Curt Group 45143 User manual

CURTMFG.COM •NEED ASSISTANCE? •877.287.8 634 •45143-INS-RA •PAGE 1
INSTALLATION MANUAL 45143
Product Photo
Parts List
Item Qty Description
1 1 Loaded ball mount assembly
2 1 Anti-rattle clamp plate
3 1 Anti-rattle hitch pin
4 1 Clip
Product Registration
CURT Group stands behind our products
with industry-leading warranties. Provide
feedback and help us to improve our
products by registering your purchase at:
warranty.curtgroup.com/surveys
Level of Difficulty
Easy
NOTICE
Before you begin installation, read all instructions thoroughly.
Proper tools will improve the quality of installation and reduce the time required.
Ensure the trailer ball size matches the trailer coupler.
If it does not, the trailer could become uncoupled.
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) 7,500 lbs.
Tongue weight (TW) 750 lbs.
Tools Required
Torque wrench Socket
Torque Specifications
1" bolt 250 ft-lbs.
1/2" anti-rattle pin 35 ft-lbs.
Use above torque setting unless otherwise noted
WARNING
Never exceed the vehicle manufacturer's recommended towing capacity. The ratings of
the trailer ball are intended to represent the capability of the product and in no way reflect
the ratings or capacity of the towing system it is being used with. The consumer or
operator are strongly advised to know the ratings of the various components of the
towing system and never exceed the limits of the lowest rated component being used.
Use of any pin other than what is provided by the manufacturer
could be a serious safety hazard and will void the warranty.
Ensure that the safety chains operate freely around the trailer ball
system and do not become entangled in the trailer ball system.
When the ball can be moved five degrees or more from a vertical position with minimal force,
by hand, the product has reached the end of its useful life and must be replaced. Continued
use of a worn trailer ball assembly may result in the trailer becoming separated from the
vehicle. Consult CURT customer service if you have any questions.
Periodically check the hex nut and ensure it is tightened to the correct torque specifications.
Before every use, be sure the snap ring on the pivot pin
of the trailer ball assembly is in place and properly seated.
Immediately discontinue product use if the snap ring is missing on the end of the trailer ball
pivot pin or if the trailer ball pin has backed partially out of the trailer ball assembly.

CURTMFG.COM •NEED ASSISTANCE? •877.287.8 634 •45143-INS-RA •PAGE 2
Step 2
Insert the ball mount (#1) into your receiver tube
and align with the hitch pin hole in the receiver.
Step 1
Place the anti-rattle clamp plate (#2) inside the hollow ball
mount shank and align the nut with the hitch pin hole.
Note: The small tab on the back of the clamp
plate may be bent straight to ease installation.
Step 3
Place the supplied lock washer onto the anti-rattle
hitch pin (#3) and secure the ball mount by threading the
pin completely through the nut in the anti-rattle clamp plate (#2).
Tighten the anti-rattle hitch pin to 35 ft-lbs. and insert
the clip (#4) through the hole in the exposed end.
DANGER
Failure to tighten hardware to the specified
torque can result in serious injury or death.
Step 4
Grease the trailer ball assembly, using the grease zerk located
on the bottom of the RockerBall™shank, before initial use and
periodically, with a high-quality molybdenum-based grease.
DANGER
Failure to grease the trailer ball assembly may lead
to failure and can result in serious injury or death.
ASSEMBLY
Parts List
Item Qty Description
1 1 Loaded ball mount assembly
2 1 Anti-rattle clamp plate
3 1 Anti-rattle hitch pin
4 1 Clip
2
3
1
4