6
Important Trailer Safety Information
Trailer Ball & Couplers
WARNING: Failure to properly engage the hitch ball in
the coupler ball socket and securely lock the coupler
latch mechanism can cause the trailer to become
detached from the tow vehicle while traveling, which
may cause serious injury or property damage.
AVERTISSEMENT: Le non-respect d'engager
correctement la boule d'attache dans la cavité de la
boule de l'attelage et de verrouiller solidement le
mécanisme du loquet de l'attelage pourrait mener la
remorque à se détacher du véhicule remorqueur
pendant le déplacement, ce qui pourrait causer des
blessures graves ou des dommages à la propriété.
Ball diameter for which rating (GVWR) shall not exceed
the gross trailer weight marked on the trailer coupler.
The hitch balls have the rated load they are capable of
towing stamped Into the top of the ball.
Make sure the ball that you use to tow your trailer has the
same capacity rating as the coupler.
Do not use a different size ball than the size the coupler is
designed to use.
Before Towing:
Check mounting bracket hardware for wear and proper
tightness. Replace bent, broken, or worn hardware.
Tighten hardware to 75-94 ft. lbs. Use only the hardware
provided with the Trailer. If replacement hardware is
needed, order replacement kit 8.924-356.0.
Make sure that the trailer safety chains are properly
connected to the towing vehicle and trailer according to
SAE J684. See Safety Chain information in your manual.
Make sure that all trailer lighting is hooked up and working
properly.
Warning: Failure to follow all installation instructions
could result in coupler failure.
AVERTISSEMENT: Le non-respect de toutes les direc-
tives d'installation pourrait entraîner une panne du
coupleur.
Variable Height Bracket:
Coupler operation must not be impaired in any way. Do not
use if coupler operation is impaired.
Bolting Instructions:
Align holes in coupler and mounting bracket. NOTE:
Coupler must be secured to mounting bracket using two
sets of holes in the mounting bracket. Insert two (2) 5/
8”x4.5”, grade 5 bolts through desired mounting bracket
holes and coupler. For each bolt, Place one (1) washer at
the bolt head side and another at the bolt thread side
before assembling the nuts. Tighten lock nuts to 90-96 ft.
lbs. After installation, ensure coupler operation is not
impaired in any way. Do not use if coupler operation is
impaired. The hardware provided with the trailer has a
self-lubricating coating which is taken into account for the
tightening torque above, and is lower than standard
hardware and also is more consistent with re-torque spec-
ifications to first-torque than standard hardware. Order
replacements with the 8.924-356.0 replacement kit, or
consult your hardware vendor for applicable, higher,
torques for the application.
Maintenance
Keep ball pocket and mechanism 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 pin and replace if necessary
Operation
To Couple:
1. Block trailer wheels.
2. Align hitch ball beneath coupler.
3. Open coupler locking lever. While holding locking
lever open, lower the coupler over the hitch ball until
ball is fully seated into the ball pocket.
4. If locking lever is pinned open, remove pin. Move
locking lever to the closed position. Check that the
latch is engaged by lifting up on back of locking lever.
Also, check that the hitch ball is fully seated and ball
clamp is below the ball. If the ball is not seated with
lever in the closed position and latch engaged, DO
NOT TOW.
Repeat the above steps.
Class
Coupler
Ball Diameter
II
3,500# GVWR
2”
III
5,000# GVWR
2”
IV
8,000# GVWR
2 5/16"
Landa TR 3500 / 6000 Operator’s Manual 8.913-956.0 - P
5-Position
Mounting
Bracket
