Citizen CL-E720DT, Technical Manual

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Chapter 3 Disassembly and Maintenance
3-6. Disassembly, Reassembly and Lubrication
CL-E720DT
3-26
3-6-11. “Unit Head” and “Unit PF”
1. Remove the “Cover PF Motor”. Refer to “ 3-6-2 Cover PF Motor ”.
2. Remove the “Unit Opepane”. Refer to “3-6-3(1) Unit Opepane ”.
3. Remove the “Case” and “Cover Steel L”. Refer to “ 3-6-4 Case ”.
4. Remove all connectors from the “SA Main PCB”. Refer to “ 3-6-5(1) “SA Main PCB”
Connectors ”.
5. Remove the “Unit Mechanism”. Refer to “ 3-6-6 Unit Mechanism ”.
6. Remove the 1 screw (BH M3.0x4 (NI)) (

) and detach the earth wire of the “Unit Head” (

).
7. Open the “Unit Head” (

) and disengage the “Spring Head Up” (

).
NOTE: At this time, hold the “Unit Head” (

) as it can fall off.
8. Disengage the 1 E-ring (E-Ring 4.0) (

), and then remove the 1 screw (NO2 PH (SW+PW)
M4.0x16 (NI)) (

) and “Shaft Head Holder” (

).
9. Remove the “Unit Head” (

) from the “Unit PF” (

).
Notes on reassembling:
• When assembling parts, apply FLOIL G-311S to the following places shown by the mark “

”.
A : Hole (front left). Circumference surface of the hole (on both sides) and inside the hole
B : Hole and projection (rear left). Circumference surface of the hole (on both sides) and along
the projection surface.
C : Along the contacting surface (rear left).
D : 3 surfaces on the “Shaft Head Holder” (

).
Hooks for “Spring Head Up” (

) (2 places)
• When mounting the “Shaft Head Holder” (

), be sure that its mounting direction is correct.
D
FLOILG-311S
C
B
A
FLOILG-311S
FLOILG-311S
FLOILG-311S
FLOILG-311S
Shaft Head Holder
[Left side view]
BH M3.0x4 (NI)
Spring Head Up
E-Ring 4.0
NO2 PH (SW+PW)
M4.0x16 (NI)
Unit PF
Unit Head
2
4
5
3
1
6
7