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August 2011 - Haas Automation, Inc.

August 2011 - Haas Automation, Inc.

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HRT/TRT 110 Brake Booster Installation<br />

The brake booster is shipped empty. It must be filled with oil and the air purged<br />

from the system before operating.<br />

The brake booster(s) are installed on the back of the rear cabinet door as shown.<br />

Mount the brake booster(s) by opening the rear cabinet door, clipping them to the<br />

top of the door, then shutting the rear cabinet door.<br />

Set-up<br />

Fill the reservoir by removing the plug (square bolt) and adding Mobil DTE 25. The<br />

oil should be added until it is 1/4” to 1/2” below the reservoir cap.<br />

Turn the pressure regulator down (turn adjusting knob counter clock-wise) so no<br />

air pressure enters the system. Install an air supply to the input side of the regulator.<br />

Loosen hex-head bolt on top of HRT/TRT unit. Slowly turn pressure up on the<br />

regulator until the gauge shows 5 psi. Hydraulic fluid flows through the system and<br />

exits through the loose bolt on the HRT/TRT body. Tighten the hex-head bolt once<br />

a steady flow of oil flows by the bolt.<br />

Refill the oil reservoir, it should be 1/4”<br />

to 1/2” below the reservoir cap.<br />

Pressure Adjustment<br />

Set the air pressure for the HRT/TRT<br />

brake booster between 35 and 40psi.<br />

Turning the knob clockwise increases<br />

the pressure, turning it counter-clock<br />

wise decreases the pressure. It may<br />

be necessary to pull up on the knob,<br />

before adjusting, to unlock it. Press<br />

the adjusting knob down once the<br />

pressure is set to lock the adjusting<br />

knob. Warning: Setting a pressure<br />

above the recommendation may damage<br />

the brake.<br />

Plug<br />

Reservoir<br />

Pressure<br />

Regulator<br />

Shop Air<br />

Topof Rear<br />

Cabinet<br />

Door<br />

Oil Level<br />

Check the brake booster oil level before using. The oil level should be 1/4” to 1/2”<br />

below the reservoir cap. If necessary, add oil by removing the plug (square bolt), at<br />

the top of the reservoir and filling with Mobil DTE25.<br />

96-0315 Rev M<br />

<strong>August</strong> <strong>2011</strong><br />

7

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