Hitachi DB 10DL Technical Data And Service Manual page 18

(3) Reassembly of the manual tightening
mechanism (Fig. 7)
(a) Mount the Lock Ring [18] to the Gear Case [12]
so that the protrusion of the Lock Ring [18] aligns
with the concave portion of the Gear Case [12].
At this time, mount the Lock Ring [18] so that its
flat portion faces the opening of the Gear Case
[12] as shown in Fig. 7.
(b) Mount the Needle Roller Set (6 pcs.) [16].
NOTE: Do not apply grease to the Lock Ring [18]
and the Needle Roller Set (6 pcs.) [16].
Otherwise, the manual tightening
mechanism may operate poorly.
(4) Reassembly of the deceleration mechanism
(a) Apply grease (Hitachi Motor Grease No. 29) to the engaging portions of each gear, Pin Set [14] and the
contacting surface of the Ring Gear [20] with the Steel Ball D4 [15] properly.
(b) Mount the parts from the Pin Set (6 pcs.) [14], Steel Ball D4 [15], Ring Gear [20], Carrier [19] and
Planet Gear (C) Set [17] to the part assembled in the above (3). Then mount the parts up to Washer (A)
[28] in order (Fig. 8).
Mount the Pin Set (6 pcs.) [14] first then mount the Steel Ball D4 [15].
Pay attention to the mounting direction of the Ring Gear [20], Carrier [19], Pinion (C) [22] and Pinion
(B) [25] (Fig. 8).
Check that the Needle [13] is mounted between Washer (B) [24] and the First Ring Gear [27].
Fig. 8
Steel Ball D3.5 [11]
Ring Gear [20]
Washer (C) [21]
Needle [13]
Gear Case [12]
Lock Ring [18]
Planet Gear (B) Set [23]
Pinion (C) [22]
Washer (B) [24]
Fig. 7
Needle Roller Set (6 pcs.) [16]
Protrusion
Stepped portion
Pin Set (6 pcs.) [14]
Steel Ball D4 [15]
Needle Roller Set [16]
Carrier [19]
Pinion (B) [25] First Ring Gear [27]
Planet Gear (A) Set [26]
-15-
Flat portion of
the Lock Ring [18]
Opening of the Gear Case [12]
Flat portion
Lock Ring [18]
Planet Gear (C) Set [17]
Washer (A) [28]