Replacing Jeep YJ and TJ Wrangler or XJ Cherokee motor mounts can be done easily and more safely. Before you attempt to change motor mounts with a floor jack and block of wood under the oil pan, consider using an engine support bar as shown in this how-to video. Save time, reduce risk of injury and avoid parts damage when performing this common repair.
When raising or supporting the engine, a floor jack can dent or even collapse the oil pan. The oil pan gasket is always at risk when supporting an engine’s weight on a floor jack. The better method is an engine support bar that offers stability, controlled lifting and better visibility when raising the engine to remove motor mounts. A support bar works far better than an engine cherry picker/hoist and is able to control and stabilize an inline/upright four or six-cylinder engine. The bar’s legs have rubber pads for careful placement on solid areas of the fender ledges. See the video for details.
Using an inexpensive (currently $85 when not on sale) Harbor Freight Engine Support Bar, we quickly and easily lifted the 4.0L XJ Cherokee engine just the right amount to slide out the worn mounts and install new ones. Importantly, we lifted just high enough at each side to do the job, which took an hour and a half using air tools. At no point were we at risk of physical injury although goggles are highly recommended for the steps beneath the vehicle. Watch the fan-to-radiator and shroud clearance during this repair.
New motor mounts are readily available in the aftermarket, we went with Crown parts available at Summit Racing. Omix-ADA and others offer these parts. Read the reviews and choose wisely.—Moses Ludel