Home > Heckler and Koch > Firearms > Heckler And Koch HK G3 Maintenance Instructions

Heckler And Koch HK G3 Maintenance Instructions

    Download as PDF Print this page Share this page

    Have a look at the manual Heckler And Koch HK G3 Maintenance Instructions online for free. It’s possible to download the document as PDF or print. UserManuals.tech offer 26 Heckler and Koch manuals and user’s guides for free. Share the user manual or guide on Facebook, Twitter or Google+.

    							 
    G3 
    Armorers Manual 
    Instructions for Maintenance and Repair 
    Cal. 7.62 mm x 51 
     
     
     
     
     
      
    						
    							 
    TABLE OF CONTENTS 
    Section 1. Maintenance Instructions…………………………………………………………………….  1 
    Checking the rifle before shooting – Safety engaged, rifle unloaded…………………………………...  1 
    Sighting-in of the rifle…………………………………………………………………………………...  3 
    Adjusting the rear sight………………………………………………………………………………….  4 
    Checking the Head Space……………………………………………………………………………….  5 
    Replacing the flash hider and checking the rifle grenade for its proper seat on the rifle 
    Replacing the cap………………………………………………………………………………………..  6 
    Cleaning the barrel, cocking lever housing and magazine release lever and checking all assemblies 
    and subassemblies for proper seat……………………………………………………………………….  7 
    Removing dents in receiver and cocking lever housing………………………………………………… 8 
    Viewing the bore for powder residues and checking the bore diameter………………………………...  9 
    Checking the rear and front sight, replace, if necessary………………………………………………...  10 
    Checking the cocking device, replace, if necessary……………………………………………………..  11 
    Checking the magazine catch, replace, if necessary…………………………………………………….  12 
    Stripping, cleaning and checking the bolt assembly…………………………………………………….  13 
    Checking the firing pin protrusion……………………………………………………………………… 
    Checking the shape of firing pin 14 
    Checking the extractor protrusion……………………………………………………………………….  15 
    Replacing bolt components……………………………………………………………………………...  16 
    Replacing the locking rollers……………………………………………………………………………  17 
    Replacing the bolt head locking lever…………………………………………………………………...  18 
    Cleaning and checking the grip assembly……………………………………………………………….  19 
    Cleaning and checking back plate and butt stock……………………………………………………….  20 
    Replacing back plate, butt stock and buffer……………………………………………………………..  21 
    Replacing the recoil spring (spare parts set for back plate)……………………………………………..  22 
    Checking the magazine………………………………………………………………………………….  23 
    Checking the magazine housing………………………………………………………………………...  24 
    Checking the handguard………………………………………………………………………………… 25 
    Checking the carrying sling……………………………………………………………………………..  26 
    Stripping the retractable butt stock……………………………………………………………………...  27 
    Replacing the recoil spring (spare parts set for back plate)……………………………………………..  28 
    Assembling the retractable butt stock…………………………………………………………………...  29 
    Section 2. Spare parts……………………………………………………………………………………  30 
    Section 3. Special tools, gauges and fixtures……………………………………………………………  39 
     
    1) These instructions apply to the G3 Rifle with Fixed and Retractable butt stock. 
     
    2) These instructions contain information relating to the car, servicing and field maintenance of the 
    weapon. 
     
    3) Unless otherwise detailed, assembly or fitting of components or component groups is carried out in 
    the reverse order analogue to the relevant stripping or dismantling instructions. 
     
    4) Index number in illustrations and the text are identical to the serial numbers in the spare parts list.  
    						
    							G3 Armorer’s Manual___________________________________________________________________________HECKLER & KOCH, INC. 
     
     
                                                       Maintenance Instructions                                                        1 
    HECKLER & KOCH 
     OBERNDORF/NECKAR 
    Maintenance 
    Instructions
     
    Part: 
     
    Rifle, complete 
    Weapon:
     
    G3 
    Designation of operation (s): 
     
    Checking the rifle before shooting – Safety engaged, rifle unloaded 
     
    Description of operation (s): 
     
    ¾  Check the rifle for cleanness and proper condition. 
    ¾  Check the rifle assemblies for proper seat. 
    ¾  Clean the rifle (see “Technical Description of the G3 Rifle”, Sheet no. 2.2). 
     
     
     
     
     
      
     
     Tools: 
     
     
    Gauges: 
     
     
    Auxiliaries: 
    Weapons cleaning kit, 7.62 mm Sheet 
    No.:
     
     
    1.1 
      
    						
    							G3 Armorer’s Manual___________________________________________________________________________HECKLER & KOCH, INC. 
     
     
                                                       Maintenance Instructions                                                        2 
    HECKLER & KOCH 
     OBERNDORF/NECKAR 
    Maintenance 
    Instructions
     
    Part: 
     
    Rifle, complete Weapon: 
     
    G3 
    Designation of operation (s): 
     
    Checking the rifle before shooting – Safety engaged, rifle unloaded 
    Description of operation (s): 
     
    ¾  Check function of cartridge feed and ejection, trigger mechanism and safety: 
     
    Pull back cocking lever which must smoothly engage in the recess in the cocking lever 
    housing. A friction-free rearward motion of the bolt must be ensured. 
     
    When releasing the cocking lever, a practice cartridge must be properly chambered. 
     
    When pulling back the cocking lever, a practice cartridge must be properly ejected. 
     
    With the safety lever in positions “E” (single fire) and “F” (burst fire) it must be possible to 
    squeeze the trigger and to overcome the let-off pressure without any restriction. 
     
    The safety lever must securely engage the positions “S” (safe); “E” (single fire and “F” 
    (burst fire). 
     
      
     
     Tools: 
     
     
    Gauges: 
     
     
    Auxiliaries: 
    Use practice cartridges or deactivated cartridges Sheet No.: 
     
    1.2 
      
    						
    							G3 Armorer’s Manual___________________________________________________________________________HECKLER & KOCH, INC. 
     
     
                                                       Maintenance Instructions                                                        3 
    HECKLER & KOCH 
     OBERNDORF/NECKAR 
    Maintenance 
    Instructions
     
    Part: 
     
    Rifle, complete Weapon: 
     
    G3 
    Designation of operation (s): 
     
    Sighting-in of the rifle 
    Description of operation (s): 
     
    ¾  Rifle to be sighted-in with the rear sight in position “2” at a range of 100 m. 
    ¾  Rectify point of impact, if necessary. 
    ¾ Elevation adjustment: 
    Insert elevation adjustment tool into the rear sight cylinder so that the wedges of the tool 
    engage the two slots in the cylinder which contain the catch bolts. Press Phillips-head 
    screwdriver downward into the adjustment tool and hold firm. Turn rear sight cylinder 
    manually in the desired direction. Turning clockwise lowers the point of impact 3.3 cm (1.29 
    in.) per click at 100 m (109 yds.), turning counter-clockwise raises is correspondingly. After 
    correction withdraw Phillips-head screwdriver and remove elevation adjustment tool. The 
    catch will then re-engage in the slots. After performing the elevation set the desired 
    aperture again. 
    ¾ Windage adjustment: 
    Point of impact, left:  Loosen clamping screw on top of sight base. Turn adjusting screw on 
    the right side counter-clockwise in accordance with the required correction. Then retighten 
    clamping screw. 
    Point of impact, right:  Loosen clamping screw. Turn adjusting screw clockwise until the 
    required correction has been performed. Then retighten clamping screw. 
     
    Note:  Each revolution of the adjusting screw moves the mean point of impact 13.2 cm 
    (5.19 in.) to the left or right at a range of 100 m (109 yds.). 
      
     
     Tools: 
    Rear sight adjusting tool  1013 W4 
     
    Gauges: 
     
     
    Auxiliaries: 
     Sheet No.: 
     
    1.3 
      
    						
    							G3 Armorer’s Manual___________________________________________________________________________HECKLER & KOCH, INC. 
     
     
                                                       Maintenance Instructions                                                        4 
    HECKLER & KOCH 
     OBERNDORF/NECKAR 
    Maintenance 
    Instructions
     
    Part: 
     
    Rifle, complete Weapon: 
     
    G3 
    Designation of operation (s): 
     
    Adjusting the rear sight 
    Description of operation (s): 
     
    Elevation adjustment 
     
    Loosening the clamping screw  
    Turning the adjusting screw 
     
      
     
     Tools: 
     
     
    Gauges: 
     
     
    Auxiliaries: 
     Sheet No.: 
     
    1.4 
      
    						
    							G3 Armorer’s Manual___________________________________________________________________________HECKLER & KOCH, INC. 
     
     
                                                       Maintenance Instructions                                                        5 
    HECKLER & KOCH 
     OBERNDORF/NECKAR 
    Maintenance 
    Instructions
     
    Part: 
     
    Rifle, complete Weapon: 
     
    G3 
    Designation of operation (s): 
     
    Checking the head space 
    Description of operation (s): 
     
    ¾  Engage safety. Remove magazine. 
    Head space is correct when the gap between bolt head and bolt head carrier amounts to 
    0.1—0.5 mm (0.004—0.020 in.). 
    It may not be possible to introduce the feeler size 0.5. 
     
      
     
     Tools: 
     
     
    Gauges: 
    Feeler gauge  1013 L3 
     
    Auxiliaries: 
     Sheet No.: 
     
    1.5 
      
    						
    							G3 Armorer’s Manual___________________________________________________________________________HECKLER & KOCH, INC. 
     
     
                                                       Maintenance Instructions                                                        6 
    HECKLER & KOCH 
     OBERNDORF/NECKAR 
    Maintenance 
    Instructions
     
    Part: 
     
    Receiver with barrel, cocking 
    lever housing and magazine 
    release lever Weapon: 
     
    G3 
    Designation of operation (s): 
     
    Replacing the flash hider and checking the rifle grenade for its proper seat on the rifle 
    Replacing the cap 
    Description of operation (s): 
     
    ¾  Loosen flash hider (2) by means of the universal spanner and remove. Screw new flash 
    hider onto the barrel and tighten securely. 
    ¾  Slide control gauge over flash hider and spring ring up to limit stop at the front sight holder. 
    ¾  Check flash hider for symmetrical seat as well as spring ring for secure seat on the barrel. 
    ¾  Press in pressure bolt on the right side of the front sight holder and remove cap (11). 
     
     
     
      
     
     Tools: 
    Universal spanner  1013/41 W7 
     
    Gauges: 
    Control gauge  1013-100 L1 
     
    Auxiliaries: 
     Sheet No.: 
     
    2.1 
      
    						
    							G3 Armorer’s Manual___________________________________________________________________________HECKLER & KOCH, INC. 
     
     
                                                       Maintenance Instructions                                                        7 
    HECKLER & KOCH 
     OBERNDORF/NECKAR 
    Maintenance 
    Instructions
     
    Part: 
     
    Receiver with barrel, cocking 
    lever housing and magazine 
    release lever Weapon: 
     
    G3 
    Designation of operation (s): 
     
    Cleaning the barrel, cocking lever housing and magazine release lever and checking all 
    assemblies and subassemblies for proper seat 
    Description of operation (s): 
     
    ¾  Clean and oil receiver, barrel extension and barrel. 
     
    Note:  When cleaning the barrel, the flash hider must be screwed onto the barrel. 
     
     
     
     
      
     
     Tools: 
    Cleaning rod  1013-101.49 W24 
    Chamber cleaning kit  1013 W3/1 
    Gauges: 
     
     
    Auxiliaries: 
    Gun oil, pull-throughs Sheet No.: 
     
    2.2 
      
    						
    All Heckler and Koch manuals Comments (0)

    Related Manuals for Heckler And Koch HK G3 Maintenance Instructions