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Maximum DCF55 Lithium Electric Nailer
When it is confirmed that the lithium battery tool needs to be disassembled
and repaired, the following requirements must be met before repair. In
subsequent repair steps, the requirements will be deemed to have been
met:
1. Be familiar with the contents of the manual, including the use and operation of lithium battery
tools, as well as safety warnings;
2. Turn off the power, remove the battery, and ensure that the lithium battery tool is in a power-
off status (refer to the relevant parts of the manual);
3. Take out all the nails in the lithium battery tool magazine (refer to the relevant parts of the
manual);
4. Wait until the temperature of the lithium battery tool to normal temperature (if the lithium
battery tool has just finished working and the temperature is too high, operator may be burned
or injured when disassemble it at this time);
Note: Dry, clean compressed air can be used to blow the cylinder body and motor parts to
cool down. Do not use freezing or other methods with large instantaneous temperature
differences to cool down.
5. Release the high-pressure gas in the cylinder block assembly to make the internal pressure the
same to atmospheric pressure
Use a Phillips screwdriver to remove one self-tapping screw and remove the protective cover;
use a slotted screwdriver to remove the plug knob. Be careful to keep the disassembled parts.
There is an O-ring inside the plug knob, be careful not to lose it. There is no need to replace
it until the repair is completed. (Figure 1, Figure 2).
6. Ensure that the operating space is clean and tidy, free of dust, iron filings and other impurities
and foreign matter (lithium battery tools contain magnetic parts that attract iron filings, and
some precision parts may be damaged if they are contaminated with impurities)
Note: Be sure to follow safety warnings in the manual, and remember not to point
the gun at yourself or others under any circumstances to avoid accidents!
The removed fasteners are supposed to be used again. But if screw thread is
Parts Service Guidance
Figure 1
figure 2
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Summary of Contents for Maximum DCF55
- Page 1 Maximum DCF55 Lithium Electric Nailer Parts Service Guidance When it is confirmed that the lithium battery tool needs to be disassembled and repaired, the following requirements must be met before repair. In subsequent repair steps, the requirements will be deemed to have been met: 1.
- Page 2 damaged, or if there are strict requirements for the appearance, use new screws. Disassembly of the housing The wearing parts of lithium battery tools are all inside the housing. When doing parts replacement, the housing needs to be disassembled. The steps are as follows: 1.
- Page 3 Figure 9 Figure 8 3. Disassemble the hook assembly Use an S3 wrench to remove the 2 screws (Figure 10) and remove the hook assembly (Figure 11). Well keep the 2 screws removed. Figure 11 Figure 10 4. Disassemble the housing assembly (right): Place the lithium battery tool flat on the operating platform with the housing assembly (right) facing up.
- Page 4 Figure 14 5. Take out the assembly parts (cylinder block assembly, cylinder base, reduction gearbox, motor, etc.): Remove the trigger and trigger compression spring; move the micro switch out of the card slot, move the controller assembly out of the card slot, move the control panel out of the card slot, and move the wiring strings out of the card slot.
- Page 5 Figure 16 At this point, the shell has been disassembled and the wearing parts can be replaced then. Replace reduction gearbox assembly 1. Disassemble the old reduction gearbox assembly: Use an S3 wrench to remove 2 screws and remove the damaged reduction gearbox assembly. Well keep the 2 screws and 2 pins that were removed.
- Page 6 ① Press and hold the valve core switch, and at the same time, use a longer and hard rod- shaped tool with appropriate width to be inserted from the open tip into the driver blade channel and push the driver blade up until it come to a hard stop. (Figure 19). Note: Be sure to turn on the valve core switch, otherwise when pushing the driver blade up, internal compressed air will hold driver blade from going up.
- Page 7 separated from the cylinder, and the cylinder is separated from the cylinder seat. Take out the piston assembly (Figure 25) and the bumper (Figure 24). Figure 24 Figure 21 cylinder base Figure 22 Figure 25 Figure 23 Notice: ① The threaded connection between the cylinder assembly and the cylinder will not be tightened.
- Page 8 Push the piston assembly (including star seal and piston ring) into the cylinder in the direction of the arrow in the figure, and repeat the movement several times to ensure it goes smooth. After the inspection is completed, position the piston assembly with the driver blade about half length remaining outside the cylinder (for subsequent guidance), and set it aside for later use.
- Page 9 Figure 29 4. Pressure holding test: Take the assembled components out of the housing assembly (left). Check and adjust the semi- circular tooth combination (Figure 18) to keep the driver blade channel open (Figure 19). Add 4kg of air pressure. Under this status, the piston assembly slides to the bottom of the cylinder block assembly, and the driver blade emerges from the guide body end surface.
- Page 10 Replace the trigger, trigger compression spring, trigger switch and operation panel combination 7. Replace the trigger switch and operation panel combination ○ ,1Remove the trigger switch from the controller Use a pick to pry off the electronic glue at the connection between the trigger switch connector and the controller connector (Figure 32), and then remove the trigger switch.
- Page 11 Figure 34 ○ ,4Install the operation panel assembly. Plug the operation panel assembly into the corresponding jack on the controller (Figure 35 ), and then apply electronic glue to the connection between the operation panel assembly and the controller connector. 8.
- Page 12 图 37 图 38 Replace guide body assembly 9. Replace the guide body assembly ○ ,1Use a wrench to loosen and remove one locking nut (No. 66 in the exploded view) and one hexagon socket screw (No. 71 in the exploded view ) ( Figure 39) Figure 39 ○...
- Page 13 Figure 41 Figure 42 ○ ,4Align the new guide body assembly mounting holes with the corresponding holes of the magazine, and tighten the 2 screws. (Exploded view number 68) (Figure 43) Figure 43 Replace guide body and corresponding components 10. Replace the guide body and corresponding components ○...
- Page 14 ve advised that the screw is coated with thread glue (Figure 45). Figure 45 ○ ,3Remove the adjusting screw assembly, nut (No. 48 in the exploded view ), and pin (No. 46 in the exploded view ) (Figure 46 ) Figure 46 ○...
- Page 15 Pressure refill operation 11. Pressure refilling operation ○ ,1Release the high-pressure gas in the cylinder assembly to make the internal and external air pressure consistent (Figure 1, Figure 2). Use a Phillips screwdriver to remove one self-tapping screw and remove the protective cover; use a slotted screwdriver to remove the plug knob.
- Page 16 ○ ,4Remove the battery and refill pressure (compressed air) through the gas nozzle. Pre-inflate until firing pin reach out of guide body (Figure 51 ), and then re-inflate to the required air pressure (0.4-0.42Mpa). Tighten plug knob and assembly protective cover back. Figure 50 Figure 51 ○...
- Page 17 tool firing testing 1. Install the assembly and electrical components back to the left housing: Restore the assembly and electrical components to their original state before disassembly, and place each component into its respective slot (Figure 30) to ensure stability. Notice: ①...
- Page 18 Figure 31 Follow-up finishing work 1. Assemble remaining parts: ① Reinstall the housing assembly (right) and use a Phillips screwdriver to screw in the 15 self-tapping screws (Figure 12). Pay attention to aligning all positioning slots, and be careful not to press wires. ②...
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