Grizzly H7665, Maintenance And Troubleshooting

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H7665 21° Round Head Framing Nailer -14
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H7665 21° Round Head Framing Nailer -15
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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.