SHARP SP2005 Technical Report

Date: May. 13, 1996

COPIER : Z-52

No. : SP-2005

PREVENTING THE GEAR IN THE CLUTCH FRAME UNIT
FROM BREAKING

1.Model Name: Z-52/52ΙΙ/57/57ΙΙ

2.General: The table may lock if it is returned while carrying more than 20 Kg of weight, or strikes a

wall or other obstruction in its movement range. When this happens, the clutch unit has
to bear an unusually heavy load. This often results in the breakage of the 16T gear,
which is the weakest part of the clutch unit. The following steps are being taken to
prevent this.

3.Description: Some of the parts of the clutch unit have been changed in order to prevent this problem.
The part codes for those parts have changed as a result.

Changing or adding the appropriate parts to the old clutch unit bring it to the same level
as the new one. (See the appended sheet)

SHARP CORPORATION Reprography Division

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Green

C

Before the change

R idle 22T
(NGERH0816FCZZ)
(discontinued)

After the change

E ring E-4(TSER040W)

R idle boss
(LBOSZ1392FCZZ)

22T gear color
(PCLR-0383FCZZ)
(discontinued)

↓

Polyslider x1 (LX-WZ0291FCZZ)
t0.13 Inside radius ø5.2 Outside radius ø8.0

Clutch ratchet gear x1
(NGERH1070FCZZ)

Clutch ratchet board x1
(LPLTP4951FCZZ)

Clutch ratchet spring x1

Apply a grain of rice’s worth
of white grease Apply about
half a grain of rice’s worth of
white grease (Moricoat
X5-6020) between the
polyslider ratchet gear faces.

Apply about a quarter of
a grain of rice’s worth of
white grease (Moricoat
X5-6020) to each of the
six locations.

(MSPRC2333FCZZ)

Clutch guide gear x1
(NGERH1069FCZZ)

Apply a grain of rice’s
worth of white grease

Polyslider x1
(LX-WZ0291FCZZ)
t0.13 Inside radius ø5.2
Outside radius ø8.0

4.Action:∗ Chinese (GE) production From the first unit of November, 1995 production on.
French (SMF) production From the middle of April, 1996 production.

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