Air Booster Pump 5360133 SEM919 921 922 Grader parts

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Air Booster Pump (Air-over-Hydraulic Brake Booster) 5360133 – SEM 919 / 921 / 922 / 919F / 921F / 922F Motor Grader Parts

The air booster pump (also called an air-over-hydraulic booster) combines compressed air and hydraulic fluid to multiply brake pedal force, delivering high braking power to the grader‘s external disc brakes. When the booster fails, the brake pedal feels hard, stopping distance increases, and operator control is compromised.

Model	Series / Sub‑Type
SEM 918	Standard (non‑F)
SEM 919	Standard (non‑F)
SEM 919F	F‑series (Non‑road China IV)
SEM 920	Intermediate class
SEM 921	Standard (non‑F)
SEM 921F	F‑series (Non‑road China IV)
SEM 922	Standard (non‑F)
SEM 922F	F‑series (Non‑road China IV)
SEM 922AWD	All‑wheel drive variant

Part Number	Product Name	Compatible Model(s) / Notes
5360133	Air Booster Pump / Air-over-Hydraulic Brake Booster	SEM 919 / 919F / 921 / 921F / 922 / 922F motor graders – service brake system, external disc brakes
W084900000	Air Booster Pump (空气加力泵) – 16.3 kg assembly weight	SEM 919 / 921 / 922 motor graders – complete booster assembly, alternative OEM‑grade number
5386712	Dual Circuit Brake Valve	SEM 921 motor grader – brake system control valve, works in conjunction with 5360133 booster
920304012	Air Tank / Reservoir Assembly	SEM 919, 921, 922 – compressed air storage tank supplying the air booster pump
920304023	Pressure Switch (air system)	SEM 919, 921, 922 – monitors air pressure in brake system
4386704	Wheel Hub Bearing	SEM 921 – front wheel bearing (related brake system component)
5374848	Brake Caliper (external disc)	SEM 922, 922F – service brake caliper assembly

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Product Detail

Air Booster Pump (Air-over-Hydraulic Brake Booster) 5360133 – SEM 919 / 921 / 922 / 919F / 921F / 922F Motor Grader Parts

Model	Series / Sub‑Type
SEM 918	Standard (non‑F)
SEM 919	Standard (non‑F)
SEM 919F	F‑series (Non‑road China IV)
SEM 920	Intermediate class
SEM 921	Standard (non‑F)
SEM 921F	F‑series (Non‑road China IV)
SEM 922	Standard (non‑F)
SEM 922F	F‑series (Non‑road China IV)
SEM 922AWD	All‑wheel drive variant

Part Number	Product Name	Compatible Model(s) / Notes
5360133	Air Booster Pump / Air-over-Hydraulic Brake Booster	SEM 919 / 919F / 921 / 921F / 922 / 922F motor graders – service brake system, external disc brakes
W084900000	Air Booster Pump (空气加力泵) – 16.3 kg assembly weight	SEM 919 / 921 / 922 motor graders – complete booster assembly, alternative OEM‑grade number
5386712	Dual Circuit Brake Valve	SEM 921 motor grader – brake system control valve, works in conjunction with 5360133 booster
920304012	Air Tank / Reservoir Assembly	SEM 919, 921, 922 – compressed air storage tank supplying the air booster pump
920304023	Pressure Switch (air system)	SEM 919, 921, 922 – monitors air pressure in brake system
4386704	Wheel Hub Bearing	SEM 921 – front wheel bearing (related brake system component)
5374848	Brake Caliper (external disc)	SEM 922, 922F – service brake caliper assembly