Remington 490 User Manual Page 19

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19
101274
Tool Disassembly
And Assembly
TOOL DISASSEMBLY
1. Remove screw (G) from recoil pad (H). Lift pad away from
handle. Separate housing halves by removing the seven
housing screws (I & J).
2. Remove receiver (C), firing pin (K), firing pin spring (L),
sheet metal nut (M), trigger link (N), link pin (O), sear (P),
and trigger (R).
3. Push barrel assembly (B) into receiver (C). Remove screw
(S) from receiver. Remove front screw (A), pressure pad
assembly (D), barrel assembly (B), breech (T), and breech
spring (U).
4. Clean your tool after each days use by using a penetrating
lubricant such as “WD-40” sparingly and wipe dry. Brushes
are available through your distributor to aid in cleaning.
TOOL ASSEMBLY
1. Push the piston (E) all the way into the barrel (B). Insert
breech spring (U), the breech (T) and barrel assembly (B)
into the receiver (C). Make sure the breech slot (V) in the
breech (T) is aligned with the hole for breech screw (S).
2. Push the barrel assembly (B) forward until the breech slot
(V) is visible through the hole for breech screw (S). Insert
and tighten breech screw (S). Align barrel slot (F) with hole
for front screw (A). Insert and tighten front screw (A). Insert
and tighten pressure pad assembly (D).
3. Insert link pin (O) into housing half. Assemble sear spring
(Q) in pocket of breech (T). Insert sear (P) into breech with
solid leg facing forward and keyhole leg down. Assemble
small end of firing pin spring (L) onto end of firing pin (K)
and insert into rear of receiver (C).
4. Place breech end of receiver into housing. Assemble
trigger link (N) on link pin (O) with angled end of trigger link
up over sear (P).
5. Assemble trigger (R) into housing half. Insert sheet metal
nut (M) into housing pocket with hollow side towards grip.
Assemble housing halves.
6. Insert short screws (I) into handle bottom. Longer screws
(J) into remaining holes in side of housing. Tighten uni-
formly.
7. Assemble upper part of recoil pad (H) into housing. Insert
screw (G) into lower part of recoil pad (H) and tighten.
8. Test tool without powder load by depressing barrel against
work surface, pulling trigger, and releasing tool. Test
several times to insure that the firing mechanism operates
freely.
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