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H7665 21° Round Head Framing Nailer

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H7665 21° Round Head Framing Nailer

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H7665 PARTS LIST 

REF PART #

DESCRIPTION

REF PART #

DESCRIPTION

1

PSB11M

CAP SCREW M8-1.25 X 16

49

PH7665049 DEPTH ADJUSTMENT NUT

2

PH7665002 AIR DEFLECTOR

50

PH7665050 COPPER COLLAR

3

PH7665003 DEFLECTOR RUBBER

51

PH7665051 SAFETY NOSE CASE

4

PH7665004 COMPRESSION SPRING 

52

PH7665052 O-RING 61.5 X 1.8

5

PH7665005 SPRING WIRE

53

PH7665053 DRIVE GUIDE

6

PSB06M

CAP SCREW M6-1 X 25

54

PLW04M

LOCK WASHER 8MM

7

PLW03M

LOCK WASHER 6MM

55

PSB13M

CAP SCREW M8-1.25 X 30

8

PH7665008 CYLINDER CORE

56

PEC16M

E-CLIP 2.5MM

9

P04510421 CAP SCREW M5-.8 X 5

57

PH7665057 PIN

10

PH7665010 CYLINDER COVER

58

PSB26M

CAP SCREW M6-1 X 12

11

PH7665011 HEAD VALVE PISTON

59

PW03M

FLAT WASHER 6MM

12

PH7665012 SPRING SEAT

60

PH7665060 PLATE

13

PH7665013 COMPRESSION SPRING 

61

PH7665061 MAGAZINE

14

PH7665014 SPRING WASHER

62

PH7665062 WASHER CASE

15

PH7665015 COLLAR

63

PH7665063 DRIVE NAIL BAR

16

PH7665016 O-RING 42.3 X 5

64

PH7665064 SPACER

17

PH7665017 MAIN PISTON

65

PSB125M

CAP SCREW M3-.5 X 5

18

PH7665018 O-RING 57.5 X 3

66

PH7665066 PUSHER

19

PH7665019 O-RING 88 X 3

67

PH7665067 TORSION SPRING

20

PH7665020 FIXED RING

68

PH7665068 SPRING CORE

21

PH7665021 SEALING RING

69

PH7665069 PIN B4 X 25

22

PH7665022 CYLINDER

70

PSB17M

CAP SCREW M4-.7 X 10

23

PH7665023 BUMPER OUTER LANE 

71

PW05M

FLAT WASHER 4MM

24

PH7665024 BUMPER

72

PN04M

HEX NUT M4-.7

25

PH7665025 CYLINDER WASHER

73

PH7665073 RELEASE LATCH

26

PH7665026 GUN BODY

74

PH7665074 LATCH SPRING

27

PH7665027 TRIGGER VALVE SEAT

75

PSB140M

CAP SCREW M4-.7 X 45

28

PH7665028 O-RING 15 X 2.65

76

PH7665076 SAFETY PIPE

29

PH7665029 O-RING 17 X 1.5

77

PH7665077 SAFETY PIPE CASE

30

PH7665030 TRIGGER VALVE GUIDE

78

PSB20M

CAP SCREW M5-.8 X 14

31

PH7665031 O-RING 6.2 X 1.8

79

PH7665079 FIXED SEAT

32

PH7665032 O-RING 6.4 X 2

80

PW02M

FLAT WASHER 5MM

33

PH7665033 O-RING 9 X 1.8

81

PN06M

HEX NUT M5-.8

34

PH7665034 SWITCH SPRING

82

PSB38M

CAP SCREW M5-.8 X 25

35

PH7665035 SWITCH PIPE

83

PH7665083 RUBBER HANDLE CASE

36

PH7665036 O-RING 2.5 X 1.5

84

PH7665084 END CAP WASHER

37

PH7665037 O-RING 20.3 X 2.3

85

PH7665085 END CAP

38

PH7665038 SWITCH SEAT

86

PW02M

FLAT WASHER 5MM

39

PRP16M

ROLL PIN 3 X 25

87

PSB15M

CAP SCREW M5-.8 X 20

40

PH7665040 TRIGGER

88

PH7665088 AIR PLUG 1/4" NPT MALE

41

PH7665041 SAFETY SPACER

89

PH7665089 AIR PLUG DUST CAP

42

PRP02M

ROLL PIN 3 X 16

90

PH7665090 CARRYING CASE

43

PH7665043 SAFETY GUIDE

91

PAW03M

HEX WRENCH 3MM

44

PH7665044 COMPRESSION SPRING

92

PAW04M

HEX WRENCH 4MM

45

PH7665045 SAFETY YOKE

93

PAW05M

HEX WRENCH 5MM

46

PSB03M

CAP SCREW M5-.8 X 8

94

PAW06M

HEX WRENCH 6MM

47

PW02M

FLAT WASHER 5MM

95

PH7665095 PISTON REPAIR KIT*

48

PH7665048 SAFETY NOSE

*

ITEM NOT SHOWN ON BREAKDOWN

TROUBLESHOOTING

Symptom

Possible Cause

Solution

Air leaking at trig-
ger valve area.

1. O-rings in trigger valve hous-

ing are damaged.

1. O-rings must be replaced 

& operation of safety nose 
must be checked.

Air leaking between 
housing and hose.

1. Loose screws in housing.
2. Damaged O-ring.
3. Loose air fitting.

1. Tighten screws.
2. Replace O-ring.
3. Tighten air fitting & use tef-

lon tape.

Air leaking between 
housing and cap 
assembly.

1. Damaged seal.

1. Replace damaged seals.

Tool skips nails 
while discharging.

1. Air leaks.
2. Dirt in nose.
3. Dirt or damage prevents nails 

from moving freely in maga-
zine.

4. Inadequate air flow to tool.

5. Worn O-ring on piston or lack 

of lubrication.

6. Damaged O-rings on trigger 

valve.

7. Worn bumper.
8. Cap seal leaking.

1. Tighten screws and fittings.
2. Clean nose.
3. Clean magazine and 

inspect/repair damage.

4. Check fitting, hose, com-

pressor & air pressure.

5. Replace piston O-ring. 

Lubricate.

6. Replace trigger valve O-

rings.

7. Replace bumper.
8. Replace cap seal.

Tool runs slowly 
or has a loss of 
power.

1. Nailer is not sufficiently lubri-

cated.

2. Broken spring in cap assem-

bly.

3. Exhaust port in cap is blocked.

1. Lubricate nailer.

2. Replace spring.

3. Clean or replace damaged 

internal parts.

Fasteners frequent-
ly jam the nailer.

1. Nails are the wrong size.
2. Nails are bent or dirty.

3. Magazine or nose screws are 

loose.

4. Driver or driver guide are worn 

or damaged.

5. Nails are wrong angle.

1. Use correct nails.
2. Use undamaged, clean 

nails.

3. Tighten magazine.

4. Replace worn or damaged 

parts.

5. Use correct angle nails.

Nailer does not fire. 1. Nail is jammed in magazine or 

discharge area.

2. Piston shaft is damaged.
3. Air pressure too low.

1. Clear nailer magazine or 

discharge area.

2. Replace piston shaft.
3. Check/increase air pres-

sure.

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