Installation Guide

ManualsBrandsCURT ManualsAutomotiveReplacement 2-5/16" Switch Ball Trailer Hitch Tow Ball (Fits 1-1/8" Neck)

CAUTION: The tongue weight rating of the spring bars

represents the capacity of a pair of bars, not an individual

bar. Always use a pair of spring bars and be sure they are

of the same weight rating.

The loaded ball height should never be greater than the

uncoupled ball height. Front wheel overload and loss of rear

wheel traction can result and can lead to unstable handling.

It can reduce braking ability and create a tendency to

jackknife when turning and braking at the same time.

If the loaded trailer ball height is greater than the uncoupled

height, reduce take-up on the spring bar chains, remeasure

and adjust until the proper height is obtained.

CAUTION: If the lift chain is angled fore or aft at the top

within the lift bracket, it may catch on the bracket when

turning. This could damage the lift bracket or pry it open.

Keep the socket-mounted ends of the spring bars and

the lock pins in the head assembly free from dirt and well

lubricated. Excessive wear in this area may indicate an

overload or inadequate lubrication.

Keep the head assembly exterior clean. Do not allow dirt

or stones to lodge between the spring bars and the head.

Keep hitch parts painted to prevent rust and

maintain good appearance. Do not paint over labels.

Keep lift brackets clean and lubricated

to ensure ease of operation.

WARNINGS

MAINTENANCE

WEIGHT RATINGS

WARNING: NEVER EXCEED YOUR VEHICLE MANUFACTURER'S RECOMMENDED TOWING CAPACITY

INSTALLATION INSTRUCTIONS

Part# Gross Trailer Weight Tongue Weight

Without Spring Bars

17050 Not to exceed 6,000 lbs.* Not to exceed 600 lbs.*

17051 Not to exceed 8,000 lbs.* Not to exceed 800 lbs.*

17052 Not to exceed 10,000 lbs.* Not to exceed 1,000 lbs.*

17057 Not to exceed 14,000 lbs.* Not to exceed 1,400 lbs.*

With Spring Bars

17050 5,000 - 6,000 lbs. 500 - 600 lbs.

17051 6,000 - 8,000 lbs. 600 - 800 lbs.

17052 8,000 - 10,000 lbs. 800 - 1,000 lbs

17057 10,000 - 14,000 lbs. 1,000 - 1,400 lbs.

* When spring bars are not used, the weight rating is dependent

upon the trailer ball manufacturer's weight ratings. Do not exceed

the maximum weight rating of the trailer ball.

ROUND BAR WEIGHT DISTRIBUTION

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Summary of content (5 pages)

PAGE 1
INSTALLATION INSTRUCTIONS WARNING: NEVER EXCEED YOUR VEHICLE MANUFACTURER'S RECOMMENDED TOWING CAPACITY ROUND BAR WEIGHT DISTRIBUTION MAINTENANCE Keep the socket-mounted ends of the spring bars and the lock pins in the head assembly free from dirt and well lubricated. Excessive wear in this area may indicate an overload or inadequate lubrication. Keep the head assembly exterior clean. Do not allow dirt or stones to lodge between the spring bars and the head.
PAGE 2
Measure the tow vehicle 17 5 16 Pick reference points on the front and rear bumper of the towing vehicle. Measure and record height to pavement. Front bumper to pavement 4 10 11 Rear bumper to pavement 1 9 7 2 6 19 18 12 8 13 15 3 Figure 1 14 For vehicles with air springs, air shocks or automatic leveling systems only, check the vehicle's owners manual or other instructions on these items.
PAGE 3
Step 4 Place six 1/2" flat washers (#19) on pin (#18) and insert pin into the unthreaded hole in the upper portion of the head channel. See Figure 5. The number of washers may have to be adjusted later. 1 10 2 Attaching the trailer to the ball Using the trailer tongue jack, lower the coupler onto the trailer ball and close coupler latch. Do not retract jack fully at this time. Allow the jack to support some of the tongue weight.
PAGE 4
Lift bracket operation Before raising or lowering the lift bracket, raise the front of the trailer to reduce the spring bar chain tension. This will make the lift bracket operation easier and safer. WARNING: Keep clear of the pivot path of all moving parts when there is tension on the spring bar chain. Maintain control of the lift handle at all times when raising or lowering the spring bar. Be sure that the locking hair pin is in place once lift bracket is in the up position.
PAGE 5
TOWING TIPS Driving a tow vehicle Good habits for normal driving need extra emphasis when towing a trailer. The additional weight of the trailer affects acceleration and braking. Extra time should be allowed for passing, stopping and changing lanes. Signal well in advance of a maneuver to let other drivers know your intentions. Severe bumps and badly undulating roads can damage your towing vehicle, hitch and trailer, and should be negotiated at a slow, steady speed.