Heckler And Koch HK G3 Maintenance Instructions

							G3 Armorer’s Manual___________________________________________________________________________HECKLER & KOCH, INC. 
 
 
                                                   Maintenance Instructions                                                        28 
HECKLER & KOCH 
 OBERNDORF/NECKAR 
Maintenance 
Instructions
 
Part: 
 
Retractable butt stock Weapon: 
 
G3 
Designation of operation (s): 
 
Replacing the recoil spring 
(Spare parts set for back plate) 
Description of operation (s): 
 
¾  Punch out rivets (4) of the recoil spring guide rod 
¾  Remove stop pin (1), recoil spring guide ring (2) and recoil spring (3). 
¾  Slide new recoil spring with guide ring onto recoil spring guide rod. 
¾  Insert back plate (5) in the assembly fixture. 
¾  Slide compression tube onto recoil spring guide rod and clamp compression tube. 
¾  Fit stop pin and both rivets into recoil spring guide rod. 
¾  Swivel down recoil spring guide rod so that it comes to rest on center points and punch-in 
the rivets. 
 
  
 
 Tools: 
Assembly fixture 1013-40.09 V7 
Hammer 
Pin punch dia. 3.5, Center punch dia. 10 
Gauges: 
 
 
Auxiliaries: 
 
Sheet No.: 
 
9.2 
  
						

							G3 Armorer’s Manual___________________________________________________________________________HECKLER & KOCH, INC. 
 
 
                                                   Maintenance Instructions                                                        29 
HECKLER & KOCH 
 OBERNDORF/NECKAR 
Maintenance 
Instructions
 
Part: 
 
Retractable butt stock Weapon: 
 
G3 
Designation of operation (s): 
 
Replacing the recoil spring 
Assembling the retractable butt stock 
Description of operation (s): 
 
Assembling the retractable butt stock. 
¾  Slide protective cover (3) onto butt stock (7). 
¾  Insert gripping lever (2) in the recesses of the guide rails and push butt stock to half length 
into the back plate. 
¾  Press protective cover into the back plate. 
¾  Attach clamping lever (4) to the buffer housing so that the two lugs engage properly in the 
gripping lever. 
¾  Insert locking ring (5) so that the end of the tension spring engages in the bore of the 
locking ring. 
¾  Insert snap ring (6). 
 
Pre-tensioning the spring in the clamping lever 
Retract butt stock all the way up to stop. 
Swivel clamping lever to the left. 
Swivel back clamping lever all the way to stop. 
Press ratchet into the notch of the locking ring and swivel back clamping lever. 
 
Repeat this process until clamping lever is under spring tension. 
  
 
 Tools: 
 
 
Gauges: 
 
 
Auxiliaries: 
 Sheet No.: 
 
9.3  
						

							 
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                                                                                             Section 2 Spare Parts                                                                                          32 HECKLER & KOCH 
 
OBERNDORF/NECKAR
 G3 Rifle Spare Parts 
Version:  Fixed butt stock  
Page 32 
Item  Parts Designation  Part No.  Ident. No. 
Qty of parts 
Per 100 
arms/devices
 Remarks 
1 2  3 4 5 7 1 Barrel with receiver, cocking lever housing and 
magazine release lever 100229/5-1111.491/1  206 731  3  Marking acc. To contract 2  Flash hider, complete  1013-101.100  200 368  3   3  Rotary rear sight  100229/5-101.05  206 495  2   4  Spare parts set to rotary rear sight, comprising:  St 1013-300  200 988  5   5    Clamping screw  1013-101.29  200 372  10   6    Windage adjusting screw  1013-101.30  200 384     7    Washer  1013-101.28  200 371     8    Toothed lock washer  A 5,3 DIN 6798  922 617     9    Compression spring for ball catch  x2  1013-101.09  200 383     10    Balls  x2  3 III-6 DIN 5401  929 897     11  Cap, complete  100229/5-01.14  206 497  2   12  Magazine catch, complete  1013-01.20/1  205 618  5   13  Compression spring for magazine catch  1013-01.25  200 393  20   14  Contact piece for magazine catch  1013-01.26  200 394  5   15  Push button for magazine catch  1013-01.27  200 396  5   16  Clamping sleeve  2,5 x 10 DIN 1481  922 608  30   17  Cocking lever  100229-01.43  224 886  5   18  Cocking lever support  1013-01.36  200 402  5   19  Cocking lever elbow spring  1013-01.42  200 404  10   20  Cocking lever axle  1013-01.37  200 403  20   21  Front sight  1013-101.51  200 415  5   22  Clamping sleeve  4 x 12 DIN 1481  922 609  20   23  Locking piece  1013-02.01  200 439  3   24  Firing ping  1013-02.04  200 440  5   
 
  
						

							 
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                                                                                             Section 2 Spare Parts                                                                                          34 HECKLER & KOCH 
 
OBERNDORF/NECKAR
 G3 Rifle Spare Parts 
Version:  Fixed butt stock  
Page 34 
Item  Parts Designation  Part No.  Ident. No. 
Qty of parts 
Per 100 
arms/devices
 Remarks 
1 2  3 4 5 7 25  Firing pin spring  1013-02.05  200 441  5   26  Bolt head, complete  1013-02.06  200 442  3   27 Extractor  1013-02.08  200 444  10   28  Extractor spring  1013-02.09  200 445  10   29  Locking roller  1013-01.100  200 447  10  Oversize 0,02 mm 30  Holder for locking rollers  1013-02.11  200 449  5   31  Clamping sleeve 2 x 6.9  1013-02.12  200 450  15   32  Bolt head locking lever  1013-02.15  200 452  2   33  Compression spring for bolt head locking lever  1013-02.16  200 453  5   34 Cylindrical pin  1013-02.18  200 454  5   35 Pistol grip      3 Part # acc. to contract 
concerned 36 Grip  1013-03.08  200 462  3   37  Lens head cylindrical screw  M 5 x 10 DIN 85-8G  922 613  10   38  Toothed lock washer  J 5,3 DIN 6797  922 616  20   39  Fire selector lever, complete  1013-03.14/1  205 621  5   40  Trigger housing, complete  100229/5-03.30  206 571  3   41  Locking pin for pistol grip and handguard  1013-03.01  200 459  15   42  Butt stock  100229-041.21  206 577  3   43  Back plate, complete  1013-04.40/1  205 633  3   44 Buffer  1013-04.550  200 555  2   45  Countersunk screw, self-locking  1013-041.31  200 543  30   46  Toothed lock washer  V 5,3 DIN 6798  922 615  50   47  Buffer screw, self-locking  1013-041.17  200 531  3   48  Toothed lock washer  J 8,4 DIN 6798  922 614  50             
 
  
						

							 
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                                                                                             Section 2 Spare Parts                                                                                          36   HECKLER & KOCH 
 
OBERNDORF/NECKAR
 G3 Rifle Spare Parts 
Version:  Fixed butt stock  
Page 36 
Item  Parts Designation  Part No.  Ident. No. 
Qty of parts 
Per 100 
arms/devices
 Remarks 
1 2  3 4 5 7 49  Spring washer  A 8 DIN 127  928 147  10   50  Butt plate  1013-041.12  200 527  2   51  Recoil spring  1013-04.08  200 525  10   52  Spare parts set to pack plate, comprising  St 1013-200  200 992  10 Also applies to retractable butt 
stock 53    Recoil spring stop pin  1013-04.09  200 523     54    Recoil spring guide ring  1013-04.10  200 524     55    2 rivets  1013-04.11  200 526     56  Butt stock locking pin  1013-04.01  200 520  5   57  Hand guard  100229/1-1691.16  205 977  3   58 Magazine  1015-10  205 554  5   59 Sling  100229/1-860  205 638  2    Parts differing from the standard version 
(subject to contract concerned)     70  Bayonet mount  100313  200 768  2  Replaces Item 11, Cap 71  Handguard with mount  100229/2-1691.16  206 263  3 Replace Item 57, but only in 
connection with item 72 72  Multipurpose carrying sling R 3/1  100229/3-800  205 501  2 Only in connection with Item 
71                                                    
						

							 
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