Curt Group 16190 User manual

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INSTALLATION MANUAL 16190
Tools Required
Ratchet Torque wrench
Socket set --
Product Photo
Torque Specifications
M8 bolt 16 ft-lbs.
M14 bolt 100 ft-lbs.
Use above torque setting unless otherwise noted
Product Registration
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WARNING
Never exceed the vehicle manufacturer's recommended towing capacity. Trailer and contents
combined must not exceed tow vehicle, hitch and / or trailer tow ratings. Exceeding rated
capacity may result in separation. Exceeding rated capacity may result in damage to 5th wheel
hitch, towing vehicle, trailer and or cause serious injury or death.
Fully instruct and demonstrate the operation of this 5th wheel hitch to the end user. Include the
importance of observing all warnings contained herein, including warning labels on 5th wheel
hitch main body. Provide this manual in its entirety to the end user. Serious injury or death may
result if the warnings above are not observed.
To avoid serious injury, do not expose hands, body parts or clothing between the truck and
trailer or the truck's bed sides and trailer. Extreme care should be observed to avoid serious
injury to self, property and observers.
Never position yourself or others under the trailer's kingpin area (danger zone) during coupling
and uncoupling. If for any reason you must position any part of your body under the trailer,
between the truck and the trailer or between the trailer's kingpin and 5th wheel hitch, you must
follow the steps in the 'Danger Zone Precautions' section above. Improperly coupled trailers can
separate and drop without notice.
Level of Difficulty
Moderate
DANGER ZONE PRECAUTIONS
Block all trailer tires in front and behind with appropriate wheel chocks. Do not substitute
objects such as, but not limited to: stones, wood blocks, etc. Front trailer lifting jacks must be
supporting the trailer and resting on a firm and level surface.
Towing vehicle must be stationary with automatic transmission
in park (manual in neutral), emergency brake applied and engine off.
Parts List
Item Qty Description
1 1 Main body / Head assembly
2 1 Leg weldment
3 1 Leg weldment (with INS label)
4 1 Handle assembly
5 1 Handle lock bar
6 2 Button head cap screw,
M8 - 1.25" x 30
7 2 Lock washer, M8
8 1 Latch spring
9 1 Safety latch pin, 3/8"
10 4Hex bolt, M14
11 4Lock washer, M14
12 4Flat washer, M14
13 4Nylock nut, M14
14 4Base rail mounting clip
15 4Base rail mounting pin,
1/2" diameter
Weight Capacity
Gross trailer weight (GTW) 30,000 lbs.
Vertical load 7,500 lbs.
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.

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Ensure the leg with the warnings and
instruction labels is placed on the side
of the unit with operation handle.
14
15
2
13
10 12 11
Before you begin
Assembly includes measuring the height requirement for the 5th
wheel head in relation to the trailer ride height at the kingpin box and
skid plate. Ideally, the trailer should ride as near to level as possible.
The 5th wheel is adjustable from 13" to 17", from the truck bed to
the top of its skid plate. Adjustment is attained by adjusting the main
body up or down, in relation to the legs, in 1.25" increments (typical
clearance between the truck bed rails and the trailer should be a
minimum of 5 1/2"). Follow the steps below to measure.
Step 1
With the trailer on a firm and level surface, set chock blocks
in front of and behind the tires. (Do not substitute wood blocks,
rocks, etc. for chock blocks.) Extend front trailer lifting jacks,
adjust as required to set trailer at or near level.
Step 2
Measure from the ground to under the trailer's kingpin
box skid plate or lube plate, if used. This will be the portion
in contact with the 5th wheel's skid plate once coupled.
Step 3
Measure from the ground to the surface of the truck bed.
Subtract the measurement taken in Step 2 from Step 1.
This value will be near the height requirement for the 5th wheel.
ASSEMBLY
CALCULATING HEIGHT
Parts List
Item Qty Description
1 1 Main body / Head assembly
2 1 Leg weldment
3 1 Leg weldment (with INS label)
4 1 Handle assembly
5 1 Handle lock bar
6 2 Button head cap screw,
M8 - 1.25" x 30
7 2 Lock washer, M8
8 1 Latch spring
9 1 Safety latch pin, 3/8"
10 4Hex bolt, M14
11 4Lock washer, M14
12 4Flat washer, M14
13 4Nylock nut, M14
14 4Base rail mounting clip
15 4Base rail mounting pin,
1/2" diameter
MAIN BODY ASSEMBLY
Before you begin
Once you have determined the height adjustment required for the
5th wheel, assemble the legs to the main body using the appropriate
holes. Occasionally, the trailer's kingpin pin box will require
adjustment to facilitate correct ride height.
WARNING
The jaws on the 5th wheel head are spring loaded. The jaws will open
rapidly when the safety pin is removed and the handle is moved to the
unlock position. Keep hands clear of the jaws at all time.
3
4
5 8
7
1
9
6

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Step 1 - Leg attachment
Attach the leg weldments (#2, #3) to the main body / head assembly
(#1) with the supplied hardware (#10, #11, #12, #13). Depending on
which holes are required to achieve proper ride height, attachment
of the legs to the main body may be easier with the main body
positioned upside-down.
Note: The head assembly can easily be removed from
the main body to further aid installation of the hardware.
IMPORTANT: Torque the four M14 hex bolts (#10) to 100 ft-lbs.
Step 2 - Check the Base Rails
Before attaching the 5th wheel hitch to the tow vehicle's base
rails, check the base rails in your truck to be sure they are properly
installed and are parallel with each other. The diagonal dimensions
should be the same, see diagram below.
Step 3 - Mount to the Base Rails
With the base rails correctly positioned, the 5th wheel will drop into
the slots on the top surface of the base rails. Align the four tabs on
the bottom of the 5th wheel legs with the corresponding slots in the
tow vehicle's base rails.
Lower the 5th wheel into the rails. Secure with four 1/2" rail mount
pins & clips (#14, #15) as illustrated in the diagrams below. Note: It
may be easier to position the 5th wheel hitch assembly and lower it
into the rails with the center head section removed to reduce weight.
If installing new base rails, follow the instructions provided by the rail
manufacturer for proper placement, alignment and spacing per your
vehicle's year, make and model. If the 5th wheel is being mounted to
existing base rails, and alignment issues arise, it may be necessary
to proceed as follows:
Loosely assemble the legs to the 5th wheel main body. Place the
unit on top of the existing base rails, aligning the foot tabs with the
outermost rectangular slots of the base rails. When the 5th wheel
foot tabs drop into the four rectangular slots, secure the foot tabs
using the four provided pins & clips (#14, #15). Continue assembly
by tightening the M14 hex bolts to 100 ft-lbs. If difficulty is still
experienced fitting the 5th wheel into the existing base rails, it may
be necessary to loosen the base rail bolts and realign the base rails
to facilitate installation. It is recommended to replace old lock washers
with new lock washers at this time. Torque base rail bolts to the rail
manufacturer's specifications. Continue with the installation
by tightening the bolts to 100 ft-lbs.
MAIN BODY ASSEMBLY (CONT)
10
11
12
13
Ensure rail kits are installed
according to rail kit manufacturer's
recommended specifications
Each base rail must have a bolt
in either of the marked holes. Check
for obstructions before drilling
Measure diagonal from
same reference point.
Distances should be equal
Rear edge of truck bed
to rear edge of base rail
Front of truck
Rear edge of truck bed
A
Detail A

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Step 1
Locate the provided handle assembly and hardware pack.
WARNING
The jaws on the 5th wheel head are spring loaded. The jaws will
open rapidly when the safety pin is removed and the handle is
moved to the unlock position. Keep hands clear of the jaws at all time.
Slide the handle assembly (#4) over the end of the handle mount bar
on the 5th wheel head.
Step 2
Insert the latch spring (#8) into the slot on the handle mount bar
and then continue sliding the handle assembly (#4) into place.
Position the handle assembly so the first M8 cap screw (#6) and
lock washer (#7) can be dropped into position behind the latch spring.
Step 4
With the first M8 cap screw (#6) in place behind the latch spring,
pull the handle assembly (#4) back out until the second M8 cap screw
and lock washer (#7) can be dropped into position.
Step 5
With both M8 cap screws (#6) in place through the handle assembly
(#4), slide the latch plate (#5) into position and secure it by threading
the M8 cap screws into the tapped holes. Alternate between the two
screws while tightening. Evenly draw the latch plate up to the handle.
Note: Pulling out on the handle while tightening the M8 cap screws
will ease installation.
CAUTION
Do not crush the handle assembly tube by over
tightening the M8 cap screws. The handle assembly must
slide freely over the handle mount bar to latch properly.
Step 6
Confirm the lock bar latches into position as shown in Detail B.
Complete the handle installation by inserting the safety
lynch pin (#9), locking the handle in the tow position.
HANDLE ASSEMBLY
Parts List
Item Qty Description
4 1 Handle assembly
5 1 Handle lock bar
6 2 Button head cap screw, M8 - 1.25" x 30
7 2 Lock washer, M8
8 1 Latch spring
9 1 Safety latch pin, 3/8"
8
8
7
7
7
7
6
6
6
6
5
4
4
4
A
Detail A
4
9
8
4
66
5
9
Detail B
B

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COUPLING & LOCKING
Preparing the vehicle and trailer to couple
It is advised to perform trailer connections to the 5th wheel
on a firm and level surface. Multiple wheel chocks should
be used in front of and behind the trailer tires. Do not substitute
objects such as, but not limited to: stones, wood blocks, etc.
Open or remove the tailgate as required to safely back the
tow vehicle under the trailer and center the trailer kingpin with
the opening on the hitch head. Do not engage the kingpin into
5th wheel at this time. Stop the tow vehicle when the trailer's
skid plate is approximately 4" from the 5th wheel's skid plate.
Set automatic transmissions to park and activate
the emergency brake. Set manual transmissions
to neutral and activate the emergency brake.
Adjust the front trailer lifting jacks so the trailer's kingpin
skid plate is approximately 1/2" below the top surface of
the 5th wheel's skid plate lead-in ramp. See the diagram
below for proper height setup prior to coupling.
Note: Trailer height setup is critical to allow the 5th wheel
jaws to engage the kingpin and lock properly. Never attempt
to lower the trailer's kingpin into the 5th wheel.
4"
1/2"
Locked Handle
GREEN indicator (circle)
Unlocked Handle
RED indicator (octagon)
Coupled Handle
YELLOW indicator (triangle)
Preparing the 5th wheel to couple
If the yellow indicator is visible, visually check that the jaws are open
as illustrated in the 'COUPLED HANDLE' diagram above. If the jaw's
are open and the handle is in the unlocked position, the 5th wheel is
ready to couple. Skip to the 'Coupling' section on next page.
If the green indicator is visible and the jaw's are closed, they must be
unlocked prior to use. The 'LOCKED HANDLE' diagram illustrates the
jaws and handle in the closed and locked position.
Remove the safety latch pin from the 5th wheel's handle. Open the
jaws by pulling handle out about 1/2" and then swinging it back
toward the front of the tow vehicle. The handle will latch in the
unlocked position and the yellow indicator will be visible from the tow
vehicle cab.
If the 5th wheel handle will not latch in the unlocked position, or the
red indicator is visible, go to the troubleshooting section to resolve the
issue before attempting to couple your trailer.
WARNING
Attempting to couple your 5th wheel in any configuration other then
the yellow couple position may result in damage to you trailer or 5th
wheel. Always ensure the jaws are open and unobstructed prior to
coupling to your trailer's kingpin.