Hitachi DB 3DL2 Technical Data And Service Manual page 16

3. Reassembly of the manual tightening mechanism
(1) Mount the Lock Ring [16] to the Gear Case [12]
so that the protrusion of the Lock Ring [16] is
aligned with the concave portion of the Gear Case
[12]. At this time, mount the Lock Ring [16] so that
the stepped protrusion faces forward.
(2) Mount the Needle Roller Set (6 pcs.) [17].
NOTE: Do not apply grease to the Lock Ring [16]
and Needle Roller Set (6 pcs.) [17].
4. Reassembly of the deceleration mechanism
(1) Apply a sufficient amount of grease (Hitachi Motor Grease No. 29) to the engaging portions of each gear
and the needle roller unit, and the contacting surfaces of the steel balls of the ring gear.
(2) Mount the parts from the Pin Set (3 pcs.) [14] to Washer (A) [29] to the parts assembled in the following
(b) in order.
(a) Mount the Pin Set (3 pcs.) [14] and Steel Ball D3 [15].
(b) Pay attention to the mounting direction of the Ring Gear [21], Carrier [19], Pinion (C) [23] and Pinion
(B) [26].
• Mount the parts
Planet Gear (C) Set [20]
Carrier [19]
Ring Gear [21]
Washer (B) [22]
Pinion (C) [23]
Planet Gear (B) Set [24]
Needle [18]
Slide Ring Gear [25]
Pinion (B) [26]
Planet Gear (A) Set [27]
First Ring Gear [28]
• Mount the Lock Ring and the Needle Roller Set
Lock Ring [16]
Protrusion
Stepped portion
Gear Case [12]
Washer (A) [29]
-13-
Needle Roller Set
(6pcs.) [17]
Concave portion
Gear Case [12]
Pin Set [14]
Steel Ball D3 [15]
Lock Ring [16]
Needle Roller Set [17]