Bulldog Collar-Lok™ Couplers
®
Read, Understand, Follow and Save These Instructions
Read, understand and follow all of these instructions and warnings (Instructions) before installing and using this product. Install and use this product
only as specified in these instructions. Improper installation or use of this product may result in property damage, serious injury, and/or death.
Never allow installation or use of this product by anyone without providing them with these instructions. You must read, understand and follow all
instructions and warnings for any product(s) to which this product is used in conjunction with or installed. Save these instructions with the product
for use as a reference for any future installation and use of the product.
Failure to follow these warnings and instructions may result in
WARNING
• Purchaser/owner must ensure that product is installed according to these
instructions.
• Purchaser/owner must not alter or modify product.
• Operator and bystanders should never position any part of body under
any portion of this product or the load being supported.
• Do not allow children to play on or around this product or the load being
supported.
• Never exceed maximum rated capacity. Refer to stamped markings or
decals on product to obtain rated capacity. If uncertain, contact Cequent
Performance Products at 1-800-632-3290 or www.cequentgroup.com
• Use only the proper ball for this coupler as indicated on the coupler body.
If uncertain, contact Cequent Performance Products at 1-800-632-3290
or www.cequentgroup.com
• Always secure load, vehicle and trailer (by blocking wheels) before
latching/unlatching coupler.
• Use caution when uncoupling as tongue may rise suddenly due to
negative tongue load.
• After installing channel and/or coupler, if coupler operation has been
impared in any way, do not use it.
Installation Instr uctions
property damage, serious bodily injury, and/or death.
• Keep the ball pocket and mechanism clean. When parking or storing
your trailer, keep the coupler off the ground so dirt and/or other foreign
material will not build up in the coupler ball pocket.
• Do not tow if ball is not fully seated and/or coupler is not closed.
• All welding must be performed by a AWS certified welder.
• This product rated according to SAE J684.
Before Towing:
• Check vehicle, channel, hitch, hitch ball and coupler for signs of wear
or damage and that the coupler handle opens and closes freely. If
coupler and/or channel is deformed or damaged, replace complete
coupler and bracket.
• Always replace bent, broken, or worn parts before using this product.
• Close coupler securely by ensuring that the hitch ball is fully seated in
the coupler ball pocket and the pin is inserted behind the collar or latch.
• Check channel hardware for wear and proper tightness. Replace bent,
broken, or worn hardware. Tighten hardware to appropriate SAE
proofload specifications (See table specs). Use only grade 5 hardware.
• Make sure that the trailer safety chains are properly connected to the
towing vehicle and trailer according to SAE J684.
• Make sure that all trailer lighting is hooked up and working properly.
Warning: Failure to follow these warnings and instructions may result in
property damage, serious bodily injury, and/or death.
Before mounting the coupler confirm that there will be no interference from the tow vehicle, tongue, ground, and any other mounted accessories
while stationary or in motion. Before installing, check for interference in open and closed positions. Check for interference again after
installation is complete. All welding must be performed by an AWS certified welder. The coupler must be rigidly attached to the trailer in order
for the coupler to support its maximum rated load according to SAE J684. After installation, check to make sure that coupler operation has not
been impaired in any way. Do not use coupler if its operation has been impaired.
Weld-on Instructions
• All welding must be performed by an AWS certified welder.
• If using a weld-on coupler, weld 3/16” around the interface between coupler and tongue. See illustrations below.
• Assure the coupler internal stop is butted against the end of the trailer tongue for maximum overlap.
Bolt-on Instructions
• Assure that the coupler internal stop is butted against the end of trailer tongue for maximum overlap before securing.
• Torque grade 5 bolts with locknuts to appropriate SAE proof load specifications (See table specs). No deformation
of trailer tongue end allowed.
• The number and size of fasteners required must be specified by the trailer manufacturer.
3/16” 2.0” (TYPICAL)
3/16”
3/16”
Minimum Tongue Overlap - 8.5”
2.0” (TYPICAL
3/16”
3/16”
3/16”
2B, 4B and 5B Models
3B Model
No
undercut
or
washout
while
3/16
Minimum Tongue Overlap - 2.5”
(Tongue may fit over or into coupler)
Retaining Pin
3/16”
3/16”
Minimum Tongue Overlap - 7”
Torque Specs
Ø 3/8” - 23 ft.lbs.
Ø 1/2” - 55 ft. lbs.
Ø 5/8” - 110 ft. lbs.
3.0” Channel
(Not included)
Supplied
Bolts
welding.
Minimum Tongue Overlap - 6.5”
Minimum Tongue Overlap - 6.5”
Keep ball pocket and mechanism
Oil
clean. The following procedures
should be performed at least annually:
• Check set screw torque.
• Grease ball pocket.
• Oil pivot points with SAE 30 wt.
motor oil.
• Inspect retaining pins and replace if necessary.
Minimum Tongue Overlap - 7”
Maintenance
Oil
Retaining Pin
Oil
Grease
(Ball Pocket)
F3290 (Rev-D-16672) 1/12
M-Style Coupler
Pin
Operation
To Couple:
1) Block trailer wheels.
2) Align hitch ball beneath coupler.
3) If the coupler is closed, open it by removing the pin behind the collar and sliding the collar away
from the ball pocket. Be sure the coupler cap is open and holds the collar back.
4) Lower the trailer onto the hitch ball.
5) Visually check that the hitch ball is fully seated in the coupler.
6) After the hitch ball is seated in the coupler, carefully close the coupler cap. Be sure the collar
springs toward the ball pocket and captures the coupler cap.
7) Reinsert the pin behind the collar. Do not tow without pin in place.
L-Style Coupler
H-Style Coupler
Latch
Pin
To Uncouple:
1) Block trailer wheels.
Pin Lever
2) Open the coupler by removing the pin behind the collar and sliding the collar away from the ball
pocket. Be sure the coupler cap is open and holds the collar back.
3) Raise the trailer from the hitch ball.
Coupler is Closed
Collar is Capturing Cap
Cap (Closed) Body
Collar
(Back)
Coupler is Open
Cap is Open
Cap (Open) Body
Collar
(Forward)
To Couple:
1) Block trailer wheels.
2) Align hitch ball beneath coupler.
3) If the coupler is closed, open it by removing the pin in the latch and lifting the latch. Be sure the cou-
pler cap is open and holds the collar back.
4) Lower the trailer onto the hitch ball.
5) Visually check that the hitch ball is fully seated in the coupler.
6) After the hitch ball is seated in the coupler, carefully close the coupler cap and lower the latch. Be
sure the collar springs toward the ball pocket and captures the coupler cap.
7) Reinsert the pin in the latch. Do not tow without pin in place.
To Uncouple:
1) Block trailer wheels.
2) Open the coupler by removing the
pin in the latch and lifting the latch.
Be sure the coupler cap is open and
holds the collar back.
3) Raise the trailer from the hitch ball.
How to Order
Use only Cequent Performance Products’ parts or parts of equal quality for repair. Replacement parts are available through Cequent Performance
Products’ Customer Service Department, 1-800-632-3290. Please specify product model number.
Limited Five Year War ranty
Limited Warranty. Cequent Performance Products, Inc. (“We” or “Us”) warrants to the original consumer purchaser only (“You”) that the product
will be free from material defects in both material and workmanship for a period of five years, ordinary wear and tear excepted; provided that
installation and use of the product is in accordance with product instructions. There are no other warranties, express or implied, including the
warranty of merchantability or fitness for a particular purpose. If the product does not comply with this limited 5 year warranty, Your sole and
exclusive remedy is that We will replace the product without charge to You and within a reasonable time or, at our option, refund the purchase price.
This warranty is not transferable.
Limitations on the Warranty. This limited warranty does not cover: (a) normal wear and tear; (b) damage through abuse, neglect, misuse, or as a
result of any accident or in any other manner; (c) damage from misapplication, overloading, or improper installation, including welds; (d) improper
maintenance and repair; and (e) product alteration in any manner by anyone other than Us, with the sole exception of alterations made pursuant to
product instructions and in a workmanlike manner.
Obligations of Purchaser. To make a warranty claim, contact Us at 47912 Halyard Dr. Suite 100, Plymouth, MI 48170, 1-800-632-3290, identify the
product by model number, and follow the claim instructions that will be provided. Any returned product that is replaced or refunded by Us becomes
our property. You will be responsible for return shipping costs. Please retain your purchase receipt to verify date of purchase and that You are the
original consumer purchaser. The product and the purchase receipt must be provided to Us in order to process Your warranty claim.
Remedy Limits. Repair or replacement is Your sole remedy under this limited warranty or any other warranty related to the product. We shall not be
liable for service or labor charges incurred in removing or replacing a product or any incidental or consequential damages of any kind.
Assumption of Risk. You acknowledge and agree that any use of the product for any purpose other than the specified use(s) stated in the product
instructions is at Your own risk.
Governing Law. This limited warranty gives You specific legal rights, and You also may have other rights which vary from state to state. This
limited warranty is governed by the laws of the State of Michigan, without regard to rules pertaining to conflicts of law. The state courts located
in Oakland County, Michigan shall have exclusive jurisdiction for any disputes relating to this warranty.
47912 Halyard Dr. Suite 100
Plymouth, MI 48170 USA
800/632-3290
www.cequentgroup.com