Engine Mount Inspection - Chevrolet 5.7L Corvette 2004 Shop Manual

ENGINE MOUNT INSPECTION

NOTE: Broken or deteriorated mounts can cause misalignment and destruction of
certain drive train components. When a single mount breaks, the remaining
mounts are subjected to abnormally high stresses.
NOTE: When raising or supporting the engine for any reason, do not use a jack under
the oil pan, any sheet metal, or the crankshaft pulley. Due to the small clearance
between the oil pan and the oil pump screen, jacking against the oil pan may
cause the pan to be bent against the pump screen. This will result in a damaged
oil pickup unit.
1. Measure the engine movement at the engine mount in order to check for damage to the rubber portions of
the mount.
1. Apply the park brake.
2. Start the engine.
3. Firmly apply and hold the primary brakes.
4. Have an assistant stand to the side of the vehicle in order to observe for engine movement.
5. Slightly load the engine shifting from drive to reverse a few times.
6. If the engine moves more than 24 mm (0.945 in) from the at rest position, in either direction, check
for loose engine mount or engine mount bracket attachments.
2. If the engine mount and engine mount bracket bolt torque is at specifications, check the condition of the
engine mount.
3. Replace the engine mount if any of the following conditions exist:
Heat check cracks cover the rubber cushion surface.
The rubber cushion is separated from the metal plate of the mount.
There is a split through the rubber cushion.
ENGINE MOUNT BRACKET REPLACEMENT - LEFT
Removal Procedure