ACME Screw Electric Jack Instructions
Revision 2013-09-10Made in China for DTS Manufacturing, Wilsonville, OR 97070
© DTS Manufacturing, 2013. All rights reserved.
3,500, 3,000, & 2,500 Lb
1
» Keep hands, feet and body clear of the jack and trailer to avoid the risk of injury or
death!
Installation
1. Before installation, compare the lift capacity of the Suspension Pro jack with your trailer to ensure
safe operation of the jack.
2. Park the trailer on a level surface and block the wheels.
3. Support the trailer tongue by the frame with jack stands.
4. If replacing an old jack, disconnect the power line and remove the old jack from the coupler,
saving the washers and bolts.Insert the Suspension Pro jack into the jack hole and align the bolt
holes so the motor housing is facing forward as shown in Figure
5. Secure the jack with three (3) grade 5, 3/8”-16 UNC bolts and washers. Place the star washers
between the flat washers and mounting plate as shown in Figure 1. The star washers are intended
to penetrate through the paint on the mounting plate to ensure direct metal to metal contact. Bolts
should be tightened to 15–20 ft•lb.
» The salvaged bolts from the old jack are acceptable for reuse if they are grade 5 and
in good condition.
6. Install the manual reset circuit breaker by either crimping or soldering the wire from the jack to the
terminal marked “Load” on the breaker. Connect the “Line” terminal of the breaker to the positive
terminal of the battery. The breaker should be located as close to the battery as possible and stored
inside the battery box. Since the jack is internally grounded, a ground wire is not necessary.
» When using an extension wire, DO NOT use a wire smaller than 4mm gauge.
Operation
1. Park your trailer on a level surface and block all dolly and trailer wheels.
» For nighttime hookups, flip the light switch ON to illuminate your work area.
2. Before operating the jack, attach the foot with the 3/8”safety lock pin provided.
» Do not stack blocks under the jack’s foot to increase the height. Stacked blocks may
become unstable and fall.
3. Extend the jack by pushing the operating switch UP.
» To prevent the motor from overheating due to heavy use, the internal circuit
breaker may open, switching off the motor. Release the operating switch and wait
approximately 15 seconds for the breaker to reset before resuming operation.
4. Retract the jack by pushing the operating switch DOWN.
» The jack will stop automatically at the end of the extension or retraction stroke. If you
attempt to extend or retract the jack and it does not respond, it may be at the end of
the stroke. If the jack fails to respond, try operating it in the opposite direction. If it
will not operate in either direction then see the troubleshooting guide.
5. Before driving, remove the foot or position it in the highest position and completely retract the jack.
Manual Operation (for Back-Up & Emergency Use)
1. Disconnect the jack from the power source. (Failure to disconnect the power could result in serious
injury.)
2. Remove the rubber access cover on the top of the jack.
3. Insert the manual crank handle into the access hole on the top of the jack, engaging the drive
screw.
4. Rotate the manual crank handle counter-clockwise to extend the jack, and clockwise to retract it.
5. When the jack is at the desired height, remove the crank. Replace the rubber cover.
Manual Crank
Operating Switch
Light Switch
Circuit Breaker
“Line”
Terminal
“Load”
Terminal
“Line” to the
positive terminal
of the battery
“Load” to
the jack.
Figure 1
Tools/Components Required
• Three (3) Grade 5, 1–1½” Long, 3/8”-16 UNC Bolts
• Three (3) 3/8” Flat Washers
• Three (3) 3/8” Star Washers (included)
• 9/16” Wrench
• Torque Wrench
• Wire Cutters
• Wire Strippers
• Crimpers OR Soldering Iron
Specifications
• Models Applicable ......................................................... SP3500, SP3000, & SP2500
• Maximum Lift Capacity ......................3,500 lb / 3,000 lb / 2,500 lb (continuous use)
• Retracted Height ..........................................................................................31-3/8”
• Vertical Travel ..................................................................................................... 18”
• Power Requirements ................................................................................. 12 Volt DC
• Outer Tube Diameter ...................................... SP3500 & SP2500 – 2¼”; SP3000 – 2”
• Power Cord Length .........................................................................6 ft of 4mm Wire
• Foot Pad Diameter .............................................................................................5½”
• LED Work Lights .............................................On 3 sides for Easy Nighttime Hookups
• Shipping Weight ................... SP3500 – 28½ lb; SP3000 – 27½ lb; SP2500 – 26½ lb
Read and follow all instructions. If you do not understand the proper use of the product, ask your dealer/in-
staller for assistance. Never remove any warning decals from the product.
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