Part 3

ENGINE UNIT

COMPONENTS:

REASSEMBLY (STEPS 37-54)
37. INSTALL CAMSHAFT HOUSING SUB-ASSEMBLY LH

a. Make sure that the valve rocker arm is installed as shown in the illustration.

b. Apply seal packing in a continuous line as shown in the illustration.
Seal packing: Toyota Genuine Seal Packing Black, Three Bond 1207B or equivalent
Seal diameter: 5.0 to 5.5 mm (0.197 to 0.217 inch)

NOTICE: Remove any oil from the contact surface. Install the camshaft housing sub-assembly LH within 3 minutes. Do not start the engine for at least 2 hours after installing.

c. Install the camshaft housing LH and tighten the 13 bolts in the order shown in the illustration.
Torque: 28 Nm (286 kgf-cm, 21 ft. lbs.)

NOTICE:
^ When installing the camshaft housing LH, it is necessary to correctly position the camshafts as shown in the illustration. Failure to correctly position these parts may result in damage due to contact between the pistons and valves. If a camshaft is rotated with a piston at TDC, valve contact will occur.
^ If any of the bolts are loosened during installation, remove the camshaft housing, clean the installation surfaces, and reapply seal packing.
^ If the camshaft housing is removed because any of the bolts are loosened during installation, make sure that the previously applied seal packing does not enter any oil passages.

d. Tighten the 8 bolts in the order shown in the illustration.
Torque: 16 Nm (163 kgf-cm, 12 ft. lbs.)

38. INSTALL NO. 2 CHAIN TENSIONER ASSEMBLY
a. Install the No. 2 chain tensioner with the bolt.
Torque: 21 Nm (214 kgf-cm, 15 ft. lbs.)
b. While pushing in the tensioner, insert a pin of diameter 1.0 mm (0.039 inch) into the hole to fix it.
39. INSTALL CAMSHAFT TIMING GEARS AND NO. 2 CHAIN (for Bank 1)

a. Align the mark plate (yellow) with the timing marks (1-dot mark) of the camshaft timing gears as shown in the illustration.
b. Apply a light coat of engine oil to the bolt threads and bolt-seating surface.
c. Align the knock pin of the camshaft with the pin hole of the camshaft timing gear. Install the camshaft timing gear and camshaft timing exhaust gear RH with the No. 2 chain installed.

d. Hold the hexagonal portion of the camshaft with a wrench, and tighten the 2 bolts.
Torque: 100 Nm (1,020 kgf-cm, 74 ft. lbs.)
e. Remove the pin from the chain tensioner.

40. INSTALL NO. 3 CHAIN TENSIONER ASSEMBLY
a. Install the chain tensioner with the bolt.
Torque: 21 Nm (214 kgf-cm, 15 ft. lbs.)
b. While pushing in the tensioner, insert a pin of diameter 1.0 mm (0.039 inch) into the hole to hold it.
41. INSTALL CAMSHAFT TIMING GEARS AND NO. 2 CHAIN (for Bank 2)

a. Align the mark plate (yellow) with the timing marks (2-dot mark) of the camshaft timing gears as shown in the illustration.
b. Apply a light coat of engine oil to the bolt threads and bolt-seating surface.
c. Align the knock pin of the camshaft with the pin hole of the camshaft timing gear. Install the camshaft timing gear and camshaft timing exhaust gear LH with the No. 2 chain installed.

d. Hold the hexagonal portion of the camshaft with a wrench, and tighten the 2 bolts.
Torque: 100 Nm (1,020 kgf-cm, 74 ft. lbs.)
e. Remove the pin from the chain tensioner.

42. INSTALL NO. 1 CHAIN VIBRATION DAMPER
a. Install the chain vibration damper with the 2 bolts.
Torque: 23 Nm (230 kgf-cm, 17 ft. lbs.)

43. INSTALL NO. 2 CHAIN VIBRATION DAMPER
a. Install the 2 chain vibration dampers.

44. INSTALL CRANKSHAFT TIMING SPROCKET
a. Install the 2 timing gear set keys and timing sprocket as shown in the illustration.

45. INSTALL IDLE SPROCKET ASSEMBLY
a. Apply a light coat of engine oil to the rotating surface of the No. 1 idle gear shaft.
b. Temporarily install the No. 1 idle gear shaft and idle sprocket with the No. 2 idle gear shaft while aligning the knock pin of the No. 1 idle gear with the knock pin groove of the cylinder block.

NOTICE: Be careful of the idle gear direction.

HINT: Check that no foreign objects are on the idle gear shafts No. 1 and No. 2.

c. Using a 10 mm hexagon wrench, tighten the No. 2 idle gear shaft.
Torque: 60 Nm (612 kgf-cm, 44 ft. lbs.)

HINT: After installing the idle sprocket assembly, check that the idle sprocket turns smoothly.

46. INSTALL CHAIN SUB-ASSEMBLY

a. Align the mark plate and timing marks as shown in the illustration and install the chain.

HINT: The camshaft mark plate is orange.

b. Do not pass the chain over the crankshaft, just put it on it.

c. Turn the camshaft timing gear assembly on the RH bank counterclockwise to tighten the chain between the banks.

NOTICE: When the idle sprocket is reused, align the chain plate with the mark where the plate had been in order to tighten the chain between the banks.

d. Align the mark plate and timing mark as shown in the illustration and install the chain onto the crankshaft timing sprocket.

HINT: The crankshaft mark plate is yellow.

e. Temporarily tighten the pulley set bolt.

f. Turn the crankshaft clockwise to set it to the RH block bore center line (TDC/compression).
47. INSTALL CHAIN TENSIONER SLIPPER
48. INSTALL NO. 1 CHAIN TENSIONER ASSEMBLY

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 pin of diameter 1.27 mm (0.050 inch) into the hole of the stopper plate.

c. Install the chain tensioner with the 2 bolts.
Torque: 10 Nm (102 kgf-cm, 7 ft. lbs.)

d. Remove the lock pin of the chain tensioner. Check that each timing mark is aligned with the crankshaft at the TDC/compression.
e. Remove the pulley set bolt.

49. INSTALL TIMING CHAIN CASE OIL SEAL
a. Using SST, tap in a new oil seal until its surface is flush with the timing gear case edge.
SST 09223-22010, 09506-35010

NOTICE:
^ Keep the lip free of foreign matter.
^ Do not tap on the oil seal at an angle.
^ Make sure that the oil seal edge does not stick out of the timing chain case.

50. INSTALL WATER PUMP ASSEMBLY
a. Install a new gasket and the water pump with the 16 bolts.
Torque: 9.1 Nm (93 kgf-cm, 81 inch lbs.)

NOTICE: Be sure to replace the bolts indicated by A with new ones or reuse them after applying adhesive 1344.

51. INSTALL TIMING CHAIN COVER SUB-ASSEMBLY

a. Apply seal packing in a continuous line to the engine unit as shown in the illustration.
Seal packing: Toyota Genuine Seal Packing Black, Three Bond 1207B or equivalent
Seal diameter: 5.0 to 5.5 mm (0.197 to 0.217 inch)

NOTICE:
^ Be sure to clean and degrease the contact surfaces, especially the surfaces indicated by C in the illustration.
^ When the contact surfaces are wet, wipe them with an oil-free cloth before applying seal packing.
^ Install the chain cover within 3 minutes.
^ Do not start the engine for at least 2 hours after installing.

b. Apply seal packing in a continuous line to the timing chain cover as shown in the illustration.
Seal packing:
08826-00080 or equivalent
08826-00100 or equivalent

NOTICE:
^ When the contact surfaces are wet, wipe them with an oil-free cloth before applying seal packing.
^ Install the chain cover within 3 minutes and tighten the bolts within 15 minutes after applying seal packing.
^ Do not start the engine for at least 2 hours after installing.

Apply seal packing as follows:

c. Install a new gasket.

d. Align the oil pump's drive rotor spline and the crankshaft as shown in the illustration. Install the spline and chain cover to the crankshaft.

e. Temporarily tighten the timing chain cover with the 25 bolts and 2 nuts.

Bolt Length:

NOTICE: Make sure that there is no oil on the bolt threads.

f. Fully tighten the 3 bolts as shown in the illustration.
Torque:
43 Nm (438 kgf-cm, 32 ft. lbs.) for bolt A
21 Nm (214 kgf-cm, 15 ft. lbs.) for bolts except A

g. Fully tighten the 3 bolts as shown in the illustration.
Torque: 21 Nm (214 kgf-cm, 15 ft. lbs.)

h. Fully tighten the 7 bolts and 2 nuts as shown in the illustration.
Torque: 21 Nm (214 kgf-cm, 15 ft. lbs.)

HINT: Tighten the bolts and nuts in the order of upper to lower as shown in the illustration.

i. Fully tighten the 12 bolts as shown in the illustration.
Torque: 21 Nm (214 kgf-cm, 15 ft. lbs.)

HINT: Tighten the bolts in the order of lower to upper as shown in the illustration.

j. Install a new gasket and the chain cover plate with the 4 bolts.

52. INSTALL OIL STRAINER SUB-ASSEMBLY
a. Using an E6 torx socket, install the stud bolts as shown in the illustration.
Torque: 4.0 Nm (41 kgf-cm, 35 inch lbs.)

b. Install the baffle plate with the 8 bolts.
Torque: 10 Nm (102 kgf-cm, 7 ft. lbs.)

HINT: Temporarily tighten the 8 bolts. Fully tighten 2 bolts A as shown in the illustration before tightening the other bolts.

c. Install a new gasket and the oil strainer with the 3 nuts.
Torque: 10 Nm (102 kgf-cm, 7 ft. lbs.)

d. Install 2 new O-rings.

53. INSTALL OIL PAN SUB-ASSEMBLY
a. When replacing a stud bolt, install it by using an E6 Torx socket wrench.
Torque: 4.0 Nm (41 kgf-cm, 35 inch lbs.)
Apply seal packing in a continuous line as shown in the illustration.

Seal packing: Part No. 08826-00080 or equivalent
Seal diameter: 3.0 to 4.0 mm (0.118 to 0.156 inch)

NOTICE:
^ Remove any oil from the contact surface.
^ Install the oil pan within 3 minutes after applying seal packing.
^ Do not start the engine for at least 2 hours after installing.

b. Install the oil pan with the 16 bolts and 2 nuts.
Torque:
10 Nm (102 kgf-cm, 7 ft. lbs.) for bolt A
21 Nm (214 kgf-cm, 15 ft. lbs.) for bolts except A
54. INSTALL NO. 2 OIL PAN SUB-ASSEMBLY

a. Apply seal packing in a continuous line as shown in the illustration.
Seal packing: Part No. 08826-00080 or equivalent
Seal diameter: 4.0 to 6.0 mm (0.156 to 0.236 inch)

NOTICE:
^ Remove any oil from the contact surface.
^ Install the oil pan No. 2 within 3 minutes after applying seal packing.
^ Do not start the engine for at least 2 hours after installing.

b. Install the oil pan with the 15 bolts and 2 nuts.
Torque: 10 Nm (102 kgf-cm, 7 ft. lbs.)
c. Install a new gasket and the drain plug.
Torque: 40 Nm (408 kgf-cm, 30 ft. lbs.)