Chevrolet 30020645 Bracket,Engine Mount Frame Side

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Engine mounts seldom require attention, but broken or deteriorated mounts should be replaced immediately or the added strain placed on the drive line components may cause damage or wear. During the check, the engine must be raised slightly to remove the weight from the mounts. This can be done by raising the vehicle and supporting it securely on jack stands, then positioning a jack under the engine bellhousing. A large block of wood should be placed between the jack head and the bellhousing, then the engine should be carefully raised just enough to take the weight off the mounts. The mounts should then be checked to see if the rubber is cracked, hardened or separated from the metal plates. Sometimes the rubber will split right down the center. Check for relative movement between the mount plates and the engine or frame by using a large screwdriver or pry bar to attempt to move the mounts. If movement is noted, lower the engine and tighten the mount fasteners. Rubber preservative should be applied to the mounts to slow deterioration. To replace the mounts, disconnect the negative battery cable from the battery, then raise the vehicle and support it securely on jackstands. Remove the upper and lower nuts that attach the mount to the bracket. Raise the engine slightly with a jack or hoist, making sure the fan doesn't hit the radiator or shroud, and carefully remove the mount(s). Installation is the reverse of removal. Use thread locking compound on the mount bolts and be sure to tighten them securely.

The rubber should be checked for cracks, hardening, separation from the metal plates, or splitting down the center. The relative movement between the mount plates and the engine or frame should also be checked.