Is directed to the steering valve | Multiquip AR13HAR guide

AR13HA-R RIDE-ON ROLLER — MAINTENANCE

CAUTION - Freewheel EngagementValve

The freewheel engagement valve (towing) is only for emergency use. DO NOT move roller over 2 MPH or long

The vibration circuit is controlled by an electric control valve located on the valve block (manifold).This valve is controlled by the “ON/OFF” pushbutton switch mounted on top of the travel lever.

distances as hydraulic system component failure could result.

ALLEN

WRENCH

OPEN

High-pressure oil is supplied by the pump to the valve block (port P) and is directed to the electric control valve. When the pushbutton switch is in the “OFF” position, this valve is open allowing oil to go to the steering valve, without driving the vibration motor.

PUSH

START

CLOSED

(ON)

CLOSED

TOW

FREEWHEEL

ENGAGEMENT

VALVE

When the switch is in the “ON” position, the	PUSH
When the switch is in the “ON” position, the	TO
electric control valve closes and oil is directed	START
electric control valve closes and oil is directed
out of port 1 to the vibration motor. Return oil
out of port 1 to the vibration motor. Return oil
from the motor returns to the valve block via port	(ON)
from the motor returns to the valve block via port
2 and is directed to the steering valve.
	CLOSED

Figure 27. Freewheel Engagement Valve

Drum Drive

The drum drive circuit is a parallel, closed loop system (Figures 38 and 39) consisting of a hydrostatic pump, two relief valves, a freewheel engagement valve, front and rear drum drive motors.

The hydrostatic pump is manually controlled by a cable connected to the forward/reverse shift lever located on the right side of the operator seat. When the shift lever is placed in forward, high-pressure oil is supplied by the hydrostatic pump to the valve block (port A). The valve block (manifold) directs this high- pressure oil to the front and rear drum drive motors. Return oil from the motors is returned to the valve block (port B) and is returned to the suction side of the hydrostatic pump.

When shifted into reverse, the high-pressure and suction ports on the hydrostatic pump are reversed. Oil flow is then in the opposite direction of forward (port B becomes high-pressure and port A becomes suction)

Vibration and Steering

The vibration and steering system is an open loop circuit operated by a gear type pump. Separate relief valves control each circuit.This system consist of the gear pump, relief valves, electric vibration control valve, vibration drive motor, steering valve, and steering cylinder.

Steering is controlled by a steering valve and cylinder (Figures 29 and 30).The steering wheel is direct coupled to the steering valve controling the oil flow to the cylinder. Oil supplied from the vibration circuit is directed to port 3 which connects to port P of the steering valve. When steering is not being used, oil passes out of portT of the valve block and returns to the hydraulic tank. When the steering wheel is operated, the steering valve closes and oil is directed to ports L or R to extend or retract the steering cylinder.

Rubber Scrapper Mat

Rubber scraper mats have been provided for the cleaning of the front and rear drums. Adjust the scrapers mats as close as possible to the drums, using the slotted holes (Figure 28) provided. Replace these rubber mats when they become badly worn.

Figure 28. Scraper Bar Adjustment

AR13HA-R RIDE-ON TANDEM DRUM ROLLER — OPERATION & PARTS MANUAL — REV. #9 (06/28/11) — PAGE 29

AR13HA, AR13HAR specifications

The Multiquip AR13HAR and AR13HA are advanced, rugged, and efficient walk-behind rollers designed for various construction and road maintenance applications. These compact rollers are specifically engineered to handle asphalt and soil compaction tasks, making them ideal for both professional contractors and do-it-yourself enthusiasts seeking high-quality performance in compact spaces.

One of the standout features of the Multiquip AR13HAR and AR13HA is their excellent maneuverability. With their tight turning radius, these rollers can easily navigate confined areas, allowing for effective compaction even in challenging sites. This makes them particularly useful for patching, trench work, and other localized applications.

The AR13HAR model is equipped with a reliable water-cooled engine that delivers robust power, ensuring consistent performance throughout the compaction process. The hydraulic system offers smooth operation, allowing operators to adjust the roller's speed and direction with ease. The self-propelled functionality further enhances user experience, catering to various operator preferences.

In terms of compaction capability, both models are fitted with high-frequency vibrating plates that facilitate superior compaction results. The AR13HAR and AR13HA can achieve impressive compaction depths, making them suitable for a wide range of material types. Users can expect consistent and uniform compaction across the working surface, which is essential for building durable pavements and bases.

Another important aspect is their durability. Multiquip has crafted the AR13HAR and AR13HA with robust materials, ensuring that they can withstand the rigors of construction sites. The rollers feature reinforced frames and sturdy drums designed to endure harsh conditions, contributing to a longer lifespan with less maintenance required.

Safety is also a priority in the design of these rollers. They come equipped with essential features like an emergency stop switch and operator protection measures to ensure a secure working environment. Additionally, the ergonomic controls are intuitively positioned, promoting operator comfort and reducing fatigue during extended use.

Overall, the Multiquip AR13HAR and AR13HA represent a perfect fusion of power, agility, and safety in compact roller technology. Their impressive features and robust design make them a reliable choice for professionals looking to enhance efficiency and productivity in their compaction projects. Whether it's a small repair task or a larger construction job, the Multiquip AR13 series can deliver results that meet and exceed expectations.