OVERHAUL KIT
R250SFA Straight Finish Nailer PSF0003
THIS KIT INCLUDES:
Seal (7) Bumper (21)
O-Rings (8, 11, 18) Retainer (41)
Collar (12) Trigger Valve Assembly (99)
Cylinder Cap Seal (13) Grease
Piston Ring (14) Overhaul Kit Instruction Sheet
Cylinder Ring (20)
Tools needed (but not included): 1/8-in. punch for removing head
valve assembly, and 2.5 mm punch for removing trigger pivot pin.
REMOVING AND REPLACING O-RINGS AND SEALS
See Figures 1 - 3.
1. Disconnect the tool from the air supply and remove any fasteners
that remain in the tool.
2. Using a 4 mm hex key, remove the four screws (1) from the top
cap (6) of the tool. Remove the top cap.
3. Remove the cylinder cap seal (13).
4. Remove the press ring (17).
5. With two pair of needle-nose pliers, gently grasp the ribs of the
cylinder (on opposing sides) and pull the cylinder (19) from the tool
body.
6. Remove the driver (16) from the cylinder (19) and set both aside.
7. Remove the muffler cap using a 4 mm hex key and set aside.
8. Using a 1/8-in. punch, gently push the valve assembly out of the
cap through the holes in the top of the cap.
9. Separate the seal (7) from the head valve.
10. Remove o-rings (8, 11) from the head valve piston.
11. Remove collar (12).
12. Clean all parts with a dry, clean cloth.
13. Apply a light coat of grease to new o-rings (8, 11) and install.
14. Reassemble parts in the order shown in Figure 2.
15. Push head valve assembly into cap, applying sufficient pressure
to insure the seal (7) and the collar (12) snap into position.
16. Reinstall muffler assembly onto cap.
17. Set aside tool cap and proceed with cylinder maintenance.
DANGER:
Do not use oxygen, combustible gases, or bottled gases as a power source for this tool. The tool will explode and cause
death or serious injury.
WARNING:
To reduce the risk of injury, the user must read and understand the operator’s manual before using this product. If the operator’s
manual which originally accompanied this tool is missing, visit us at www.ridgid.com or call 1-866-539-1710.
WARNING:
Disconnect the tool from the air supply before performing maintenance on this tool. Failure to do so could result in serious
personal injury.
WARNING:
The operation of any power tool can result in foreign objects being thrown into your eyes, which can result in severe eye
damage. Before beginning power tool operation, always wear safety goggles or safety glasses with side shields, or a full face
shield when needed. We recommend Wide Vision Safety Mask for use over eyeglasses or standard safety glasses with side
shields. Always use eye protection which is marked to comply with ANSI Z87.1.
Fig. 1
Fig. 2
Valve Assembly
Includes
Key No. 7-12
Key No. 10
With Items 8, 9,
and 11
Installed
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