Hitachi CS 27EPAP(S) Service Manual page 16

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5. Reassembling the gear case section
(1) Reassembling the gear case section
First, press-fit the Ball Bearing 627 C3 [199]<199> into the Case [220]<220>.
NOTE: Be careful not to tilt the Ball Bearing 627 C3 [199]<199>.
Confirm that the Screw 6 x 8 [189]<189> is tightened. Apply seven to nine grams of specified Cosmo
Molybdenum No. 2 grease to the Ball Bearing 627 C3 [199]<199> in the Case [220]<220>. Set the
Cam [200]<200> on the Ball Bearing 627 C3 [199]<199>, and then press-fit the Gear [201]<201> (to
which the Ball Bearing 638Z [202]<202> is press-fitted) into the Ball Bearing 627 C3 [199]<199> in the
Case [220]<220>. Next, assemble the Stop Ring C-28, Inner [203]<203>. Press-fit the Ball Bearing
609 [193]<193> and the Ball Bearing 609Z ST [194]<194> to the Pinion [192]<192>, and then attach
the Stop Ring C-9, Outer [195]<195>. Apply 0.1 to 0.3 grams of specified Cosmo Molybdenum No. 2
grease to the gear section of the Pinion [192]<192>. Then press-fit the pinion ass'y to the Case
[220]<220> and assemble the Stop Ring C-24, Inner [196]<196>.
NOTE: Confirm that the Pinion [192]<192> rotates smoothly when turning the Gear [201]<201>.
Insert the Collar [204]<204> and the Sprocket Comp., 3/8 [205]<205> into the shaft of the Gear
[201]<201>, and then use a spanner to tighten the Flange Nut 6 [206]<206> with both 32 mm wide
sides of the Sprocket Comp., 3/8 [205]<205> fixed in place.
NOTE: Confirm that the Sprocket Comp., 3/8 [205]<205> rotates under the following operating
load.
Operating load: 1.18 N to 1.76 N (120 gf to 180 gf)
(2) Reassembling the oil tank section
Apply Turbine Oil 56 (JX Nippon Oil & Energy) to the inner and outer peripheries of the O-ring
[182]<182>, and then attach the O-ring [182]<182> to the Oil Pump Comp. [181]<181>.
Apply Primary Oil SAE30 (JX Nippon Oil & Energy) to the shaft of the Oil Pump Piston Comp.
[186]<186>, and Turbine Oil 56 (JX Nippon Oil & Energy) to the inner and outer peripheries of the
O-ring 1.4 [183]<183>. Pass the Oil Pump Spring [185]<185> and the Washer 2 [184]<184> through
the Oil Pump Piston Comp. [186]<186>, and then insert it into the Oil Pump Comp. [181]<181>.
NOTE: Confirm that the Oil Pump Piston Comp. [186]<186> operates.
Insert the assembled Oil Pump Comp. [181]<181> into the side hole of the Case [220]<220> as
passed from the oil tank to the gear chamber with the Oil Pump Piston Comp. [186]<186> side facing
up. Pass the Step Bolt A [180]<180> through the ring section of the Oil Tank Cap Ass'y [188]<188>
and tighten the Step Bolt A [180]<180> to temporarily secure the Oil Pump Piston Comp. [186]<186>
in place. Insert the Oil Pump Adjuster [217]<217> with the O-ring P-5 [178]<178> from the front hole of
the Case [220]<220> and then tighten the adjuster so that its male screw engages with the Oil Pump
Comp. [181]<181> until the attachment groove for the Stop Ring E-6 [218]<218> of the Oil Pump
Adjuster [217]<217> protrudes from the inner side of the oil tank of the Case [220]<220>. Once the
attachment groove protrudes out, attach the Stop Ring E-6 [218]<218> to the groove.
NOTE: Before attaching the O-ring P-5 [178]<178>, apply Turbine Oil 56 (JX Nippon Oil &
Energy) to its inner periphery.
Insert the Fuel Pipe 3 x 5 x 75 [215]<215> to the end of the Banjo, Oil Pump [216]<216>.
NOTE: At that time, do not apply ethanol, oil, or other treatment to the inner periphery of the
Fuel Pipe 3 x 5 x 75 [215]<215> and the Banjo, Oil Pump [216]<216>.
-15-

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