Instructions For Disassembly Of R4Dw-X S - Internal Working Parts - Hilti R4DW-X S Mode D'emploi

Air Leaks
— at Valve Cap Assy (#23) Valve ring 0-ring (#24) damaged or
— from trigger valve
bushing assy (#35)
— at Trigger Valve Piston
(#37)
— between grip (#40) and Gaskets damaged
grip cover (#45)
— at Safety Valve (#54)
Piston Assy
— at nosepiece (#8) nail
exit
Tool will not fire
— Driver Blade Assy (#16) Nails jammed in nosepiece (#8)
stuck down
10. Instructions for disassembly of R4DW-X S — Internal working parts
(Use with Exploded View Drawings (2-4) and Parts list)
NOTE: Before starting on the disassembly of the tool,
disconnect the tool from the air supply and remove all
fasteners from the magazine assembly. If handle grip
(40), plate (46), flange (10), and valve bushings (52, 59)
require service, contact your Hilti Representative.
10.1 Magazine assembly (48)
Release 2 nuts (66) using a 17 mm open end wrench
and 5 mm Allen wrench. Remove hex socket screws
(29) and washers (61). Position pusher (47) in forward
position and remove magazine assembly (48) from nose-
piece (8).
10.2 Pusher (47) and grip (63)
Using a 2 mm pin punch, drive out spring pin (62).
Remove pusher (47) from magazine (48) by sliding for-
Printed: 07.07.2013 | Doc-Nr: PUB / 5070502 / 000 / 00
worn
Valve Cap 0-ring (#22) and/or (#18)
damaged or worn
0-ring (#36) and/or (#38) worn or
damaged
0-rings (#38) damaged or worn
Screws (#58) loose
0-rings (#55) damaged or worn
Trigger valve body 0-rings damaged
Trigger valve body defective (#56)
Damaged bumper (#12)
0-ring (#14) damaged or worn
0-rings (#18, #19) damaged or worn
Air pressure too low
Safety yoke (#1) stuck in down
position
Bent Driver Blade
0-rings (#17) damaged or worn
Bumper (#12) severely damaged
Defective trigger valve body (#56)
Fit 0/H Kit #12552
Fit 0/H Kit #12553
Fit 0/H Kit #12557
Replace 0-rings. Fit 0/H Kit #12557
Replace gaskets (#42)
Tighten screws
Fit 0/H Kit #12652
Fit 0/H Kit #12554
Replace trigger valve body assy.
Replace bumper (#12) as necessary
Replace 0-ring. Fit 0/H Kit #12552
Replace 0-ring. Fit 0/H Kit #12552
Check air source, regulator setting gauges,
hoses, fittings, etc.
Check for dirt or obstructions Replace
safety if deformed
Clear jammed nail
Inspect Driver Blade and Nosepiece
Replace Driver Blade Assy (#16)
Fit OH Kit #12657
Replace bumper
Replace trigger valve body assy
ward and away from magazine. Pull back grip (63) slight-
ly, align grip pin (65) with detents in magazine and tilt
back portion of grip up. Once grip pin (65) is clear of
magazine, tilt the grip (63) up and forward to clear the
scroll spring. If necessary, tap grip pin (65) out of bush-
ing (64) and grip (63). If the scroll spring (51) requires
replacement, contact your local Hilti Representative.
10.3 Safety yoke (1)
Remove 2 hex locknuts (3) using a 10 mm open end
wrench and take off guide plate (2). Remove the safety
return spring (4). Remove the hex socket screw (5) clos-
est to Valve Piston Assembly (54) using a 5 mm Allen
wrench. It is not necessary to remove the nosepiece (8).
Slide out safety yoke (1) from Safety Valve Piston Assem-
bly (54).
en
5