Last Modified: 4-30-2014 6.6 A Doc ID: RM000000SM0007X
Model Year: 2006 Model: LX470 Prod Date Range: [05/2005 -           ]
Title: 2UZ-FE ENGINE MECHANICAL: CYLINDER HEAD: DISASSEMBLY; 2006 MY LX470 [05/2005 -        ]

DISASSEMBLY

1. REMOVE VALVE LIFTER

(a) Remove the valve lifter and adjusting shim.

HINT:

Arrange the valve lifters and shims in the correct order.

2. REMOVE INTAKE VALVE

(a) Using SST, compress the valve spring and remove the 2 valve spring retainer locks.

SST: 09202-70020

09202-00010

(b) Remove the spring retainer, valve spring, valve and spring seat.

HINT:

Arrange the valves, valve springs, spring seats and spring retainers in the correct order.

3. REMOVE EXHAUST VALVE

(a) Using SST, compress the valve spring and remove the 2 valve spring retainer locks.

SST: 09202-70020

09202-00010

(b) Remove the spring retainer, valve spring, valve and spring seat.

HINT:

Arrange the valves, valve springs, spring seats and spring retainers in the correct order.

4. REMOVE VALVE STEM OIL SEAL

(a) Using needle nose pliers, remove the oil seal.

5. REMOVE CAMSHAFT TIMING TUBE ASSEMBLY

(a) Mount the hexagon head portion of the camshaft in a vise.

NOTICE:

  • Be careful not to damage the camshaft.
  • Do not remove the 4 bolts shown in the illustration. The bolts determine the backlash of the gear in the timing tube. If any of the bolts are removed, install a new timing tube assembly.

(b) Remove the screw plug and seal washer.

(c) Using a 10 mm hexagon wrench, remove the bolt.

(d) Pull out the timing tube and drive gear from the camshaft.

(e) Using SST and a 5 mm hexagon wrench, remove the 4 bolts, drive gear and oil seal.

SST: 09960-10010

09962-01000

09963-00500

NOTICE:

Be careful not to damage the timing tube.

6. REMOVE CAMSHAFT SUB GEAR

(a) Mount the hexagon head portion of the camshaft in a vise.

NOTICE:

Be careful not to damage the camshaft.

(b) Using SST, turn the sub-gear clockwise and remove the service bolt.

SST: 09960-10010

09962-01000

09963-00500

Recommended service bolt:

Thread Diameter

Thread Pinch

Bolt Length

6 mm

1.0 mm

16 to 20 mm (0.63 to 0.79 in.)

(c) Using snap ring pliers, remove the snap ring.

(d) Remove the wave washer, sub-gear and bolt washer.

HINT:

Arrange the driven sub-gears and bolt washers (bank 2 and bank 1).

(e) Using a vernier caliper, measure the free distance between the washer ends.

Standard free distance:

18.2 to 18.8 mm (0.712 to 0.740 in.)

If the free distance is not as specified, replace the washer.