This document provides original instructions. Please read all manual instructions carefully before operating. VEVOR reserves the right to provide a clear interpretation of this user manual. The appearance of the product is subject to the item received. VEVOR will not provide further notification for technology or software updates on its products.
Important Safeguards
⚠️ WARNING: Read and understand this entire manual before operating or servicing this product. Failure to follow these warnings and instructions can cause personal injury or damage to valuable property.
Assembly Precautions
- Assemble only according to these instructions. Improper assembly can create hazards.
- Wear ANSI-approved safety goggles and heavy-duty work gloves during assembly and use.
- Keep the assembly area clean and well-lit.
- Keep bystanders out of the area during assembly.
- Do not assemble when tired or when under the influence of alcohol, drugs or medication.
- Product capabilities apply to properly and completely assembled product only.
- For additional information regarding the parts listed in the following pages, please refer to the Assembly Diagram of this manual. Unwrap and separate all parts in a clean work area. Please keep small spare parts out of children's reach.
Save These Instructions
WARNING:
- DO NOT ATTEMPT TO USE THIS SCISSORS JACK TO LIFT EXCESSIVE WEIGHT OR MAKE TIRES OFF THE GROUND - VEHICLE FRAME AND DOOR JAMB DAMAGE MAY OCCUR.
- USE ONLY STOCK HANDLE SUPPLIED. DO NOT USE A CHEATER BAR ON HANDLE.
- DO NOT USE THIS SCISSORS JACK AS A TIRE CHANGING JACK.
- If the product is damaged, it must be replaced or repaired by the manufacturer, its service agent, or similarly qualified persons in order to avoid a hazard.
- The product is not a toy; children shall not play with the product.
- The product cannot be used by persons with reduced physical, sensory, or mental capabilities or lack of experience using the product.
- NEVER run the engine when the SCISSORS JACK is attached to the vehicle.
Specifications
Model | ST-120L | ST-120LA | ST-120CA |
---|---|---|---|
Material | Steel | Steel | Steel |
Max Load | 5000lbs | 6500lbs | 9000lbs |
Altitude range | 103-595mm / 4-23.4in | 103-595mm / 4-23.4in | 103-595mm / 4-23.4in |
Color | Black | Black | Black |
Package List
No. | Name | Picture | QTY |
---|---|---|---|
1 | RV scissor jacks | [Diagram of RV scissor jack mechanism] | 2 or 4 pcs |
2 | Hand crank | [Image of L-shaped crank handle] | 1pc |
3 | Magnetic socket | [Image of magnetic socket tool] | 1pc |
4 | Magnetic bubble level | [Image of magnetic bubble level tool] | 1pc |
Installation
Step 1: Preparation for Installation
1.1 Park RV on level ground. Prevent wheels from rolling by activating the emergency brake and/or by using tire chocks.
1.2 Before proceeding with installation, perform this important test to ensure that the jack has sufficient position clearance to close and open at the installation location:
- a. Clamp the jack to the vehicle frame using two "C" clamps or Vise grips.
- b. Close the jack with the crank handle and check to ensure that the location chosen will allow the jack to close without coming into contact with or obstructing any under-chassis components (e.g., plumbing, exhaust, etc.).
- c. Open the jack until it touches the ground. Recheck location and adjust as needed.
- d. Once in place, apply enough pressure so the jack cannot move during the installation procedure. After the installation is completed, remove clamps or Vise grips.
Step 2: Fix the Jack
Method 1: Bolt-On Installation (Hardware not included)
WARNING: BEFORE DRILLING HOLES, BE SURE THE DRILL WILL NOT DAMAGE UNDER-CHASSIS COMPONENTS WHICH MAY BE ROUTED INSIDE VEHICLE FRAME (e.g., Electrical, gas, water, generator fuel lines, holding tank plumbing, water heater).
2.1. Using the mounting plate as a template, mark the locations of the four mounting holes on the vehicle frame. Then remove the jack.
2.2. Mark the center of each hole location with a center punch and hammer.
2.3. Drill a 1/8" pilot hole and finish by drilling holes with a 5/16" diameter drill.
2.4. Reposition jack. Use a 9/16" socket and ratchet to install the jacks to the vehicle frame using four screws and four lock washers per jack (Refer to Fig. 1).
[Fig. 1: Diagram showing RV scissor jack mounted to vehicle frame using bolts and washers.]
Method 2: Weld-On Installation
Weld each mounting plate to the vehicle frame with 1" welds, as shown (Refer to Fig. 2).
[Fig. 2: Diagram showing RV scissor jack mounting plate being welded to vehicle frame.]
Operation
- Park RV on level ground; prevent wheels from rolling by using tire chocks.
- Level trailer fore and aft using the tongue jack or landing gear.
- Check level gauge for the low side of the trailer. Crank down stabilizers on the low side first, bringing the trailer to a fine level position.
- Crank down stabilizers on the opposite side of the trailer to ensure maximum stability. Then re-snug stabilizers on the low side of the trailer if necessary.
Note: Before Moving Trailer
Crank up stabilizers to fully closed position and tighten 1/4 turn to secure in Travel position. This prevents stabilizers from working open due to road vibration.
Maintenance
Use small amounts of WD-40 or similar lubricant on drive screw threads and bolt locations as required.