and lifter wears to match its specific position. Mixing positions will cause premature wear and noise.
7. 7

   Clean and inspect cylinder head
   Clean all gasket surfaces on cylinder head and camshaft journals with plastic scraper and parts cleaner. Inspect camshaft bearing surfaces for scoring or damage. Check valve stem tips for wear. Measure valve clearances if service history is unknown. Verify all oil passages in head are clear.
8. 8

   Install new rocker arms and lifters
   Coat all new rocker arms and lifters generously with clean engine oil. If reusing components, install each in its exact original position. Install lifters into their bores, then position rocker arms on lifter tops. Ensure roller surfaces move freely and contact surfaces are well-lubricated.
9. 9

   Install camshafts
   Apply clean engine oil to all camshaft journals and lobes. Position intake and exhaust camshafts in their proper locations (marked on cam ends). Ensure cam lobes are positioned for TDC cylinder #1 (lobes pointing away from rocker arms). Verify camshaft timing marks are aligned.
   ⚠Install camshafts in correct positions. Intake and exhaust cams are different and marked accordingly.
10. 10

    Install camshaft bearing caps
    Install bearing caps in their original positions with arrows pointing toward timing chain end. Hand-start all bolts, then tighten evenly in multiple passes from center caps outward. Work in a crisscross pattern to seat camshafts properly. Torque to specification in final pass.
    ⚠Tighten bearing cap bolts gradually in three passes minimum. Uneven tightening can bind camshafts.
    Torque spec

    Mounting Bolts47 Nm (35 lb-ft)
11. 11

    Reinstall camshaft sprockets
    Verify timing chain is properly positioned on camshaft sprockets using paint marks made during disassembly. Install sprockets onto camshafts with timing marks aligned. Install and torque sprocket bolts while holding camshafts with locking tool. Verify all timing marks align correctly before removing locking tools.
    ⚠️Triple-check timing alignment before proceeding. Incorrect timing will cause immediate engine damage on startup.
12. 12

    Install valve cover
    Install new valve cover gasket and new bolt grommets. Ensure gasket is properly seated in valve cover groove. Position valve cover on cylinder head, ensuring no wires or hoses are pinched. Install bolts and tighten in sequence from center outward to specification.
    Torque spec

    Cover Bolts16 Nm (12 lb-ft)

Reassembly

1. Reinstall ignition coils and torque to specification
2. Reconnect all electrical connectors and vacuum hoses per labels and photos
3. Reinstall air intake assembly and ducting
4. Reinstall engine cover
5. Reconnect negative battery terminal
6. Fill engine with correct amount of fresh 0W-20 oil (5 quarts total)

Verification

• Rotate engine by hand two complete revolutions and verify timing marks realign at TDC
• Check that all valve cover bolts are torqued to specification and no leaks are visible
• Start engine and listen for abnormal valve train noise or ticking
• Verify oil pressure warning light extinguishes within 3-5 seconds of startup
• Allow engine to reach operating temperature and inspect valve cover gasket for oil leaks
• Check for proper idle quality and smooth acceleration with no misfires
• Verify no diagnostic trouble codes are present using OBD-II scanner

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