Remington 494 User Manual download pdf (Page 21)

106084

Buffer and Piston Replacement

WARNING ICON G 001

WARNING: Always unload a powder actuated tool before disassembling, replacing barrel,

cleaning, or assembling.

Breech

Receiver

Barrel Assembly

Slot in

Barrel

Tang Cap

Tang Spring

Tang

3. Reinsert barrel assembly slotted side down

into receiver. Turn tool over. With barrel

touching breech, insert tang and tang spring

into hole on bottom of receiver. Make sure

tang drops into the slot in the barrel. Screw on

tang cap completely. Tang cap must always be

kept tight to ensure proper operation of tang.

2. Place buffer, small end first, in muzzle cap.

Push new piston all the way into the barrel.

Screw muzzle cap into barrel.

TO REASSEMBLE:

IMPORTANT: Inspect piston ring and replace

if worn.

1. Install new piston ring onto piston (if required).

a) Remove old piston ring.

b) Install new ring. The piston ring consists of

three turns. Place one end into groove

and twist around piston until it is com-

pletely in groove.

IMPORTANT: This tool is equipped with a

piston buffer. The buffer stops the piston before

it makes contact with the muzzle cap. This

protects the barrel and muzzle cap. Inspect and

replace the buffer on a regular basis.

Worn Piston

Buffer

New Piston

Buffer

TO REPLACE BUFFER AND PISTON:

1. a) Remove tang cap, tang spring, and tang.

Slide barrel assembly from receiver.

b) Remove muzzle cap from barrel by un-

screwing counterclockwise.

Barrel Assembly

Muzzle Cap

Barrel

Tang

Tang Spring

Tang Cap

Receiver

Piston

Barrel

Chamber

Piston Buffer

Barrel

c) Insert a rod or screwdriver into barrel

chamber and push piston and buffer out of

barrel.

Piston

Piston Ring

Barrel

Piston

Muzzle Cap

Piston Buffer

(Small End in Muzzle Cap)

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Remington 494 User Manual Page 21

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