Toyota Tundra Service Manual: Removal

Toyota Tundra Service Manual / Engine, Hybrid System / 1ur-fe Engine Mechanical / Camshaft(for Bank 1) / Removal

REMOVAL

PROCEDURE

1. REMOVE TIMING CHAIN COVER SUB-ASSEMBLY

(a) Remove the timing chain cover (See page ).

2. SET NO. 1 CYLINDER TO TDC / COMPRESSION

3. REMOVE NO. 1 CHAIN TENSIONER ASSEMBLY LH

(a) Move the stopper plate upward to release the lock, and push the plunger deep into the tensioner.

(b) Move the stopper plate downward to set the lock, and insert a hexagon wrench into the stopper plate hole.

(c) Remove the 2 bolts, chain tensioner and gasket.

4. REMOVE NO. 1 CHAIN TENSIONER SLIPPER LH

5. REMOVE NO. 1 CHAIN VIBRATION DAMPER LH

(a) Remove the 2 bolts and chain vibration damper.

6. REMOVE NO. 1 CHAIN SUB-ASSEMBLY LH

(a) While pushing down the No. 3 chain tensioner, insert a pin of φ1.0 mm (0.0394 in.) into the hole to fix it in place.

(b) Hold the hexagonal portion of the camshaft with a wrench and loosen the bolt.

NOTICE:

  • Be careful not to damage the cylinder head with the wrench.
  • Do not disassemble the camshaft timing gear.

(c) Hold the hexagonal portion of the camshaft with a wrench and loosen the bolt.

NOTICE:

Be careful not to damage the cylinder head with the wrench.

(d) Remove the 2 bolts. Then with the No. 1 and No. 2 chains still connected to the gears, remove the camshaft timing gear, camshaft timing exhaust gear and crankshaft timing sprocket LH.

(e) Remove the No. 1 and No. 2 chains from the gears.

7. REMOVE NO. 3 CHAIN TENSIONER ASSEMBLY

(a) Remove the 2 bolts and chain tensioner.

8. REMOVE CAMSHAFT BEARING CAP LH

(a) Make sure that the knock pin of the camshaft is positioned as shown in the illustration.

(b) Uniformly loosen and remove the 10 bearing cap bolts in the sequence shown in the illustration.

(c) Uniformly loosen and remove the 18 bearing cap bolts in the sequence shown in the illustration.

NOTICE:

Uniformly loosen the bolts while keeping the camshaft level.

(d) Remove the 6 bearing caps.

HINT:

Arrange the removed parts in the correct order.

(e) Remove the No. 3 and No. 4 camshafts.

9. REMOVE CAMSHAFT HOUSING SUB-ASSEMBLY LH

(a) Remove the camshaft housing by prying between the cylinder head and camshaft housing with a screwdriver.

HINT:

Tape the screwdriver tip before use.

NOTICE:

Be careful not to damage the contact surfaces of the cylinder head and camshaft housing.
    Installation

    Camshaft(for Bank 2)

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