ISUZU Clutch Release Bearing 42×62×24mm High-quality Bearing Steel OEM Standard Replacement for NPR 4BE1
| Inner Diameter: | 42mm | Outer Diameter: | 62mm |
| Thickness: | 24mm | Net Weight: | 0.4～0.425 Kg |
| Material: | High-quality Bearing Steel | Installation Position: | Front Of Transmission Input Shaft / On Release Fork |
| Compatible Engine: | ISUZU 4BE1, 4BE2 | Compatible Models: | ISUZU NPR, NKR, NHR, ELF |
| High Light: | 42×62×24mm Clutch Release Bearing,High-quality Bearing Steel Throw-out Bearing,OEM Standard Replacement Release Bearing Assembly |
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The ISUZU Clutch Release Bearing with OEM numbers 8-97023074-0 / 8970230740, reference RCT473, is a precision-engineered replacement designed for ISUZU NPR series trucks, compatible with 4BE1 diesel engines. This component is a core actuation element of the clutch system, responsible for pushing the clutch pressure plate diaphragm spring when the driver depresses the clutch pedal, enabling smooth disengagement and engagement of engine power to the transmission.
The clutch release bearing (also known as "throw-out bearing") is a key component of the clutch actuation mechanism, installed on the release fork at the front of the transmission input shaft.
- Disengagement Process: When the driver depresses the clutch pedal, hydraulic or mechanical force pushes the release fork forward, moving the release bearing toward the diaphragm spring fingers of the pressure plate.
- Friction Reduction: The release bearing features a precision rolling bearing design — during high-speed rotation of the pressure plate, the bearing outer ring rotates with the pressure plate while the inner ring remains stationary, effectively reducing friction and wear.
- Power Cut-off: The release bearing pushes the diaphragm spring, separating the pressure plate from the clutch disc, cutting off engine power transmission to the transmission for gear shifting.
- Engagement Process: When the driver releases the clutch pedal, the release bearing retracts under return spring force, and the pressure plate re-engages the clutch disc, restoring power transmission.
| Symptom | Probable Cause |
|---|---|
| "Squeaking" or "grinding" metallic noise when depressing the clutch pedal | Worn or poorly lubricated bearing internals |
| Clutch pedal feels heavy and hard to press | Sticking or severely worn release bearing; increased resistance |
| Clutch fails to disengage fully; difficult shifting, gear grinding | Worn bearing reducing travel; pressure plate cannot fully disengage |
| Clutch shudder or vibration during driving | Uneven bearing wear causing uneven pressure plate loading |
| Persistent metallic noise near transmission (noticeable at idle, disappears when pedal is pressed) | Severely worn or damaged release bearing |
| Part Number: | 8-97023074-0 8970230740 | Product Name: | Clutch Release Bearing |
| Car Model: | NPR | Engine Model: | 4BE1 |
| Condition: | 100% Brand New | Size: | Standard |
| Origin: | China Mainland | Main Market: | Middle East, Asia, Africa, South America, North America & Europe |
- Number Confirmation: Verify the specific number on the original part before ordering
- Associated Components: Recommended to inspect or replace clutch pressure plate and disc simultaneously
- Installation Lubrication: Apply high-temperature grease to contact surfaces
- Post-Installation Adjustment: Clutch pedal free play must be adjusted to specification (recommended clearance: 2.5mm)
- Professional Installation: Critical component requiring transmission removal — professional installation strongly recommended
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