TM 5-4220-233-14
(1) Place an empty container below the surge actuator assembly (1) to capture the fluid that will drain when
brake hose is disconnected from actuator.
(2) Disconnect brake hose assembly (2) from backside of surge actuator assembly (1) and allow fluid to drain.
(3) Remove four bolts (3), eight washers (4), four nuts (5) securing surge actuator assembly (1) to trailer
drawbar (6).
(4) Remove surge actuator assembly (1) from trailer drawbar (6).
(5) Clean and inspect mounting hardware and mating surface on drawbar as prescribed in paragraphs 4-15 and
4-16. Replace hardware, as necessary.
b.
Installation.
(1) Position new surge actuator assembly (1) onto trailer drawbar (6) and align mounting holes.
(2) Install four bolts (3), eight washers (4), and four nuts (5) to secure surge actuator assembly (1) to trailer
drawbar(6).
(3) Connect hose assembly (2) to surge actuator assembly (1).
(4) Bleed and service brake system as prescribed In paragraph 4-47.
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