Engine Mounts 01.01 Front Engine Mount Replacement Replacement 6. Install the upper isolator(s) in the engine mount. If applicable, place the snubber(s) on the isola- tor(s). 1. Apply the parking brakes, chock the tires, and (if applicable) drain the air brake system. WARNING WARNING The lifting device and chain used to lower the engine must be capable of safely lifting and sup- porting two metric tons. Once the engine is re- moved from the engine stands, do not get under the engine until it is securely installed on the en- gine mount. An unsecured engine may fall, caus- ing personal injury or death, and component damage.
The lifting device and chain used to lift the en- gine must be capable of safely lifting and sup- porting two metric tons. Once the engine mount is disconnected, do not get under the engine un- til it is securely supported on engine stands. An unsecured engine may fall, causing personal in- jury or death, and component damage. 2. Disconnect the front engine mount from the frame crossmember. 7. Secure the front engine mount to the frame crossmember. 7.1 Attach a chain to the front engine lifting hook(s). Attach the chain to a lifting de- vice and remove any slack. 2.1 Attach a chain to the front engine lifting hook(s), and position a lifting device to lift the engine.
Attach the chain to the lifting device, and raise the chain to remove any slack. 7.2 Lift the engine slightly to remove the en- gine stands. Remove the stands, and carefully lower the engine onto the engine mount. 2.2 Remove the bolt(s) from the front engine mount. Save the fasteners, rubber isolator cushions, and snubber(s). 7.3 Holding the lower isolator(s) and tube(s) in place, install the bolt(s) in the front en- gine mount and secure it with the nut(s) and washer(s). Tighten the nuts 136 lbf·ft (184 N·m). NOTE: In order to raise the front of the en- gine, you may have to loosen the bolts that run through the rear engine mounts.
2.3 Lift the engine slightly to take its weight off the front engine mount. Place engine stands under the engine to keep it off the engine mount. NOTE: If you loosened the bolts that run through the rear engine mounts, tighten those bolts 241 lbf·ft (327 N·m) for all en- gines. 3. If necessary, remove the bolts which secure the engine support bracket to the front of the engine. Remove the bracket from the engine. 7.4 Remove the lifting chain from the engine lifting hooks. 4. If necessary, install a new engine support bracket on the front of the engine. Secure per manufacturer specifications. 8. Remove the chocks from the tires. 5.
Inspect the engine mount rubber isolators for wear or damage and replace them if necessary. CAUTION Do not lubricate the components with oil, grease, or silicone lubricants; they will deteriorate the rubber isolators. Business Class M2 Workshop Manual, Supplement 0, January 2002 110/1