Generator C2D2746 C2D16464 C2Z18797 C2D42135 C2D59620 T2H15686 is suitable for Jaguar XF XJ

1. Use a 3/8 - inch drive tool (such as a ratchet wrench) to turn the belt tensioner counterclockwise to loosen and remove the serpentine belt.

2. Chock the rear wheels, lift the vehicle with a jack and secure it with jack stands to ensure the vehicle is stable.

3. Remove the engine under - cover. There are usually several screws at the front, several nuts in the middle, and two bolts on each side towards the back of the plastic part.

4. Remove the air duct of the generator, which may have 2 screws of 7/32 - inch.

5. Remove the radiator splash shield.

6. Remove the nut of the passenger - side engine mount, with a specification of 15mm.

7. Place a 2x4 piece of wood on the jack, put the jack under the oil pan, and lift the engine about 3 inches.

8. Remove the engine mount support bracket, which has 4 bolts of 13mm.

9. Disconnect the cable nut connected to the generator, with a specification of 13mm.

10. Disconnect the electrical connection on the back of the generator. The lock tab of the connector is at the top, and you need to squeeze the lock tab to pull it out.

11. Separate the cable connected to the frame behind the generator from the frame. The cable is fixed by a plastic clip.

12. Remove the nut at the bottom of the generator, with a specification of 15mm.

13. Find the bolt at the top of the generator. Use a short 1/4 - inch drive ratchet wrench with an extension rod and a 13mm socket. Move the wires to the right for easy operation and remove the top bolt.

14. Push out the bolt at the bottom of the generator. If the bolt is very tight, you can unscrew it from the front with a 13mm socket.

15. Use a screwdriver and other tools to separate the bottom of the generator from the bracket on the frame, and then remove the generator from the top - bolt position.

1. Put the new generator into the installation position through the top bolt, but do not fully tighten the top bolt.

2. Adjust the position of the generator so that the bottom is aligned with the bracket on the frame, and then insert the bottom bolt and initially tighten it.

3. Connect the electrical connector on the back of the generator to ensure a firm connection.

4. Connect the cable of the generator and tighten the nut.

5. Re - fix the cable behind the generator to the frame.

6. Install the engine mount support bracket and tighten the 4 bolts of 13mm.

7. Lower the engine, remove the jack and the wood, and install the nut of the passenger - side engine mount.

8. Install the radiator splash shield and the air duct of the generator.

9. Install the engine under - cover.

10. Put the serpentine belt on the pulley and adjust the belt tension through the tensioner to ensure that the belt is correctly installed in the grooves of all pulleys.

I. Core Precautions Before Installation

1. Priority to Safety Protection

• The negative battery cable must be disconnected, and the engine must be allowed to cool down completely before operation to prevent electric shock, scalding, or accidental engine startup. After the vehicle is lifted, it must be fixed with jack stands. It is forbidden to operate with only the jack for support to avoid vehicle rollover and personal injury.

• Wear insulated gloves, goggles, and non-slip gloves. This not only prevents tools from slipping and damaging precision components in the engine compartment (such as circuits and radiators) but also avoids personal scratches from sharp components or electrical hazards.

• The operation area must be kept clean, irrelevant debris should be cleared, and tools should be placed in an orderly manner to prevent tripping during operation or damage to components caused by falling tools.

2. Preparation of Components and Tools

• Confirm that the new generator model is strictly compatible with the Jaguar X350, and verify parameters such as mounting holes, terminal types, and pulley specifications. Avoid installation failures, short circuits in the electrical system, or abnormal power generation caused by mismatched models.

• Inspect the new generator for no external damage or deformation, and ensure the terminals are free of rust. Manually rotate the rotor to confirm it rotates flexibly without jamming or abnormal noise. If there are auxiliary components such as sensors and wire clips on the old generator, they must be completely removed and installed at the corresponding positions of the new generator to ensure continuous functionality.

• Prepare tools of matching specifications, such as a 3/8-inch drive ratchet wrench, a short 1/4-inch ratchet wrench with an extension rod, 13mm/15mm sockets, a 7/32-inch screwdriver, and a 2x4-inch wooden board. Avoid using ill-fitting tools that may cause bolt thread damage or component deformation.

• Check the status of auxiliary components in advance. For example, if the serpentine belt has cracks, wear, aging, or other issues, it should be replaced simultaneously. If engine mounts, cable clips, under-cover fasteners, etc., are damaged, they must be repaired or replaced first.

II. Operational Specifications During Installation

1. Mechanical Installation Details

• When removing/installing the serpentine belt, use special tools to operate the tensioner with uniform force. Violent prying or pulling is prohibited to prevent the tensioner spring from breaking and the belt from slipping off. After installation, confirm that the belt is fully embedded in the grooves of all pulleys without deviation or distortion.

• When lifting the engine, the wooden board must be stably placed under the oil pan to avoid direct contact with the engine casing causing deformation. The lifting height should be just enough to remove the bracket (about 3 inches). Over-lifting is not allowed to prevent the engine pipelines from being stretched under force.

• Bolts must be installed in the order specified by the original vehicle. For the 4 13mm bolts of the engine mount support bracket, the 13mm bolt at the top of the generator, and the 15mm bolt at the bottom, it is recommended to tighten them to the torque specified in the maintenance manual (usually 20-30N・m, with specific values subject to the vehicle model manual) to avoid component loosening or deformation due to uneven force.

• When removing/installing the engine under-cover and radiator splash shield, pay attention to protecting the plastic components. Violent tapping is prohibited to prevent cracking. After installation, ensure all fasteners are complete and tight to avoid abnormal noise or falling off during driving.

2. Electrical Connection Requirements

• Before disconnecting the generator's electrical connections, you can take photos to record the wire positions to avoid incorrect connection later. When removing the cable nuts, unscrew them gently and slowly to prevent nut thread damage or cable terminal deformation.

• When connecting the electrical connector, confirm that the lock tab is fully engaged. After hearing a "click" sound, pull the cable slightly to verify a firm connection. It is forbidden to start the vehicle without engaging the lock tab to prevent the connector from falling off during driving, resulting in power generation interruption.

• When re-fixing the generator cable to the frame, it must be clipped into the original plastic clip. Avoid the cable coming into contact with high-temperature areas of the engine (such as the exhaust pipe) or rotating components to prevent aging and damage to the cable insulation layer, which may cause a short circuit.

• References：The content in this article regarding the installation methods and precautions for the 12V generator of Jaguar vehicles is partially similar to information from multiple sources but does not fully match any of them. For example, the relevant content on Jaguar Forums (jaguarforums.com) mainly focuses on the disassembly and installation steps of Jaguar vehicle generators, while the content on platforms such as Autohome and PCauto focuses more on the wiring precautions and general installation steps of generators.