Premier 470 Operating manual

IMPORTANT
Read these instructions completely before installing, using or
attempting to repair this product. If you have any questions,
call Premier at [phone] or [phone].
Installation, Inspection, Operation
& Maintenance Guide
MANUFACTURING CO.
THE FIRST NAME IN QUALITY COUPLINGS
Model 470 / 470H Coupling
470
470H

premier manufacturing company 1-800-255-5387 • www.premier-mfg.com
Page 2
Selecting The Right Equipment
Step 4: Browse Premier Product Catalog
Step 3: Considering Operating Conditions and Environments
Step 2: Determine “Tongue Weight Capacity”
Step 1: Determine “Gross Trailer(s) Weight”
Whatever your application, selecting the proper equipment for the job is very important. Proper selection along
with regular inspection and maintenance will help keep operating costs minimal while providing long life to each
component. Below are general guidelines for selecting Premier Couplings and Drawbar Eyes. If you feel that your
application is unique, please give Premier a call so that we may help you through the selection process.
Follow these four steps to ensure proper selection of Premier Couplings and Drawbar Eyes.
Step 2:
Determine “Tongue
Weight Capacity”
(Maximum occurring tongue weight)
Step 3:
Add Margin of Safety
(Dependent upon your equipment
and operating environment)
Step 4:
Browse Premier
Product Catalog
(Based on Steps 1 - 3)
Step 1:
Determine “Gross
Trailer(s) Weight”
(GVWR(s) of towed trailers)
“Gross Trailer(s) Weight” is usually determined by the Gross Vehicle Weight Rating (GVWR). This information is
attached to the trailer by the trailer manufacturer.
For “Double Trailer” configurations, only the rear trailer is considered
when selecting your Premier Coupling or Drawbar Eye. In this example, a
Coupling and Drawbar Eye with a “Gross Trailer Weight” rating of 40,000 lbs.
(18,143 kg) would be the minimum rating acceptable for normal, over-the-
road applications (see Tongue Weight section below).
For “Triple Trailers”, only the two most rearward trailers are
considered in selecting your Premier Coupling or Drawbar Eye.
In this example, a Coupling and Drawbar Eye with a “Gross
Trailer Weight” rating of 80,000 lbs. (36,287 kg) would be the
minimum acceptable for normal, over-the-road applications
(see Tongue Weight section below).
Double Trailer Configuration
Triple Trailer Configuration
Example only, each application may vary and should be considered unique.
Example only, each application may vary and should be considered unique.
40,000 LBS 40,000 LBS
40,000 LBS
Environments such as rough uneven roads or off-road use can dramatically increase shock loads to both drawbar
eyes and couplings. In general, increasing the “Gross Trailer Weight” (Step 1:) and “Tongue Weight Capacity”
(Step 2:) by a minimum of 25% will be sufficient for many applications. Even if an application is used off-road
occasionally, the minimum increase necessary for Gross Trailer and Tongue Weight is 25%. Certain types of
equipment and/or operating practices can also dramatically increase loads through equipment binding and/or
improper loading practices. Of special concern is high tongue weight. However, each application is unique and
every environment different, therefore your application may require more than 25%.
Once both “Gross Trailers(s) Weight” (Step 1:) and “Tongue Weight Capacity” (Step 2:) have been determined,
evaluate your operating conditions and apply an appropriate margin of safety.
Browse the Premier Product Catalog and refer to the “Specifications” section of each product. Be sure to review
the “Understanding Premier Load Specifications” section and “Coupling to Drawbar Eye Cross-Reference” sheet
on the next couple pages.
“Tongue Weight Capacity” is the maximum expected weight at
the drawbar eye. If a hinged drawbar is used, the maximum weight
will be approximately 1/2 the overall drawbar weight. If a non-hinged
drawbar is used and the actual tongue weight is not known, you can
approximate the weight by multiplying the GVWR of the towed trailer
by 15%. However, each application is unique and the best practice is
to weigh the tongue when the trailer is loaded to its GVWR.

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SAMPLE ONLY
Selecting The Right Equipment
Importance of Inspection and Maintenance
Understanding Premier Load Specifications
Weight of Trailer(s) being towed
(see “Selecting Premier Couplings &
Drawbar Eyes”).
Maximum occurring tongue
weight. Static as well as
dynamic loads.
Maximum load on latch
or upper coupling surface
containing drawbar eye.
Latches and upper coupling
surfaces are not designed
for sustained load at this
stated capacity.
The largest x-section in
eyelet portion of eye. Used to
determine compatibility
with coupling.
Minimum inside diameter
of eyelet portion of eye.
Used to determine
compatibility with coupling.
Weight of unit or pair of
units without accessories.
Each Premier product undergoes extensive design and testing prior to being introduced. We use the latest in
Computer Aided Design and Analysis Software as well as physical destructive tests. Premier’s published load
specifications are the maximum load a given product or part will withstand without failure. Premier’s testing
procedures closely follow the Society of Automotive Engineers (SAE) guidelines of Recommended Practice for
testing Couplings and Drawbar Eyes (SAE J847 & J849).
Maximum Gross Trailer Weight:
Maximum Tongue Weight:
Ultimate Latch/Upward Vertical Capacity:
Maximum Eye X-Section:
Minimum Eye Opening:
Unit Weight:
30,000 lbs. (13,607 kg)
4,500 lbs. (2,041 kg)
5,000 lbs. (2,267 kg)
1 13/16 in. (46 mm)
2 in. (51 mm)
12.6 lbs. (5.7 kg)
“Premalloy” - Premier’s Exclusive Alloy
Whether you use Premier Jacks, Couplings, Drawbar Eyes, Hinge Assemblies or any other
Premier product, regular inspection and maintenance are essential for proper function,
keeping repair costs to a minimum and above all, safe and efficient operation.
To determine wear limits, Premier created Wear Gages that help judge the useful
life of couplings and drawbar eyes (details in catalog). In accordance with Premier
and the Federal Motor Carrier Safety Regulations, these were designed to identify
wear at the critical percentages of 18% and 20%, by measuring the cross-
section of coupling hooks (horn) and drawbar eye loops. 18% wear indicates that
the product should be replaced as soon as possible. At 20% wear, the product is no longer in usable condition
and must be taken out of service immediately and replaced. The latch gage bar measures the gap space between
the top of the coupling hook and the closed latch. If the 3/8” latch gage bar can pass between this region, then
the latch components should be considered worn past safe limits and replaced. Please note that these wear gage
specifications are in accordance with Premier Mfg. Co. and the Federal Motor Carrier Safety Regulations (refer to
other manufacturer’s specifications for wear limits on their products).
Premier also provides Installation Guides for each of our major products. These help guide you through installation,
inspection, routine maintenance and part replacement. Another resource is our website at www.premier-mfg.com.
Here you will find Installation Guides, Service Guides, distributor locations, online catalogs, product information,
trade show schedules and links to trucking resources.
“The harder you work it, the harder it gets” best describes how Premalloy performs.
Premalloy actually work hardens at the contact surfaces during normal use, which results in
longer service life. Premalloy is highly recommended for off-road and aggregate type applications
due to its wear resistant characteristics. Many of Premier’s couplings are made from this exclusive
material. As you are browsing the catalog, look for the Premalloy icon next to the product photos
to determine which models are made of this material.

premier manufacturing company 1-800-255-5387 • www.premier-mfg.com
Page 4
Selecting The Right Equipment
Coupling to Drawbar Eye Cross Reference Chart
2* 3 4 5 6/6A 8 11 20 21 22 23 107 108 110 123 125 126 127 200 200L 203 205 207 238DB† 245DB† 245DB-3† 300 304 305 306 307 309 405 407SE 410
16 •••••••••••••••••••••••••••••••••••
24 •
40 •
100†••••••••••••••••••••••••••• •••••
100-4†•••••••••••••••••••••••••••••••••
130 •••••••••••••••••••••••••••• ••••
135NT ••••••••••••••••••••• •••••• •
140 • • •
150 •••••••••••••••••••••••••••••••••
160 •••••••••••••••••••••••••••••••••••
235NT •••••••••••••••••••• •••••• •
240 •••••••••••••••••••••••••••• •••••
240K •••••••••••••••••••••••••••••••••
270 •••••••••••••••••••••••••••••••••
290 •••••••••••••••••••••••••••••••••
360 •••••••••••••••••••••••••••••••••
370 •••••••••••••••••••••••••••••••••
370B •••••••••••••••••••••••••••••••••
470 •••••••••••••••••••••••••••••••••
470H •••••••••••••••••••••••••••••••••
480 •••••••••••••••••••••••••••••••••
570 •••••••••••••••••••••••••••••••••
580 •••••••••••••••••••••••••••••••••••
580J •••••••••••••••••••••••••••••••••
590 •••••••••••••••••••••••••••••••••••
690/690T •••••••••••••••••••••••••••••••••
770 •••••••••••••••••••••••••••••••••
780 •••••••••••••••••••••••••••••••••
790 • •••••••
880 • •••••••
890/890C ••••••••• •••• •••• ••••• •
2200 •••••••••••••••••••••••••••••••••
2300 •••••••••••••••••••••••••••••••••
2300B •••••••••••••••••••••••••••••••••
2400 •••••••••••••••••••••••••••••••••
2400H •••••••••••••••••••••••••••••••••
Couplings
Drawbar Eyes
† Saf-Tite Product
* Industrial Application
CAUTION: Verify that both the coupling’s and drawbar eye’s rated capacities
meet your application(s) requirements.

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Pushrod length is 3 in. (76 mm) plus thickness of mounting structure for standard installations as illustrated.
SAFETY WARNING
This product is designed for towing under
normal conditions within the stated gross
trailer weight. Do not overload or abuse this
product. Overloading or abuse may lead to
property damage, severe injury, or death.
Model 470 / 470H Coupling
470 STANDARD INSTALLATION DRAWING
SPECIFICATIONS AND LOAD CAPACITIES
REPLACEMENT PART INFORMATION
Gross Trailer Weight:
Maximum Tongue Weight:
Ultimate Latch Capacity:
Maximum Eye X-Section:
Minimum Eye Opening:
Model 470 Unit Weight:
Model 470H Unit Weight:
90,000 lbs. (40,823 kg)
18,000 lbs. (8,164 kg)
12,000 lbs. (5,443 kg)
1 13/16 in. (46 mm)
2 3/8 in. (60 mm)
32.5 lbs. (14.7 kg)
32.6 lbs. (14.8 kg)
470H STANDARD INSTALLATION DRAWING
Pushrod length is 3 in. (76 mm) plus thickness of mounting structure for standard installations as illustrated.
273A:
273C:
274:
274A:
275-50:
475:
472:
473:
Spring
Set Screw
Bolt
Locknut
Snap Ring
Pin / Handle
Latch
Pawl
*266:
*271:
*274:
*274A:
*279:
Spring
Thimble
Bolt
Locknut
Shoe
470PK Parts Kit Includes:
*Not included in parts kit, available individually
274 274A
473
273A
*279
*271
*274A
273C
472
275-50 475
*266
*274

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Model 470 / 470H Coupling
INSTALLATION
The 470/470H Coupling is only to be used and
maintained with Premier parts in the Replacement
Part Information section. Any substitution or use
of non-Premier parts in a 470/470H Coupling will
VOID ALL PRODUCT WARRANTY. This coupling
must be used with an air chamber.
Installation Procedure:
1. The 470/470H Coupling must be installed to
comply with the Federal Motor Carrier Safety
Regulations. Specifically, Section 393.70,
Paragraph C: “Towing of Full Trailers.” Prior
to install or operation, consult with local,
State and Federal agencies, as there may
be additional applicable laws governing
installation and use of this product.
2. Make certain that the cross member the
470/470H Coupling is to be mounted on is of
sufficient strength to withstand the load rating
of the coupling.
3. Measure the mounting structure thickness and
cut the pushrod on the air chamber to a length
of 3” plus the mounting structure thickness (i.e.
1/2” thick mounting structure would equate to:
3” + 1/2” = 3 1/2” pushrod).
4. 470: Has two top sets and three bottom sets
of base mounting holes (10 holes total). Both
top two sets must always be used (all 4 holes).
For the bottom sets: drill either the center set
of holes only (for a total of 6 mounting holes),
or drill only the two furthest apart sets of holes
(for a total of 8 mounting holes).
470H: ALL mounting hole sets must be used.
5. Using the Standard Installation Drawing,
measure and layout the cross member and
then drill the holes for the mounting bolts and
pushrod.
6. Mount the Coupling, 281 Air Chamber, 467 Air
Chamber Bracket and 271 Thimble as shown
in the Standard Installation Drawing using
either Premier’s 508 Bolt Kit and provided
Optional Accessories:
- 282 Air Chamber (Type-30): Larger chamber diameter provides greater shoe force compared to
the 281 Air Chamber.
- Air Chamber Brackets: 467H (3/4 in. / 19 mm), 467F (5 1/2 in. / 140 mm)
- Thimbles: 271B (4 3/8 in. / 111 mm), 271C (5 1/2 in. / 140 mm)
- 438 Drawbar Guides: Helps guide drawbar eye into coupling.
- 14011 Wear Gage (2 in.): To determine hook wear limits.
- 14026 Latch Gage: To determine latch gap limit.
ACCESSORIES
PARTS
Parts Included with 470A:
- 470 Coupling
- 508 Bolt Kit
- 281 Air Chamber
- 467 Air Chamber Bracket
- 271 Thimble
Coupling only:
- 470 Coupling
- 470H Coupling
Parts Included with 470HA:
- 470H Coupling
- 508 Bolt Kit
- 281 Air Chamber
- 467 Air Chamber Bracket
- 271 Thimble

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Model 470 / 470H Coupling
INSTALLATION
Inspection and Maintenance:
1. Visually inspect the coupling body and latch
components for cracks, impact damage and/
or deformation before each and every use. Do
NOT use if any of these conditions exist.
2. Check the gap between the 472 Latch and the
top of the pintle/hook on the coupling body
before each and every use. Lift up on the
latch to remove any free play and measure the
gap. A gap of 3/8” or more means the coupling
must be taken out of service and repaired or
replaced.
3. If the wear area on the pintle/hook has worn
20% or more from its original cross-section, the
coupling is considered out-of-service and must
NOT be used.
4. Lubrication of the latch components must
be performed at 90-day intervals or sooner
depending on the operating environment.
Lubricate the latch components with a spray-
type lubricant to evenly coat all rotation points.
Rotate each latch component several times to
evenly distribute the lubricant.
5. Remove any excess lubricant with a rag. Do
not apply lubricant to the pintle/hook or saddle
area of the coupling.
6. Never weld on any Premier part in order to
repair damaged or worn areas. Field and/or
shop welds are inadequate and may further
weaken the coupling.
7. WARNING: Other inspection and maintenance
procedures are also required prior to the
operation of combination vehicles. Consult
and follow all Federal Motor Carrier Safety
Regulations as well as local, state and federal
guidelines.
INSPECTION / OPERATION / MAINTENANCE
torque value, or eight other 3/4” grade-8 bolts
and grade-C locknuts. Only use new fasteners
when mounting couplings or drawbar eyes and
torque to SAE specifications. The two longer
(2 3/4”) mounting bolts in the bolt kit are used
for mounting the coupling and air chamber
bracket to the cross member. WARNING:
Never use an air chamber on a Premier
coupling without a 271 series thimble.
7. Once mounted, check the latch components
for proper operation and clearances (see the
Inspection/Operation/Maintenance section for
opening and closing the latch). If the operation
of the latch components is sticky, lubricate
all rotation points with a light penetrating oil.
Work the latch assembly several times to
distribute the lubricant evenly and remove any
excess with a rag. Do not apply lubricant to
the pintle/hook or saddle area of the coupling.
8. Plumb the air line to the 281 Air Chamber
from the vehicle’s emergency side air supply.
NEVER use the service side air supply.
9. WARNING! Keep hands clear of the Coupling
during this test. Activate the emergency side
air supply by releasing the emergency brake
and visually verify that the 279 Shoe fully
rotates toward the pintle.
10. If the 279 Shoe does not move, verify that
the 281 Air Chamber has been connected to
the emergency side air supply and that the
pushrod length is correct.
11. When the emergency side air supply is
removed, the shoe should completely retract.
Please note: The 279 Shoe acts as a shock
absorbing device to help smooth the ride
between vehicles. It is not considered part of
the latching mechanism.
12. An “IMPORTANT WARNINGS!” sticker
was enclosed. This must be attached to the
coupling or cross member and be visible for
the end user to read.

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- Do not weld on any coupling assembly
- Always use Grade-8 fasteners properly torqued
- Do not apply lubricants to the coupling hook
- Air service chamber must be Type-24 or Type-30 with 90-120 PSI
air supply
- Clean & inspect coupling for damage & excessive wear prior to each and
every use
- Lubricate all coupling components at a minimum of 90 day intervals
- Do not bind-up (Jackknife) any application as stresses can cause damage
to products or components, resulting in failure and detachment of the trailer
while in use
IMPORTANT GUIDELINES that apply to all Premier Air Adjusted Couplings
Operation:
OPENING Coupling Latch:
1. While facing the mounted 470/470H Coupling,
grasp the 475 Pin/Handle, which is attached to
the 473 Pawl, and pull outward to the left of the
coupling until motion stops. While holding the
pin/handle in this position, rotate it upward until
the full rotational travel of the pawl is reached.
The pawl is now in the fully open position.
2. Holding the 475 Pin/Handle and 473 Pawl in
place, rotate the 472 Latch upward into the
open position near the underside of the pawl
and hold it.
3. Slowly release the 473 Pawl. The underside
ledge on the pawl will catch the flat front
surface of the 472 Latch, interlocking the two
in the open position. The coupling is now open
and ready to couple or uncouple.
CLOSING Coupling Latch:
4. Grasp the 475 Pin/Handle and rotate the 473
Pawl upward, releasing the 472 Latch.
5. The 472 Latch should rotate freely down until
stopped by the top of the pintle. If it does not
freely rotate down by itself, inspect, clean and
lubricate the rotation point prior to further use
(see the Inspection and Operation section).
6. Rotate the 475 Pin/Handle and 473 Pawl
downward until it engages the 472 Latch at its
matching machined face. Release the handle
and make certain the pawl slides to the right
side, under a ledge on the coupling body and
remains seated with the latch. The 470/470H
Coupling latch is now closed.
7. Verify for proper latching with two tests. First,
grasp the 475 Pin/Handle and attempt to rotate
the 473 Pawl directly up. THE PAWL SHOULD
NOT BE ABLE TO ROTATE! Second, apply
an upward force to the bottom of the 472 Latch.
There should be minimal movement and the
LATCH SHOULD NOT OPEN! If either test
fails, do not use until it has been repaired or
replaced.
8. This product is designed to be operated within
its free rotation limits. It is the responsibility of
the vehicle designer/end user to ensure that
these limits are not exceeded (do not bind-up/
jackknife).
9. WARNING: Prior to towing, make certain that
adequately rated safety chains have been
properly connected.
INSPECTION / OPERATION / MAINTENANCE
Model 470 / 470H Coupling

(1) VERIFY THAT BOTH COUPLING’S AND
DRAWBAR EYE’S RATED CAPACITIES MEET
YOUR APPLICATION(S) REQUIREMENTS.
(2) DO NOT OVERLOAD COUPLING OR DRAWBAR
EYE.
(3) INSPECT COUPLING, LATCH AND DRAWBAR
EYE FOR CRACKS, BENDING DAMAGE OR
EXCESSIVE WEAR. DO NOT USE IF ANY OF
THESE CONDITIONS EXIST!
(4) CHECK FOR GAP BETWEEN CLOSED LATCH
AND TOP OF HORN OR COUPLING BALL.
DO NOT USE IF GAP IS 3/8 IN. OR MORE.
(5) MAKE SURE COUPLING IS LATCHED AND THAT
LATCH WILL NOT OPEN.
(6) PRIOR TO USE, ALWAYS CONNECT SAFETY
CHAINS OF ADEQUATE STRENGTH FOR
LOAD(S) BEING TOWED.
(7) DO NOT BIND-UP (JACKKNIFE) ANY
APPLICATION AS STRESSES CAN CAUSE
DAMAGE TO THE COUPLING, DRAWBAR EYE,
OTHER COMPONENTS OR ANY COMBINATION
OF THEM. JACKKNIFING MAY RESULT IN
FAILURE OF PRODUCTS OR COMPONENTS,
RESULTING IN DETACHMENT OF THE TRAILER
WHILE IN USE.
(8) DO NOT APPLY LUBRICANTS TO THE COUPLING
HOOK OR DRAWBAR EYE LOOP, AS THEY
CAN COVER UP POSSIBLE DAMAGE AND
ACCELERATE WEAR.
(9) ALWAYS ABIDE BY ALL APPLICABLE STATE AND
FEDERAL REGULATIONS GOVERNING SAFE
AND PROPER TRANSPORTATION.
(10) NEVER STRIKE ANY OF THESE COMPONENTS
WITH A HAMMER OR ANY OTHER DEVICE.
(11) ALWAYS VERIFY PROPER OPERATION
OF LATCHING SYSTEM AND COUPLING
COMPONENTS PRIOR TO DRIVE OFF.
(12) NEVER USE A COUPLING THAT YOU DO NOT
FULLY UNDERSTAND HOW TO PROPERLY
OPERATE AND VERIFY SECURE LATCHING OF.
(13) NEVER REPLACE ANY PART IN ANY OF
PREMIER’S ASSEMBLIES WITH NON-PREMIER
COMPONENTS. DOING SO WILL VOID ALL
WARRANTY AND POTENTIALLY COMPROMISE
THE UNIT’S INTEGRITY, WHICH COULD RESULT
IN PROPERTY DAMAGE, SERIOUS INJURY, OR
DEATH.
ATTENTION !
End Users must read and follow this information.
DISTRIBUTORS & OEM’S: Please ensure that your customers
are made aware of the following information on this page.
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WARRANTY: We warrant all Premier products to be free from defects in material or workmanship for one year. We
will repair or replace, at our option, any Premier product which our examination reveals to be defective, provided
that the product is returned to our factory, at Tualatin, Oregon transportation prepaid, within one year of purchase
by the first retail purchaser. Our warranty does not extend to products which have been subject to misuse, neglect,
improper installation, maintenance or application, nor does our warranty extend to products which have been
repaired or altered outside of Premier’s facility unless the repair or alteration has been expressly authorized in
writing by Premier. This warranty is in lieu of all other warranties, express or implied, and excludes
warranties of merchantability, fitness for a particular purpose and otherwise, and in no event will Premier
be liable for incidental, special, contingent or consequential damages.
DISCLAIMER: Although great care has been taken to ensure accurate information throughout this document,
Premier Manufacturing Company must reserve the right to alter any information contained within. These changes
include but are not limited to: Dimensional changes, load capacity and availability of any part or assembly.
© 2009 Premier Manufacturing Company
All rights reserved. Any reproduction of the photographic images or any other portion of this document, including but not limited to the photocopying, or retention and/or storage
in a retrieval system of any kind, is strictly prohibited without prior express written permission from Premier Manufacturing Company.
WARNING!
This envelope contains important
instructions AND MUST REMAIN
ATTACHED TO THIS COUPLING.
It may be removed only by the End
User or by an Original Equipment
Manufacturer who preserves this
envelope and instructions and
provides it to the end user.
premier manufacturing company
THE FIRST NAME IN QUALITY COUPLINGS
800-255-5387 [phone]
www.premier-mfg.com
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Revised: 06/10
Model 470 / 470H Coupling
Installation, etc.