REMOVAL & INSTALLATION
See Figure 1
- Rotate the engine so that No. 1 cylinder is at TDC on the compression stroke. Check that the timing marks are aligned on the camshaft and crankshaft pulleys. An access plug is provided in the camshaft belt cover so that the camshaft timing can be checked without removal of the cover or any other parts. Set the crankshaft to TDC by aligning the timing mark on the crank pulley with the TDC mark on the belt cover. Look through the access hole in the belt cover to make sure that the timing mark on the camshaft drive sprocket is lined up with the pointer on the inner belt cover.
Always turn the engine in the normal direction of rotation. Backward rotation may cause the timing belt to jump time, due to the arrangement of the belt tensioner.
- Remove the fan blade and water pump pulley bolts.
- Loosen the alternator retaining bolts and remove the drive belt from the pulleys. Remove the water pump pulley.
- Remove the radiator and condenser.
- Loosen and position the power steering pump mounting bracket aside.
- Remove the four timing belt outer cover retaining bolts and remove the cover.
- Remove the auxiliary shaft cover.
- Remove the crankshaft pulley and belt guide.
- Loosen the belt tensioner pulley assembly, then position a camshaft belt adjuster tool (T74P-6254-A or equivalent) on the tension spring rollpin and retract the belt tensioner away from the timing belt. Tighten the adjustment bolt to lock the tensioner in the retracted position.
- Remove the timing belt.
- Remove the fuel pump. For more information, refer to Fuel System .
- Remove the retaining pin and slide off the auxiliary shaft sprocket.
- Remove the auxiliary shaft retaining plate.
- Using a slide hammer and puller attachment, remove the auxiliary shaft from the block. The bearings can be removed with a driver.
- Coat the new bearings in 50W engine oil and drive them into place. Make sure the oil holes in the bearings align with the oil holes in the block.
- Completely dip the auxiliary shaft in 50W engine oil and install it in the block.
- Install the retaining plate. Tighten the bolts to 6-9 ft. lbs. (8-12 Nm).
- Install the sprocket and pin.
- Install the fuel pump.
- Make certain that the crankshaft timing mark and the camshaft sprocket timing mark are aligned with the engine block timing marks.
- Install the new timing belt over the crankshaft sprocket and then counterclockwise over the auxiliary and camshaft sprockets, making sure the lugs on the belt properly engage the sprocket teeth on the pulleys. Be careful not to rotate the pulleys when installing the belt.
- Release the timing belt tensioner pulley, allowing the tensioner to take up the belt slack. If the spring does not have enough tension to move the roller against the belt (belt hangs loose), it might be necessary to manually push the roller against the belt and tighten the bolt.
The spring should not be used to set belt tension; a wrench must be used on the tensioner assembly.
- Rotate the crankshaft two complete turns by hand (in the normal direction of rotation) to remove the slack from the belt, then tighten the tensioner adjustment and pivot bolts to specifications. Make sure the belt is seated properly on the pulleys and that the timing marks are still in alignment when No. 1 cylinder is again at TDC of the No. 1 cylinder's compression stroke.
- Install the crankshaft pulley and belt guide, as described in this section.
- Install the timing belt cover, as described in this section.
- Install the water pump pulley and fan blades.
- Install the alternator and drive belts, then adjust and tighten it to specifications.
- Install the radiator and A/C condenser.
- Connect the negative battery cable.
- Start the engine and check the ignition timing. Adjust the timing, if necessary.