47550-36210 4755036210 Rear Right Forward Brake Wheel Cylinder For TOYOTA Coaster HZB50 RZB40 Dyna 200 BU102 Toyoace 1HZ 3RZ-FE 1993-2003 — 1-1/8" Bore, Cast Iron, With Bleeder

The Brake Wheel Cylinder with OEM numbers 47550-36210 / 4755036210 is a verified direct-fit replacement for TOYOTA Coaster buses and Dyna 200 / Toyoace light trucks. It is a critical hydraulic component of the rear drum brake system, converting hydraulic pressure from the master cylinder into mechanical force that pushes the brake shoes against the drum to slow or stop the vehicle.

This unit is specifically the rear right forward (RH, Front or Upper) position cylinder, designed for Coaster HZB50 (1993–1999) and related HZB / RZB / TRB / XZB / BZB / BB series chassis, as well as Dyna 200 BU102 / BU112 / BU132 / BU140 / BU141 and Toyoace G25 applications from the mid-1990s through the early 2000s. It features a cast iron body with a 28.57 mm (1-1/8 inch) bore and is supplied with a bleeder screw in standard aftermarket configuration.

• ✓Bore Diameter Verified: 28.57 mm (1-1/8 in) — confirmed by Yamasida ("1-1/8"") and an independent Chinese supplier listing ("缸径: 28.57mm").
• ✓Position Verified: Rear Right Forward (RH, Front or Upper) — confirmed by Brettstruck ("RH RIGHT HAND FWD FORWARD") and Toyota EPC data ("FOR RH, FRONT OR UPPER").
• ✓Material Verified: Cast Iron — confirmed by Chinese supplier listing ("材质: 铁").
• ✓Vehicle Coverage Verified: Confirmed for Coaster HZB50 (1993–1999), Dyna 200 BU102 / BU112 / BU132 / BU140 / BU141 (1995–2002), Toyoace G25, and broader Coaster TRB5# / XZB5# / RZB4# / HZB5# / BZB5# / BB4# chassis families.
• ✓Engine Coverage Verified: 1HZ (4.2L diesel), 3RZ-FE (2.7L petrol), 15B-FTE (4.1L diesel), 14B, and additional engine variants referenced for the Coaster / Dyna platform.
• ✓OEM Cross-Reference Verified: Replaces 47550-36210, 4755036210. Aftermarket cross-references include AISIN WCT-058, Blue Print ADT34468, Seiken SW-T1471, BGF BWN736 / BWN835, WCT-060, J3242054 / J3242074, 11X0046, and Yamasida 4755036210.
• ✓Paired Counterparts: The same brake system uses related cylinders for other positions — 47560-36210 (LH forward), 47570-36210 (RH rearward), 47580-36210 (LH rearward) — as referenced in a supplier listing for the Coaster / Dyna platform.

• Brake fluid leak at the wheel: Visible wetness around the backing plate or inside the brake drum — indicates seal failure and imminent braking loss.
• Spongy or long-travel brake pedal: Pedal sinks further than normal and feels soft — air enters the system through a failed seal, reducing hydraulic pressure.
• Uneven braking or vehicle pull: Vehicle pulls to one side during braking — one wheel cylinder is not applying equal force, causing imbalance.
• Brake fade or overheating drums: Extended stopping distances and hot brake drums — a failing cylinder may cause dragging or insufficient shoe application.
• Brake warning light illumination: Dashboard brake warning activates, often accompanied by abnormal brake behavior — inspect the wheel cylinder immediately.

Brettstruck explicitly lists 47550-36210 for Coaster HZB50 1993–7/1999, 1HZ 6-cyl 4.2L, with RH Right Hand Fwd Forward position. Toyota EPC data confirms the same part number for Dyna / Toyoace BU102H, BU132, 05.1995–05.1999, as "CYLINDER ASSY, REAR WHEEL BRAKE (FOR RH, FRONT OR UPPER)". BGF and additional catalogs confirm coverage across Coaster TRB5# / XZB5# / RZB4# / HZB5# / BZB5# / BB4# and Dyna BU102 / BU112 / BU140 / BU141.

1. 1Confirm position first: Verify that the replacement is the rear right forward (RH, Front or Upper) cylinder, not the rearward counterpart. Compare the OEM number and physical orientation to the original unit.
2. 2Safety first: Park on level ground, engage the parking brake, and chock the front wheels. Wear safety glasses and gloves.
3. 3Remove wheel and drum: Loosen lug nuts, raise the vehicle, remove the wheel, and extract the brake drum. Inspect the drum and shoes for wear.
4. 4Disconnect hydraulic line: Place a drain pan underneath, disconnect the brake line from the wheel cylinder, and plug the line immediately to prevent contamination.
5. 5Remove old cylinder: Unbolt the wheel cylinder from the backing plate. Note the orientation of the push rods and the forward / rearward position for correct reassembly.
6. 6Clean mounting surface: Remove rust, dirt, and debris from the backing plate mounting area. Inspect the backing plate for damage or deformation.
7. 7Install new cylinder: Position the new wheel cylinder (47550-36210) onto the backing plate and tighten the mounting bolts to specification.
8. 8Reconnect brake line: Connect the hydraulic line. Tighten to thread specification without over-torquing.
9. 9Install shoes and drum: Reinstall the brake shoes, adjuster components, and drum. Set shoe-to-drum clearance to the workshop manual specification.
10. 10Bleed the brake system: Fill the master cylinder reservoir with DOT 3 or DOT 4 brake fluid. Bleed until clear, bubble-free fluid flows from the bleeder screw. Confirm bleeder screw presence and function before starting the bleed procedure.
11. 11Test brakes: Pump the pedal to seat the shoes, check for leaks, and road-test at low speed before returning the vehicle to service.

• Inspect wheel cylinders every 40,000–50,000 km or during any brake service.
• Replace wheel cylinders in axle pairs or position-matched pairs — mixing old and new cylinders on the same axle can cause uneven braking.
• Flush brake fluid every 2 years or according to the manufacturer interval — contaminated fluid accelerates seal degradation.
• Inspect the backing plate for brake fluid wetness at every oil change — early detection prevents catastrophic seal failure.

• Standard packing: Individual box with protective packaging; wooden pallet available for bulk export orders.
• Package contents: 1 × Brake Wheel Cylinder (installation hardware not included; bleeder screw inclusion varies — confirm at inquiry).
• Set options: Single cylinder / front-or-upper pair (RH + LH forward) or full rear set (4 positions) — specify at inquiry.
• Suitable for: TOYOTA Coaster / Dyna / Toyoace brake system repair shops, bus fleet maintenance departments, spare parts distributors, and export wholesalers serving Southeast Asia, the Middle East, Africa, and Latin America.
• Related parts available: Paired counterparts 47560-36210 (LH forward), 47570-36210 (RH rearward), 47580-36210 (LH rearward); brake shoes, brake drums, wheel cylinder repair kits, and brake fluid (DOT 3 / DOT 4) for the Coaster / Dyna platform.