EQ Systems SL 24 Heavy Duty Stacker Trailer Jack | 17,000 lbs | 24" Stroke | Race Car Trailer

Lift and level your stacker or large race-car trailer with the EQ Systems SL 24 Heavy Duty/Stacker Trailer Jack — a complete heavy-duty straight-leg trailer jack system with a vertically mounted pump, built for stacker and large motorsports trailers where nose weight and lift height exceed what standard trailer jacks handle. Bolts to the center tube of a triple tube tongue; pump mounts inside the cabinet. Available at The RV Surplus.

Fitment critical: Verify compatibility before ordering. Call EQ Systems at 800-846-9659.

⭐ Built For Stacker/Race Car Trailers

• 17,000 lbs lifting capacity
• 24" stroke cylinder
• Handles nose weight and lift height beyond standard trailer jack range
• Vertically mounted pump — installs behind the front wall in a cabinet with a hole cut in the floor, or in front of the wall

⭐ Heavy-Duty Cylinder + Large Foot Pad

• Heavy-duty 3" cylinder with 2" shaft
• Large 12" foot pad — spreads load on soft ground (gravel, grass) when a stacker is parked with full nose weight on one jack

⭐ Weatherproof Keyed Control

• Weatherproof single switchgear control with key
• Prevents unauthorized use

⭐ Screw-Drive Manual Override

• If power fails, drive the pump with a reversible drill through the override shaft (top of motor, under plastic cap or foil seal)
• Drill must reach at least 2000 RPM for adequate pressure
• Hex size and drill direction depend on your pump build — call EQ Systems at 800-846-9659 before running the override
• Take care not to contact wires or hoses with the drill

What's Included (8662)

• SL 24 heavy-duty jack (17,000 lbs)
• Commercial single-function pump with screw-drive manual override
• Weatherproof keyed switchgear
• Wire harnesses in PVC high-temperature nylon braid

Battery Requirements

Load-test the battery before installing. EQ Systems requires a minimum of 150 amperes at 10.5 VDC for at least 30 seconds. Keep terminals tight and free of corrosion.

Fluid and Maintenance

Runs on Dexron III ATF, filled to about 1" below top of reservoir with jack fully retracted (level rises as jack retracts). Reservoir must run with its vented breather cap fitted, not the flush shipping plug, or the jack will operate erratically. Inspect every 12 months.

Service Parts

SL 24 jacks are listed in the Jack Replacement Chart under parts 7848, 7923, and 70217 depending on plate position and rod diameter. Measure body length, plate position and rod diameter before ordering any service part.

• SL 24 (7848) — standalone leg, 2" rod
• SL 24 A-17K (70217) — standalone leg, 1½" rod
• Replacement foot pad: 7821 or part 70299
• Replacement cylinders: 3144EQ, 3184EQ, or 3144AEQ

Documents

• EQ Systems Lifting Systems for Any Size Trailer (PDF)
• Jack Replacement Cylinder and Foot Identification Chart (PDF)
• EQ Systems Hydraulic Jack Options, Commercial Range (PDF)
• Required Maintenance Items for EQ Hydraulic Jacks & Slide Systems (PDF)

Related Trailer Jack Systems

• AM 1/24 Screw Drive — 4"×4" AM series single leg (12,000 lbs) for gooseneck trailers
• AM 2/24 Screw Drive — dual-leg AM system (24,000 lbs)

Recommended Add-Ons

• Stay Charge with Jumper Cables (8427) — charges trailer battery from tow vehicle
• Stay Charge (8400) — base battery maintainer

1-Year Warranty

Backed by EQ Systems' 1-year manufacturer warranty. Check your operation manual for full terms.

Specifications

• Brand: EQ Systems
• Model: SL 24 Heavy Duty/Stacker Trailer Jack
• SKU: 8662
• Application: Stacker, race car, and large motorsports trailers
• Lifting Capacity: 17,000 lbs
• Stroke: 24"
• Cylinder: Heavy-duty 3" bore, 2" shaft
• Foot Pad: 12" (large)
• Pump: Commercial single-function, vertically mounted, with screw-drive manual override
• Control: Weatherproof keyed single switchgear
• Fluid: Dexron III ATF
• Battery Requirement: 150A minimum at 10.5V for 30 seconds
• Wiring: PVC high-temp nylon braid
• Mounting: Bolts to center tube of triple tube tongue
• Warranty: 1-year manufacturer warranty