SL 24 Heavy Duty/Stacker Trailer Jack
$1,175.00
SL 24 heavy duty stacker trailer jack
Heavy duty straight leg trailer jack with a vertically mounted pump, built for stacker and large race car trailers, where the nose weight and the height of the lift are both beyond what a standard trailer jack handles. It bolts to the center tube of a triple tube tongue, and it can be installed behind the front wall in a cabinet with a simple hole cut in the floor, or mounted in front of the wall. The pump has to be mounted inside.
Specifications
| Lifting capacity | 17,000 lbs |
|---|---|
| Stroke | 24 inch stroke cylinder |
| Cylinder | Heavy duty 3 inch cylinder with a 2 inch shaft |
| Foot pad | Large 12 inch foot pad |
| Pump | Commercial single function pump with manual override screw drive |
| Control | Weatherproof single switchgear control with key |
Manual override: screw drive
If the system loses power, the pump can be driven with an electric drill through the manual override output shaft on the motor, under the plastic cap or foil seal. The drill has to reach at least 2000 rpm or the pump will not develop enough pressure to move the jack, and the hex size and drill direction depend on the pump fitted to your unit, so call EQ Systems at 800-846-9659 before running the override. Take care that the drill does not contact wires or hoses.
Why the heavy cylinder matters
The heavy duty 3 inch cylinder runs a 2 inch shaft, and the large 12 inch foot pad spreads the load on soft ground, which matters when a stacker is parked on gravel or grass with the full nose weight on one jack.
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, with replacement feet 7821 or 70299 and cylinders 3144EQ, 3184EQ or 3144AEQ. Measure the body length, plate position and rod diameter before ordering any service part.
Standard and optional equipment
- Commercial single function pump with manual override screw drive
- Weatherproof single switchgear control with key, which also prevents unauthorized use of the system
- Wire harnesses have a PVC high temperature nylon braid to hold up in the toughest environments
Battery requirement
EQ Systems recommends load testing the battery: it should deliver a minimum of 150 amperes at a minimum of 10.5 VDC for at least 30 seconds. Keep the terminals tight and free of corrosion, and keep the battery charged and maintained to the battery manufacturer's requirements. If the trailer sits between trips, Stay Charge parts 8400 and 8427 charge the trailer battery from the tow vehicle.
Fluid and maintenance
An SL 24 stacker jack runs on Dexron III ATF, filled to about one inch below the top of the reservoir with the jacks fully retracted. Remember the level rises as the jacks retract. The reservoir must run with its vented breather cap fitted, not the flush shipping plug, or the jack will operate erratically. EQ Systems recommends owners inspect the system every 12 months, checking that all connections are tight and free from corrosion, particularly the ground to the pump stud and the positive cable to the motor solenoid.