Rear Brake Wheel Cylinder 8-97349690-1 8973496901 For ISUZU NLR85 NMR85 4JJ1 Truck

Features & Advantages 

• OE Quality: Manufactured to strict ISUZU dimensional and material specifications for perfect fit and function.

• Precision-Honed Bore: Smooth, accurate 25.40mm bore ensures consistent piston movement and reliable brake actuation.

• Cast Iron Construction: High-strength cast iron housing withstands high hydraulic pressures and continuous operation.

• Durable Seals: High-quality brake fluid-resistant seals prevent leaks and ensure long service life.

• Corrosion-Resistant Housing: Treated cast iron housing resists corrosion from moisture and road salt.

• Restores Braking Performance: Eliminates spongy pedal feel, pulling, and reduced stopping power caused by faulty cylinders.

• Prevents Brake Fluid Leaks: Precision seals and machining prevent fluid loss that compromises braking safety.

• Direct Replacement: Matches OE cylinder dimensions, mounting points, and brake line connections.

• Even Brake Application: Replacing in pairs ensures balanced, pull-free braking.

• Essential for Brake Safety: Critical component that directly affects vehicle stopping distance and safety. 

  

Vehicle & Engine Compatibility

This rear brake wheel cylinder is specifically designed for ISUZU light-duty trucks and commercial vehicles. Common applications include:

• ISUZU ELF350 NLR, NMR, NNR (2007 onwards)

• ISUZU NLR85 (Light-Duty Trucks)

• ISUZU NMR85 (Light-Duty Trucks)

• ISUZU NNR (Light-Duty Trucks)

• ISUZU NPR77 (as applicable)

Engine Specifications:

• ISUZU 4JJ1 — 3.0L Inline-4 Turbo Diesel

• Year Range: 2007 onwards

• Application: Light-duty trucks and commercial vehicles

Installation Notes

Professional mechanic installation is essential for safety:

1. Ensure vehicle is safely raised – Use appropriate jack stands to support the vehicle; remove the rear wheel.

2. Remove the brake drum – Remove the brake drum to access the wheel cylinder and brake shoes.

3. Remove the brake shoes – Carefully remove the brake shoe assembly; note the spring and hardware positions.

4. Disconnect the brake line – Disconnect the brake fluid line from the wheel cylinder; cap the line to prevent fluid loss.

5. Remove the old wheel cylinder – Unbolt the wheel cylinder from the backing plate.

6. Inspect the backing plate – Check the backing plate for damage, wear, or corrosion.

7. Install the new wheel cylinder – Position the new cylinder on the backing plate; install mounting bolts.

8. Torque mounting bolts – Tighten bolts to manufacturer torque specifications.

9. Reconnect the brake line – Reconnect the brake line to the new cylinder; torque the fitting to specification.

10. Reinstall brake shoes – Reinstall the brake shoe assembly with new springs and hardware.

11. Adjust brake shoes – Adjust the brake shoe-to-drum clearance to manufacturer specification.

12. Reinstall the brake drum – Install the brake drum; ensure proper fit and adjustment.

13. Bleed the brake system – Bleed the brake system to remove air; start with the wheel furthest from the master cylinder.

14. Check for leaks – Inspect all connections for fluid leaks; ensure the cylinder is not leaking.

15. Test brake pedal – Pump the brake pedal; ensure firm pedal feel and proper pedal height.

16. Road test – Test the brakes at low speed in a safe area; verify proper stopping performance.

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