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HYDRAULIC BRAKE BOOSTER (HBB) TSB Revision BASIC BRAKE SYSTEM 35A-139 3. Using special tool MB991926, remove the accumulator. the HBB. 5. Install a new o-ring to a new accumulator. the HBB. The tightening torque of the accumulator is 54 ± 5 N ⋅m (40 ± 4 ft-lb). 7. Fill the HBB brake system with brake fluid and bleed the HBB brake system (Refer to 8. Carry out the function and operation check of power supply system (Refer to ). 9. Erase HBB diagnostic trouble code (Refer to 10.Dispose of the removed accumulator (Refer to ACCUMULATOR DISPOSAL M1351015900011 WARNING Do not disassemble, throw into fire, cut, weld, drop, 1. Fix the accumulator on a vice as illustrated. 2. Punch in the area shown in the illustration to fix the drilling position. 3. Set a drill [diameter φ 4 mm (φ 0.16 in)] on the drill motor. AC204060 AB MB991926 ACCUMULATOR AC204540 AC204541AB Φ50 mm Φ2.0 in |