1-31321073-2 1313210732 Clutch Shift Block Clutch Release Bearing Carrier for ISUZU 10PE1 6WF1

The Clutch Shift Block with OEM numbers 1-31321073-2 and 1313210732 is a verified direct-fit replacement for ISUZU EXZ / CXZ / CXZ81 / CXZ51K / CYZ51K heavy-duty trucks equipped with 10PE1 / 6WF1 diesel engines. This clutch release bearing carrier is a critical component of the clutch release mechanism, mounted between the clutch release fork and the release bearing. It carries the release bearing and guides it precisely along the transmission input shaft axis during clutch engagement and disengagement.

The clutch shift block is the key guiding component in the clutch release system that connects the release fork to the release bearing. When the driver depresses the clutch pedal, the clutch booster pushes the release fork, which transmits force through the shift block to the release bearing. The bearing then presses against the diaphragm spring, releasing the clamping force on the clutch disc and disconnecting the engine from the transmission.

The shift block is manufactured from high-strength steel with precision-machined and heat-treated guide surfaces, ensuring excellent wear resistance and dimensional stability under heavy-duty operating conditions. The 10PE1 is a 15.7L inline-six turbo-diesel engine, and the 6WF1 is a 14.3L inline-six diesel engine, both widely used in ISUZU GIGA series heavy trucks.

Replace the clutch shift block when any of these symptoms appear:

• Difficulty engaging gears — worn shift block prevents the release bearing from sliding smoothly, resulting in incomplete clutch disengagement.
• Abnormal clutch pedal travel — deformed or worn shift block causes insufficient or excessive release travel.
• Release bearing noise — worn guide surface causes bearing misalignment, producing metallic grinding or squealing noise.
• Visible cracks or breakage on the shift block — structural failure prevents clutch disengagement entirely.
• Abnormal wear at the fork-to-block contact surface — surface wear reduces release force transmission efficiency.
• Clutch slipping or incomplete disengagement — worn shift block causes unstable release travel, preventing complete clutch engagement or disengagement.

1. Preparation: Disconnect the battery negative terminal. Raise the vehicle on a hoist. Remove the transmission from the engine.
2. Removal: Remove the clutch release bearing and shift block from the transmission front cover. Inspect the shift block guide surface for wear.
3. Inspection: Inspect the shift block for cracks, deformation, or guide surface wear. Inspect the release bearing for noise or binding. Inspect the release fork and fork ball stud for wear.
4. Installation: Apply high-temperature grease to the shift block guide surface. Install the shift block onto the release fork, ensuring proper seating.
5. Transmission Installation: Carefully install the transmission onto the engine, ensuring the input shaft splines engage the clutch disc hub.
6. Final Check: Verify the clutch pedal free play is within specification. Check for smooth clutch engagement and disengagement.
7. Road Test: Perform a road test to verify smooth gear shifting and absence of abnormal noise.

• Every 10,000 km: Check clutch pedal free play. Check for smooth gear shifting.
• Every 40,000–50,000 km: Inspect clutch engagement and disengagement. Check for abnormal noise.
• At clutch replacement: Always inspect the shift block, release bearing, and release fork for wear and replace as necessary.
• When gear shifting difficulty is detected: Inspect the clutch release system immediately, including the shift block and release bearing.

• 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, concrete mixer truck service stations.
• Supply Capacity: Stable batch supply with batch-level quality reports available.
• MOQ: Small quantities accepted (quantity discounts available).