Milwaukee 7150-21 manual Disassembly, Re-Assembly

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Disassembly:

BULLETIN NO. 54-43-0060 Mar. 2008 PAGE 2 OF 2

1, 2

Remove hex bolts (1) from top cap (2) using a 4mm hex key.

2, 4, 5, 6, 7

Remove valve assembly 4, 5, 6, and 7 from top cap (2) using a flat blade screwdriver.

11, 12

Remove press ring (11) from top of cylinder (12) prior to removing driver/cylinder assemblies.

8, 9, 10, 12, 13, 14, 15, Remove driver assembly (8, 9, 10), and cylinder assembly (12, 13, 14, and 17), from tool body (36) at the same time

16, 17, 36by placing two flat blade screwdrivers under ring of cylinder (12) 180° apart, and gently prying the cylinder from the tool body.

Note: Valve bumper (17) may stay in cylinder (12) or remain in tool body (36).

15, 16, 36

Remove cylinder spacer (15) and o-ring (16) from tool body (36) by placing a flat blade screwdriver under spacer (15) and

 

gently lifting spacer assembly out of the tool body (36).

57, 70, 88, 91

Remove magazine B (70) from magazine A (57) by removing screw/washer (88, 91).

29, 30, 31, 32, 33, 35, 36, Remove selector assembly (29, 30, 33, 35), and trigger assembly (31,32) from tool body (36) by placing a 3/32 in. (2.5

mm)punch inside half-moon slot of retainer (33) and gently tapping shaft of selector (29) to separate retainer (33) from shaft (29). Remove spring (30), retainer (33) ring (35), spring, (31) and trigger (32) from tool body.

21, 22 23, 24, 25, 26, 27, Remove trigger valve plunger cap (28) from tool body (36) using an 8 mm wrench, and remove remaining trigger valve

28, 36

components (21-27).

20, 41, 42, 48

Remove belt clip (41) from end cap (42) by removing bolts (48) and loosening set screw (20) only a few turns

 

counterclockwise.

42, 45

Remove deflector (45) from end cap (42) using a flat blade screwdriver. Note: Using excessive force will damage or

 

destroy deflector.

Re-Assembly:

21, 22, 23, 24, 25, 26, 27, Reinstall trigger valve assembly components (21-28) into tool body (36) in order shown. Thread assembly into tool body

28, 36(36) by hand a couple of turns to insure external threads on trigger valve plunger cap (28) properly engage with internal threads inside tool body (36). Secure assembly using an 8 mm wrench.

24, 29, 30, 31, 32, 33, 35, Reinstall selection lever assembly (29, 30, 33, 35) and trigger assembly (31 and 32) by doing the following.

 

•Place spring (30) onto shaft of selection lever (29).

 

•Position spring (31) and trigger (32) over plunger of trigger valve assembly (24).

 

•Insert selection lever assembly (29 and 30) into tool body (36) and align half-moon slot of retainer (33) with half-

 

moon shaft of selection lever (29) and snap retainer assembly (33 and 35) onto the shaft.

9, 36

Install flat side of driver guide (9) towards front of tool body (36).

12, 14

Reinstall cylinder ring (14) onto cylinder (12) with large flanged end facing the top of cylinder (12).

8, 9, 10, 12, 13, 14, 15, Reassemble driver assembly (8, 9, 10), and cylinder assembly (12, 13, and 14) and combine the two together. Set aside.

16, 17, 36Install cylinder spacer assembly (15, 16) and valve bumper (17) into tool body (36). Install assembly into tool body. Note: Flat side of driver assembly (9) must face front of tool body (36).

6, 14, 19

Reinstall press ring (11) onto top of cylinder (12) with wide edge facing toward top cap (2).

2, 4, 5, 6, 7

Reinstall valve collar (4) into internal bore of top cap (2). Place upper valve spring (5) into center of valve collar (4) and push

 

head valve piston assembly (6 and 7) into top cap, applying sufficient pressure to insure seal and collar fit into position

 

inside top cap (2).

1, 2, 3, 36

Reinstall top cap assembly (2, 3, 4, 5, 6, and 7) onto tool body (36) using hex bolts (1).

 

Note: To properly seat top cap, tighten the screws at alternating corners a few turns at a time until all screws are secure.

57, 70, 88, 91

Reinstall magazine B (70) into magazine A (57) and install screw/washer (88, 91)

39, 42

Install smooth side of filter (39) toward end cap (42).

20, 41, 42, 48

Reassemble belt clip (41) onto end cap (42) and tighten set screw (20) until flush with the top thread of the clip. Install

 

bolts (48).

Apply Blue Loctite® 242 to fastener threads (1), (44), (50), (58), (84) and (87).

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Contents Milwaukee Electric Tool Corporation Description of PartExample NO. REQ Description of PartLubrication Description of Part NO. REQRe-Assembly Disassembly