Toyota 12371-0S020 Insulator, Engine Mounting, Rear

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Engine mounts do not commonly need service but if the mounts are broken or have perished they should be replaced before the damage spreads to other driveline parts. This is because during check the engine must be lifted slightly off the mounts to reduce weight on the mounts and it will be mounted between the front and rear Transmission cross-members. Start by lifting the car and placing it on jackstands and then placing a jack under the engine oil pan with a large wooden beam between the jack head and the oil pan, should lift the engine slightly off the mounts but it should not get to the drain plug. Look for any cracks, hardened rubber or separation of the mount from the metal plates; also, try applying a large screwdriver or pry bar between the mount plates and the engine or frame. If there is any movement, lower the engine and snug the mount fasteners up. To remove a mount, the connection between the mount and negative terminal of battery must be disconnected and the vehicle must be lifted off the ground with jackstands if not already. Next, unbolt it, lift the engine, and then unbolster the mount with the help of an engine lift or a floor jack together with a wooden plank placed under the oil pan. If one mount is being replaced remove the mount-to-engine bracket nut on the other mount to provide enough clearance for removal. Installation also involves the use of the procedures that are in the reverse, where non-hardening thread locking compound is used on the mount bolts and nuts, and they must be properly tightened.

Disconnect the negative battery cable from the battery, then raise the vehicle and support it securely on jackstands (if not already done). Support the engine.

If movement is noted, lower the engine and tighten the mount fasteners.

Check the mounts for any cracks, hardened rubber, or separation from the metal plates. Sometimes the rubber may split down the center.