Hitachi D 900 Service Bulletin

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fl-lllACHIr SERlIléE BULLETIN ; 7 ..

Issued on 29_ .l a

. 551/4392 Issued by lake.
moDELS ____,,_d._,_,r-e ,D-900 7_,_,..~_.__.__ Serial N°-' T-l
-- " " ' (of factory)
DESTINATIONS *-

SUBJECTmwmggtfifmlflaélgperat1.9:! _.

1. Reasons

fiBIJfi_gpAera§orL of some units is imnossiQLe or abno-zggal sound is
} __ge;n.g1;ated after REX; Operation caused bv drift of the slider clamp

_ins:l:alla.tion._pnsition, SLtheJhapLfiJILQjMOJLQET hast____

MgeLaanlmeLnlampJasJeenlemoved.

1. Details of changes

(A) New puts liter changes (3) Original put: before changes
:No, Parts No. Description 32:: * Parts No. Description [30s.]?
i
! 6746293 Slider holder 30 [TB 6746292 Slider holder
! - |
i . A B
I..- _ _ A
l ' r3
! _ ____ _-
i J Us
1 . , _ .__
* hCFChlflle'hhY A B: A can be I substituele for B. A B: B can he I substitute for A.

H -. .- -x-
A B: Both A B and A B Ire possible A B: No: inlerclnngenble.
i 3. Illustration

*9
i
I
1
l

Afler elianges H V Before changes

4. How to dispose of original puts in neck. (1) Use (2) Scrap
i 5. Execution

Model 7 Serill No. When 2 Model i Serial No. When
i _- *" ""_ 1
L 22- 200 from (904LX lfrom H _ . __ gum from
5 _ "_ from ____._1 {Elna ! from from

! I67Remnrks

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'TfZLT'" 17'.Tfii*" AT, ,, W , , ,,,, l i .- ,____,I l _
{No-VA l , HITACHI SERVICE BULLETIN [Issued ongg mar .79
I 4:41 031/ """"" W arr-7

Issued by __L9L-_

MODELS 17-900 Serial No. 3.142
-7m 1 -_¥ _> - (of factory)

DESTINATIONS

SUBJECT Change 0'? flvwheel

l. Relsons
The capstan is short and there is danger of part of the
pinch roller being deformed.so the length of the capstan has
been lengthened bv 1.5mm.
j __
A

I- 2. Deuil: of changes

(A) New parts after chlnges (B) Original parts before changes

Noll Puts No. l Description 132;: * Puts No. Description its,
"rA ...,...l , _ I.
l
> 63731_7_?,,,,, ,, Flyvzltqe}(_12_Lh__ go .33 637260? Flywheel

5 6373194 F1ywhee1(1.) 210 7;! 6372587 Flywheel
} n
l ...7 .l
l n
l * Interchangeability A-é: A can be a substituete for B. n: B can be a substitute for A.

4-D -. .- +
A B: Both A B and A B are possible. A B: Nut interchangeable.
I

Lg. Illustration

x,- f After changes 7 Before changes

l 4. How to dispose of original parts in stock. (I) Use (2) Scrap

i 5. ExeCIItion

Model l Serial No. When

u r-~~--'+

Model V1 Serial No. When

I from from

r---

i

J from from

l-G. Remarks