2005 Jeep Liberty CRD Timing Belt Change

For years, small diesel engine manufacturers have been using overhead cam designs as a way to get the most out of a limited-displacement platform. Unfortunately, many small overhead cam mills utilize a timing belt to drive the camshafts (as opposed to a more durable timing chain), making them interference engines. This means timing belt failure can lead to piston-to-valve contact and other catastrophic internal damage, but more importantly it makes replacing the belt inevitable if you want the engine to last. Many manufacturers specify a 100,000-mile change interval; such was the case with the 2.8L VM Motori in our ’05 Jeep Liberty CRD. Because timing belt replacement is a very important preventative maintenance measure, any questionable components should be replaced, and well-documented problem areas addressed to rule out future hassles. Since we were going this far into the engine, it behooved us to start with a fresh water pump, thermostat, new pulleys, tensioner, and, of course, the timing belt. After conducting some online research, we obtained the special timing belt service tools we needed, ordered a complete timing belt kit from Factory OEM Parts (mopar-wholesale.com), and took the Jeep to Flynn’s Shop in Alexander, Illinois, to perform the tedious task. Parts List
Total $801.33 Part: OE Part Number: Price: Timing belt 5142579AA $161.66 Belt tensioner 5142798AA $95.99 Idler pulley 5142573AA $27.26 (2) Timing cover gasket 5066921AA $17.29 Water pump 5142985AA $259.60 Water pump gasket 4864575 $3.13 Water pump O-ring 5159019AA $9.15 Thermostat and housing 5142601AA $96.72 Serpentine belt 5072437AC $103.27 *We didn’t need the water pump O-ring due to the water pump being shipped with one.
*The new timing cover gasket isn’t crucial, as it’s simply a dust seal (the factory one can be reused).