Hitachi C 8FSE Technical Data And Service Manual page 42

(3) Reassembly of the ball bushing
The Ball Bushing [114] and Holder (A) [124] are
maintained at a smooth fit. When placing the Ball
Bushing [114] into Holder (A) [124], gently hammer it
with a plastic hammer so that the Ball Bushing [114]
is seated into Holder (A) [124] in parallel. After
reassembly, lubricate around the steel balls inside the
Ball Bushing [114] with 2 grams of Nippeco SEP 3A
grease. Apply machine oil to slide pipe (A) and slide
pipe (B) of Hinge (A) Ass'y [87]. When reassembling,
put the Ball Bushing [114] inside Holder (A) [124] as
indicated in (A) of Fig. 55. Visual observation will do
for this insertion. Layout in (A) offers about 30%
higher rated load in (B).
6. Lubrication
Advise the customer to lubricate the machine as indicated below at least once a month. Also, prior to
applying lubricant, any sawdust, dirt or other foreign matter should be thoroughly wiped away with a soft
cloth.
(1) Swiveling section of the gear case
Coat machine oil on the swiveling and sliding portions of the Gear Case [198] and Hinge (A) Ass'y [87].
(2) Vise section
Coat machine oil on the screw thread portion of the Knob Bolt M10 x 66 [35] of the Vise Ass'y [42].
(3) Holder (A)
Coat machine oil on the swiveling and sliding portions of Holder (A) [124] and the Hinge Shaft (A) [9].
7. Product precision
On completion of reassembly, confirm precision tolerances.
Deflection of dummy disc
Squareness between base and fence (A) and fence (B)
Flatness of fence (A) and fence (B)
Squareness between dummy disc and fence (A) and fence (B)
Squareness between fence (A) and fence (B) and slide pipes
(Place a square against fences (see Fig. 56), slide the head and
check for any clearance between the dummy disc and the square.)
Squareness between dummy disc and turn table
Surface alignment of base and turn table
(Use the upper surface of the base as a reference.)
Item
Fig. 56
-39-
Fig.55
Tolerance
0.15/φ200
0.1/65 (Height of fence (A))
0.1/49 (Height of fence (B))
0.15
0.15/100
0.15/180
0.15/100
(+) 0.1
(-) 0.2