ALLIANCE AVENUE 32RLS - Stabilizer Jack Replacement

ALLIANCE AVENUE 32RLS – Stabilizer Jack Replacement

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Complete repair guide for the ALLIANCE AVENUE 32RLS – Stabilizer Jack Replacement.

Parts & Tools You’ll Need

Step 1: Diagnose Jack Failure and Prepare Workspace

Before beginning replacement, verify the stabilizer jack is actually faulty by testing the 4-way control panel—listen for motor engagement and check for any grinding sounds or complete lack of response. Locate all four jack mounting points on the underside of the Alliance Avenue 32RLS frame (two forward, two rear) and visually inspect for corrosion, cracks, or damage to the mounting brackets. Park the trailer on level ground, engage the parking brake, and place wheel chocks behind all four wheels. You’ll need to access the undercarriage safely, so set up jack stands rated for at least 5,000 lbs at each mounting point before proceeding with any work.

Step 2: Remove Old Stabilizer Jack Assembly

Disconnect the negative battery terminal to eliminate any electrical hazards during removal. Using a socket wrench, remove the four grade 8 mounting bolts (typically 1/2-inch) from the jack bracket assembly—these are torqued to 85-95 ft-lbs, so expect resistance. Carefully disconnect the wiring harness from the old jack motor by releasing the weatherproof connector clip and noting the wire positions (document with photos for reference). Lower the old jack assembly carefully onto a work surface, taking care not to damage nearby plumbing or electrical lines, and set it aside for disposal or return if applicable.

Step 3: Inspect and Clean Mounting Bracket Areas

Once the old jack is removed, visually inspect all four mounting bracket surfaces for corrosion, rust, or stripped threads. Use a wire brush to clean away any oxidation or debris from the bolt holes and mounting surface—this ensures proper contact and prevents electrical grounding issues. Check that the mounting bracket is straight and not bent; if you notice warping, the bracket may need professional straightening or replacement. Apply a thin coat of dielectric grease to all bolt holes to prevent future corrosion before installing the new jack.

Step 4: Install New Lippert Stabilizer Jack Unit

Position the new Lippert 285346 Electric Stabilizer Jack into the mounting bracket, ensuring the jack screw is fully retracted to its highest position (use the control switch if needed). Align all four bolt holes carefully, then insert the grade 8 mounting bolts with washers and hand-tighten them first to check alignment. Using a torque wrench in a star pattern (forward-left, rear-right, forward-right, rear-left), tighten each bolt to 88 ft-lbs to ensure even pressure distribution and prevent bracket stress. Verify that the jack moves freely through its full extension and retraction range by gently moving the screw by hand.

Step 5: Connect Wiring Harness and Control System

Route the Electric Jack Wiring Harness from the mounting point toward the trailer’s main electrical panel, securing it with P-clips every 18 inches to prevent chafing or damage. Connect the harness to the 4-way control panel switch—the standard configuration uses red (12V positive), black (ground), and two control wires for up/down functionality. Reconnect the negative battery terminal and test the control switch to confirm the jack motor engages and the jack extends/retracts smoothly before securing the final connections. Install the Jack Position Sensor onto the jack body, aligning it with the sensor bracket marked on the mounting frame, and connect its dedicated 3-wire connector to the trailer’s electrical system.

Step 6: Lubricate Jack Screw and Apply Pads

Apply Jack Screw Lubricant Grease to the entire length of the jack screw using a grease gun, working it thoroughly into the threads and ball-screw assembly—this prevents rust and ensures smooth operation. Cycle the jack up and down three complete times to distribute the lubricant evenly throughout the mechanism. Install the Stabilizer Pad Stack on each jack pad—these rubber/plastic stacks absorb vibration and prevent concrete deterioration—ensuring they’re seated flush against the jack foot. Place the Chock Kit blocks in front of and behind each wheel for additional stability, spacing them no more than 1 inch from the tire.

Step 7: Test Full Stabilization System and Verify Function

With the trailer still on jack stands, activate the 4-way control panel and extend all four jacks to their full extension, listening for consistent motor speed and checking that each jack reaches its limit-switch cutoff without grinding. Remove the jack stands carefully only after verifying the jacks are supporting full trailer weight—you should feel minimal rocking when pushing on the trailer frame. Cycle the jacks up and down two more complete times, pausing 10 seconds at full extension each time to confirm the position sensor is functioning and no error indicators appear on the control panel. Finally, perform a visual inspection underneath the trailer to confirm all wiring is secure, no bolts have loosened, and there are no fluid leaks from hydraulic lines—the stabilizer system is now operational and ready for use.