OVERHAUL KIT
R350RHF Full Round Head Framing Nailer
THIS KIT INCLUDES:
Seal (9) Bumper (23)
O-Rings (10, 12, 15, 19, 22) Washer (8)
Trigger Valve Assembly (24) Mode Selector Switch (37)
Cap Seal (13) C-Clip (40)
Piston Ring (14) Grease
Cylinder Ring (20)
Overhaul Kit Instruction Sheet
Tools needed (but not included): 2.5 mm punch, 1.5 mm punch or 18GA
brad, 2 flat head screwdrivers and 5 mm hex key.
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 5 mm hex key, remove the four screws (4) from the cap (5).
Set cap and screws aside.
3. Remove the cap seal (13).
4. Remove the press ring (17) from the top of the cylinder (18). Set
aside.
5. With two flat head screwdrivers, gently pry the cylinder (18) from the
tool body as shown in Figure 1.
6. Remove the driver unit (16) from the cylinder (18) and set aside.
7. Remove the muffler cap (2) using a 5 mm hex key. Set muffler
assembly (1-3) aside.
8. Using a 2.5 mm punch, gently push the head valve assembly (8-12)
out of the cap (5) through the holes in the top of the cap (5).
9. Remove seal (9) and washer (8) from head valve (11).
10. Remove o-rings (10, 12) from head valve (11).
11. Clean all parts with a dry, clean cloth.
12. Apply a light coat of grease to new o-rings (10, 12) and install onto
head valve (11).
13. Install the new seal (9) and new washer (8) onto the head valve (11).
14. Set compression spring (7) into the cap (5).
15. Push head valve assembly (8-12) back into cap (5). Be sure that the
grooves in the top of the seal (9) align with the grooves in the bottom
of the cap (5). Apply sufficient pressure to insure the seal (9) snaps
into position.
16. Reinstall muffler assembly (1-3) onto cap (5). Set aside and proceed
with cylinder maintenance.
8
11
12
10
7
5
4
9
2
3
1
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 and, when
needed a full face shield. 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
Head Valve
Assembly Includes
Key Nos. 8-12
Key No. 11
With Items 10 and
12 Installed
18
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