Timing Belt


reverse removal procedure.

Removal & Installation (Oil Pump Removed)

Pry seal from oil pump body. Using hammer and Seal Installer (SST 09309-37010), install NEW seal until seal surface is even with oil pump body. Apply grease to seal lip of seal.

TIMING BELT

Removal

1)  Disconnect negative battery cable. Remove accessory drive belts. Remove cruise control actuator (if equipped) from passenger- side front fender.

2)  Remove bolt and vacuum switching valve assembly, located near front of timing belt cover on passenger’s side. Raise and support vehicle. Remove right lower engine cover.

3)  Slightly raise engine to remove weight from right (timing belt side) engine mount. Remove through-bolt and right engine mount.

4)  Remove spark plugs. Remove nuts, seal washers, valve cover and gasket. Remove No. 2 timing belt cover and gasket. See Fig. 11.

Fig. 11: Exploded View Of Timing Belt & Components Courtesy of Toyota Motor Sales, U.S.A., Inc.

5)  Rotate crankshaft clockwise so cylinder No. 1 is at TDC on compression stroke. Cylinder No. 1 is front cylinder at timing belt

end of engine. Ensure timing mark on crankshaft pulley aligns with “0” mark on timing belt cover.

6)  With cylinder No. 1 at TDC on compression stroke, ensure hole (5E timing mark) on camshaft sprocket aligns with timing mark on camshaft bearing cap. See Fig. 12. If timing mark is not aligned, rotate crankshaft clockwise one revolution (360 degrees).

7)  Remove bolt and accessory drive belt pulley from front of crankshaft pulley. Using Pulley Holder (SST 09213-14010) and Handle (SST 09330-00021), hold crankshaft pulley, and remove crankshaft pulley bolt.

8)  Using puller, remove crankshaft pulley. Remove No. 3 and then No. 1 timing belt cover and gasket. See Fig. 11. Note direction of timing belt guide installation for installation reference. See Fig. 12. Remove timing belt guide.

Fig. 12: Aligning Timing Marks

Courtesy of Toyota Motor Sales, U.S.A., Inc.

CAUTION: If reusing timing belt, mark direction of timing belt rotation and place reference mark on timing belt at all

sprockets for reassembly reference.

9) Remove tension spring from No. 1 idler pulley.

See Fig. 11. Loosen No. 1 idler pulley bolt. Move No. 1 idler away from timing belt as far as possible and tighten bolt. Remove timing belt.

10) Remove bolt and No. 2 idler pulley (if necessary). If removing camshaft sprocket, hold camshaft on hexagon area using wrench. Use care not to damage cylinder head. Loosen camshaft sprocket bolt. Remove bolt and camshaft sprocket.

11) If removing crankshaft sprocket, place shop towels against oil pump body. Using 2 screwdrivers, pry crankshaft sprocket from crankshaft.

12) If removing oil pump drive sprocket, hold oil pump drive sprocket by installing Sprocket Holder (SST 09616-12011) in holes on front of oil pump drive sprocket. Remove oil pump drive sprocket nut. Remove sprocket holder and oil pump drive sprocket.

Inspection

1) Inspect timing belt for damaged teeth, cracking and oil contamination. Ensure No. 1 and 2 idler pulleys rotate freely. Inspect all sprockets for damage. Replace damaged components.

2) Measure free length of tension spring. Replace tension spring if free length is not 1.512″ (38.40 mm) . Measure tension required to extend tension spring to 1.866″ (47.40 mm) . Replace tension spring if tension is not 7.3 lbs. (3.3 kg).

Installation

1)  If installing crankshaft sprocket, align crankshaft sprocket with key in crankshaft. Install crankshaft sprocket with flange toward cylinder block.

2)  If installing oil pump drive sprocket, align flat area on oil pump drive sprocket with flat area on oil pump shaft. Install oil pump drive sprocket. Install and tighten nut to specification while holding oil pump drive sprocket with sprocket holder. See TORQUE SPECIFICATIONS.

3)  If installing No. 2 idler pulley, install idler pulley. Install and tighten bolt to specification. See TORQUE SPECIFICATIONS. If installing camshaft sprocket, align pin groove in camshaft sprocket with pin in camshaft.

4)  Install camshaft sprocket. Install and tighten camshaft sprocket bolt to specification while holding camshaft on hexagon area with wrench. See TORQUE SPECIFICATIONS.

5)  Install No. 1 idler pulley with bolt loosely installed. DO NOT tighten bolt at this time. Move No. 1 idler pulley away from timing belt area as far as possible. Temporarily tighten No. 1 idler pulley bolt.

6)  Ensure all sprockets and idler pulleys are clean. Temporarily install crankshaft pulley bolt, and rotate crankshaft so timing mark on crankshaft sprocket aligns with timing mark on oil pump body. See Fig. 12.

CAUTION: If reusing timing belt, ensure reference marks on timing belt align with those placed on all sprockets and timing belt is installed in original direction of rotation.

7)  Remove crankshaft pulley bolt. Install timing belt on crankshaft sprocket, oil pump drive sprocket, No. 1 idler pulley and then No. 2 idler pulley in sequence.

8)  Install timing belt guide with cupped side away from crankshaft sprocket and flat side toward timing belt. Install No. 1 timing belt cover and gasket.

9)  Align crankshaft pulley key groove with key in crankshaft.

 

Install crankshaft pulley. Install and tighten crankshaft pulley bolt to specification while holding crankshaft pulley with pulley holder and handle. See TORQUE SPECIFICATIONS.

10)  Install accessory drive belt pulley on front of crankshaft pulley. Install and tighten bolts to specification. See TORQUE SPECIFICATIONS.

11)  Rotate crankshaft clockwise so cylinder No. 1 is at TDC on compression stroke. Ensure timing mark on crankshaft pulley aligns with “0” mark on timing belt cover.

CAUTION: If reusing timing belt, ensure reference on timing belt aligns with that on camshaft sprocket.

12)  Rotate camshaft sprocket, and align hole (5E timing mark) on camshaft sprocket with timing mark on camshaft bearing cap. See Fig. 12. Install timing belt on camshaft sprocket. Ensure tension exists on timing belt between crankshaft sprocket, oil pump drive sprocket and camshaft sprocket.

CAUTION: Crankshaft must always be rotated clockwise. DO NOT rotate crankshaft counterclockwise.

13)  Loosen No. 1 idler pulley bolt, allowing tension spring to move No. 1 idler pulley against timing belt. Rotate crankshaft clockwise 2 full revolutions from TDC to TDC.

14)  Ensure hole (5E timing mark) on camshaft sprocket aligns with timing mark on camshaft bearing cap when timing mark on crankshaft pulley aligns with “0” mark on timing belt cover. If timing marks are not aligned, remove and reinstall timing belt.

15)  Tighten No. 1 idler pulley bolt to specification. See TORQUE SPECIFICATIONS. Install No. 2 and 3 timing belt covers and gaskets. Apply sealant at indicated valve cover sealing areas on cylinder head. See Fig. 3.

16)  Using NEW gasket, install valve cover and sealing washers. Install and tighten nuts to specification. See TORQUE SPECIFICATIONS.

17)  To install remaining components, reverse removal procedure. To ensure proper mount alignment, install all right (timing belt side) engine mount bolts/nuts before tightening to specification. See TORQUE SPECIFICATIONS.

VALVE LIFTER

Removal

Remove camshaft. See CAMSHAFT. Note location of adjusting shims and valve lifters for reassembly reference. Remove adjusting shims and valve lifters from cylinder head.

Inspection

Inspect components for damage. Measure valve lifter diameter and bore diameter. Ensure oil clearance is within specification. Replace components if not within specification. See VALVE LIFTERS table under ENGINE SPECIFICATIONS.

Installation

To install, reverse removal procedure. Ensure components are installed in original locations. If camshaft, adjusting shims or valve lifters are replaced, check valve clearance. See VALVE CLEARANCE ADJUSTMENT under ADJUSTMENTS.

CAMSHAFT Removal

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