Service Manual

Page 12-A

DISASSEMBLY PROCEDURE FOR CO

PISTOLS - - MODELS 150 – 157 REFER TO DRAWINGS PAGE 12.1, 12.2

1. Remove Grip Screws and Plastic Grip.

To remove Grip Frame Assembly (130-64),

remove rear Frame Screw (105-55) and Front

Frame Screw (130-31). CAUTION: Safety

Spring (105-45) and Safety Spring Ball (105-44)

may drop out when Grip Frame is removed.

3. Remove Hold Down Screw (150-36A).

Lift Breech Barrel from Sight Assembly.

Remove Hammer Assembly (150-62).

NOTE: Early models contained a Hammer

Assembly with a screw type Power Adj. that

should be replaced with type shown in

Drawing Page 12.1.

4. Exhaust all CO

Tube, by tapping Valve

Stem thru rear of Tube, before removing

Tube Cap Assembly (150-64)

2. Remove Rear Sight Screw (150-16).

Remove Rear Sight (150-15).

Remove Breech Plug (150-17).

Remove Breech Bolt Screw (140-52)

and slide Breech Bolt (130-20) out to rear.

Slide Loading Sleeve (130-15) forward and

remove.

NOTE: Some models contained a headless breech

Bolt Screw that should be replaced with (140-52)

to prevent Loading Sleeve from lifting up.

5. Push Valve Assembly (150-61) out of Tube

(150-1) from rear, using 1/8” rod.

Refer to drawing Page 12.2 for piercing

and Exhaust Valve details. Inspect Exhaust

Valve gasket and metal seats for damaged

surfaces, replace when necessary. Parts

must be clean prior to assembling.

Rest Block “O” Ring (150-54) is a special compounded material that resists swelling under CO

pressure.

MODIFICATION OF PIERCING PIN PART #160-17, Sec. 12, Page 12.2

The .245 Dia. shoulder on Piercing Pin has been reduced in length from 11/32” to 3/16”.

This change has been made to eliminate the piercing pin from sticking in the orifice of the

aluminum Piercing Body Part #160-42.

This modification was made on Rifles in production 2-15-56 at the factory.