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Makita Jack Hammer HM1203C 2010 Piston Service

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Qué necesitas

  1. Makita Jack Hammer HM1203C 2010 Piston Service, Remove the side handle: paso 1, imagen 1 de 1
    • Unscrew the knob securing the side handle.

  2. Makita Jack Hammer HM1203C 2010 Piston Service: paso 2, imagen 1 de 2 Makita Jack Hammer HM1203C 2010 Piston Service: paso 2, imagen 2 de 2
    • Remove the bolt securing the side handle.

    • Remove the side handle.

  3. Makita Jack Hammer HM1203C 2010 Piston Service, Remove the handle assembly: paso 3, imagen 1 de 1
    • Use a Phillips #2 screwdriver to remove the six screws securing the handle assembly.

  4. Makita Jack Hammer HM1203C 2010 Piston Service: paso 4, imagen 1 de 3 Makita Jack Hammer HM1203C 2010 Piston Service: paso 4, imagen 2 de 3 Makita Jack Hammer HM1203C 2010 Piston Service: paso 4, imagen 3 de 3
    • Pull the handle assembly away from the hammer, but do not completely remove it yet. It's still connected to the hammer by a power cable.

  5. Makita Jack Hammer HM1203C 2010 Piston Service: paso 5, imagen 1 de 2 Makita Jack Hammer HM1203C 2010 Piston Service: paso 5, imagen 2 de 2
    • Pull the power connector straight off of its plug.

    • Remove the handle assembly.

  6. Makita Jack Hammer HM1203C 2010 Piston Service, Disassemble the front end: paso 6, imagen 1 de 3 Makita Jack Hammer HM1203C 2010 Piston Service, Disassemble the front end: paso 6, imagen 2 de 3 Makita Jack Hammer HM1203C 2010 Piston Service, Disassemble the front end: paso 6, imagen 3 de 3
    • Use a small pry bar or flathead screwdriver to pry the rubber front cap off of the hammer.

    • This can be replaced as part of a service kit.

  7. Makita Jack Hammer HM1203C 2010 Piston Service: paso 7, imagen 1 de 2 Makita Jack Hammer HM1203C 2010 Piston Service: paso 7, imagen 2 de 2
    • Use a pair of snap ring pliers to expand the snap ring on the front of the hammer.

    • Remove the snap ring.

  8. Makita Jack Hammer HM1203C 2010 Piston Service: paso 8, imagen 1 de 1
    • Remove the washer on the front of the hammer.

  9. Makita Jack Hammer HM1203C 2010 Piston Service: paso 9, imagen 1 de 1
    • Lift the front cover off of the front of the hammer.

  10. Makita Jack Hammer HM1203C 2010 Piston Service: paso 10, imagen 1 de 1
    • Lift the rubber ring off of the front of the hammer.

  11. Makita Jack Hammer HM1203C 2010 Piston Service: paso 11, imagen 1 de 1
    • Remove the inner front cover.

  12. Makita Jack Hammer HM1203C 2010 Piston Service: paso 12, imagen 1 de 3 Makita Jack Hammer HM1203C 2010 Piston Service: paso 12, imagen 2 de 3 Makita Jack Hammer HM1203C 2010 Piston Service: paso 12, imagen 3 de 3
    • Compress the spring and hold it down while you pull the two retainers out of their slots and remove them.

  13. Makita Jack Hammer HM1203C 2010 Piston Service: paso 13, imagen 1 de 2 Makita Jack Hammer HM1203C 2010 Piston Service: paso 13, imagen 2 de 2
    • Remove the spring guide.

    • Remove the spring.

  14. Makita Jack Hammer HM1203C 2010 Piston Service, Remove the barrel: paso 14, imagen 1 de 2 Makita Jack Hammer HM1203C 2010 Piston Service, Remove the barrel: paso 14, imagen 2 de 2
    • Remove the front barrel cover.

  15. Makita Jack Hammer HM1203C 2010 Piston Service: paso 15, imagen 1 de 1
    • Remove the 4 mm hex bolt securing the barrel cover.

  16. Makita Jack Hammer HM1203C 2010 Piston Service: paso 16, imagen 1 de 2 Makita Jack Hammer HM1203C 2010 Piston Service: paso 16, imagen 2 de 2
    • Lift the barrel cover straight up and remove it.

  17. Makita Jack Hammer HM1203C 2010 Piston Service: paso 17, imagen 1 de 2 Makita Jack Hammer HM1203C 2010 Piston Service: paso 17, imagen 2 de 2
    • Use a pair of snap ring pliers to expand the snap ring securing the bolt holder.

    • Remove the snap ring.

  18. Makita Jack Hammer HM1203C 2010 Piston Service: paso 18, imagen 1 de 2 Makita Jack Hammer HM1203C 2010 Piston Service: paso 18, imagen 2 de 2
    • Lift the washer off of the bolt holder and remove it.

  19. Makita Jack Hammer HM1203C 2010 Piston Service: paso 19, imagen 1 de 1
    • Remove four 6 mm hex bolts securing the barrel.

  20. Makita Jack Hammer HM1203C 2010 Piston Service: paso 20, imagen 1 de 2 Makita Jack Hammer HM1203C 2010 Piston Service: paso 20, imagen 2 de 2
    • Lift the barrel straight up and remove it.

  21. Makita Jack Hammer HM1203C 2010 Piston Service, Remove the rubber ring 39: paso 21, imagen 1 de 3 Makita Jack Hammer HM1203C 2010 Piston Service, Remove the rubber ring 39: paso 21, imagen 2 de 3 Makita Jack Hammer HM1203C 2010 Piston Service, Remove the rubber ring 39: paso 21, imagen 3 de 3
    • Use an angled pick to pull the washer and rubber ring 39 out of the barrel.

  22. Makita Jack Hammer HM1203C 2010 Piston Service: paso 22, imagen 1 de 1
    • Remove the rubber ring 39.

    • This can be replaced as part of a service kit.

  23. Makita Jack Hammer HM1203C 2010 Piston Service, Remove the bolt holder: paso 23, imagen 1 de 1
    • Lift the upper-most rubber ring straight up and remove it from the bolt holder.

  24. Makita Jack Hammer HM1203C 2010 Piston Service: paso 24, imagen 1 de 1
    • Lift the upper-most washer straight up and off of the bolt holder.

  25. Makita Jack Hammer HM1203C 2010 Piston Service: paso 25, imagen 1 de 2 Makita Jack Hammer HM1203C 2010 Piston Service: paso 25, imagen 2 de 2
    • Grasp the bolt holder, rubber ring 24, and the two metal sleeves below it, and lift it off of the cylinder.

  26. Makita Jack Hammer HM1203C 2010 Piston Service, Remove rubber ring 24: paso 26, imagen 1 de 2 Makita Jack Hammer HM1203C 2010 Piston Service, Remove rubber ring 24: paso 26, imagen 2 de 2
    • Separate the rubber ring 24 and the two metal sleeves from the bolt holder.

  27. Makita Jack Hammer HM1203C 2010 Piston Service: paso 27, imagen 1 de 2 Makita Jack Hammer HM1203C 2010 Piston Service: paso 27, imagen 2 de 2
    • Separate the rubber ring 24 from the two metal sleeves.

    • Remove the rubber ring 24.

    • This can be replaced as part of a service kit.

  28. Makita Jack Hammer HM1203C 2010 Piston Service, Remove the O-ring 35.5: paso 28, imagen 1 de 2 Makita Jack Hammer HM1203C 2010 Piston Service, Remove the O-ring 35.5: paso 28, imagen 2 de 2
    • Use an angled pick to lift the O-ring 35.5 out of its groove on the bolt holder.

    • Remove the O-ring 35.5.

    • This can be replaced as part of a service kit.

  29. Makita Jack Hammer HM1203C 2010 Piston Service, Remove the bolt: paso 29, imagen 1 de 2 Makita Jack Hammer HM1203C 2010 Piston Service, Remove the bolt: paso 29, imagen 2 de 2
    • Use a long punch, long flathead screwdriver, or a thin, long bar to push the bolt out of the bolt holder.

    • Remove the bolt.

    • During reassembly, make sure all the seals on the bolt stay seated properly while you slide the bolt back into the holder.

  30. Makita Jack Hammer HM1203C 2010 Piston Service, Remove the cylinder: paso 30, imagen 1 de 2 Makita Jack Hammer HM1203C 2010 Piston Service, Remove the cylinder: paso 30, imagen 2 de 2
    • Lift the cylinder straight out of the aluminum housing.

    • During reassembly, the cylinder will have to slide over the piston, which is sitting in the bottom of the aluminum housing. Make sure the piston is centered and pointing straight up so that it slides all the way into the cylinder.

  31. Makita Jack Hammer HM1203C 2010 Piston Service, Remove the striker: paso 31, imagen 1 de 2 Makita Jack Hammer HM1203C 2010 Piston Service, Remove the striker: paso 31, imagen 2 de 2
    • Pull the striker out of the cylinder.

    • You may need to shake the cylinder until the striker slides out of the bottom of the cylinder.

    • During reassembly, install the cylinder first, then push the striker in through the top, as seen in the second photo. Make sure the cylinder is seated all the way down into the housing before inserting the striker.

  32. Makita Jack Hammer HM1203C 2010 Piston Service, Remove the striker O-ring 31.5: paso 32, imagen 1 de 2 Makita Jack Hammer HM1203C 2010 Piston Service, Remove the striker O-ring 31.5: paso 32, imagen 2 de 2
    • Use a pick to pry the striker O-ring 31.5 out of its groove on the striker.

    • Remove the striker O-ring 31.5.

    • This can be replaced as part of a service kit.

  33. Makita Jack Hammer HM1203C 2010 Piston Service, Remove the housing: paso 33, imagen 1 de 1
    • Use a 5 mm hex key to remove the six screws securing the aluminum housing.

  34. Makita Jack Hammer HM1203C 2010 Piston Service: paso 34, imagen 1 de 1
    • Separate the aluminum housing from the rest of the hammer.

  35. Makita Jack Hammer HM1203C 2010 Piston Service: paso 35, imagen 1 de 2 Makita Jack Hammer HM1203C 2010 Piston Service: paso 35, imagen 2 de 2
    • Slide the fix guides and the rubber plate out of their slots on the housing and remove them.

  36. Makita Jack Hammer HM1203C 2010 Piston Service, Remove the piston: paso 36, imagen 1 de 1
    • Use a Phillips #2 screwdriver to remove the four screws securing the piston cover.

  37. Makita Jack Hammer HM1203C 2010 Piston Service: paso 37, imagen 1 de 1
    • Remove the piston cover.

  38. Makita Jack Hammer HM1203C 2010 Piston Service: paso 38, imagen 1 de 2 Makita Jack Hammer HM1203C 2010 Piston Service: paso 38, imagen 2 de 2
    • Rotate the crank shaft and the connecting rod so that the rod is vertical and the end is at the very bottom of the housing.

    • This lines the crank shaft up with the housing cutout so that it can slide through the housing in the next steps.

  39. Makita Jack Hammer HM1203C 2010 Piston Service: paso 39, imagen 1 de 3 Makita Jack Hammer HM1203C 2010 Piston Service: paso 39, imagen 2 de 3 Makita Jack Hammer HM1203C 2010 Piston Service: paso 39, imagen 3 de 3
    • Use an arbor press and a custom punch to carefully press the crank shaft, bearing, and gear assembly out of the housing.

    • If you don't have access to a press or custom tool, use a punch and a hammer to tap the crank shaft until the whole crank shaft, bearing, and gear assembly starts to slide out.

    • It may also be necessary to use a smaller punch to tap on the edges of the bearing through the small holes in the aluminum housing on either side of the crank shaft.

    • During reassembly, make sure the bearing and gear are lined up with the hole in the aluminum housing before pressing them back in. Make sure the shaft is lined up with the cutout before reinstalling the assembly.

  40. Makita Jack Hammer HM1203C 2010 Piston Service: paso 40, imagen 1 de 1
    • Pull the connecting rod and the piston out of the housing.

  41. Makita Jack Hammer HM1203C 2010 Piston Service, Remove the piston O-ring 31.5: paso 41, imagen 1 de 2 Makita Jack Hammer HM1203C 2010 Piston Service, Remove the piston O-ring 31.5: paso 41, imagen 2 de 2
    • Use a pick to pry the piston O-ring 31.5 out of its groove in the piston.

    • Remove the piston O-ring 31.5.

    • This can be replaced as part of a service kit.

  42. Makita Jack Hammer HM1203C 2010 Piston Service, Remove the O-ring 35: paso 42, imagen 1 de 3 Makita Jack Hammer HM1203C 2010 Piston Service, Remove the O-ring 35: paso 42, imagen 2 de 3 Makita Jack Hammer HM1203C 2010 Piston Service, Remove the O-ring 35: paso 42, imagen 3 de 3
    • Use a pick to pry the O-ring 35 out of its groove in the piston.

    • Remove the O-ring 35.

    • This can be replaced as part of a service kit.

Conclusión

To reassemble your device, follow these instructions in reverse order.

2 personas más completaron esta guía.

Adam O'Camb

Miembro Desde 04/11/15

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