ORO's ACU Bracket Install

Off Road ACU Bracket Install

Oil Separator / Pressure Regulator bracket and Air Manifold Setup

Additional Parts:

Tools Needed:
Drill
Drill Bit Set
Scribe
5/32" Allen Wrench
1/2" Socket
3/8” Ratchet
11/16" Combo wrench
5/8" Combo wrench
3/8" Combo wrench
1 1/8" Combo wrench or 12" adjustable wrench.
Extension

Regulator / Filter bracket installation

1. Remove the nut holding the brake master cylinder to the vacuum booster using a 1/2" Socket and extension.

2. Slide the end of the Regulator / Filter bracket over the master cylinder stud and loosely reinstall the nut to hold it in position.

3. Position the bracket and mark the location of the two additional bolt holes with a scribe. You will need to drill through the ABS plastic tray. Remove the bracket.

4. Lightly center punch drill locations. Drill a pilot hole with a sharp drill bit. I worked my way out to a 1/4" drill bit. The ABS plastic tray is thin so go slowly with the drill bit, you don’t want to heat up and melt the plastic.

5. Reinstall the Regulator / Filter bracket with the provided 5/16” bolts and the nut for the brake master cylinder.

6. Make sure that the bracket does not catch the electrical connector of the alternator. It should be on the backside of the bracket.

Bracket installed.

7. If not already installed, install the brackets for the regulator and oil separator. Use a 5/32” allen wrench and 3/8” combo wrench to mount the brackets to the regulator / filter bracket.

8. You will need to test fit the oil separator to make certain that it fits between the brake lines.

Air Manifold:

1. Install the Air manifold on the bracket with the two 5/32" allen head thumb screws.

I had a few parts laying around from a Kilby kit for the TJ's. So I figured a little comparison was in order here.

Kilby's Manifold (top) vs Off Road Only's Manifold
The Kilby's manifold is larger and has a few extra ports that the ORO manifold does not have. The Kilby manifold takes up a lot of space.

The Kilby (left) vs the Off Road Only Pressure Switch.
The Kilby switch is massive compared to the ORO switch. It also activates at a higher pressure.

The Kilby (left) vs the Off Road Only Pressure relief.
The Kilby's appears to be the same cheap $6 one you can get at Lowe's. I have consistently replaced these on my home and work air compressor for the simple reason that they leak after a time. The Kilby's is set at a higher pressure than the ORO relief.

N-m

Ft. Lbs.

In. Lbs.

This page last updated: 16-Apr-2008

Content and Design © 2002-present WanderingTrail, Ronald Seegert
Common Sense and Safety should always be observed when working on your vehicle or doing modifications. Jackstands, wheel blocks, disconnecting the battery are a few of the basic safety precautions that should be used and may not be mentioned in the write ups on this site. You are responsible for your own installation, these write ups are a helpful guideline and should not be taken as an official installation instruction. My write up may be different from the kits currently out there, so alwasy double check the manufacturers installation instructions when installing anything. I try to keep the site up to date with changes that have occured as I discover them, but may not have the latest unless someone lets me know. If you feel that an install is above your capabilities after reading my write ups, I recommend getting together with a club and getting some help. Only a few times have I needed to employe some actual help from a shop to get something done. Usually welding or A/C work. While I have spent many years working on mechanical systems, I am not an expert, nor do I pretend to be one. I hope these write ups have been useful to you.
All trademarked names & logos are property of their respective owners
This site is in no way associated with FCA.
Jeep is a registered trademark of FCA.

Installation Instructions
Top	ACU Bracket	Air Compressor Bracket
Air Tank and Lines	Harness and Sensors	Front Suspension
Rear Suspension	Modifications and Additions	Pictures