Milwaukee Nail Gun 7120 21 User Manual

PAGE 1 OF 2  
BULLETIN NO.  
54-43-0030  
SERVICE PARTS LIST  
REVISED BULLETIN  
DATE  
SPECIFY CATALOG NO. AND SERIAL NO. WHEN ORDERING PARTS  
Mar. 2006  
COIL ROOFING NAILER  
WIRING INSTRUCTION  
STARTING  
CATALOG NO. 7120-21  
A87A  
SERIAL NUMBER  
49  
48  
1
4
47  
46  
45  
EXAMPLE:  
2
00  
Component Parts  
(Small #) Are Included  
When Ordering The  
Assembly (Large #).  
0
44  
16  
17  
3
5
106  
41  
26  
27  
28  
29  
30  
31  
32  
33  
34  
35  
38  
18  
19  
40  
39  
26 27 28 29 30 31  
111  
37  
42  
32 33 34 35 36 44  
36  
6
43  
37  
7
82  
83  
84  
FIG.  
PART NO.  
DESCRIPTION OF PART  
Cylinder Spacer  
O-Ring  
Cylinder Ring  
Bumper  
O-Ring  
NO. REQ.  
20  
21  
22 45-36-1655  
23 34-40-3200  
24 44-90-0805  
25 42-38-0315  
26 34-40-3295  
27 34-40-3300  
28 42-52-0410  
29 44-70-0250  
30 34-40-3285  
31 34-40-3280  
32 40-50-3195  
33 44-70-0255  
34 34-40-3290  
35 43-64-0150  
36 06-65-1465  
37 06-65-1440  
38 06-65-1425  
39 31-92-0200  
40 40-50-3160  
41 44-86-0710  
42 44-10-0650  
43 40-50-3095  
44 44-90-0825  
45 28-50-0805  
46 44-90-0750  
47 43-31-0370  
48 42-92-1355  
49 34-40-3250  
50 30-61-0200  
51 34-40-3165  
52 34-40-3265  
53 44-55-0250  
54 05-84-0915  
55 44-62-0260  
56 44-60-1905  
82 43-56-0865  
83 06-65-1405  
84 40-50-3050  
85 42-36-1970  
86 43-98-0755  
87 42-92-1500  
88 44-94-0580  
89 34-40-3170  
90 42-36-1985  
91 44-90-0770  
92 42-36-1960  
93 05-85-0050  
1
1
1
1
1
1
1
1
2
1
1
1
2
1
2
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
4
1
1
1
1
1
1
1
1
1
1
1
1
1
2
85  
86  
8
9
O-Ring  
Plunger Cap  
Valve Plunger  
O-Ring  
O-Ring  
Spring  
Trigger Valve Plunger  
O-Ring  
Trigger Valve Head  
Spring Pin  
Spring Pin  
Spring Pin  
Trigger Assembly  
Spring  
Retainer  
Selector  
Selector Spring  
Ring  
Tool Body  
Retaining Ring  
Filter  
End Cap  
O-Ring  
22  
23  
10  
11  
87  
88  
89  
12  
90  
91  
24  
25  
13  
14  
15  
92  
93  
FIG.  
PART NO.  
DESCRIPTION OF PART  
Deflector Bolt  
Deflector  
Muffler  
Deflector Pad  
Socket Hex Head Screw  
Wear Plate  
Wear Pad  
Top Cap  
Seal  
Upper Valve Spring  
O-Ring  
Head Valve Piston  
O-Ring  
Valve Collar  
Seal  
Press Ring  
Piston Ring  
O-Ring  
NO. REQ.  
Nose Piece  
O-Ring  
O-Ring  
1
2
3
4
5
6
7
8
9
05-84-0805  
31-05-0400  
43-31-0355  
45-88-1720  
05-84-0925  
44-66-1355  
42-38-0370  
42-92-1425  
45-06-0945  
1
1
1
1
5
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Feed Finger  
Bolt Assembly  
Feed Piston  
Feed Piston Pin  
Work Contact Element Guide  
Spring Pin  
Adjustment Spring  
Contact Bracket B  
Depth Adjustment Knob  
Work Contact Element Cover  
Adjustment Rod Assembly  
O-Ring  
10 40-50-3120  
11 34-40-3195  
12 44-62-0265  
13 34-40-3245  
14 42-76-0815  
15 45-06-0915  
16 44-90-0700  
17 44-90-0730  
18 34-40-3180  
19 43-12-0255  
20 42-98-0355  
21 34-40-3135  
Contact Element Bracket  
E-Ring  
Contact Element Bracket A  
Flat Head Hex Bolt  
Driver Assembly  
Cylinder  
O-Ring  
MILWAUKEE ELECTRIC TOOL CORPORATION  
13135 W. Lisbon Road, Brookfield, WI 53005  
Drwg.2  
 
BULLETIN NO. 54-43-0030 Mar. 2006  
PAGE 2 OF 2  
Disassembly:  
1, 2, 3, 4, 8  
Remove bolt (1) from top cap (8) using a 4 mm hex key and remove assembly (2, 3, 4)  
Remove four screws (5) from top cap (8) using a 4 mm hex key.  
5, 8  
8, 9, 10, 11, 12,  
13, 14  
Using a 1/8 in. punch, gently push valve assembly (9, 10, 11, 12, 13, and 14) out of top cap (8) through the holes in the cover.  
16, 17, 18, 19, 20,  
21, 22, 23, 24,  
25, 45  
Remove press ring (16) from top of cylinder (20), turn tool body (45) over and tap outside edge of tool body against a piece of  
wood to separate assembly (17-25) from tool body.  
20, 22, 23, 24  
Remove cylinder ring (24) from cylinder (20) prior to removing cylinder spacer assembly (22, 23).  
45,50,79, 106,112  
Remove screw (106) and washer (79) from tool body (45) to lift magazine coil assembly (112) off nose piece (50).  
37, 38, 39, 40, 41,  
42, 43, 44, 45, 111  
Remove trigger valve assembly (111) from tool body (45) by placing a 3/32 in. (2.5mm) punch inside half-moon slot of retainer  
(41) and gently tapping shaft of selector (42). Remove spring (43), retainer (41), and ring (44). Remove trigger and spring (39,40)  
from tool body and push pins (37, 38) out of tool body (45) just far enough to remove valve assembly. Note: Once pins (37, 38)  
have been moved, trigger valve assembly (111) can be gently pushed out of the tool body from the inside handle area of the  
tool body using a flat blade screwdriver.  
Note: Use service fixture #61-60-0005 to move spring pins (42, 43), or use a 1/8" punch.  
Reassembly:  
50, 63, 64  
50, 78, 80  
90, 92, 93  
Apply Blue Loctite®, 242, onto threads of screws (64) prior to installing feed piston cap (63) onto nose assembly (50).  
Apply Blue Loctite® onto threads of screw (80) prior to installing work contact element cover (78) onto nose assembly (50).  
Apply Red Loctite® onto threads of screws (93) when securing contact element bracket (90) to contact element bracket A  
(92).  
37, 38, 45, 111  
Reinstall trigger valve assembly (111) into tool body (45) by aligning the grooves in the valve assembly with the two holes for  
spring pins (37, 38). Drive spring pins into tool body until they are flush with the casting surface.  
Use service fixture #61-60-0005 to reinstall pins (37, 38).  
39, 40, 41, 42, 43,  
44, 45  
Reinstall selection lever assembly (41, 42, 43, 44,) and trigger assembly (39, 40) by doing the following.  
• Place spring (43) onto shaft of selection lever (42)  
• Position spring (40) and trigger (39) over plunger of trigger valve assembly (111)  
• Insert selection lever assembly (42, 43) into tool body (45) and align half-moon slot of retainer (41) with half-moon  
shaft of selection lever (42) and snap retainer assembly (41, 44) onto the shaft  
20, 21, 22, 23  
20, 22, 23, 24  
Install o-ring (21) onto cylinder (20) prior to installing cylinder spacer assembly (22, 23).  
Install cylinder ring (24) onto cylinder (20) only after cylinder ring assembly (22, 23) have been installed.  
Note: Large flanged end of cylinder ring (24) must facing the top of cylinder (20) when installed.  
17, 18, 19, 20, 21,  
22, 23, 24, 25,  
45, 50  
Install preassembled driver assembly (17, 18, and 19) into preassembled cylinder assembly (20, 21, 22, 23, 24, and 25) and  
install assembled components into tool body (45). Note: Orientation of driver assembly (19) must match orientation in nose  
assembly (50).  
8, 16, 20  
2, 6, 7  
47, 48  
1, 8  
Install press ring (16) onto top of cylinder (20) with wide edge facing toward top cap (8).  
Install bumper band pad (7) into bumper band (6) with the word ‘TOPfacing toward deflector (2).  
Install smooth side of filter (47) toward end cap (48).  
Apply Blue Loctite® onto threads of screw (1) if removed from top cap (8).  
 
Lubrication:  
Type I Grease 49-08-7100  
Clean all parts with a dry clean cloth.  
8, 9, 10, 11, 12,  
13, 14,  
Place a thin coating of grease into internal bore of top cap (8), coat parts (9-14) and reassemble in order shown.  
18, 17, 19  
Coat o-ring (18) and piston ring (17) prior to installing into groove of driver assembly (19).  
20, 21, 22, 23, 24  
Coat cylinder o-ring (21), cylinder spacer (22), o-ring (23) and cylinder ring (24) prior to installing onto cylinder (20).  
26, 27 28, 29, 30,  
31, 32, 33, 34,  
35, 36  
Coat all parts of the trigger valve assembly if being replaced individually. Components cleaned in any type of solvent or  
water solution will require new lubrication. Note: A new trigger valve assembly will be pre-lubricated and will not require any  
additional lubrication.  
50, 55, 56, 57, 59,  
60, 61, 62  
Place a thin coating of grease into pocket of feed piston located on nose (50). Once pocket area has been coated, coat  
additional components (55, 56, 57, 59, 60, 61, and 62).  
 

NEC Personal Computer 5800 1000 User Manual
NETGEAR Switch GS108PE 100NAS User Manual
Network Technologies Switch FES 1800 User Manual
Nokia Headphones BH 106 User Manual
Northern Industrial Tools Impact Driver 150611 User Manual
Oki Computer Drive 70043501 User Manual
Oki Printer PAGE 8Z User Manual
Olivetti Copier 120D User Manual
Panasonic All in One Printer KX FLB803HK User Manual
ParaBody Home Gym 454 User Manual