LD Quick-Lock Trailer Coupler Instruction Manual
- October 30, 2023
- LD
Table of Contents
LD Quick-Lock Trailer Coupler
INSTALLATION INSTRUCTIONS
- Bolt the coupler to the front of the trailer tongue using the largest possible bolts that will fit through the coupler side holes. Use all available side holes. Additional bolts may be used in top holes for extra strength if desired. Do not drill or otherwise enlarge or modify any mounting holes.
- If the coupler is to be welded to the trailer tongue, care must be taken to get good penetration without undercutting either the coupler or the tongue. Weld at least the entire bottom edge of both sides.
ASSEMBLY INSTRUCTIONS
- Assemble all parts as shown in the diagram above. Note that the locking lever must be in the unlocked position when assembling.
- Adjust the coupler to the ball by raising the channel lock and turning the nut with your fingers. Proper adjustment is obtained when the coupler is as tight as possible on the ball and the locking lever can still be opened and closed. Check adjustment frequently and tighten if necessary.
OPERATION INSTRUCTIONS
Use only with specified ball size. To Unlock – Pull the locking trigger upward with an index finger and lift the locking lever. To Lock – Push the locking lever handle down. The optional locking pin or a pad- lock may be inserted in the locking lever hole for extra security.
WARNING: Every time a coupler is used, make certain the ball is completely engaged in the socket and the coupler is securely locked. Failure to do so could result in serious or fatal injury. Safety chains must be used. Cross safety chains under coupling allowing only enough slack for turns.
MAINTENANCE & REPAIR INSTRUCTIONS
- Do not use a coupler with any bent or otherwise damaged parts. Repair kits are available which contain all parts except the housing.
WARNING: These component parts should not be interchanged with the component parts of any other Dutton-Lainson Company model or other manufacturer’s couplers.
SAE CLASS 1
MODELS 940-1, 950-1, 960-1 & 970-1 For gross trailer weights up to 2,000
lb/907 kg. Max. Tongue Wt. 200 lb (91 kg.) Repair Kit No. 6256
SAE CLASS 2
MODELS 980-2, 981-2 & 982-2 For gross trailer weights up to 3,500 lb/1588 kg.
Max. Tongue Wt. 15% GTW Repair Kit No. 6257
SAE CLASS 3
MODEL 985-3 For gross trailer weights up to 5,000 lb/2268 kg. Max. Tongue Wt.
15% GTW Repair Kit No. 6257
This product complies with SAE J684 and VESC V-5 Standards. For added trailer security, use Model 6298 D-L Hitch-Lock® Trailer Guard. Available at most trailer and towing departments.
- Dwg. No. 203013P 3/21
- 1998/2021 CORNHUSKER PRESS
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