Dewalt DW45RN Support Question

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Question posted by scout637 on April 28th, 2023

How To Stop Trigger Leak

My DW45RN started leaking from trigger. I replaced trigger valve and is till leaked. I just put in a second new trigger valve. It still leaks but will fire. Any ideas why this trigger valve keeps leaking?

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Answer #1: Posted by SonuKumar on April 28th, 2023 6:24 PM

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O-ring: The trigger valve is sealed with O-rings that can become worn or damaged over time, causing leaks. Check the O-rings and replace them if necessary.

Piston/driver: If the piston or driver in the nail gun is worn or damaged, it can cause excessive air pressure to build up, leading to leaks. Inspect these components and replace them if necessary.

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Related Dewalt DW45RN Manual Pages

Instruction Manual - Page 3

... in the work FIG. B) • Regulate air pressure. Definitions: Safety Guidelines The definitions below describe the level of regulator failure. (Fig. English BEFORE OPERATING THIS TOOL, CAREFULLY READ AND UNDERSTAND ALL INSTRUCTIONS IN THE IMPORTANT SAFETY INSTRUCTIONS SECTION. A) • Always wear appropriate personal hearing and other protection during use , noise from...

Instruction Manual - Page 4

...; Do not remove, tamper with pneumatic tools. F • Use couplings that the tool contains fasteners. 2 If the contact trip is adjusted when the tool is connected to prevent a fastener from being fired during connection. H otherwise cause the tool, trigger, or contact trip to another operator. Do not FIG. Leaking air, damaged parts or missing parts should...

Instruction Manual - Page 5

... discharge could result. Entangled or snarled hoses can cause you or a co-worker. M • Use the tool only for the fastener to penetrate. L) • Always keep fingers clear of contact trip to protrude unexpectedly from trigger when not driving fasteners. N) • Do not drive nails onto the heads of other fasteners or with...

Instruction Manual - Page 6

.... Refer to maintain control FIG. The tool may also cause a spark. (Fig. Check the manual for triggering options. T) TO AVOID DOUBLE FIRES: • Do not engage the tool against the work area. Q when using the sequential trip trigger, do not actuate the tool unless the tool is allowed to keep tool in the compressor is set so that...

Instruction Manual - Page 7

... contains chemicals known to the State of serious injury from these chemicals: work with trigger during adjustments. ALWAYS WEAR CERTIFIED SAFETY EQUIPMENT: • ANSI Z87.1 eye protection ...or medication. Do not use tool while tired or under the influence of work areas. SAVE ALL WARNINGS AND INSTRUCTIONS FOR FUTURE REFERENCE Specifications MODEL DW45RN HEIGHT 9.8" (249 mm) WIDTH...

Instruction Manual - Page 8

... install a 1/4" (6.4 mm) fitting: screw it prior to eliminate air leaks. 2. In accordance with the ANSI Standard SNT-101-2015, the DeWALT coil nailers are required for maximum tool performance. Always use couplings that shut off air supply from the power supply. Trigger WARNING: Keep fingers AWAY from magazine before making adjustments or personal injury...

Instruction Manual - Page 9

... trip and pusher assemblies. I ) to Tool Specifications. 7. Read all fasteners. 5. Check for audible leaks around valves and gaskets. Check for smooth and proper operation of the nailer. Loading the Tool (Fig. 2-4) WARNING: Keep the tool pointed away from air supply before using tool. 2. Push the door latch (D) to the tool. 3. For safe operation, complete the...

Instruction Manual - Page 10

... Insert the first nail into the nose and the second nail (M) between the two rails of the tool. 8. M 9. Uncoil enough nails [approximately 3" (76 mm)] to reach the nose of the feed pawl...consistently. FIG. 6 G D Trigger Operation WARNING: Always wear proper eye [ANSI Z87.1 (CAN/CSA Z94.3)] and hearing protection [ANSI S12.6 (S3.19)] when operating this tool. 8 IMPORTANT: Fasteners must ...

Instruction Manual - Page 11

... contact trip on the work before pulling the trigger. Do not press the tool against the work surface, WITHOUT PULLING THE TRIGGER. To operate a sequential trip tool, first position the contact trip on "Contact Trip" tools is holding trigger pulled) an unwanted second fastener will be driven. WARNING: Keep hands and body away from body, clothing or...

Instruction Manual - Page 12

... the contact trip is driven can cause premature wear and/ or damage to the trigger stop on the frame. Hold the tool off the trigger, press the contact trip against the work surface, and pull the trigger. SEQUENTIAL TRIP OPERATION (GRAY TRIGGER) A. The trigger must be adjusted using the depth FIG. 7 adjustment wheel on the size of...

Instruction Manual - Page 13

... the tanks will condense in cold weather because any deformation that may result.. Make sure compressor tanks have occurred to jam frequently in the nosepiece, keep the tool pointed away from you and follow the directions Q O below. 1. Disconnect the air supply from the front edge of the previous row of this...

Instruction Manual - Page 14

... compressor and nailer HOW Open petcocks or other rubber parts. However, keep tool out of oils or solvents is not recommended as normal. 9. Keep the tool as warm as excessive heat can damage bumpers, o-rings and other drain valves on end cap of tool ACTION Drain compressor tanks and hoses daily WHY Prevents accumulation of use...

Instruction Manual - Page 15

... 1-800-4-DeWALT (1-800433-9258). Seven Year Limited Warranty DeWALT will maintain the tool and replace worn parts caused by a DeWALT factory service center or a DeWALT authorized service... detail of injury, only DEWALT, recommended accessories should be performed by normal use identical replacement parts. To reduce the risk of warranty coverage and warranty repair information, visit www....

Instruction Manual - Page 16

...sold in the packaging, call 1-800-4-DeWALT (1-800-4339258) for warranty information. FREE WARNING LABEL REPLACEMENT: If your warning labels become illegible or are missing, call the local company or see country ... This warranty does not apply to products sold in Latin America, see website for a free replacement. DO NOT use a tool with missing or damaged safety warning label(s). 14

Instruction Manual - Page 17

... piston seal. WARNING: To reduce the risk of tool Loose screws. Verify adequate air supply. Worn or damaged valve. Worn or damaged o-rings or bumper. Replace with undamaged fasteners. Contact a DeWALT Authorized Warranty Service Center 15 Verify fasteners are loaded in trigger area Loose screws. FOR MORE SERIOUS OR PERSISTENT PROBLEMS, CONTACT A DeWALT SERVICE...

Parts Diagram - Page 2

...subjecttochange.Pleasevisitwww.dewaltservicenet.comfor DW45RN Type 0 Description QtyRequired FRAMEPROTECTORRGT 1 SCREW-SHCS-M5X0.80X2 4 CAP 1 RUBBERINSERT 2 FRAMEPROTECTORLEFT 1 CAPGASKET 1 PISTONRING 1 O-RING1.489X.070 1 DRIVERKIT 1 UPSTOP 1 CHECKVALVEPLUG 1 CHECKVALVEPLUNGER 1 O-RING-2.737X.103 1 RESERVOIRBULKHEAD 1 O-RING-1.862X.103...

Parts Diagram - Page 3

...andavailabilitysubjecttochange.Pleasevisitwww.dewaltservicenet.comfor DW45RN Type 0 Description QtyRequired MPG030010 PIN-ROLL-3MMX10MM ...149855 STOP-FEEDPISTON 1 149853 COLLAR-SPRING 1 149854 RETAININGRING-INCH 1 9R210226 VALVESCREW,FRONT 3 9R210227 VALVESCREW,REAR 1 MHE3050-100 NUT-NYLONM3X.50 4 100387 SPRING-COMPRESSION 1 107581 ASSEMBLY-C.T.TRIGGER ...

Parts Diagram - Page 4

... List for currentpartsinformation. Partslist,pricing,andavailabilitysubjecttochange.Pleasevisitwww.dewaltservicenet.comfor DW45RN Type 0 Description QtyRequired 9R210192 CONTACTARMSPRINGU 1 9R210175 UPPERCONTACTARM 1 45RN-VALVE VALVEKIT 1 9R205577 FRAME 1 MSC6100-22 SCREW-SOCHD.CAPM6 1 MSC6100-30 SCREW-SHCS-M6X1.00X3 1 MHE6100-100...