Craftsman 351.181820 Operator's Manual page 6

SYMPTOM POSSIBLE CAUSE(S) CORRECTIVE ACTION
Trigger cap leaks air 1. O-ring damaged 1. Check and replace damaged O-ring (Fig. 10, No. 23)
2. Valve stem, seal or O-rings damaged 2. Check and replace damaged stem, seal or O-rings
(Fig. 10, Nos. 18, 20, 21 and 23)
Cap leaks air 1. 1. Tighten bolts (Fig. 10, No. 2)
2. Check and replace damaged gasket (Fig. 10, No. 5)
Nose leaks air 1. Check and replace damaged O-ring (Fig. 10, No. 15)
2. Check and replace damaged bumper (Fig. 10, No. 16)
3. Check and replace guide (Fig. 10, No. 17)
Tool will not operate
Tool operates slowly
or loses power
Tool skips fasteners or
inconsistent operation
1.
2.
Cap bolts loose
Damaged gasket 2.
Damaged cylinder O-ring 1.
Damaged bumper 2.
Ram guide damaged 3.
Insufficient air supply 1.
Damaged or worn head valve O-ring 2.
or seal
3. Damaged head valve spring
4. Head valve binding in cap
1. Damaged head valve spring
2. Damaged or worn O-rings
3. Damaged trigger assembly
4. Build-up on ram
5. Cylinder not sealed on bumper
properly
6. Insufficient air supply
7. Head valve poorly lubricated
1. Worn or damaged bumper
2. Build-up on ram
3. Insufficient air supply
4. Damaged or worn piston O-ring
5. Damaged magazine spring
6. Magazine-nose bolts loose
7. Fasteners too short
8. Damaged fasteners
9. Incorrect fastener size
10. Cap leaks
11. Damaged trigger valve seal and
O-rings
12. Bent or damaged ram
13. Dirty magazine
14. Damaged or worn magazine
3.
4.
Check air supply
Replace damaged or worn O-ring or seal
(Fig. 10, Nos. 6 and 10)
Replace damaged spring (Fig. 10, No. 7)
Clean and grease cap and head valve
(Fig. 10, Nos. 4 and 9)
1. Check and replace damaged spring (Fig. 10, No. 7)
2. Check and replace damaged or worn O-rings
3. Check and replace trigger assembly
4. Clean piston/ram assembly (Fig. 10, No. 12)
5. Disassemble cylinder and assemble properly
6. Check air supply
7. Disassemble head valve (Fig. 10, No. 9),
clean, grease, and assemble properly
1. Check and replace bumper (Fig. 10, No. 16)
2. Clean and grease piston/ram assembly
(Fig. 10, No. 12)
3. Check air supply
4. Check and replace O-ring (Fig. 10, No. 13)
5. Check and replace springs (Fig. 10, No. 51)
6. Align nose with magazine and tighten bolts
(Fig. 10, No. 34)
7. Use Sears recommended fasteners only
8. Discard damaged fasteners
9. Use Sears recommended fasteners only
10. Tighten cap bolts (Fig. 10, No. 2). Check and replace
damaged gasket (Fig. 10, No. 5)
11. Check and replace damaged seal and O-rings
(Fig. 10, Nos. 18, 21 and 23)
12. Check and replace damaged piston/ram assembly
(Fig. 10, No. 12)
13. Clean magazine and lubricate with a
dry, film lubricant.
14. Check and replace magazine (Fig. 10, No. 39)
6