2005-2009 JEEP Grand Cherokee Service & Repair Manual

ENGINE - 3.0L TD SERVICE INFORMATION TABLE OF CONTENTS page page ENGINE - 3.0L TD SERVICE INFORMATION DESCRIPTION 3.0L COMMON RAIL DIESEL ENGINE ...... 2550 ENGINE COVER .......................... 2552 DIAGNOSIS AND TESTING ENGINE DIAGNOSIS - MECHANICAL ....... 2552 SMOKE DIAGNOSIS CHARTS ............. 2554 STANDARD PROCEDURE FORM-IN-PLACE GASKETS AND SEALERS . 2556 REPAIR DAMAGED OR WORN THREADS . . 2557 HYDROSTATIC LOCK ..................... 2557 REMOVAL 3.0L COMMON RAIL DIESEL ENGINE ...... 2558 ENGINE COVER .......................... 2562 INSTALLATION 3.0L COMMON RAIL DIESEL ENGINE ...... 2563 ENGINE COVER .......................... 2568 SPECIFICATIONS ENGINE SPECIFICATIONS ................ 2568 TORQUE ................................. 2575 SPECIAL TOOLS - 3.0L TURBODIESEL ....... 2577 ELEMENT-AIR CLEANER REMOVAL ................................. 2581 INSTALLATION ............................. 2582 HOUSING-AIR CLEANER REMOVAL ................................. 2583 INSTALLATION ............................. 2583 CHAMBER-MIXING DESCRIPTION ............................. 2584 REMOVAL ................................. 2584 INSTALLATION ............................. 2586 HEAD-CYLINDER DESCRIPTION ............................. 2588 STANDARD PROCEDURE CYLINDER HEAD BOLT INSPECTION ...... 2588 VALVE SEALS - IN VEHICLE ............... 2588 VALVE SERVICE .......................... 2590 REMOVAL LEFT .................................... 2592 RIGHT ................................... 2599 CLEANING ................................. 2606 INSPECTION ............................... 2606 INSTALLATION LEFT .................................... 2606 RIGHT ................................... 2617 SEAL(S)-CAMSHAFT OIL REMOVAL LEFT .................................... 2627 RIGHT ................................... 2630 INSTALLATION LEFT .................................... 2633 RIGHT ................................... 2636 CAMSHAFT(S) DESCRIPTION ............................. 2640 OPERATION ............................... 2640 REMOVAL LEFT .................................... 2640 RIGHT ................................... 2643 INSTALLATION LEFT .................................... 2645 RIGHT ................................... 2650 CYLINDER HEAD COVER DESCRIPTION ............................. 2655 REMOVAL RIGHT ................................... 2655 INSTALLATION RIGHT ................................... 2656 ARMS-ROCKER DESCRIPTION ............................. 2658 OPERATION ............................... 2658 REMOVAL ................................. 2658 INSTALLATION ............................. 2659 LIFTERS-HYDRAULIC DESCRIPTION ............................. 2660 REMOVAL ................................. 2660 INSPECTION ............................... 2661 INSTALLATION ............................. 2661 BLOCK-ENGINE DESCRIPTION ............................. 2662 CRANKSHAFT DESCRIPTION ............................. 2664 OPERATION ............................... 2664 STANDARD PROCEDURE MEASURE CRANKSHAFT AND BLOCK JOURNALS ............................. 2664 CHECKING CRANKSHAFT END PLAY ...... 2665 BEARINGS-CRANKSHAFT MAIN DESCRIPTION ............................. 2666 SEAL - CRANKSHAFT OIL - FRONT REMOVAL ................................. 2667 INSTALLATION ............................. 2669 SEAL-CRANKSHAFT OIL - REAR DESCRIPTION ............................. 2671 REMOVAL ................................. 2671 INSTALLATION ............................. 2672 FLEXPLATE DESCRIPTION ............................. 2673 REMOVAL ................................. 2673 INSTALLATION ............................. 2674 LINERS-CYLINDER DESCRIPTION ............................. 2675 INSPECTION ............................... 2675 9 - 2548 ENGINE - 3.0L TD SERVICE INFORMATION WK

ROD-PISTON AND CONNECTING DESCRIPTION ............................. 2676 STANDARD PROCEDURE PISTON RING FITTING .................... 2676 REMOVAL ................................. 2677 INSPECTION ............................... 2678 DAMPER-VIBRATION REMOVAL ................................. 2679 INSTALLATION ............................. 2681 PUMP-VACUUM DESCRIPTION ............................. 2683 OPERATION ............................... 2683 REMOVAL ................................. 2684 INSTALLATION ............................. 2684 MOUNT-LEFT REMOVAL ................................. 2685 INSTALLATION ............................. 2685 MOUNT-RIGHT REMOVAL ................................. 2686 INSTALLATION ............................. 2686 LUBRICATION DESCRIPTION ............................. 2687 OIL DESCRIPTION ............................. 2688 FILTER-OIL REMOVAL ................................. 2689 INSTALLATION ............................. 2689 PAN-OIL REMOVAL OIL PAN ................................. 2690 INSTALLATION OIL PAN ................................. 2691 VALVE-OIL PRESSURE RELIEF DESCRIPTION ............................. 2693 OIL PRESSURE SENDING UNIT DESCRIPTION ............................. 2694 OPERATION ............................... 2694 REMOVAL ................................. 2694 INSTALLATION ............................. 2695 PUMP-OIL REMOVAL OIL PUMP PICKUP TUBE ................. 2696 REMOVAL ............................... 2696 INSTALLATION OIL PUMP PICKUP TUBE ................. 2697 INSTALLATION ........................... 2698 JET-OIL DESCRIPTION ............................. 2699 REMOVAL ................................. 2699 INSTALLATION ............................. 2700 PCV DESCRIPTION ............................. 2701 REMOVAL ................................. 2701 INSTALLATION ............................. 2702 COOLER-OIL DESCRIPTION ............................. 2703 REMOVAL ................................. 2703 INSTALLATION ............................. 2704 MANIFOLD-INTAKE DESCRIPTION ............................. 2705 REMOVAL ................................. 2705 INSTALLATION ............................. 2707 MANIFOLD-EXHAUST REMOVAL RIGHT ................................... 2709 LEFT .................................... 2710 INSTALLATION RIGHT ................................... 2711 LEFT .................................... 2712 ACTUATOR-SWIRL VALVE DESCRIPTION ............................. 2713 REMOVAL ................................. 2714 INSTALLATION ............................. 2715 LINKAGE-SWIRL VALVE DESCRIPTION ............................. 2717 REMOVAL ................................. 2717 INSTALLATION ............................. 2719 COVER-TIMING CHAIN REMOVAL ................................. 2721 INSTALLATION ............................. 2723 SPROCKETS-TIMING CHAIN AND REMOVAL TIMING CHAIN GUIDE - UPPER ........... 2726 TIMING CHAIN TENSIONING RAIL ......... 2728 TIMING CHAIN ........................... 2729 INSTALLATION TENSIONING AND SLIDE RAIL ............ 2730 TIMING CHAIN TENSIONING RAIL ......... 2732 INSTALLATION - TIMING CHAIN ........... 2733 TENSIONER-TIMING CHAIN DESCRIPTION ............................. 2738 REMOVAL ................................. 2738 INSTALLATION ............................. 2739 BALANCE SHAFT DESCRIPTION - BALANCE SHAFT ........... 2740 REMOVAL - BALANCE SHAFT ............... 2740 INSTALLATION — BALANCE SHAFT ......... 2743 WK ENGINE - 3.0L TD SERVICE INFORMATION 9 - 2549

ENGINE - 3.0L TD SERVICE INFORMATION DESCRIPTION 3.0L COMMON RAIL DIESEL ENGINE The 3.0L (183 C.I.D.) six - cylinder “common rail” direct injection engine is a 72°, overhead valve design. The engine utilize a cast aluminum cylinder block molded around cast iron piston sleeves. The engine has aluminum cross flow cylinder heads, four valves per cylinder, central injectors and dual overhead camshafts. The 3.0L is turbocharged, intercooled, and also equipped with a EGR cooler. Additional features are: • Finger Follower Actuated Valves with Hydraulic Adjusters • Counter Rotating Balance Shaft • Oil Jet Cooled Pistons • Swirl Intake Ports • Chain driven D.O.H.C. per bank of cylinders, with 4 valves per cylinder 9 - 2550 ENGINE - 3.0L TD SERVICE INFORMATION WK

The engine identification stamp (3) for the 3.0L is located on the left side of the engine block, below the high pressure pump along with the 4 digit main bearing identifying stamp (2) and the 6 digit cylinder bore identifying stamp (1). The engine identification number encompasses the production number, engine plant code, engine type and engine model. WK ENGINE - 3.0L TD SERVICE INFORMATION 9 - 2551

ENGINE COVER The insulated engine cover (1) is made of composite material and used cosmetically to cover the top of the engine and greatly reduce engine noise. Three brack- ets secure the cover to the engine. DIAGNOSIS AND TESTING ENGINE DIAGNOSIS - MECHANICAL CONDITION POSSIBLE CAUSES CORRECTION LUBRICATING OIL PRESSURE LOW 1. Low oil level. 1. (a) Check and fill with clean engine oil. (b) Check for a severe oil leak, worn rings (burning oil), oil leaking from the turbocharger to the intake, or other root causes for low oil level. 2. Oil viscosity thin, diluted or wrong specification. 2. (a) Verify the correct engine oil is being used. (b) Look for reduced viscosity from fuel dilution. 3. Improperly operating pressure switch/gauge. 3. Verify the pressure switch is functioning correctly. If not, replace switch/gauge. 4. Relief valve stuck open. 4. Check/replace valve. 5. If cooler was replaced, shipping plugs may have been left in cooler 5. Check/remove shipping plugs. 6. Worn oil pump. 6. Check and replace oil pump. 7. Suction tube loose or seal leaking. 7. Check and replace seal. 8. Loose main bearing cap. 8. Check and install new bearing. Tighten cap to proper torque. 9. Worn bearings or wrong bearings installed. 9. Inspect and replace connecting rod or main bearings. Check and replace directed piston cooling nozzles. 10. Directed piston cooling nozzles under piston, bad fit into main carrier. 10. Check directed piston cooling nozzles position. 9 - 2552 ENGINE - 3.0L TD SERVICE INFORMATION WK

2005-2009 JEEP Grand Cherokee Service & Repair Manual

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