
MODIFICATION BULLETIN NO. 5505-31 Page 1 of 2 ISSUED ON: December 15, ’90
Model RICOH AUTO PRINTER AP4600/4700 Volt/Hz
Modified Article Solid Cam And Follower AP4600 Oct. ’90 12658 ∼
AP4700 Oct., ’90 21567 ∼
Draw
No.
Reason for
To increase durability of the solid cam and follower
Modification
Old
Parts No.
55016079 55057226 Solid Cam and Follower Pair 1 ---- 1 X/O 67 1-52
New
Parts No.
Description
A.B.C.
Rank Part No. Description Index No. Page
Q’ty Used
Old → New
Inter-
change-
ability
Part needed for replacement by new part Parts Catalog
Date of
Modification
Serial Number
Rank: A : Replace with new parts immediately. B : Replace with new parts at time of repair. C : Replace with new parts at time of overhall.
Interchangeability:
(1) When old and new parts are not mutually interchangeable, use additional parts or an assembly part as indicated in "Parts needed for replacement by new part" to
install the new part.
(2) The mark to the left of the slash indicates whether the old part can be used in the new machine, and the mark to the right indicates whether the new part can be used
in the old machine. x = Not interchangeable o = Interchangeable

DETAILS OF MODIFICATION
To increase durability of the solid cam and follower, a new hardening process has been adopted on th e
To increase durability of the solid cam and follower, a new hardening process has been adopted on th e
To increase durability of the solid cam and follower, a new hardening process has been adopted on th e
production line.
production line.
production line.
MODIFICATION BULLETIN NO. 5505-31 Page 2 of 2 ISSUED ON: December 15, ’90
New P/N 55057226 (Solid Cam and Follower)
T. Ito, Manager
Copier Technical Support

MODIFICATION BULLETIN NO. 32 Page 1 of 2 ISSUED ON: October 15, ’91
Model RICOH AUTO PRINTER AP4600/4700 Volt/Hz
Modified Article Paper Delivery Section
Reason for
Parts standardization with the other model
Modification
Draw
No.
Old Parts
No.
A 55014740 55010247 Delivery Side Plate 2 → 2 X/X X/O as a set 72 I-28
B 55014770 55010250 Rear Delivery Roller 2 → 2 X/X 70 I-28
C 08053036 08053087 Ball Bearing - 10 x 26 x 8mm 2 → 1 X/X 112 I-28
D 07200060Z 07200080Z Retaining Ring - M8 2 → 2 X/X 113 I-28
New Parts
No.
Description
A.B.C.
Rank Part No. Description Index No. Page
Q’ty Used
Old → New
Inter-
change-
ability
Part needed for replacement by new part Parts Catalog
Date of
Modification
Serial Number
Rank: A : Replace with new parts immediately. B : Replace with new parts at time of repair. C : Replace with new parts at time of overhaul.
Interchangeability:
(1) When old and new parts are not mutually interchangeable, use additional parts or an assembly part as indicated in "Parts needed for replacement by new part" to
install the new part.
(2) The mark to the left of the slash indicates whether the old part can be used in the new machine, and the mark to the right indicates whether the new part can be used
in the old machine. x = Not interchangeable o = Interchangeable

MODIFICATION BULLETIN NO. 32 Page 2 of 2 ISSUED ON: October 15, ’91
DETAILS OF MODIFICATION
For parts standardization, the following parts [A], [B], [C], and [D] have been modified as shown be low.
Due to this modification, the previous part (55014740) is no longer available.
[D]
Old Type
[A]
[B]
[C]
Shaft Diameter of Side Plate [A] : 8mm 10mm
Bearing Size [C] : 8φ x 16φ x 5mm 10φ x 26φ x8mm
07200080Z
New Type
08053087
55010247
55010250
T. Ito, Manager
Copier Technical Support