To inspect the front mount, raise the engine slightly to create tension on the rubber mount using a hoist or jack placed under the forward edge of the oil pan, and check for heat cracks on the hard rubber surface, rubber separating from the metal plate, or splits through the center. For the rear mount, elevate the vehicle and push up and down on the transmission tailshaft while observing the mount; if the rubber separates from the metal plate or the tailshaft moves excessively, replace the mount. If there is movement between the mount's metal plate and the attachment point, tighten the bolts or screws. To replace the front mount, relieve tension by raising the engine slightly, then remove the engine mount-to-engine block bolts and the through-bolt before taking out the mount. Install the new mount with through-bolts and nuts, followed by the engine mount-to-engine block bolts, ensuring they are torqued to specifications. For the rear mount replacement, raise the engine to relieve weight, remove the bolts attaching the crossmember to the mount, and then take out the mount-to-transmission bolts before removing the engine mount. Finally, install the new mount on the transmission, aligning and starting the crossmember-to-mount bolts while lowering the transmission onto the mount, and torque-tighten the bolts.