1-31220364-2 350 mm Heavy-Duty Cast Iron Clutch Pressure Plate TS16949 Certified for ISUZU FRR FSR FTR FVR 6HH1 6HE1 6HK1

The clutch pressure plate assembly is a spring-loaded mechanism that presses the clutch disc against the engine flywheel when the clutch pedal is released. It consists of a heavy-duty cast iron cover, a diaphragm spring, a pressure plate, and a release mechanism.

When the clutch pedal is depressed, the release bearing pushes against the diaphragm spring, releasing the clamping force on the clutch disc and allowing the engine to disconnect from the transmission. When the pedal is released, the diaphragm spring forces the pressure plate to clamp the clutch disc firmly against the flywheel, transmitting engine torque to the transmission input shaft.

The 6HH1 is an 8.2L inline-six direct-injection diesel engine producing approximately 175 kW (238 HP), widely used in ISUZU FRR/FSR/FTR trucks from 1996 to 2003. The 6HE1 is a 7.1L variant, and the 6HK1 is a 7.8L engine used in later models.

Replace the clutch pressure plate assembly when any of these symptoms appear:

• Clutch slipping under acceleration — a weakened diaphragm spring cannot maintain adequate clamping force, causing engine RPM to rise without a corresponding vehicle speed increase.
• Clutch pedal pulsation or vibration — a warped or cracked pressure plate surface causes uneven engagement.
• Difficulty engaging or disengaging gears — a damaged release mechanism prevents smooth clutch operation.
• Chattering or shuddering during clutch engagement — a worn pressure plate surface or damaged diaphragm spring causes vibration during engagement.
• Burning smell from the clutch area — severe slipping produces a characteristic burning odor from the friction material.
• Visible cracks, scoring, or heat spots on the pressure plate surface — indicates the pressure plate has overheated or exceeded its service life.

1. Preparation: Disconnect the battery negative terminal. Raise the vehicle on a hoist. Remove the transmission from the engine.
2. Removal: Remove the clutch cover bolts in a diagonal sequence. Remove the pressure plate and clutch disc. Inspect the flywheel surface for cracks, heat spots, or scoring.
3. Inspection: Inspect the flywheel for flatness and surface condition. Resurface or replace if any abnormality is found. Inspect the transmission input shaft splines for wear.
4. Preparation for New Clutch: Clean the flywheel surface with brake cleaner. Apply a thin coat of high-temperature grease to the transmission input shaft splines.
5. Installation: Position the new clutch disc on the flywheel with the alignment tool inserted through the disc hub. Install the pressure plate and hand-tighten the bolts. Tighten the clutch cover bolts to specification in a diagonal sequence.
6. Transmission Installation: Remove the alignment tool. Carefully install the transmission onto the engine, ensuring the input shaft splines engage the clutch disc hub.
7. Final Check: Verify the clutch pedal free play is within specification (10 mm). Check the clutch release bearing operation.
8. Road Test: Perform a road test to verify smooth clutch engagement and disengagement.

• Every 10,000 km: Check clutch pedal free play. Inspect for clutch slipping or chattering.
• Every 40,000–50,000 km: Inspect clutch operation. Check for abnormal noise or vibration.
• When clutch slipping is detected: Inspect the clutch pressure plate immediately. Replace if the diaphragm spring is weak or the pressure plate surface is worn.
• At clutch replacement: Always replace the pressure plate, clutch disc, and release bearing as a complete kit.

• Standard Packaging: Anti-rust oil + VCI film + neutral carton.
• Custom Packaging: Neutral box, color box, or customer-branded packaging.
• Suitable For: Clutch system repair shops, ISUZU parts distributors, fleet maintenance centers.
• Supply Capacity: Stable batch supply with batch-level quality reports available.
• MOQ: Unlimited (better price for more quantity).