DWFP12569_9R202311RA_DWLT_2in1 FLOORING TOOL MANUAL_MAN_JM:103697RevE_MIIIFS_MIIIFN.qxd 2012/9/25 上
MAINTAINING THE DWFP12569 SERIES TOOLS
TO REPLACE PISTON:
a. Insert the flats on the lower end of the driver piston stem carefully into the end of piston and plunger wrench, BC1009.
b. Using another special wrench, BC1009, or another wrench of the proper size, unscrew the plunger from the upper end of the stem. After this is done, it will be possible to lift the poppet off the stem.
c. Place the special wrench, BC1009, down over the piston stem onto the driver piston, locking the piston ears in the slots in the wrench. Unscrew the piston from the stem.
TO REPLACE DRIVER:
a. It is not necessary to disassemble the
b. Insert special wrench, BC1009, over the driver piston, locking the piston ears in the slots in the wrench. Unscrew the piston from threaded portion of the stem.
c. To remove the driver blade from the piston stem, push the driver blade pin out of the stem. This will release the blade.
d. Insert new driver blade into the slot in the end of the driver piston stem and assemble the driver blade pin. Test the side play in the driver blade by grasping the driver piston stem in one hand and the blade in the other and moving the blade sideways in alignment with the slot in the stem. There should be a small amount of side play in the blade. This is necessary to take care of any slight misalignment between the blade and guide in the nose. If there is no side play, the blade should be removed and the top (pin end) just barely dressed off with a stone. It is not necessary to do more than smooth off the top to get the necessary side play. Do not grind. Reinsert the blade and pin in the stem and test for side play once more. Repeat as necessary to get this small amount of side play. Carefully examine the large threaded portion of the piston stem. A nylon lock can be seen imbedded in a recessed hole in the stem. It is very important that this nylon lock can be replaced when its locking efficiency has been reduced through several disassemblies of the piston. It is necessary to use the sharp point of a knife, or some such instrument, to remove this nylon lock. Insert a new one by setting it into the recessed hole in the stem, and tapping it gently until firmly seated. Reverse these instructions to reassemble.
e. Assemble plunger flush with end of piston stem.
