2012 Land Rover LR2 Service and Repair Manual

ENGINE Accessory Drive ACCESSORY DRIVE (I6 3.2L PETROL) SPECIFICATIONS TORQUE SPECIFICATIONS DESCRIPTION & OPERATION ACCESSORY DRIVE (3.2L) COMPONENT LOCATION Description Nm lb-ft Accessory drive belt idler pulley bolt 25 18 Accessory drive belt tensioner retaining bolt 25 18 Accessory drive component bracket: M10 50 36 M8 24 18 Accessory drive pulley 60 44 2008 Land Rover LR2 HSE ENGINE Accessory Drive

Item Number Description 1 Air Conditioning (AC) compressor 2 Idler pulley 3 Power steering pump and coolant pump pulley 4 Adjuster pulley 5 Drive pulley 2008 Land Rover LR2 HSE ENGINE Accessory Drive

2008 Land Rover LR2 HSE ENGINE Accessory Drive

OVERVIEW One of the major innovations to the engine's design is the positioning of the accessory drive and its associated ancillaries at the rear of the engine. The accessory drive system overhangs the transmission, allowing the front of the engine to be free of protrusions. This unique design contributes to providing a compact and robust engine. The polyvee accessory drive-belt obtains its drive from a shaft, powered by the crankshaft. The accessory drive- belt powers the:  AC compressor,  engine coolant pump, and  power steering pump The engine coolant pump and the power-steering pump share a common coupling. Belt tension is maintained by an automatic tension system which provides a constant tension without belt slip. The generator is directly attached by a coupling to the rear of the crankshaft driven shaft. This direct drive arrangement improves the generator's durability by preventing side-loadings, caused by the tension of a drive belt, acting on the generator's rotor bearing. In addition to helping make the engine compact and robust, the novel arrangement of the accessory drive system also aids in reducing engine weight. DIAGNOSTIC PROCEDURES ACCESSORY DRIVE PRINCIPLES OF OPERATION For a detailed description of the Rear End Accessory Drive (READ), refer to the relevant Description and Operation workshop information. Refer to ACCESSORY DRIVE - 3.2L . INSPECTION AND VERIFICATION Item Number Description 1 Power Steering pump 2 AC compressor 3 Idler pulley 4 Coolant pump 5 Adjuster mechanism 6 Drive pulley 7 Generator 2008 Land Rover LR2 HSE ENGINE Accessory Drive

1. Verify the customer concern. 2. Visually inspect for system integrity and obvious signs of damage. VISUAL INSPECTION 3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step 4. If the cause is not visually evident, verify the symptom and refer to the Symptom Chart. SYMPTOM CHART Mechanical  READ belt  READ belt tension  READ belt tensioner  READ belt pulleys  READ belt pulley seals Symptom Possible Cause Action READ belt noise or squeal  READ belt pulley(s)  Lubricant or other contamination  READ belt Check for pulley alignment, freedom of rotation and damage. Repair or install new parts as required. Refer to: Accessory Drive Component Bracket Alignment and Refer to: Accessory Drive Belt Idler Pulley and Refer to: Accessory Drive Pulley . Check READ belt for contamination. If contaminated, install a new belt. Refer to: Accessory Drive Belt . Check READ belt for correct application READ belt does not hold tension  READ belt cracking or damaged  Tensioner worn or damaged Inspect READ belt for cracking or damage. Install a new belt as required. Refer to: Accessory Drive Belt . Check READ belt tensioner for damage and correct operation. Install a new READ belt tensioner as required. 2008 Land Rover LR2 HSE ENGINE Accessory Drive

COMPONENT TESTS READ BELT TENSIONER Static The only checks required for the READ belt tensioner are for stick, grab or bind. 1. Remove the drive belt in the area of the tensioner. 2. Using the correct tool, rotate the tensioner from its relaxed position through its full stroke and back to the relaxed position to make sure there is no stick, grab or bind, and to make sure that there is tension on the tensioner spring. 3. If the tensioner meets the above criteria, proceed to the dynamic test. If the tensioner does not meet the above criteria install a new tensioner. REFER to:ACCESSORY DRIVE BELT TENSIONER . Dynamic The READ belt tensioner can be checked dynamically as follows: With the engine running, observe drive belt tensioner movement, the READ belt tensioner should move (respond) when the air conditioning clutch cycles (if equipped), the READ belt tensioner should move (respond) when the engine speed is increased rapidly. If the drive belt tensioner movement is erratic without air conditioning clutch cycling or engine acceleration, a pulley or shaft may be bent, or distorted. Excessive drive belt rideout (uneven depth of grooves in the drive belt) can also cause excessive drive belt tensioner movement. Check condition by installing a known good belt. REFER to: ACCESSORY DRIVE BELT . READ BELT 1. With the engine off, check routing of the drive belt. REFER to: ACCESSORY DRIVE - 3.2L . 2. Inspect the drive belt tensioner wear indicator to confirm the drive belt is within operating range. Install a new drive belt as necessary. REFER to: ACCESSORY DRIVE BELT . GENERAL PROCEDURES ACCESSORY DRIVE COMPONENT BRACKET ALIGNMENT Refer to: Accessory Drive Belt Tensioner . 2008 Land Rover LR2 HSE ENGINE Accessory Drive

Special Tool(s) 1. Drain the cooling system. Refer to COOLING SYSTEM DRAINING, FILLING AND BLEEDING . 2. Remove the LH engine mount. Refer to ENGINE MOUNT LH . 3. Raise and support the transmission to gain access to the engine mount bracket adjuster. 4. Release the bracket. 303-1224 Aligner, A/C Bracket NOTE: This procedure is to be used where an accessory drive belt alignment or accessory drive component bracket alignment is required. 2008 Land Rover LR2 HSE ENGINE Accessory Drive

5. Disconnect the coolant hose, to enable removal of the bolt. 2008 Land Rover LR2 HSE ENGINE Accessory Drive

6. Back-off both adjusters. 2008 Land Rover LR2 HSE ENGINE Accessory Drive

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2012 Land Rover LR2 Service and Repair Manual

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