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1-800-255-5387 • www.premier-mfg.com

premier manufacturing company

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THE FIRST NAME IN QUALITY COUPLINGS

270PK SERVICE GUIDELINES

BEFORE GETTING STARTED

:

►  This procedure should only be performed by a 

qualified mechanic.

►  Measure the wear on the coupling’s pintle 

hook.  If the wear is at or exceeds 20% of the 

cross section, the coupling is considered Out of 

Service. Do Not continue.  Premier has Wear 

Gages to determine wear on our Couplings and 

Drawbar Eyes.  

►  Examine the entire coupling body for excessive 

wear or any damage.  If any exists, do Not 

continue, coupling needs to be replaced.

►  Tools required:  snap ring pliers; 1 1/16” socket; 

3/16” Allen wrench.

► 

CAUTION

: When removing and replacing 

snap rings the appropriate snap ring plier tools 

are necessary.  Do not attempt removal or 

replacement without the correct snap ring plier 

tools.  In addition, use caution when removing 

and replacing snap rings – Do not over-expand 

them as damage could result.   Also, when 

assembling a snap ring into position - Make 

certain that the snap ring is fully seated into the 

groove.

►  Safety glasses are required for all of the 

following procedures.

►  See attached Image Reference Section(s) with 

photos and/or drawings to identify various parts. 

►  Prior to disassembly, familiarize yourself with the 

location of all the various parts in the coupling.  

This will assist in the assembly process.

DISASSEMBLY

1)  The 270 Coupling should be positioned upright 

 with the latch in the closed position (see Image 

#2 in the Image Reference Section.)

2)   Locate the 274 Bolt, which resides within the 272 

Latch, and remove the 274A Locknut from the 

right side.  Slide the 274 Bolt out from the left 

side.  Remove the 272 Latch.

3)  Slide the 273 Pawl to the left and rotate it to the 

open position. 

4)  Remove the 273C Set Screw located on the 

underside of the 273 Pawl (see Image #5.)  

5)  Remove the 275-50 Snap Ring from the right 

side of the 275 Pin. 

6)  Slide the 275 Pin out from the left side and then 

remove the 273 Pawl and 273A Spring.  

7) 

IF

 you are replacing the 279 Shoe and its 

components, then follow the instructions below:  

Otherwise, continue on to #8

.

 

A)  Locate the 274 Bolt, which resides within the 

279 Shoe at the bottom of the coupling and 

remove the 274A Locknut from the right side.  

Slide the 274 Bolt out from the left side and 

remove the 279 Shoe and 266 Spring.

8)  With all parts removed from the coupling body, 

clean and inspect the body for wear and/or 

damage.  If wear exists or damage is noted, do 

not attempt to repair. DO NOT ATTEMPT WELD 

REPAIR OF ANY DAMAGED AND/OR WORN 

PART.

DISASSEMBLY IS COMPLETE

IMPORTANT NOTES TO CLEAN, 

INSPECT & LUBRICATE

:

►  Use only genuine PREMIER replacement parts 

on any repairs. Use of other parts, which can 

have different specifications or tolerances, may 

fail to alert you to non-obvious damage to the 

hitch which can lead to hitch failure.

►  All body holes, part holes and pins need to be 

thoroughly cleaned and lubricated with a 

270

Coupling

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