Tuesday, May 6, 2014
How to Take the Chain Off a 22R Engine
The R family of engines from Toyota, produced from 1981-85, were four-cylinder gasoline engines for front-wheel-drive vehicles. The 22R had a displacement of 2.4 liters and a single overhead camshaft. It used a timing chain, which had a lower risk of causing engine damage than a timing belt. The procedure for removing the timing chain from a 22R engine is generally the same for all vehicles.
Instructions
- 1
Disconnect the cable from the batterys negative terminal. This prevents the engine from starting during the timing chain removal. Remove the mounting bolts for the cylinder head with a socket wrench. Pry the cylinder head from the mounting dowels with pry bars in front and behind the valve rocker assembly. Lift the cylinder head off the mounting dowels.
2Drain the radiator, and detach the hoses from the radiator. Disconnect the mounting bolts for the radiator, and remove the radiator from the vehicle with a socket wrench. Perform this step only if the radiator blocks your access to the timing chain.
3Disconnect the oil pan with a socket wrench if it blocks your access to the timing chain.
4Relieve the tension on the drive belts with the belt tensioner, and remove the drive belts from their pulleys. Attach a suitable puller to the crankshaft pulley, and remove the pulley from the crankshaft.
5Remove the retaining bolts for the water bypass tube with a socket wrench, and detach the tube. Disconnect the heater tube. Remove the bolt for the alternator bracket, and push the bracket towards the alternator to access the timing chain cover.
6Disconnect the mounting bolts on the timing chain cover with a socket wrench, and remove the cover from the engine. Lift the timing chain off the camshaft damper. Slide the timing chain and camshaft sprocket off the camshaft.
7Pull the crankshaft sprocket from the crankshaft by hand. Lift the oil pump spline from the crankshaft, and pull it from the crankshaft by hand.
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