Pentax S3 Service Manuals

PRODUCT NO.2 30 -2

ASAHI PENTAX S3

SERVICE MANUAL

230-2 -1-

TABLE OF CONTENTS

INTRODUCTION.....................……………………………............................................................... 4

SUMMARY OF STRUCTURE AND PERFORMANCE ......……………………….....................… 4

CHAPTER I. DISASSEMBLY......................................…………………………...................... 8

1. Disassembly of Cover Plates, Rapid Wind Lever and Rewind knob..................................... 8

a. Rapid Wind Lever (C03)
b. Shutter Speed Dial (E23)
c. Rewind Knob (D06)
d. Top Cover Plate (A03)
e. Front Cover Plate (A05)
f. Bottom Cover (A04)

2. Disassembly of Mirror Housing and Optical Parts .........………………………………. 9

a. Prism Seat (B01)
b. Mirror Housing (B02)
c. Mirror (AF12)

3. Disassembly of Top Transport Mechanism..................………………………………… 10

a. Wind-Up Lever Seat (C35)
b. Lever Stopper (C10)
c. Top 1st Gear (C20)
d. Wind-Up Lever Shaft (C34)

4. Disassembly of Bottom Transport Mechanism .......………………………………….... 11

a. Bounce Stopper Actuator I Lever (E98)
b. Coupler Lever (C15)
c. "R" Lever Parts (C70)
d. Pin Adjust Plate (C17)
e. Wind-Up Shaft Parts
f. Sprocket Shaft (C30)

5. Disassembly of Shutter Mechanism ..............…………………………………................ 12

a. Shutter Gear Mechanism
b. Shutter Curtain Parts

6. Disassembly of Mirror Housing Mechanism .......………………………………….......... 16

CHAPTER II. ASSEMBLY AND ADJUSTMENT ...................…………………................ 18

1. Assembly and Adjustment of Shutter and Transport Mechanism......................................... 19

a. Shutter Curtain Parts
b. Stopper (C1I)
c. Idling Gear Parts
d. Wind-Up Lever Seat (C35) and Top 1st Gear (C20)
e. Bounce Stopper Mechanism
f. Pinion Coupler Lever (E10) and Coupler Lever (C15)

2. Adjustment of Shutter Exposure Timing.......................………………………………….... 29

a. Curtain Speed
b. High Speed Exposure Timing
e. Irregularity of Exposure Timing
d. Slow Speed Exposure Timing
e. Time Exposure
f. Exposure Timing at Various Points on the Picture

3. Assembly and Adjustment of Exposure Counter ....…………………………………........ 34

4. Adjustment of X Contact .....................................……………………………………....... 36

5. Adjustment of FP Contact................................……………………………………........... 37

6. Adjustment of Mechanical Back........................…………………………………............. 37

7. Adjustment of Viewfinder Focus..........................………………………………….......... 38

CHAPTER III. FINAL TESTS..................................…………………………....................... 40

CHAPTER IV. CAUSES OF DEFECTS AND SERVICING.......……………………........... 44

ATTACHMENTS
List of Special Service Tools
List of Lube Oils
List of Bonds Exploded Illustrations
List of Service Parts
List of Standard Parts

Page

230-2 -2-

INTRODUCTION

This Service Manual is prepared for servicing Product # 230 2; however, since the following products have
structures similar to 230 2. This Manual will also apply to these products:

Product # Model Description Major Difference

229-2 S1. H1. S2. H2 Semi-automatic diaphragm.

230 S3. H3 Old-type fully automatic diaphragm.

229-3 S1. H1. S2. SB. SB2

232 SV. H3v Self-timer, automatic re-setting film counter.

230-3 Sla. Hla, S2 Automatic re-setting film counter.

SUMMARY OF STRUCTURE AND PERFORMANCE

Upon cocking the rapid wind lever, the bounce stopper mechanism is first released, the shutter curtains are
wound, and the mirror actuator lever, bottom (B19) tensions the mirror seat spring (B44) and the dia lever
spring (B72).

When the shutter button is depressed, the bulb lever will be so positioned as to prevent rotation of the bottom
selector gear (E44) which is connected with the 2nd curtain, and at the same time will contact the high speed
cam (E85) which selects the high speed exposure timing. Further, the spill (E08) will come down, freeing the
top idling gear (E17l, thus making the exposure ready to be made.

When the shutter button is depressed by 1.2mm to 1.7mm, the 2nd dia lever (B54) will be released and will start
rotating rapidly, and the 1st dia lever (B53) which couples with the 2nd dia lever will press the automatic
diaphragm release pin.

During the rotation of the 2nd dia lever, the reflex mirror is released and starts flipping upward. While the
mirror is flipping up, the FP contact is switched in, and the curtain actuating lever is pressed up, starting the
travel of the 1st curtain.

At the instant the 1st curtain passes the picture format, the X contact is switched in, and the bounce stopper
functions and then stops.

The shutter exposure timing can be determined by turning the shutter speed dial. The shutter speed dial has a
slot to be coupled with the Asahi Pentax clip-on exposure meter. As the shutter speed dial is turned, the centre
slot of the high speed cam moves eccentrically, and added to the shape of the high speed cam, high speed
exposure timing is determined (from 1/30 to 1/1000 sec). Slow speed exposure timing (from 1 to 1/15 sec.) is
determined by the slow speed cam (F0l), which changes the operating time of the slow speed governor located
underneath the mirror housing, as the shutter speed dial is turned within the slow speed range.

With the shutter speed dial set at "B" the high speed cam floats, and since the top bulb lever (E06A) does not
contact the high speed cam, the 1st curtain starts travelling when the shutter button is depressed, however, the
2nd curtain stays without travel. The 2nd curtain will start travelling only after the shutter button is released.

With the shutter speed dial set at "T" the slow speed cam causes the time stopper (F03) to check the movement
of the slow speed actuator lever (F06), and contrary to the "B" position, the 2nd curtain will not start travelling
even after the shutter button is released, but will start its travel only after the shutter speed dial is turned either to
the direction of "B" or 1/1000.

Just prior to the completion of travel of the 2nd curtain, the pin of the coupler gear (E18) rotates the pinion
coupler lever (E10), and the bottom actuator lever spring (B47) causes the mirror actuator lever (B19) to return
to its original position. As the 1st and 2nd levers are also placed back to the original position, the automatic
diaphragm of the lens reopens again.

Actual time required from the start of the rotation of the 2nd diaphragm lever by depressing the shutter button to
the completion of all these performance is not more than 40 ms. Needless to say, in the case of slow speed

230-2 -3-

exposure timing, the time required will be that much prolonged.

For facilitating better understanding of this Manual as well as for convenience of the reader when making
requisition for interchangeable parts and/or tools, lists and diagrams are attached herewith as Attachments.

Explanations with respect to disassembly are given in the order of work to be performed, while those pertaining
to assembly are described in the order opposite to the work of disassembly. No explanation is offered
concerning easily understandable disassembly and, or assembly. In case of a partial disassembly or assembly,
proceed with it on the basis of information contained in this Manual, making reference to such explanations as
may be considered pertinent to such need.

Classification of Part Numbers:

Service part numbers are given always starting with 01, according to each mechanism, and mechanisms are
classified in an alphabetical order as follows:

A Cover Plates, Back-Cover
B Mirror Housing, Prism Seat
C Film Winding Mechanism
D Film Rewinding Mechanism
K Shutter Mechanism
F Shutter Slow-Speed Mechanism
G Slow Speed Governor
AF Optical Parts

Standard Parts:

Service parts commonly used for all our products are called "Standard Parts" and the classification is as follows:

W Washer (except for those with special shape)
LW Lock Washer
R Rivets (except for those unavailable on the market)
Small Screws (except for those other than the standard dimensions)

Of the above, index numbers alone are quoted in the Manual to indicate standard small screws for the sake of
brevity. However, the index numbers shown are those applicable only to this Manual for 230-2, and should
therefore never be quoted, say, when making requisition for service parts or in technical communication.

Attachment 5 -- List of Service Parts -- may be modified or revised when alterations or improvement in some of
the listed items are deemed necessary, or when assembled parts are altered for various other reasons.
Please note, however, when such alterations or modifications are initiated, a new complete List of Service Paris
or a notice thereof will be mailed to you.

230-2 -4-

CHAPTER I. DISASSEMBLY

NOTE: As red lacquered spots are the spots securely fixed after making necessary technical adjustment,
do not unscrew such spots unnecessarily. When removing springs, care must be exercised so as not to
give any deformation to the springs; also refrain from taking out springs with bare fingers.

1. Disassembly of Cover Plates, Rapid Wind Lever and Rewind Knob.

a. RAPID WIND LEVER (C03)

Take out the arrow ring retainer screw (C54). When the counter screw (C36) is removed, using special
tool No. 225K-C36-A, the counter (C12) and counter spring (C60) can be taken out.

When the actuator lug screw (C53) for the advance lug actuator (C07) is taken out, 2 screws (C73) for
(C03) can be removed. As (C03) is securely fixed with a binding agent to the upper surface of the wind­up lever seat (C35), dissolve the binding agent, using such solvent as Methyl-ethyl-ketone or Acetone,
before attempting to remove the screw. Remember that in our current products a binding agent is used
not on the surface of the wind-up lever seat (C35) but on the rapid wind lever retainer screw (C73).

b. SHUTTER SPEED DIAL (E23)

With the shutter dial set at " B," remove 3 small screws (23) and you will find it easier to perform
disassembling.

c. REWIND KNOB (D06)

With a screw driver or a similar tool inserted into the fork of the rewind shaft (D05), which goes into one
end of a film cassette, rotate the crank (D10) counter-clockwise more or less forcibly and unscrew it. If
the flat nut (D09) is taken out, using special tool No. 225K-D09-A, the film type dial washer (D02) and
film type dial (D08) will come out simultaneously.

d. TOP COVER PLATE (A03)

Take out 1 screw (18) on the upper side of the top cover plate (A03) and then 2 screws (19) on both sides
of the finder eye-piece and push the plate strongly upward.

e. FRONT COVER PLATE (A05)

Remove 4 screws (19) and you will find the front cover adjust washer (A39) between the front cover
plate (A05) and the body proper (A01); this is intended for the mechanical back to be 45.46mm. In the
event (A05) is not replaced, fix the plate at time of reassembling to its original place, and correct
dimensions can be maintained without making adjustment.

f. BOTTOM COVER (A04)

Remove 2 screws each (18) and (16).

2. Disassembly of Mirror Housing and Optical Parts.

a. PRISM SEAT (B01)

Take out 3 screws (13) by tightly holding the prism seat (B01) with fingers to protect it from floating by
the elasticity of the ground glass holder (B79). The prism (AF17) should not be dismantled from the
prism seat (B0l) as far as possible, but when it is to be removed, unscrew either one of the 2 adjustment
screws (21).

b. MIRROR HOUSING (B02)

Unloose the screw (I) of the lug plate (B77) at X contact on the bottom part of the body proper (A0l),
slowly correct the cord B (B73) with tweezers to make it straight, remove 2 screws (11) and 2 screws
(B71) and take out the mirror housing (B02) slopewise frontward. While taking the mirror housing out,
push it in the direction of B02 so as not to let the curtain actuator lever IB20I hook up the body proper
(A01). Care must also be exercised not to let the cut opening of the mirror actuator lever, bottom (B19),
hook up the edge of either the coupler gear (E18) or the coupler lever (C15).

c. MIRROR (AF12)

Press inward the front edge of the mirror (AF12), say, with the tip of tweezers, and 2 front claws of the
mirror retainer plate (B12) will come off, thereby floating the mirror.

230-2 -5-

NOTE: Never touch the surface of the mirror with a fingertip or any kind of tool. If the mirror gets

dusty, use a soft brush or a blower to dust it off.

3. Disassembly of Top Transport Mechanism.

a. WIND-UP LEVER SEAT (C35)

Press the edge of the spring (Cl9) with finger to prevent it from recoiling, and then take out (C35) from
the wind-up lever shaft (C34), after which if (C19) is properly fixed to (C 35), using shape wire, the
trouble of recoiling the spring can be dispensed with at time of reassembling. (Diagram 1)

NOTE: When recoiling (C19), do it with gloves on. If handled with bare fingers, the spring trends to be

rusted.

(Diagram 1)

b. LEVER STOPPER (Cl0)

Take out 2 screws (15) and 2 stopper washers (C68).

c. TOP FIRST GEAR (C20)

Prior to taking out the top 1st gear (C20), mark the body proper (A01) with a dot, indicating the spot
extended from the corner of either one of the two projected points and an accurate angle can be easily
determined when reassembling. (Diagram 2)

(Diagram 2)

Mark here with a dot

d. WIND-UP LEVER SHAFT (C34) Unloose 3 screws (17).

4. Disassembly of Bottom Transport Mechanism.

a. BOUNCE STOPPER ACTUATOR LEVER (E08)

Remove the bounce stopper lever screw (E103) and ease the bounce stopper actuator lever screw (E100)
and take out; he bounce stopper lever (E99) and bounce stopper spring (E102) with particular attention to
the washer W3—located beneath (E98).

NOTE: When (E98) is removed, (E99) must also be taken out, because once (E98) is dismantled, (E99)

is invariably placed in a position where the bounce stopper mechanism is at work, and if, by any
chance, the shutter is cocked, the 1st curtain will thereby very likely be damaged.

b. COUPLER LEVER (C15)

Remove the coupler lever retainer screw (C80).

230-2 -6-

c. "R" LEVER PARTS (C70)

As the "R" button is screwed in, remove it by turning it counter-clockwise
forcibly with finger. When the "R" lever retainer screw (C52) is taken out,
the "R” lever spring (C62), "R” lever (C70), W9 and bottom 1st gear (C25)
will come out from the lower bottom 1st gear shaft (C46).

d. PIN ADJUST PLATE (C17) Remove the screw (14) and then unloose 2

screws (23).

e. WIND UP SHAFT PARTS

Press the top main gear (C23), using special tool No. 225K C23 A, and take
out the bottom main gear (C24) by turning it counter-clockwise and thereby
unscrewing it, using special tool 225K C24 A. (Diagram 3)

NOTE:

1. Do not turn (C23) counter-clockwise under any circumstances.

2. W17(s) located at the upper and lower parts of the spool brim are intended for adjusting the weight of

load on the rotation of the spool, in view of which their number and location have to be remembered.
The wind-up shaft bearing (C32) should be taken out along with the wind-up shaft (C 31) by
loosening 3 screws (17), and then the top take-up spool brim (C13), the bottom take-up spool brim
(C14) and the take-up spool shaft (C33) will come off.

REFERENCE:

The center diameter of (C31), in some cameras, is found narrower for it is intended to lighten the
camera weight and should be considered as an improvement.

f. Sprocket Shaft (C30)

Take out the coupler lever seat (C16), sprocket seat spring (C63) located beneath the seat, and then the
sprocket cover (A06). Unloose the sprocket screw (C56), and the bottom 3rd gear assembly (0C27) can
be easily taken out from the body proper.

5. Disassembly of Shutter Mechanism.

NOTE: When disassembling the shutter mechanism, close attention must be paid to the coupling relations

and locations of various gears.

a. SHUTTER GEAR MECHANISM

(1) Pinion Coupler Lever (E10)

Unloose the pinion coupler lever retainer screw (E52), and (E10) and the underneath washer (W2) can be
taken out.

(2) Coupler Gear (E18)

Unloose the coupler gear retainer screw (E53), and (E18) can be taken out together with the underneath
washer (W3)

(3) Coupler Pinion (E13)

Insert a driver through the cut-opening located at the back of the bottom part of the body, unloose the
coupler pinion screw (E88), and forcibly pull it out from the 2nd curtain pinion shaft (E32).

NOTE: Care must be exercised not to press the driver too hard; otherwise (E32) might be bent.

(4) Shutter Rod (E29)

Remove the actuator rod (E30) by turning it counter-clockwise. Remove LW17 from the idling gear
retainer screw (E50), and then (E30) can be taken out upward from the body proper.

REFERENCE:

In the event the idling gear parts alone are to be taken out for disassembling or washing purposes, do not
go through the trouble of removing the mirror housing or the shutter rod (E29); just remove the release

230-2 -7-

plate (E05) by loosening the release plate nut (E119), and the desired parts can be taken out.

(5) Slow Speed Rod (F12)

Ease the cam coupler plate nut (F11), using special tool No.225K-FII-A, remove the cam coupler plate
(F02). Then remove LW13, intended to check up-and-down movement of the slow speed rod (F12), and
the governor at the bottom of the body proper and its coupling parts can be taken out at the same time in
one body from the bottom parts of the body proper.

(6) Speed Selector Disc (E68)

Take out the index ring (E24) from the speed gear shaft by unloosening 3 screws (23), and (E68) can be
also removed.

(7) Unloose 2 screws (9) for the click spring (E83), and it can be taken out along with the light seal (C87).

REFERENCE:

The light seal (C87) began to be installed in 230 2 at a later stage of production for the following reasons:
For Product No 232 (with self-timer), a top mec. plate (C01) with a cut opening is used in view of its
mechanical structure, and (C87) is accordingly installed for the purpose of insuring complete prevention
of light leakage. As, however, a change was effected to make use of (COD for 230-2 for 232 as well.
(C87) was added.
Consequently, in a case where (C0l) is devoid of any cut opening, (C87) is not required. (Diagram 4)

(Diagram 4)

(8) High Speed Cam Parts

Ease the selector shaft tube retainer screw (E117) and remove the selector collar (E25) from the selector
gear shaft (E26), and the high speed cam (E85) parts, the cam shaft spring (E56) and the cam shaft spring
receptacle (E79) can be taken out.
For disassembling the high speed cam parts, namely, (E85), cam shaft (E69) and cam shaft nut (E76), use
special tools No. 230K - E69 A and No. 230K - E76A.

(9) Bulb Lever Paris

By easing the bulb lever nut (E48), the bulb lever parts can be taken out in a body from the bulb lever
shaft (E27).

NOTE: Before attempting to remove the bulb lever parts, see to it that the bulb lever spring (E62) is

dismantled from the bottom Bulb lever (E06B).

(10) Idling Gear Parts

When the idling gear retainer screw (E50) is removed, the idling gear parts located beneath it, viz., the
spill receptacle plate (E09), top idling gear (E17), spill (E08) and bottom idling gear (E16) can be taken
out. Make sure to remove the spill rest (E21) beneath (E16) and the spill spring (E58) at the same time as
these are liable to be lost.

(11) Stopper (C11)

Ease 1 screw (12) and stopper nut (C92), and the stopper (C11) can be removed.

NOTE: Once the stopper (C11) is removed, the pinion rotates freely, thereby tending the shutter curtains

to strip off the shaft. Consequently, before attempting to remove C11, see to it that the tension of the
shutter curtain spring is weakened. (Refer to 5. b. 1.)

REFERENCE:

When the shutter curtains, 2nd curtain pinions (Ell) (E12), bottom selector gear (E14) and top
selector gear (E15) are not to be replaced with new ones, mark the exact coupling positions of the
gears before removing (C11) for the purpose of facilitating reassembling. (Diagram 5)

230-2 -8-

Diagram 5

b. SHUTTER CURTAIN PARTS

NOTE: When attempting to overhaul the shutter curtain parts, strict care must be exercised not to tear off

the curtain from the pipes; not to make a hole in the curtain with such tool as tweezers; and not to
stain them with oil.

(1) Curtain Spring Adjust Gear A (E92)

Put a driver into the slot of the curtain spring adjust gear A (E92i to prevent its rotation, take out the
curtain spring adjust lug (E42) from the gear, and then turn the driver slowly clockwise, thereby placing
the curtain spring back to its original position with no tension. For overhauling (E93), the same
procedure may be followed.

NOTE: The curtain spring should never be placed back to its original position rapidly. Put a driver into

the upper slot of the 1st curtain shaft (E33) to prevent its movement, and turn (E92) clockwise,
unloosening the screw to take it out. The curtain spring adjust gear B (E93) should also be
overhauled in exactly the same manner. Remember that (E92) and (E93) screw counter-clockwise.

(2) Sync. Gear (E104)

If LW13 is pulled out of the sync, gear column (E105), (E104) can be removed.

(3) Top Shaft Plate (E01)

When 2 pcs of LW13 and 2 pcs of screw (72) are removed, the curtain pipes and shutter curtains can be
taken out in a body from the body proper.

(4) Top Mec Plate (C01)

Ease the 1st curtain checker arm stopper (E86) and stopper column (C42), and the 1st curtain pinion
shaft (E31) and 2nd curtain pinion shaft (E32) can be taken out in a body from the body proper.

(5) Top Mec. Plate (C01) and Shutter Curtains
Ease 3 pcs of pinion shaft retainer screw (E55) and the 1st, and 2nd curtain pinion shafts (E31) (E32) can be
pulled out of (C01).

6. Disassembly of Mirror Housing Mechanism.

NOTE: Overhauling of the mirror housing mechanism may be made from any parts you desire, but the

following points must be borne in mind:

(a) Do not turn the red lacquer sealed 2nd dia. lever adjust screw (B59), because this screw is
adjusted to cause the rotation of the 2nd dia. lever (B54) when the shutter bottom is depressed to 1.2

- 1.7 mm.

(b) Do not ease the mirror seat rest screw (B13) which retains the mirror seat rest (B14). The

(B14) is properly adjusted to maintain the mirror at the correct 45° angle whenever it is down.

(c) Remember well the exact location of the washers located in between the mirror actuator
lever, top (B18), mirror actuator, bottom (B19) and mirror actuator lever shaft (B35), as the
washers are adjusted to prevent clearance of these parts.

230-2 -9-

CHAPTER II. ASSEMBLY AND ADJUSTMENT

In this Chapter II, photographs are shown, besides diagrams, in the order of assembling, where considered
helpful. For instance, photo No. 3 shown under 1. b, illustrates the assembled condition up to the stage of the
stopper (C11).

NOTE: Disassembled parts, before assembling, need a careful washing and or dusting with either a piece of

cloth or a blower. When servicing customers' cameras, discretion, of course, has to be exercised in
this respect, taking into consideration such factors as the model, period of use, nature of defects, etc.
However, the general rules are summarized below:

Parts equipped with rotating shafts and or shaft bearings have to be thoroughly washed with quality
gasoline or benzene. Especially such parts as are to be lubricated with "L" lubricants need a careful
washing and drying. However, pipes and governor parts containing curtains or springs should never
be immersed in cleaning liquid for washing purposes.

Exposed plated and anodised parts should be thoroughly wiped either with a brush or with a clean
piece of cloth. When stains are found, lightly wipe off the stained parts with a clean piece of cloth
soaked with liquid composed of ether and alcohol at the ratio of 60% and 40%.

Painted parts need only be lightly dusted with a brush. Stains on the outer surface of black cameras
should be wiped either with silicon-cloth (similar to the one usually used for wiping glasses and is
easily available on the market! or with the aforementioned liquid composed of 60% ether and 40%
alcohol, very lightly so as not to erase the white letters engraved on the cameras.

For wiping optical parts, mixed liquid comprising 70% ether and 30% alcohol should be used. In this
connection, a clean piece of cotton or hemp cloth, properly washed beforehand and entirely devoid
of starch, or a piece of soil paper is recommended for use.

For wiping parts made of plastics (such as Fresnel and ground glass), use mixed liquid composed of
50% ether and 50% alcohol, which gives satisfactory results.

The mirror should never be wiped with a piece of cloth under any circumstances. If wiped with such
material, it results in flaws. Dusts or dirts on the mirror need to be blown with a blower.

It is of utmost importance to abide by the instructions governing the right kind of lubricants,
lubricating positions and lubricant quantity. Lubrication needs to be performed strictly in accordance
with Attachment 2—List of Lube Oil —as wrong use of oil will invariably result in the deterioration
in performance or functioning of various parts and may cause defects.

1. Assembly and Adjustment of Shutter and Transport Mechanism.

a. SHUTTER CURTAIN PARTS

(1) After the shutter curtain parts are assembled, slowly rotate 2 or 3 times the 1st curtain shaft (E33)
and 2nd curtain shaft (E94) clockwise to tension the curtain springs. (Diagram 6) Final adjustment of the
curtain spring tension should be made at the time of adjusting the curtain travel speed mentioned
elsewhere.

Diagram 6

230-2 -10-

Photo 1

(2) Relative position of the shutter curtains and the bottom selector gear (E14), after assembling (E14) with

bulb lever parts, should be determined by gearing (El4) with (Ell) in the wound-up condition of the
shutter curtain as illustrated in Diagram 7. (E14) and the pinion shaft need oiling.

NOTE: When resetting the shutter curtains to the un-cocked condition, do it slowly. (Diagram 7)

Diagram 7

(3) After the top selector gear (El5) is mounted, the location of the 1st and 2nd curtain edgers (E03, E04)

should be adjusted as illustrated in Diagram 8. For winding the shutter curtains, use special tool No.
229K-E64, E65--A, and you will find the job easier.

230-2 -11-

Diagram 8

b. STOPPER (C11)

After installing the 1st curtain checker arm (E07) and the stopper (C11), the gap between the projected
point of the selector gear stopper (E77) and (C11) should be adjusted to be 0.2-0.3 mm in the cocked
condition. This adjustment should be made by turning the screw (22) which is screwed in through the
back of (A01). (Diagram 9)

Diagram 9

Location must be adjusted the tolerance of

0.5mm

Photo 3

c. IDLING GEAR PARTS

NOTE: Read carefully the following instructions and utmost caution should be exercised when adjusting

this part which is delicate in nature.
When installing the winding shaft parts, spill spring (E58), spill rest (E21), bottom idling gear (E16)
and spill (E08), slowly rotate clock-wise the top main gear retainer screw (C75) first with a driver,
while pressing downward (EOS) with the tip of tweezers. When the spill (E08) comes above the
groove of the idling gear shaft (E20), it falls into the groove, pushed against the direction of the
rotation of the various gears, preventing them from rotating. (Diagram 10)

Diagram 10

230-2 -12

-

Ease the force of (C75) and also the pressure on (E08), and the top main gear (C23), (E16) (EOS)
slightly turn backward with the tension of the wind-up shaft spring (C57); then the non-return arm (C04)
springs into the groove underneath (E16) and then stops. While maintaining this position, fix the top
idling gear (E17), paying careful attention to "t". (Diagram 11)

Diagram 11

Then putting on the spill receptacle plate (E09) and screw in with the idling gear retainer screw (E50).

NOTE: A tiny quantity of oil should be applied on (E20).

In a similar manner as described above, turn the top main gear retainer screw (C75) with a driver
until the selector gear stopper (E77) collides against (C11), then relax the force of the driver. The
idling gear part will then move backward slightly and stop in a manner as described above.

At the same time, the pin of the top selector gear (E15) comes to a stop, running against the tip of
(E07). Then slowly press downward the spill (E08); and if (E08) smoothly goes up and down, proper
adjustment has been completed.

If the gap "t" shown in Diagram 11 is too big, (E08) goes beyond the groove of (E20), if too small,
it will not reach the proper position, colliding against the brink of the groove, or resulting in creak,
when (E08) is pressed

In the event (E17) is replaced with a new one, if the groove of (E17) cannot be so properly
positioned even though the engaging position of the gears is changed, the groove needs adjustment
by filing with a fine file. (Diagram 12)

Diagram 12

NOTE: Before assembling (E17), oil or dirts in the hole, its surface and on the parts contacting (E09)

must be thoroughly cleaned and removed. Otherwise, exposure time of the shutter is liable to remain
unstable.

230-2 -13-

REFERENCE:

Photo 4

How to make adjustment if the pin adjust plate (C 17) is of the old type:
In the case of (C17) of the old type (prior to the introduction of the improved one), the range of
adjusting the position of the coupler lever pin (C51), after completion of the adjustment of the idling
gear, is slight; and accordingly, (E16) should be fixed along the groove of (E20), after correctly
positioning (C51) by turning (C75). Needless to say, it is possible to make a slight adjustment of the
position of (C51), even if (CI7) is of the old type.

Diagram 13

(Old Type)

Photo 5

d. WIND-UP LEVER SEAT (C35) AND TOP FIRST GEAR (C20).

Tightly screw the wind-up lever shaft (C34) and affix (C20) to the shaft. (As explained in Chapter 1, 3 c,
(C20) may be correctly positioned if matched to the mark properly made beforehand.) Fix the lever
stopper (C10), (C35) and the rapid wind lever (C03), and cock the lever fC03) thoroughly. When (C03)
is cocked completely, if the projected part of (E77) collide against (C11) and (C35) to the projected part
of (C10) simultaneously, or else the latter has an opening to the extent of 0.2 mm, proper adjustment
may be said to have been completed. (Diagram 14)

Diagram 14

(Improved Type)

230-2 -14

-

In the event a wide gap has been created on either parts, lift the top 1st gear (C20) and change its
engaging position with that of (C21). In the event any one of the gears on the upper part of the body
proper has been replaced, proper adjustment of the aforementioned gap may sometimes be found
impossible. In such a case as this where a delicate adjustment is called for, 5 kinds of the lever seat lug
(C05), each different in length, are available.

Diagram 14 C05-1 C05-2 C05-3 C05-

The Longest

NOTE: If (C10) and/or (C35) are filed off for the purpose of adjusting the gap, the rotating angle of

(C03) changes, in consequence of which it sometimes becomes extremely difficult or impossible
to adjust the counter assembly which is to be fixed on it.

Photo6

e. BOUNCE STOPPER MECHANISM

(1) When fixing the pin adjust plate (C17) to the bottom main gear (C24), determine the position of the
coupler lever pin (C51) and fasten the screws (14) and (23). ((Refer to Diagram 13.)

(2) The relative position of the bounce stopper lever (E99) to the sync gear (E104) is to be adjusted as

per Diagram 16. Upon completion of the adjustment, cock the shutter to ensure that the bounce
stopper (E97) will rotate smoothly without hooking up the bounce stopper lever (E99) at the initial
stage of cocking.

Diagram 16

Photo 7

C05-5

4

The

Shortest

230-2 -15-

f. PINION COUPLER LEVER (E10) AND COUPLER LEVER (C15).

After fixing the mirror housing assembly (0B02) and (E10) to the body proper, the following adjustment
has to be performed:

(1) Adjustment of (E10)

The "A" part of (E10), before shutter rocking, is supposed to be in parallel with the groove of the
body proper checked by the coupler gear stud (E46) of the coupler gear (E18) as shown in Diagram
17-A; and the position of (E46) is to be determined by the half-moon shaped slow speed lever
actuator stud (E45). (Refer to Diagram 19.) When the shutter is cocked, the "B" part of (E10) should
be so positioned as to slightly pass the brink of the groove of the body proper. In the event this
position is found unattainable, bend the "C" part of (E10) with pliers for necessary adjustment.
(Diagram 17-B)

A

Diagram 17

B

(2) Adjustment of (C15)

Before the shutter is wound, the tip of the mirror actuator lever, bottom (B19), is located close to (E18).
In the course of winding the shutter, it slides along the groove of the body proper, forced by the tip of
(C15). When (B19) is positioned closest to the back of the body proper, the gap between (B19) and
(E10) should be adjusted to be within 0.3-0.5 mm. This adjustment is to be performed by bending the
"D" part of (C15) with a pair of flat-nose pliers. (Diagram l7-B)

NOTE: In case (C15) is bent too much, (B19) will collide, during the course of winding, against the back

of the body proper, resulting in heavy winding or failure in cocking.

Photo 8

2. Adjustment of Shutter Exposure Timing.

After installing the speed dial (E23), the shutter exposure time is to be adjusted in the following order.
However, covers such as (A03). (A04) and (A05) should be left unassembled.

230-2 -16-

(1) Adjustment of curtain travel speed.
(2) Adjustment of high speed exposure timing (l/1000 sec-1/30 sec.).
(3) Adjustment of slow speed exposure timing (1/15sec.- 1 sec.)

a. CURTAIN SPEED

The curtain travel speed is the time required for the shutter curtains to run through the picture format (36
mm). In this model, the speed is adjusted to be 16.5 +/- 0.3 ms under the ambient temperature of approx.
20o C.

The adjustment has to be performed in the following order:
(1) Set the speed dial (23) at 1/1000.
(2) Disassemble the curtain spring adjust lug (E42) from the curtain spring adjust levers A and B (E92)

(E93), and slowly put the curtain spring back to its original free-of-tension position (in the event it
was wound 2 or 3 times when installing the curtain assembly).

(3) Tension the curtain spring by rotating (E92) 5 times, and (E93) 7 times.
(4) By adjusting the curtain spring, make necessary adjustment of the curtain travel speed so that it

comes within the tolerance of the aforementioned value.

b. HIGH SPEED EXPOSURE TIMING

High speed exposure timing is to be adjusted by changing the width of the slit formed by the 1st and 2nd
curtains. Ease the bulb lever adjust nut (E87) using special tool No. 225K E48-A, and if the screw (20)
is turned clockwise, the exposure timing will be faster; if turned counter-clockwise, the exposure timing
will be slower.

First, adjust the exposure timing for 1/125 sec. (8 ms) and 1/60 sec. (17.8 ms) to their rating or nearest to
it. Then turn the speed dial to 1/1000 sec. (1 ms) and 1/500 (2 ms) for measuring purposes, and repeat
this procedure until satisfactory exposure timing is obtained. Once the above mentioned exposure timing
is determined, exposure timing for the other speeds may be determined automatically by dint of the high
speed cam (E85). Lastly, (E85) should be sealed with red lacquer. (Diagram 18)

Diagram 18

In the event the shutter curtains, high speed cam and bulb lever parts are not replaced, correct exposure
timing may be obtained merely by adjusting the curtain travel speed, without adjusting the screw (20).

c. IRREGULARITY OF EXPOSURE TIMING

If the exposure timing differs each time the shutter is released, it is called "irregularity of exposure
timing." Strictly speaking, it is extremely difficult to maintain exposure timing entirely free of
irregularity. However, major causes (or irregularity may be traced to the following:

(1) When the top idling gear is oiled or stained.

(2) When the high speed cam (E85) is dusted and or not properly oiled.

(3) When the bottom selector gear (E14) is not properly oiled.

(4) When the 1st, 2nd curtain pinion shafts (E31) (E32), and the shaft receptacle parts of both top and

bottom mec plates (C01) (C02) are not properly oiled.

(5) When the curtain roller metal made of brass (E37) is not properly oiled.

NOTE: No oiling is required where plastic material is used.

230-2 -17-

d. SLOW SPEED EXPOSURE TIMING

Slow speed exposure timing can be determined by adjusting the exposure timing for 1/15 sec (6.7 ms),
and the exposure timing for the rest (1/8-1 sec) may be determined automatically by dint of the slow
speed cam (F01). Better stability of the exposure timing can be expected if the timing for 1/15 sec is
adjusted so as to be very slightly prolonged, viz., 7-8 ms.

First, see to it that the contact between the slow speed lever (F07) and the slow speed lever actuator stud
(E45) of the coupler gear (E18) is made closer to the entrance of the opening of the governor assembly
(0G00). In other words, adjust and set the shutter exposure timing to be a little faster than 1/15 sec and
then attempt to arrive at the correct exposure timing gradually by means of repeated measuring, and you
will find this method easier for making necessary adjustment. The procedures are detailed below in the
order of work: (Diagram 19)

(1) Slightly ease the adjust plate screw (F18) (left-handed screw) and the screw (5), and rotate the top

adjust plate (F05) counter-clockwise until it reaches the lip of the screw (5).

(2) Slightly fasten the adjust plate screw (F18) to such an extent as to make (F05) rotate chafing against

the bottom adjust plate (F04) when the screw (5) is turned.

(3) Turn the screw (5) clockwise slightly to give a push to (F05).

(4) Measure exposure timing.

(5) Repeat the procedure of 3 and 4.

(6) When the timing reaches the allowable tolerance of 7-8 ms, tightly screw in (F18).

(7) Make final measurement.

(8) Seal tightly the screw (5) with red lacquer.

Diagram 19

e. TIME EXPOSURE

(Diagram 20)

When the shutter is released with the shutter speed dial set at "T," the 1st curtain completes its
travel, but projected part of the slow speed actuator lever (F06) hooks with the time stopper
(F03), thereby preventing the 2nd curtain from starting its travel.

When the shutter speed dial is turned to "B" or 1 1000, (F06) moves to the left by dint of the slow speed
cam (F01), separating from the stopper (F03), causing the 2nd curtain to start its travel, thereby making
time exposure complete.

During the time pace of 1.15 1 sec, (F06) actuates to the extreme right, when the speed dial is set at 1
sec. At this instant, the projected part of (F06) must actuate without contacting (F03). Bearing in mind
what has been described above, it is essential to adjust (F03) by easing the screw (3).

230-2 -18-

Diagram 19

f. EXPOSURE TIMING AT VARIOUS POINTS ON THE PICTURE FORMAT.

In a camera with focal plane shutter, the slit formed by its shutter curtains travels right in front of the
picture format, thereby providing exposure on the film successively. In view of this, it becomes
necessary to measure the time of exposure at various points on the picture formal.

In this camera, the adjustment of the above exposure timing should be made at 1/1000 sec. If the travel
time of the shutter curtains at 1/1000 sec. is consistent and the time of exposure at various points within
the picture format is likewise satisfactory, it follows that exposure timing at the slower speeds is good as
a matter of course.

An ordinary shutter gauge indicates the time of exposure at 3 positions, viz., at starting end, at center
and at finishing end of the picture format.

In view of the characteristics of this camera, it is desirable to adjust the exposure time so as to make it at
the former end of the format slightly faster than at center, and to make it at the latter end as fast as, or
slightly slower than, at center.

By carefully comparing the time of exposure at 3 different positions as indicated by a shutter speed
tester, discretion has to be exercised whether to adjust the curtain speed or the bulb lever. The time of
exposure at the former end has to be adjusted with the bulb lever, while that at the latter end with the
curtain travel speed. However, since adjustment of either of the above parts changes the time of
exposure at the 3 different positions, compare the exposure at the former and latter positions and repeat
the above adjustment procedures until satisfactory results arc obtained. An example in this respect is
shown in Diagram 21.

REFERENCE:
The time of exposure usually referred to means time of exposure at the center of the picture

Diagram 21

3. Assembly and Adjustment of Exposure Counter.

No adjustment is required when no parts are replaced. In the event some parts are replaced, assembly and
adjustment have to be performed in the following order:

Fix the top cover plate (A03), and then the rapid wind lever (C03), followed by the cover ring (C39). The
procedure up to this stage is mechanical.

Then the advance lug actuator (C07) has to be tightly secured with the actuator lug screw (C53). With (C03)

230-2 -19-

uncocked, (C07) should not idle in the direction of its rotation, checked by the cut-opening of (A03), and
(C53). (Diagram 22, 23)

Diagram 22

Diagram 23

If the gap of (C07) is considerable, it will invariably result in the counter dial travelling double scale space
even by single cocking. In this event, it is necessary to minimize the gap by hammering out the "A" part of
(C07). When (C53) can not be installed, file off !he "A" part. (Diagram 24)

Diagram 24

Then have only the transport gear (C28) ready, separated from (C12), install it and the counter retainer lug
(C08). Check the interlocking of the counter advance lug (C06) with the teeth of (C28), to see that the gap
between the tip of (C06) and the teeth should be of approx. 1/3 pitch in the direction of concentric circle,
with the rapid wind lever uncocked. (Diagram 25)

If the gap is more than 1/3 pitch, (C07) must be bent inward, whereas if the gap is less than 1/3 pitch, (C07)
must be bent outward. (Diagram 26)

Diagram 26

Diagram 26

At this point, cock (C03) and let it return slowly. If (C06) travels smoothly over the tips of the teeth of
(C28), the pressure of (C06) on (C28) may be considered proper. If (C06) comes to a stop at its tooth tip, it
is because the pressure is too strong, in which event it is necessary to bend and stretch out, however, with
utmost care not to deform or damage it.

NOTE: (C06) is annealed.

When (C03) is cocked, the transport gear (C28) must move by approx. 1 1/3 pitch by the counter
retainer lug (C08). (Diagram 27)

If moved less than 1 1/3 pitch, the "B" part (as illustrated in Diagram 24) must be hammered out,

230-2 -20-

but if moved more than 1 1/3 pitch, the "B" part must be filed off properly.

Diagram 27

Lastly, install the counter plate (C12) joined with (C28), namely, (0C12) and then match the
index mark of the covering ring (C39). The index mark should be matched before cocking.

(Diagram 28)

Diagram 28

4. Adjustment of X Contact.

X contact should be so adjusted as to close at the moment the 1st shutter curtain has run through the picture
format. As a matter of fact, however, once the shutter is released, it is difficult to let the 1st curtain travel
slowly. Consequently, slowly cock the shutter, and if the X contact leaves its contact when the 2nd curtain
edger (E04l begins to appear in the picture format, the X contact is properly adjusted.

(As the 1st curtain edger cannot be seen from the back of the body proper, and as the two edgers are
completely overlapped, the 2nd curtain edger should be used as a substitute to make this check.)

Adjustment is to be made as follows:
When the shutter is released, let X contact (E106) makes its contact, and then, when the curtain edger (E04)
appears on the picture format by cocking lever, bend X contact (E106) with tweezers so as to place it in a
switched-off condition. (Diagram No.29.) (Refer to Diagrams No.8 and No.16.)

Diagram 29

5. Adjustment of FP Contact.

Slowly push up with a finger tip the mirror seat (B10) until its front upper part reaches the height of the light
seal (B22), at which time the FP lever A (B23) should contact the FP lever B (B24I. If (B23) does not reach
(B24) at this point, bend (B24) for proper adjustment. (Diagram 30)

230-2 -21-

Diagram 30

6. Adjustment of Mechanical Hack.

The distance from the film guide rails to the helicoid seat (A15) affixed to the front cover (A05) is referred
to as " Mechanical Back," which should be adjusted to be 45.46 +/- 0.03 mm. Use the special gauges and
tools illustrated in Attachment 1, viz., 230N-A01-A, dial gauge, dial comparator, 230N A15 A and 230N­A01-A2. First, on the dial comparator, place the special gauge 230N-A01-A to be followed by 230N A01
A2, and adjust the dial gauge to zero.

Then, remove 230N-A01-A2 and place the body to be tested as per the illustration of Diagram No. 31. Place
230N-A15-A on A15 and check the distance between the film guide rails and the gauge 230N-A15-A, at
which the distance is to be adjusted to be 50.46± 0.03mm, using the front cover adjust washers (A39) with
different thicknesses. (Diagram 32)

The front cover adjust washers are available with the following thickness:

0.05 mm 0.1 mm 0.15 mm 0.2 mm

Diagram 31

Diagram 32

7. Adjustment of Viewfinder Focus.

Whenever optical parts have been replaced, or when assembly of all parts has been completed, focussing of
the viewfinder has to be checked and properly adjusted.
Usually a collimator is used for focus check. When a collimator is unavailable, however, use a distant thin
stick-like subject, for example, a lightning arrester located 200 meters or more away, as an infinity target.

While viewing through the viewfinder, turn the distance scale ring of the lens mounted. When bright
focussing at the infinity target is unattainable unless the lens is extended forward (as shown in Diagram 33),
turn the 3 focus adjust screws (B63) to the right, using the special tool 230K-B63-A, and push upward the
ground glass assembly. (Diagram 34)

On the other hand, when bright focussing at the infinity target is unattainable even if the lens distance scale
is set at infinity, turn (B63) to the left, lowering the ground glass assembly.

230-2 -22-

Diagram 33

Diagram 34

Adjustment should be made so that the image at the center as well as at the four corners on the ground glass
are equally in focus.

NOTE:
(1) Three pcs of screw (B63) have to be turned very slowly and alternatively.

(2) Upon completion of the adjustment, securely affix (B63) with binding agent.

Photo 9

230-2 -23-

CHAPTER III. FINAL TESTS

Upon completion of all assemblies, final tests should be performed. Needless to say, such strict,
thoroughgoing tests as are performed at the time of manufacture are not only practicable but
unnecessary.

However, final tests should be conducted according to the following procedures. Inasmuch as each of the
following paragraphs has much to do with what are described in Chapter II, refer as far as possible to applicable
paragraphs in Chapter II.

When checking finder focus, mount the standard lens. For the other parts, use the camera body only.

a. WIND-UP LEVER PERFORMANCE

When the rapid wind lever is cocked, it must function smoothly without stiff feeling, creaking noise or
sudden heavy feeling during the course of cocking; and when it is freed, it must return completely to its
original pre-winding position.
Remember that if the interior assembly and adjustment and/or lubrication are incomplete, they will
invariably result in ill functioning of the lever.

b. FILM COUNTER PERFORMANCE

With the counter dial set at "0," watch the turn of the dial while cocking the rapid wind lever, say, 10
times, to check whether the dial completely travels one scale after another, or whether it travels 2
notches, with single cocking. Also determine if the indicator progresses accurately even when the wind
lever is either slowly or rapidly cocked.

c. SHUTTER BUTTON PERFORMANCE

The shutter must function smoothly when the shutter button is depressed.
It must lift back to its original position the moment the depressing finger is off the button. After the
mirror has flipped up and the shutter closed, the shutter button still must, have some clearance to be
depressed slightly further.

After cocking the rapid wind lever, if the shutter button is released while lightly pushing the sprocket
gear to the opposite direction, the shutter button must function smoothly.

d. Check whether the shutter speed dial and the index ring are correctly aligned. This checking is necessary

because the speed dial couples with Asahi PENTAX clip-on meter. Also, check whether the speed dial
turns smoothly and clicks properly at each calibration.

e. When the rapid wind lever is cocked, the red "cocked" indicator must appear, occupying more than 2/3

space of the window; and when the shutter is released, over 2/3 space of the window must be blacked
out.

f. The rewind shaft, when pushed in, must correctly click, rotating smoothly.

g. The film type dial needs such friction as not to rotate too easily.

h. The "R" button, when pressed, must go in smoothly, and snap back to its original "out" position upon

cocking the rapid wind lever.
As the "R" button rotates whenever the rapid wind lever is cocked, check carefully whether it is not in
contact with the bottom cover.

i. Turn the spool brim to find out whether it has a proper friction.

In case of any doubt as to the extent of the friction, compare it with a new camera.

j. MIRROR PERFORMANCE

Determine if the flipping up of the mirror is smooth, thereby causing the curtain-actuating lever to
function satisfactorily. Move the mirror seat up with your fingertip to find out whether the mirror will
return smoothly to its original position, when the camera is not charged.

k. SHUTTER PERFORMANCE

230-2 -24-

Measure the time of exposure at 1/1000 sec, and check whether the exposure is consistent. Also find out
if there is any even-lessness if viewed from the rear.

Then measure the time of exposure at 1/15 sec.

The best way of checking the shutter bounce is to carefully watch from the back side of the picture
format, releasing the shutter at 1/60 sec. by holding and directing the camera toward a bright
background, say, white walls or the sky.

Check the exposure time at 1 sec. Also find out if there is any irregularity in the sound of the governor.

Also check the "B" and "T" setting performance.

l. SYNC. CONTACT

With the speed dial set at "B" or " T," release the shutter to check the FP and X flash contact
conductance, using a circuit tester usually available on the market.

m. MEASUREMENT OF MECHANICAL BACK

Place the camera body on the test board and measure the dimension of the mechanical back, with
particular attention not to scratch the film guide rails, etc.

n. VIEW FINDER FOCUS

With a collimator, or by using a thin distant subject 200 meters or more away as a target, check the
infinity focus of the camera. Find out if there are any dirts, dusts, piles or stains within the visional range
of the finder.

Clearly visible dirts are usually found on the ground glass.

230-2 -25-

CHAPTER IV.

CAUSES OF DEFECTS AND SERVICING

DEFECTS CAUSES SERVICING
Rapid wind lever stops
while cocking, or does
not return
automatically.

Shutter does not wind.

Damaged spring (C19) Replace (C19)

1. When the shutter is released, the spill
(E08) remains lowered.

How to determine:

Turn the sprocket hard in the rewinding
direction. If the spill position is proper,
the sprocket turns a little. If the spill
remains lowered, the sprocket does not
rotate at all.

a. Due either to the damaged wind-up
shaft spring (C57) or to its slipping from
the wind-up shaft (C31), the idling gear
does not back up properly.

b. The bezel of the top idling gear
(E17) is not properly positioned.

2. The bounce stopper lever (E99) does
not slip off the bounce stopper (E97).

3. The pin adjust plate stud (C76) which
is broken is sandwiched between the
teeth of the gear.

NOTE:

This part was once temporarily used.

4. The shutter curtain especially the
ribbon of the 1st curtain is torn and
coiled around the 1st curtain wind shafts
(E35) (E36).

a. Replace (C57). Also replace (C31) if it
is worn

b. Properly reposition the bezel of (E17).
(Refer to Chapter II, 1 c.)

2. Readjustment is necessary. (Refer to
Chapter II, I, E, 2)

REFERENCE:

As the "A" part of the old type bounce
stopper actuator lever (E98) as illustrated
in the foil-lowing sketch is liable to bend,
replace it with a new one.

3. Take out the broken piece and cut off
the erection point of (C76).

NOTE:

The wire-diameter of (E63) in cameras
equipped with this part is 0.12 mm and is
slightly narrower. Consequently, if move­ment of the pinion coupler lever (E10)
is dull, replace it with an improved one
with 0.15 mm in wire-diameter.

4. Replace the shutter curtain.

“A” part

230-2 -26-

DEFECTS CAUSES SERVICING

Film counter dial does
not move.

1. The gap between the extreme point of
the counter advance lug (C06) and the
tooth of the transport gear (C28) is wider
than the specified 1/3 pitch.

2. Damaged (C06).

1. Adjust the engaging position of (C28).
(Refer to Chapter II, 3.)

2. (0C07) is to be replaced.

Film counter dial
indicator jumps 2
notches with single
cocking:

This happens especially when the wind-up
lever is returned too rapidly.

1. The gap between the extreme point of
the counter advance lug (C06) and the
tooth of the transport gear (C28) is wider
than the specified 1/3 pitch.

2. The tension of the retainer lug spring
(C09) is weak.

1. Adjust the engaging position of (C28).
(Refer to Chapter 11, 3.)

2. Bend inward (C09) to strengthen its
tension.

Under-exposure at the
latter part of the picture
format at high shutter
speed.

The travel speed of the 1st curtain is slow.

1. Dust or oil collected on the surface of
the contact of the top idling gear (C17)
with the spill receptacle plate (E09),
and of (E17) with the idling gear collar
(E19).

2. Lack of lubrication on the curtain roller
bearing (E37).

3. Dust or lack of oil between the high­speed cam (E85), cam shaft nut (E76) and
cam shaft (E69).

1. Wash the parts involved.

2. Lubricate with L-4, or replace (E37)
with a new (E37) plastic roller bearing.

3. Disassemble the parts and apply L-l
slightly.

NOTE:

In case the curtain speed is still found slow
after servicing as described in the foregoing
1, 2 and 3, strengthen the tension of the
curtain spring.

Over-exposure at the
latter part of the picture
format at high shutter
speed.

The travel speed of the 2nd curtain is slow.

Lack of lubrication on the pinion shaft
(E32), coupler gear (E18) and curtain
roller (E34).

Apply L-l.

NOTE: In case the curtain speed is still
found slow after oiling with L-l, strength-en
the tension of the curtain spring.

Shutter curtains travel
without slit

1. When the shutter is wound, the 1st
curtain checker arm (E07) does not slip
behind the stud of the top selector gear
(E15).

2. The 1st curtain checker arm (E07) does

1. Adjust properly either the stopper
(C11) or the lever stopper (E10)
(Refer to Chapter II, 1 d.)

2. Replace (E61).
not function be-cause of the damaged 1st
curtain checker arm spring (E61).

230-2 -27-

DEFECTS CAUSES SERVICING

p

Shutter curtains do not
start.

Though the mirror seat (B10) flips up, the
1st curtain checker arm (E07) does not
slip off the stud of the top selector gear
(E15).

Check if the mirror seat flipping mechanism
is functioning smoothly. If found O.K., re-

lace the mirror seat spring (B44) as it might

have been weakened.

Slow speed shutter
exposure timing is too
fast.

Relative position of the slow speed lever
(F07) to the stud of the coupler gear (F18)
is not deep enough.

Make necessary adjustment. (Refer to
Chapter II, 2 d.)

Slow speed shutter
exposure timing is too
slow.

1. Relative position of the slow speed
lever (F07) to the stud of the coupler
gear (E18) is too deep.

2. The travel speed of the 2nd

1. Make necessary adjustment

(Refer to Chapter II. 2 d.)

2. Adjust the curtain travel speed.
curtain is too slow.

High speed exposure at
slow speed setting.

1. Slow speed governor is not returned.

2. Slow speed lever (F07) does not hook
the stud of (E18).

1. Disassemble and wash the governor, or

replace the complete governor.

2. Adjust the coupling of the stud of (E18)

with (E07). (Refer to Chapter II, 2 d.)

The mirror does not flip
up.

Mirror actuator lever, bottom (B19) does
not properly hook the pinion coupler lever
(E10).

Wash (E10) to make it function smoothly. f
the pinion coupler lever spring (E63) is
of the old type of 0.12 mm, replace it with
a new one of 0.15 mm.

The mirror does not
return.

Bottom actuator lever spring (B47) is
either weakened or damaged.

Replace (B47).

230-2 -28-

LIST OF SPECIAL SERVICE TOOLS

230N-A01-A Mechanical Back Gauge

Dial Gauge Mechanical Back Gauge

Dial Comparator Mechanical Back Gauge

230N-A15-A Mechanical Back Gauge

225K C36-A C36 Driver

226K-D15-A D15 Driver

225K-D09-A D09 Driver

225-C23-A C24 Holder

230N-A01-A2 Mechanical Back Gauge

229K-E64 65-A Shutter Curtain Wind-Up Driver

230K-E76 A E85 Driver

230-2 -29-

225K-C24-A C24 Driver

225K-E48-A E87 Adjust Driver

225K-F11-A F11 Driver

230K B63 A B63 Adjust Driver

230K-E69-A E85 Holder

Watch Oiler

Oil Cup

230-2 -30-

LIST OF LUBE OIL

1. “L” Lubrication.
The letter "L" stands for liquid lubrication oil.

In the event a watch-oiler is used, "one droplet of oil" means such quantity of oil as is found on the extreme
point of the watch-oiler when it is lined from the oil cup after soaking into oil at a 45o angle.

When the extreme point of the oiler is placed on the contact point of the parts to be oiled, oil will be
absorbed in the contact point because of the capillarity of oil. Watch carefully to assure that the oil from the
extreme point of the oiler is completely absorbed. When the oil on a brand-new oiler can not be easily
absorbed, grind the extreme point of the new oiler cither with a whetstone or a grinder to flatten its tip,
which will facilitate absorption.

"L" lubricant should never be exposed to the sunlight nor should it be stored under high temperature. Stale
oil kept in the oil cup for a long time should never be used. Wash the oil cup from time to time.

2. “G” Lubrication.

The letter "G" stands for grease.
"G" is not so easily absorbed as " L." Consequently, before putting the parts together, grease them first and
then assemble. Before assembling, put "G" mainly on shafts, which will make the job easier and ensure good
lubrication.

However, when greasing such parts as are not in a complete shaft bearing shape, for instance, slide surface,
grease them after assembly, and the job will be easier and better results will be assured.

Generally speaking, "G" has strong viscosity; and therefore, if by any chance, it is applied on parts where
greasing is unnecessary, it will result in mal-functioning of the parts so smeared. Strict care must
accordingly be exercised not to over-grease any parts.

230-2 -31-

L-l Where To Apply.

(Number indicates droplets of watch oiler)

Quantity of Oil

Between (E31) (1st curtain pinion shaft) and shaft bearing of (C01) (top
mec. plate).
Between ( E31) (1st curtain pinion shaft) and shaft bearing of (C02)
(bottom mec. plate)
Between (E32) (2nd curtain pinion shaft) and shaft bearing of (C 01) (top
mec. plate).
Between (E32) (2nd curtain pinion shaft) and shaft bearing of (C02)
(bottom mec. plate).
Between (E18) (coupler gear) hole and (E53) (Coupler gear retainer
screw).
Between (E26) (selector gear shaft) and (E14) (bottom selector gear) hole. 1
Between (E26) (selector gear shaft) and (E15) (top selector gear) hole. 1
Between (E34) (curtain roller, small) and shaft bearing of (E01) (top shaft
plate).
Between (E34) (curtain roller, small) and bearing of (E89) (2nd curtain
shaft plate).
Between (E85) (high speed cam) hole, (E69) (cam shaft) and (E76) (cam
shaft nut).
Between (E104) (sync. gear) hole and (E105) (sync. gear column). 2
Between (F12) (slow speed rod) and (F13) (slow speed rod receptacle)
hole.

L-2

Between (D05) (rewind shaft) and (D04) (shaft
bearing).

Apply oil on a piece of glass or on a clean piece
of tiny iron stick and give one vertical stroke with the
side of it on (D05) and then put it into (D04).

L 3

(0G00) Spots marked " A," "C," and "D" in the following sketch (both top
and bottom).

1 or less

1

1

1

1

2

1

1

1

1

NOTE: When the governor has been disassembled, the spot marked "B" should not be

oiled with watch oiler. Apply oil to the pivot only, and then, wipe it away lightly.

L-4

Between (E31) (1st curtain pinion shaft) and (E37) (curtain roller
bearing), top and bottom.

2

NOTE: If (E37) is plastic, no oiling is required.

230-2 -32-

G 1

Between (B35) (mirror actuator lever shaft), (B18) (mirror actuator lever,
top) and (B19) (mirror actuator lever, bottom) hole
Contact between (B42) (mirror seat lug stud) and (B83) (mirror checker
spring).

Between (C24) (bottom main gear) and shaft bearing of (C02) (bottom
mec. plate).

Between groove of (C24) (bottom main gear) and (C58) (take-up spool
spring), (W17) and (C14) (bottom take-up spool brim).

Between bottom of (C31) (wind-up shaft) brim, (W17) (bakelite), and
(C13) (top take-up spool brim).

Between (C34) (wind-up lever shaft) and hole and inside bottom of (C20)
(top 1st gear).

Between (C34) (wind-up lever shaft) and hole of (C35) (wind-up lever
seat).

Between (E20) (idling gear shafts and hole of (E19) (idling gear collar).

G-2

Contact between (B16) (mirror checker lever) and (B51) (1st dia. lever
pin).

Contact between (B27) (actuator lever, top) and (E30) (actuator lever rod).

Contact between (B28) (bottom actuator lever) and (B29) (2nd dia. lever
checker plate).

Contact between (C15) (coupler lever) and (B19) (mirror actuator lever).

Between center hole of (C15) (coupler lever) and (C48) (coupler lever
shaft).

Contact between long hole of (C15) (coupler lever) and (C51) (coupler
lever pin).

Contact between the tip of (E06B) (bottom bulb lever) and (E44)
(selector gear retainer ring).

Between projected part of (E68) (speed selector disc) and sliding part of
(E69) (cam shaft) groove.

Between triangular groove of (E69) (cam shaft) and projected part of
(E25) (selector collar).

G 3

Between hole of (C25) (bottom 1st gear) and (C46) (bottom 1st gear
shaft).

Between hole of (C26) (bottom 2nd gear) and (C45) (bottom 2nd gear
shaft).

Contact between (C27) (bottom 3rd gear) and (C63) (sprocket seat
spring).

Thin Japanese writing brush.

Thin Japanese writing brush.

"

"

"

"

"

(small quantity)

"

"

"

"

"

"

"

(small quantity)

"

(small quantity)

"

(small quantity)

"

(small quantity)

"

(small quantity)

"

(small quantity)

230-2 -33-

Between narrow part of (C3D) (sprocket shaft) and hole of (A01) (body
proper).

Between (C30) (sprocket shaft), hole of (C02) (bottom mec. plate) and
(W22).

Between (C31) (wind up shaft) and (C57) (wind up shaft spring).

Contact between (C32) (wind up shaft bearing; and (C23) (top main gear).

Between (C41) (top 2nd gear column) and hole of (C21) (top 2nd gear).

"

(small quantity)

"

(small quantity)

Thin Japanese writing brush.

"

"

230-2 -34-

LIST OF BONDS

NOTE:

1. Immediately after use of binding agent, its container has to be capped tightly. Preferably it
should be divided and kept in as smaller containers as possible. When not in use, the container
has to be capped tightly.

2. Do not use stale binding agent that has been kept for a long time. The binding strength
deteriorates if thinned from time to time with solvents.

Pliobond

Binding Places

A30 (body covering, left)

A31 (body covering, right)

A41 (light seal)

A42 (light seal) " "
A33 (back cover covering)

A40 (indicator window)

A44 (prism scat)

A32 (key housing covering)

B63 (focus adjust screw)

B86 (mirror shock absorber)

Set screw, flat, 1.7x4 (prism adjustment) B01 (prism seat) "

A01 (body proper) Brush

" "

" Thin Japanese writing brush

A02 (back cover) Brush

A03 (top cover plate) Thin Japanese writing brush

" Brush

A13 (key housing) "

B02 (mirror housing) Thin Japanese writing brush

" "

Tool

B61 (light seal)

Screw Lock No. 2

A43 (strap hook screw)

B13 (mirror seat rest screw)

C73 (rapid wind lever retainer screw) C03 (rapid wind lever) "

E105 (sync. gear column.)

Shellac

E03 (1st curtain edger)

E04 (2nd curtain edger)

W5 1.8x5

B02 (mirror housing) "

A21 (strap hook) Thin Japanese writing brush

B02 (mirror housing) "

A01 (body proper) "

E64 (1st curtain) Spatula

E65 (2nd curtain) "

A01 (body proper)
A05 (front cover plate)

Brush

230-2 -35-

Penguin No. 332 N

Binding Places

Tool

B26 (sync. seat insulator)

B25 (sync. seat) Spatula

E64 (1st curtain shutter) E35 (1st curtain wind shaft, top) E64 "

E64 " E36 (1st curtain wind shaft, bottom) "

E65 (2nd curtain shutter)

E 39 (2nd curtain pipe) Brush

Penguin No. 251

E115 (insulator tube)

E111 (X contact pin) Thin Japanese writing brush

Red Lacquer

E87 (bulb lever adjust nut)

E06R (bottom bulb lever), set screw,
flat 1.4x2.5

Thin stick

F19 (slow speed lever retainer screw) F07 (slow speed lever) "

F04 (bottom adjust plate) Small screw, flat, medium, 1.7x3

"

Set screw, flat 1.7x4

A01 Back of (C11) of body proper "

B59 (2nd lever adjust screw)

B27 (actuator lever, top) "

Solvents and Additives of Bonds

Name of Bonds Solvents and Additives

Pliobond No. 30 Methyl-ethyl ketone
Penguin No. 332 N Toluol
Penguin No. 251 Toluol
Shellac 40% shellac varnish
Screw lock No. 2 Methyl ethyl ketone
Red Lacquer Thinner

230-2 -36-

EXPLODED ILLUSTRAT IONS

Fig.1

230-2 -37-

230-2 -38-

Fig. 2

230-2 -39-

Fig. 3

230-2 -40-

Fig.4

230-2 -41-

Fig. 5

230-2 -42-

Fig. 6

LIST OF SERVICE PARTS

Product No. 2 30 -2

ASAHI PENTAX S3

Note: The parts with numbers starting with ' 0' are assembled parts, and the *marked parts
are included in the ' 0 '-starting assembled parts.

PART NO. DESCRIPTION QUANTITY

0A01 Body proper assembly (A01, E118)

0A02 Back cover assembly (A02, A09, A10, A13, AI4, A25, A27, A32.

A33, A34, A36, A37)

0A03 Top cover assembly (A03, A17, A40)

A04 Bottom cover

0A05

A06 Sprocket cover

A07 Light seal

A08 Cassette receptacle

A09 * Cassette holder

A10 * Hinge

0A11 Pressure plate assembly (All, A12, A26)

A12 * Pressure plate spring

A13 * Key housing

A14 * Back cover key

A15 * Helicoid seat

A16 * Helicoid seat retainer screw

A17 * Shutter button seat

A18 Shutter button

A19 Shutter button shaft

A20 Tripod socket

A21 Strap hook

A22 * Plug seat

A23 * Outer pole

A24 * Inner pole

A25 * Pressure plate retainer stud A

A26 * Pressure plate rivet

A27 * Key housing column

A28 Key housing retainer plate

A29 * Helicoid seat stopper

A30 Body covering, left

A31 Body covering, right

A32 * Key housing covering

Front cover assembly (A05, A15, A16, A22, A23, A24, A29, A35,
B51, B52, B53, B56, B57, B60, small screw FM 1.4x2)

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

2

2

2

1

1

1

1

1

230-2 -43-

A33 * Back cover covering

A34 * Cassette holder rivet

A35 * Earth

A36 * Pressure plate retainer stud B

A37 * Hinge rivet

A39 Front cover adjust washer

A40 * Indicator window

A41 Light seal

A42 Light seal

A43 Strap hook screw

B01 Prism seat

0B02 Mirror housing assembly (B02, B21, B76, R304)

B03 Ground glass frame

B05 Ground glass mask

B06 Prism retainer plate

B07 Prism cover

0B08 Magnifier retainer assembly (B08, B78)

0B09 Prism side protector assembly (B09, B33)

0B10 Mirror seat assembly (B10, B11, B12, B15, B42, B48, B49, B50) 1

B11 * Mirror Hinge 1

B12* Mirror retainer plate 1

1

2

1

2

3

4

1

2

2

2

1

1

1

1

1

1

1

2

B13 Mirror seat rest screw 1

B14 Mirror seat rest 1

B15 * Mirror seat lug 1

B16 Mirror check lever 1

B17 Mirror check lever screw 1

0B18 Mirror actuator lever, top assembly (B18, B39, B51) 1

0B19 Mirror actuator lever, top assembly (B19, B38, B58, B70) 1

0B20 Curtain actuator lever assembly (B20, B40) 1

B21 * Light seal 1

B22 Light seal 1

B23 * FP lever A 1

B24 * FP lever B 1

0B25 Sync seat assembly (B25, B23, B24, B26, B64, B65, B66, B73,

B74, B77)

B26 * Sync seat insulator 1

0B27 Actuator lever assembly (B27, B28, B59, B67, B68, B84) 1

B28 * Bottom actuator lever 1

B29 * 2nd dia lever checker plate 1

0B30 X lever assembly (B30, B32, B73, B75, B77, B80) 1

B31 X lever insulator 1

1

230-2 -44-

B32 * X lever retainer plate 1

B33 * Protector plate pin 2

B35 Mirror actuator lever shaft 1

B36 Mirror actuator lever retainer screw 1

B37 * 2nd dia lever checker plate rivet 2

B38 * Mirror actuator lever spring hanger A 1

B39 * Mirror actuator lever spring hanger B 1

B10 * Curtain actuator lever stay 1

B41 Actuator lever spring hanger 1

B42 * Mirror seat lug stud 1

B43 Curtain actuator lever retainer screw 1

B44 Mirror seat spring 1

B45 Prism retainer spring 2

B46 Mirror check lever spring 1

847 Bottom actuator fever spring 1

B48 * Mirror scat lug rivet 2

B49 * Mirror retainer plate rivet 2

B50 * Mirror hinge shaft 1

B51 * 1st dia lever pin 2

B52 * Dia lever support 1

B53 * 1st dia lever 1

0B54 2nd dia lever assembly (B54, B29, B37, B69) 1

B55 2nd dia lever retainer screw 1

B56 * 1st dia lever shaft 1

B57 * 1st dia lever spring 1

B58 * Mirror actuator lever, bottom, stud 1

B59 * 2nd dia lever adjust screw 1

B60 * Supporter column 2

B61 Light seal 1

B62 X lever retainer plate screw 2

B63 Focus adjust screw 3

B64 * Contact A 2

B65 * Contact B 2

B66 * Sync lever rivet 6

B67 * Actuator lever collar 1

B68 * Actuator lever shaft 1

B69 * Dia lever spring hanger A 1

B70 * Dia lever spring hanger B 1

B71 Mirror housing retainer screw 2

B72 Dia lever spring 1

B73 * Cord B 2

230-2 -45-

B74 • Tube A 1

B75 * Tube B 1

B76 * Actuator lever column 1

B77 * Lug plate 2

B78 * Magnifier cushion 1

B79 Ground glass holder 2

B80 * X lever rivet 1

B81 Mirror hinge screw 3

B83 Mirror checker spring 1

B84 * Actuator lever coupler spring 1

B85 Actuator lever spring 1

B86 Mirror shock absorber 1

0C01 Top mec plate assembly (C01, C41, C43, C79, E20, E22, E26, E27,

E28, E81, E120)

0C02 Bottom mec plate assembly (C02, C45, C46, C47I 1

0C03 Rapid wind lever assembly (C03, C09, E120) 1

C04 Non-return arm 1

C05 * Lever seat lug 1

C06 * Counter advance lug 1

0C07 Advance lug actuator assembly (C07, C06, C66) 1

C08 Counter retainer lug 1

C09 * Retainer lug spring 1

0C10 Lever stopper assembly (C10, C44) 1

C11 Stopper 1

0C12 Counter assembly (C12, C28, C50) 1

C13 Top take-up spool brim 1

C14 Bottom take-up spool brim 1

C15 Coupler lever 1

0C16 Coupler lever seat assembly (C16, C48) 1

0C17 Pin adjust plate assembly (C17, C51. C76, set screw tapered 1.7x2) 1

C18 Half moon washer 1

C19 * Spring 1

1

C20 Top 1st gear 1

0C21 Top 2nd gear assembly (C21, C22) 1

C22 • Top 3rd gear 1

C23 * Top main gear 1

C24 Bottom main gear 1

C25 Bottom 1st gear 1

C26 Bottom 2nd gear 1

0C27 Bottom 3rd gear assembly (C27, C30) 1

C28 * Transport gear 1

230-2 -46-

C29 Sprocket 1

C30 * Sprocket shaft 1

0C31 Wind-up shaft assembly (C31, C23, C32, C57,C75) 1

C32 * Wind-up shaft bearing 1

C33 Take-up spool shaft 1

C34 Wind-up lever shaft 1

0C35 Wind-up lever seat assembly (C35, C05, C19, 1

C36 Counter screw 1

C37 Arrow ring 1

C38 Lever seat collar 1

C39 Covering ring 1

C40 R button 1

C41 * Top 1st gear column 1

C42 Stopper column 1

C43 * Non-return arm seat 1

C44 * Spring hanger column 1

C45 * Bottom 2nd gear shaft 1

C46 * Bottom 1st gear shaft 1

C47 * Coupler lever collar 2

C48 * Coupler lever shaft 1

C49 * Lever seat rivet 1

C50 * Counter stud 2

C51 * Coupler lever pin 1

C52 R lever retainer screw 1

C53 Actuator lug screw 2

C54 Arrow ring retainer screw 1

C55 Bottom 2nd gear screw 1

C56 Sprocket screw 1

C57 * Wind-up shaft spring 1

C58 Take-up spool spring 1

C59 Lever seat lug spring 1

C60 Counter spring 1

C61 Non-return arm spring 1

C62 R lever spring 1

C63 Sprocket seat spring 1

C64 Spring washer 2

C66 * Advance lug rivet 2

C68 Stopper washer A 2

C69 Stopper washer B 1

C70 R lever 1

C71 Slow speed spring hanger 1

230-2 -47-

C72 Bottom mec plate retainer screw 4

C73 Rapid wind lever retainer screw 2

C74 * Spring Retainer screw 1

C75 * Top main gear retainer screw 1

C76 * Pin adjust plate stud 1

C77 Cover ring retainer screw 2

C78 Bottom 2nd gear spring 1

C79 • Gear column pin 1

C80 Coupler lever retainer screw 1

C81 * Lug spring retainer screw 1

C87 Light seal 1

C92 Stopper nut 1

D01 * Hoof spring 1

D02 Film type dial washer 1

D03 Shaft bearing washer 1

D04 Shaft bearing 1

D05 Rewind shaft 1

0D06 Rewind knob assembly (D06, D07, D10, D11, D12, D13, D15) 1

D07 * Rewind cover ring 1

D08 Film type dial 1

D09 Flat nut 1

D10 * Crank 1

D11 * Nipple 1

D12 • Crank shaft 1

D13 * Crank pin 1

D14 Shaft spring 1

D15 * Retainer ring 1

D16 Dial seat spring 1

D17 Shaft spring retainer screw 1

E01 Top shaft plate 1

E02 1st curtain shaft, plate 1

E03 * 1st curtain edger 1

E04 * 2nd curtain edger 1

E05 Release plate 1

0E06 Bulb lever assembly (E06A, E06B, E71, E72, B78, E87, set screw

flat 1.4 x 2.5)

E06A * Top bulb lever 1

E06B * Bottom bulb lever 1

E07 1st curtain checker arm 1

230-2 -48-

1

E08 Spill 1

E09 Spill receptacle plate 1

0E10 Pinion coupler lever assembly (E10, E75) 1

0E11 2nd curtain pinion assembly (Ell, E32, E49) 1

E12 * 1st curtain pinion 1

E13 Coupler pinion 1

0E14 Bottom selector gear assembly (E14, E44, E73) 1

0E15 Top selector gear assembly (E15, E43, E70, E77, E84) 1

0E16 Bottom idling gear assembly (E16, E19I 1

E17 Top idling gear 1

0E18 Coupler gear assembly (E18, E45, E46) 1

El9 * Idling gear collar 1

E20 * Idling gear shaft 1

E21 Spill rest 1

E22 * Spill rest collar 1

E23 Speed dial 1

E24 Index ring 1

E25 Selector collar 1

E26 * Selector gear shaft 1

E27 * Bull) lever shaft 1

E28 * 1st curtain checker arm seat 1

E29 Shutter rod 1

E30 Actuator rod 1

E31 * 1st curtain pinion shaft 1

E32 * 2nd curtain pinion shaft 1

E33 * 1st curtain shaft 1

E34 Curtain roller, small 1

E35 * 1st curtain wind shaft, top 1

E36 * 1st curtain wind shaft, bottom 1

E37 * Curtain roller bearing 2

0E38 Curtain roller, large, assembly (E38, E37) I

E39 * 2nd curtain pipe 1

E40 • 2nd curtain wind shaft bearing, bottom 1

E41 • Wind shaft bearing 2

E42 Curtain spring adjust lug 2

E43 * Top selector gear stud 1

E44 * Selector gear retainer ring 1

E45 * Slow speed lever actuator stud 1

E46 * Coupler gear stud 1

E47 * Edger rivet 4

E48 Bulb lever nut 1

230-2 -49-

E49 * Pinion retainer pin 2

E50 Idling gear retainer screw 1

E51 lst curtain checker arm retainer screw 2

E52 Pinion coupler lever retainer screw 1

E53 Coupler gear retainer screw 1

E54 Adjust lug screw 2

E55 * Pinion shaft retainer screw (Only 2 supplied with 0E64) 3

E56 Cam shaft spring 1

E57 Shutter rod spring 1

E58 Spill spring 1

E59 * 2nd curtain spring 1

E60 Adjust lug spring A 1

E61 1st curtain checker arm spring 1

E62 Bulb lever spring 1

E63 Pinion coupler lever spring 1

0E64 1st curtain assembly (E64, E03, E12, E31, E33, E35, E36, E47,

E49, E55, E90, E91, E95, E96)

0E65 2nd curtain assembly (E65, E04, E39, E40, E41, E47, E59, E67,

E74, E94)

E66 Coupler lever spring hanger 1

E67 * Curtain pipe 1

E68 Speed selector disc 1

1

1

E69 * Cam shaft 1

E70 * Speed selector pin 1

E71 * Bulb lever collar, top 1

E72 * Bulb lever collar, bottom 1

E73 Retainer ring rivet 1

E74 * 2nd curtain wind shaft metal, top 1

E75 * Pinion coupler lever pin 1

E76 * Cam shaft nut 1

E77 * Selector gear stopper 1

E78 * Bulb coupler spring 1

E79 Cam shaft spring receptacle 1

E80 ' Cocked' indicator 1

E81 * ' Cocked ' indicator shaft 1

E82 ' Cocked ' indicator spring 1

E83 Click spring 1

E84 * Selector gear stopper rivet 1

0E85 High speed cam assembly (E85, E69, E76) 1

E86 1st curtain checker arm stopper 1

E87 * Bulb lever adjust nut 1

E88 Coupler pinion screw 1

230-2 -50-

E89 2nd curtain shaft plate 1

E90 * 1st curtain wind shaft bearing, lop 1

E91 * 1st curtain wind shaft bearing, bottom 1

E92 Curtain spring adjust gear A 1

E93 Curtain spring adjust gear B 1

E94 * 2nd curtain shaft 1

E95 * 1st curtain pipe 1

E96 * 1st curtain spring 1

E97 * Bounce stopper 1

E98 Bounce stopper actuator lever 1

E99 Bounce stopper lever 1

El00 Bounce stopper actuator lever screw 2

E101 * Bounce stopper rivet 1

E102 Bounce stopper spring 1

E103 Bounce stopper lever screw 1

0E104 Sync gear assembly (E104, E97, E101, E111, E115) 1

E105 Sync gear column 1

E106 * X contact A 1

0E107 X contact B assembly (E107, B64, B65, B66, E106, E108,

E109, E112)

E108 * X contact seat 1

1

E109 * X insulator 1

E110 X contact support 1

E111 * X contact pin 1

E112 * X contact column 2

E113 X contact retainer screw 1

El14 Adjust lug spring B 1

E115 * Insulator tube 1

EI16 E117 Bounce stopper lever retainer 1

E118 * Shutter rod receptacle 1

E119 Release plate nut 1

E120 * Gear shaft rivet 5

F01 Slow speed cam 1

0F02 Cam coupler plate assembly (F02, F10) 1

F03 Time stopper 1

0F04 Bottom adjust plate assembly (F04, F12I 1

0F05 Top adjust plate assembly (F05, F06, F07, F08, F09, F14, FI5, F17,

F19, W2)

F06 * Slow speed actuator lever 1

1

F07 * Slow speed lever 1

F08 * Slow speed lever collar 1

230-2 -51-

F09 * Lever support nut (Only 1 supplied with 0F05) 2

F10 * Cam coupler plate stud 1

F11 Cam coupler plate nut 1

F12 * Slow speed rod 1

F13 Slow speed rod receptacle 1

F14 * Lever support 1

F15 * Slow speed lever seat 1

F16 Slow speed spring 1

F17 * Slow speed actuator lever stud 1

F18 Adjust plate screw 1

F19 * Slow speed lever retainer screw 1

F20 Slow speed cam retainer screw 2

0G00 Slow speed governor assembly (G01 -G19) 1

AF12 Mirror 1

AF17 Pentaprism 1

AF18 Ground glass 1

0AF20 Magnifier front element assembly (AF20, AF21) 1

AF21 * Magnifier rear element 1

AF22 Fresnel lens 1

230-2 -52-

LIST OF STANDARD PARTS

Product No. 2 30 -2

ASAHI PENTAX S3

Standard Small Screws

Index No. Name Surface

Treatment

1 Small screw, flat, medium 1.2x1.6 Nickel G02, G13 2

Black E112, B77 2

G04, G14 2

2 " 1.4x1.2 Black D01, D06 2

3 " 1.4x1.4 Black E03, C02 2

4 1.4x2 Black A01, G01 2

B52, B60 2

B02, B22 2

5 1.4x3 Black F04, F05 1

6 1.7x1.4 Black A01 2

7 1.7x1.8 Black B02, B47 1

A01, A07 2

8 1.7x2 Black A01, A06 2

9 1.7x2.5 Black A01, E89 1

A01, E108 1

A01, E83 2

A01, D04 2

A01, C02 1

B02, B25 2

B01, B08 2

10 1.7x2.8 Black A01, A66 2

11 1.7x3 Black A01, B02 2

A01, A08 1

C16, C47 2

12 1.7x3.5 Black C11, C42 1

13 1.7x5 Black B01, B02 3

14 2x3 Black C17, C24 1

15 2x4.5 Black A01, C10 2

16 Small screw, saucer, medium 1.7x2.2 Chrome plated A04, A20 2

A01, A28 2

17 1.7x3.5 Black A01, C32 3

A01, A20 2

A01, A10 3

C32, C34 3

18 2x3.5 Chrome plated A01, A03 1

A01, A04 2

19 Small screw, round, saucer, medium 1.7x3 Chrome plated A01, A03 2

A01, A05 4

20 1.4x2.5 Nickel plated E06A, E06B 1

21 Set screw, flat 1.7x4 B01, B09, AF17 2

Place of Use Quantity

230-2 -53-

22 Set screw, flat 1.7x4.5 A01, C11 1

23 Set screw, tapered 1.7x2 C17, C24 2

E24, E26 3

E23. E68 3

Lock Washer

Code Material Thickness (mm) Place of Use Quantity

LW10 0.2 B76 1

LW13 0.3 F12 1

E33 1

E94 1

E105 1

LW17 0.4 E50 1

Washers

(NOTE: Asterisk " denotes quantity which is subject to change.)

W2 Steel 0.03, 0.05, 0.1 E09, F14 1*

Brass 0.4 E10 1

W3 Steel 0.1 E18 1

E99 1

Phosphorus bronze 0.2 E98 2

W5 Steel 0.05, 0.1, 0.2 B02, B54, B55 1

A01, A05 4*

W8 Phos. bronze 0.1 B02, B35 1

W9 Brass 0.4 C70 1

W10 Steel 0.05 C26 1

Wll Phos. bronze 0.1, 0.15, 0.2, 0.5 A27 2*

F12 1*

E26 1*

W12 0.05, 0.07, 0.1 B18, B35 1*

B19, B35 1*

W13 Steel 0.3 A27 2

W14 Phos. bronze 0.1 E105 1

W15 Steel 0.05, 0.1 C34 1

W17 Bakelite 0.4 C13, C31 1

Steel 0.2 C14, C24 3*

W18 Steel 0.1 D02, D09 1*

W21 Steel 0.05, 0.1 C48 1*

W22 Phos. bronze 0.7, 0.8 C30 1

W26 0.1. 0.15 C12, C36 1*

230-2 -54-