Multiquip 507278 Hydraulic Fluid Filler Cap - OEM Replacement Part

The hydraulic fluid filler cap seals the hydraulic reservoir filler port on Multiquip ride-on rollers, preventing contamination and maintaining proper system pressure. This cap must be removed when adding ISO 46 anti-wear hydraulic fluid to the system during routine maintenance or after hydraulic repairs. The hydraulic system on these rollers powers the hydrostatic drive for both drums, steering cylinders, and vibration components, making proper fluid level and cleanliness critical for reliable operation.

The AR13D hydraulic system features a double-filtration design with a screen-type filter in the reservoir filler neck. During hydraulic fluid level checks, operators view the sight glass to ensure the level remains between the top and bottom marks—proper sealing from this cap prevents moisture ingress and debris contamination that can damage hydraulic motors and the manifold block. Regular hydraulic maintenance includes checking fluid levels and running the engine for 5 minutes to circulate fluid through the system before pressure testing.

Compatible with the following Multiquip roller models:

• AR13D
• AR13H
• AR13HA
• AR13HA/AR13HAR

Genuine Multiquip OEM part, sold by an authorized dealer.