Hitachi NT 65GB Technical Data And Service Manual page 35

(2) Disassembly and reassembly of the housing section (See Fig. 29.)
[Tools required]
• Hex. bar wrench (3 mm (0.118"))
• Spanner (8 mm) or slender hd. pliers
• Roll pin puller (3 mm (0.118"))
• Phillips screwdriver
• Retaining ring puller for C-type holes
• Small flat-blade screwdriver
(a) Disassembly
• Turn the Adjuster [80] and remove Pushing Lever (A) [82]. Then remove the Seal Lock Hex.
Socket Hd. Bolt M4 x 12 [33] and the entire blade guide ass'y.
Remove the entire chamber ass'y and cylinder ass'y, and then detach the push lever arm
ass'y from the housing.
• Removing the Seal Lock Hex. Socket Hd. Bolt M4 x 10 [74] allows you to separate the
components into the chamber ass'y, cylinder ass'y, and push lever arm ass'y.
(b) Reassembly
Conduct reassembly by reversing the disassembly procedure. Note the following points:
• Apply oil along the inner circumference of the chamber ass'y (on sliding surfaces of the
cylinder and cylinder head), and along the outer circumference of the cylinder ass'y (piston
ring) as described in Section 10-1.
• Install the Chamber Spring [73] at the protrusion of the push lever arm ass'y, and then set it
into the spring installation groove of the cylinder ass'y. Carefully install the bent portion of the
push lever arm ass'y into the upper portion of the Chamber Stop Rubber [43], as the Chamber
Spring [73] is easily removed.
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