MG Clutch Kit (Pressure Plate, Clutch Disc, Release Bearing) Installation Procedure

I. Preparation (Safety & Tools)

1. Park the vehicle on a flat surface, turn off the engine, engage the parking brake, and place wheel chocks on both front and rear wheels. Disconnect the negative terminal of the battery and wait 10 minutes for power discharge.

2. Lift the vehicle to an appropriate height using a car lift. Remove the transmission side cover, driveshaft (for rear - wheel - drive models) or drive axle shaft (for front - wheel - drive models).

Tool List

Material List

II. Removal of Old Components (Removal Sequence Serves as Installation Reference)

1. Lock the flywheel with a special tool to prevent crankshaft rotation. Loosen and remove the pressure plate bolts (usually 6 pieces) in 2–3 crisscross steps, then take off the old pressure plate and clutch disc.

2. Remove the release bearing and fork: Take out the release bearing circlip and check for abnormal noise or jamming of the bearing. Remove the fork and hydraulic lines (mark the routing) and drain the old hydraulic fluid.

3. Cleaning and Inspection: Clean the flywheel surface and crankshaft pilot bearing bore. Check the flywheel flatness (runout ≤ 0.15mm), pressure plate warpage (limit 0.15mm), and clutch disc thickness (new part approx. 7.5mm, wear limit 6.5mm). Replace components if out of tolerance.

III. Installation of New Kit (Core Precision Control)

1. Pilot Bearing and Lubrication: Replace the crankshaft pilot bearing and apply grease. Lubricate the clutch disc splines and the contact area between the release bearing and fork with lithium - based grease. Strictly prohibit oil contamination on the friction surface of the clutch disc.

2. Clutch Disc Positioning: Insert the alignment tool through the clutch disc splines and crankshaft pilot bearing. Ensure the side marked “Flywheel Side” faces the flywheel, and align the marks with the flywheel locating pins.

3. Pressure Plate Installation: Fit the pressure plate to the flywheel, insert new bolts, and tighten them evenly to the specified torque (general 25N・m, tolerance ±3N・m) in 3 crisscross steps. Remove the alignment tool.

4. Release Bearing and Fork Assembly: Install the new release bearing and secure it with the circlip. Connect the fork to the hydraulic lines and tighten the mounting bolts to 20–25N・m. Check the release finger clearance (standard approx. 1.0mm).

5. Transmission Reinstallation: Clean the transmission input shaft splines, slowly push the transmission into place to align with the locating pins, and tighten the transmission bolts in a crisscross pattern according to the vehicle manual.

IV. Hydraulic System Bleeding and Adjustment

1. Fill new hydraulic fluid to the level line. Use the “one person depresses the pedal, one person bleeds” method: Loosen the slave cylinder bleed screw (torque 12–17N・m), bleed continuously until no air bubbles emerge, and keep the fluid level sufficient during the process.

2. Pedal Travel Adjustment: Ensure the free travel is 15–20mm and the total travel meets the vehicle requirements, with no jamming or abnormal noise.

V. Testing and Acceptance

1. Reconnect the negative battery terminal, start the engine, and test for smooth clutch engagement, no slipping/shuddering, and smooth gear shifting.

2. Road Test: Test low - speed start, gear shifting, and rapid acceleration. Check for no abnormal noise, complete clutch disengagement, and no hydraulic fluid leakage.

Precautions for MG Clutch Kit Installation

I. General Safety and Pre - installation Precautions

Vehicle Securing and Power - Disconnection Specifications

1. The vehicle must be parked on a level surface. Engage the parking brake and place wheel chocks in front of and behind the wheels to prevent rolling. Lock the safety device of the car lift; it is strictly prohibited to work under the vehicle when the lift is not locked.

2. Disconnect the negative terminal of the battery before installation and wait 10 minutes for the capacitors to discharge completely. This prevents short circuits caused by accidental contact with wires when removing the transmission. For hybrid models, additionally disconnect the negative terminal of the high - voltage battery and strictly follow high - voltage safety specifications.

Compliance Requirements for Tools and Materials

1. Special tools must be used: A clutch alignment tool (to ensure coaxiality between the clutch disc and the crankshaft) and a flywheel locking tool (to prevent crankshaft rotation when removing pressure plate bolts). Do not use screwdrivers or steel bars as substitutes, as this will cause clutch disc misalignment and clutch judder.

2. Consumables must match the vehicle model: Use MG original - equipment - specification hydraulic fluid (e.g., DOT 4 brake fluid, which also serves as clutch fluid). Only lithium - based high - temperature grease should be used for lubrication; engine oil or butter is strictly prohibited (they melt easily at high temperatures and contaminate the friction plate).

3. Replace parts as a complete set: Prefer original or matching - brand clutch three - piece sets. Meanwhile, inspect and replace the pilot bearing and flywheel bolts (one - time replacement is recommended; they should not be reused).

Marking Points Before Removing Old Components

1. When removing the driveshaft/drive axle shaft, mark the relative position of the universal joint and flange to ensure consistent angles after reinstallation and avoid vibration during driving.

2. When removing hydraulic lines, label the connector positions with tags to prevent incorrect reconnection. Seal the line openings with clean plugs to prevent dust from entering the hydraulic system.

II. Key Installation Accuracy Control Precautions

Cleaning and Inspection of the Flywheel and Pressure Plate

1. The flywheel surface must be thoroughly cleaned: Use a special cleaning agent to remove oil, rust, and wear debris; no grease residue is allowed. Check the flywheel flatness. Use a dial indicator to measure the runout, which must be ≤ 0.15mm. If it exceeds the limit, grind or replace the flywheel; otherwise, it will cause uneven clutch engagement and abnormal noise.

2. Inspect the pressure plate before installation: The height difference of the diaphragm spring release fingers must be ≤ 0.5mm. If the heights are inconsistent, calibrate with a special tool; otherwise, incomplete disengagement and difficult gear shifting will occur.

3. References：
   

4. This source documentation covers five core dimensions: official authoritative materials, industry standards, third - party technical references, practical integration, and traceable verification of all sources. It applies to the installation of the clutch three - piece set (pressure plate, clutch disc, release bearing) on mainstream MG models such as MG3, MG5, and MG7.

5. I. Core Authoritative Sources (Official Service Materials)

6. Brand/Model	Official Document Name	Key Referenced Content
   All MG Series	MG Official Service Manuals (e.g., MG3/MG5/MG7 Original Factory Service Procedures), SAIC Passenger Vehicle After - Sales Technical Documents	Flywheel runout ≤ 0.15mm, pressure plate bolt torque 25–30N・m, hydraulic fluid DOT 4, clutch pedal free travel 15–20mm
   MG6/MG5	MG 6 2011 Service Manual, MG5 2011 Original Factory Service Manual	Release bearing installation specifications, hydraulic system bleeding process, hydraulic line connector torque 15–19N・m
   MG Universal	Launch Repair Database (MG Model - Specific Data)	Crisscross tightening of pressure plate bolts, release finger height difference ≤ 0.5mm, one - time replacement requirement for pilot bearing/flywheel bolts

7. II. Industry - Wide Universal Standards and Specifications

8. General Technical Specifications for Automotive Maintenance: Crisscross tightening in 2–3 stages, bolt torque tolerance ±2N・m, alignment requirements for belts/clutch discs, principle of replacing new parts as a complete set.

9. General Specifications for Brake Fluid/Hydraulic Systems: DOT 4 brake fluid (also used as clutch fluid) application standards, hydraulic system bleeding operation guidelines, anti - leakage requirements for line connectors.

10. General Technical Regulations for Automotive Clutch Installation: The side of the clutch disc marked “Flywheel Side” faces the flywheel, the friction plate must be free of oil contamination, and specifications for using lithium - based high - temperature grease on the release bearing.

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