Barrel Replacement - Remington 490 Operating Instructions Manual

Barrel Replacement

WARNING: Never disassemble, replace barrel, clean,
WARNING ICON G 001
or assemble a powder actuated tool while it is loaded.
A
1. Remove front screw (A).
Slide barrel assembly (B)
from receiver (C). Remove
pressure pad assembly (D).
E
2. If tool has been overdriven, tap piston (E) on a hard
surface until the piston is pushed back into the muzzle.
Inspect the barrel assembly (B) and replace if damaged.
3. To assembly, push piston
all the way into the barrel.
Slide the barrel assembly
into the receiver. Turn bar-
rel to line up slot (F) with
front screw hole (A).
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REMINGTON
489-43
B
489-46
489-48
B
D
F
17
C
REMINGTON
REMINGTON
489-45
489-47
REMINGTON
489-49
A
489-50
Continued
48