REMOVAL & INSTALLATION
See Figures 1 throught 13
- Drain the cooling system and crankcase. Remove the oil pan and radiator.
- Remove the cylinder front cover and water pump, drive belt, and camshaft timing gear.
- Use the clutch aligner T71P-P-7137-H or equivalent and remove the crankshaft sprocket.
- Align the keyway in the gear with the key, then slide the gear onto the shaft, making sure that it seats tight against the spacer.
Feed the timing chain around the crankshaft sprocket and then around the camshaft sprocket. Install the camshaft sprocket together with timing chain as an assembly. Align all necessary timing marks.
- Check the camshaft end play. Refer to checking Camshaft. If not within specifications, replace the thrust plate.
- Align the keyway in the crankshaft gear with key in the crankshaft, and align the timing marks. Install the gear, using Crankshaft Sprocket Replacer Tool.
- Install the cylinder front cover following the procedures in this section. Install the oil pan and radiator.
- Fill and bleed the cooling system and crankcase.
- Start the engine and adjust the ignition timing.
- Operate the engine at fast idle and check all hose connections and gaskets for leaks.
- Remove the timing chain tensioner.
- Rotate the crankshaft counterclockwise (as viewed from the front of the engine) to take up the slack on the left hand side of the chain.
- Mark a reference point on a block approximately at mid-point of the chain. Measure from this point to the chain.
- Rotate the crankshaft in the opposite direction to take up the slack on the right hand side of the chain. Force the left hand side of the chain out with your fingers and measure the distance between the reference point and the chain. The deflection is the difference between the two measurements.
- If the deflection measurement exceeds specification, replace the timing chain and sprockets.
- If the wear on the tensioner face exceeds 1.5mm, replace the tensioner.
- When installing the crankshaft sprocket, fill the keyway chamfer cavity with EOAZ-19554-AA Threadlock and Sealer or equivalent, flush with the front face of the sprocket.
See Figures 14 and 15
Review the complete service procedure before starting this repair. Refer to the necessary service procedures in this section.
- Remove the front cover.
- Remove the radiator.
- Rotate the engine by hand until the No.1 cylinder is at TDC compression, and the timing marks are aligned.
- Remove the camshaft sprocket bolt and sprocket retaining key.
- Remove the camshaft and crankshaft sprockets with the timing chain.
- If necessary, remove the tensioner and guide.
- Install the timing chain guide. Make sure the pin of the guide is in the hole in the block. Tighten the bolts to 84-96 inch lbs.
- Align the timing marks on the crankshaft and camshaft sprockets and install the sprockets and chain.
- Install the camshaft sprocket bolt and sprocket retaining key. Make sure that the timing marks are still aligned.
- Install the tensioner with the clip in place to keep it retracted.
- Install the crankshaft key. Make sure the timing marks are still aligned.
- Make sure the tensioner side of the chain is held inward and the other side is straight and tight.
- Install the camshaft sprocket bolt and tighten it to 50 ft. lbs.
- Remove the tensioner clip.
- Check camshaft end-play.
- Install the front cover and attaching bolts. Refer to the necessary illustration.