Lippert CURT 48641 User manual

CURTMFG.COM •NEED ASSISTANCE? •877.287.8 634 •48641-INS-RB •PAGE 1
INSTALLATION MANUAL 48641
Product Photo
Parts List
Item Qty Description
1 1 Channel-mount lunette ring
2 1 Channel-mount
3 1 Locking pin
4 6 Washer, 5/8"
5 3 Hex head bolt, 5/8"
6 3 Nylock nut, 5/8"
Level of Difficulty
Easy
WARNING
Never exceed the vehicle manufacturer's recommended towing capacity.
The mounting channel is to be welded to a structure of sufficient strength
to support the rated capacity of the lunette ring in accordance with SAE J847.
All welding must be performed by an AWS certified welder. It is the user's responsibility
to ensure the mounting structure is capable of supporting the rated capacity.
Do not modify this lunette ring in any way. Unauthorized modification may impair the
function and / or safety and could affect the life of the product and void the warranty.
Maintain adequate vertical down (tongue) load to have control of the
trailer (generally 10%), but do not exceed the specified rated capacities.
Trailers and equipment are designed for on-road towing within the stated capacities.
For off-road applications, reduce the capacities listed in the specifications table by 25%.
Keep safety chains in place and in working order. Never operate
the product without the safety chains attached to vehicle.
This product is rated for use in the rise position only as shown. Do not use in the drop position.
CAUTION
Check for damaged parts before each use. Carefully check that the product will operate
properly and perform its intended function. Replace damaged or worn parts immediately.
Never operate the product with a damaged part.
Maintenance
Inspect the unit for proper operation, and worn, damaged or missing parts.
Replace as required or when the unit's wear exceeds 1/8" from the original surface.
Check the hardware torque specification after the first
200 miles of towing and every 400 miles after that.
NOTICE
Before you begin installation, read all instructions thoroughly.
Proper tools will improve the quality of installation and reduce the time required.
To help prevent damage to the product or vehicle, refer to the specified
torque specifications when securing hardware during the installation process.
Weight Capacity
Gross trailer weight (GTW) 40,000 lbs.
Tools Required
Torque wrench Ratchet
Socket, 15/16" Wrench, 15/16"
Welding supplies --
Product Registration
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Torque Specifications
5/8" bolt 180 ft-lbs.
Use above torque setting unless otherwise noted

CURTMFG.COM •NEED ASSISTANCE? •877.287.8 634 •48641-INS-RB •PAGE 2
Mounting the Lunette Ring
Determine the optimal height of the
lunette ring. Note: This product is rated
for use in the rise position only as shown.
Do not use in the drop position.
Secure the lunette ring to the trailer channel
using the three 5/8" bolts, six washers and
three nuts. Tighten all hardware to 180 ft. lbs.
Note: Never exceed the rated capacity of
the vehicle or lowest rated towing component.
BEFORE EACH USE: Inspect the unit for proper
operation and worn, damaged or missing parts.
Replace parts as required or when the unit's
wear exceeds 1/8" from the original surface.
Unlocking the Lunette Ring
Ensure the locking pin is in the unlocked
position prior to hooking up the trailer.
Remove the padlock. Lift and turn the
locking pin to the side, 90 degrees, as shown.
Reinsert the padlock to keep the locking pin
secure during travel.
Locking the Lunette Ring
Drop the locking pin into the position
shown to the right. Install a padlock
(not included) into the locking pin.