Hitachi P 20DA Technical Data And Service Manual page 13

Cordless planer
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8-1-2. Removal of Pulley (A) [28] and Pulley (B) [15] (See Fig. 9.)
(a) Remove the one Tapping Screw D4 x 25 [16] which fixes Belt Cover (B) [26] to the End Bracket [29], then
remove Belt Cover (B) [26].
(b) Pulley (A) [28] (left-hand threaded) and Pulley (B) [15] (right-hand threaded) are screwed onto the motor
shaft and the cutter spindle respectively. To remove Pulley (A) [28], fit a wrench to Pulley (A) [28] and put
the blade of a flatblade screwdriver into the groove at the tip of the motor shaft, then turn the screwdriver
counterclockwise.
(c) To remove Pulley (B) [15], fix the Cutter Block Ass'y [18] securely in a vise and fit a wrench to Pulley (B)
[15], then turn the wrench counterclockwise. It is recommended to wrap the Cutter Block Ass'y with a thick
cloth to prevent injury to fingers.
8-1-3. Removal of the Cutter Block Ass'y [18] and the Motor with Fan [32] from the End Bracket [29] (See Fig. 10.)
(a) After removal of Pulley (B) [15], tap the end of the spindle of the Cutter Block Ass'y [18] with a wooden
hammer. Then the Cutter Block Ass'y [18] can be removed.
(b) After removal of Pulley (A) [28], tap the end of the motor shaft slightly with a wooden hammer. Then the
Motor with Fan [32] can be removed.
Tap the end of the
motor shaft slightly
with a wooden hammer.
15
26
16
Tap the end of the
spindle with a
wooden hammer.
16
29
28
27
Fig. 9
18
29
Fig. 10
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32

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