Star Tech Journal

13
STAR*TECH JOURNAL/DECEMBER 1982
TAITO
"GRAND CHAMPION" STEERING WHEEL MOD
Game: Grand Champion
Subject: Steering wheel wobbles after
some use.
Solution: Add screws to the hub (A).
Parts
QTY.
3
3
l
Needed:
DESCRIPTION PART NUMBER
M4 X 10 Screw
885
StarLockWasher
8845
Space Washer
8822
Procedure:
Please refer to Figure l while reading the
following:
In order to determine if this procedure is
necessary, remove the control panel and test
to see if hub (A) item 11 is able to move in
any direction. If it does move, the following
procedure needs to be used in order to avoid
unnecessary wear of the shaft.
In order to install the missing screws in
hub (A) you must first disconnect the photo
sensor PCB plug and move it out of the way.
Loosen and take off the four flange nuts
(item 20) holding down the sensor board
bracket. Upon removing the sensor board
bracket, the pulse cam and gear (items 13
and 14) should come loose along with it.
Loosen and remove the self locking nut
(item 21) holding down the steering shaft.
After removing the locking nut, remove the
spring washer (item 22), the gear (item 23),
and the space washer (item 24). The steering
wheel and shaft is loose now and can be
pulled out of the control panel.
Next, remove the four outer hub base
nuts with their adjoining washers. Also,
remove the earth ground strap closest to the
shifter. Loosen and remove the four flange
nuts (item 10) on the hub base. Now the hub
base (item 9) and hub (A) (item 11)
can be removed from the control panel.
part of the shaft. On the back side of the
shaft there should be one spacer washer
(item 24) affixed to the back of the shaft.
Sometimes two space washers must be used.
Each steering wheel will vary due to the
wear. If two washers are used, the steering
wheel may seem tight at first, but loosening
the self locking nut ( item 21) an eighth of a
tum at a time will loosen the steering wheel.
When assembling the pulse cam and gear
in the hold provided in the hub (A), proper
care should also be taken in that the pulse
cam is in the middle of the photo sensor, not
touching either of the edges. This can be
done by adjusting the sensor board bracket
( item l 7) and tightening the flange nut ( item
20), making sure the gear is perpendicular to
hub (A) (item 11).
*A note of care is advised in aqjoining the
hub base to the control panel. The hole for
the pulse cam and gear should be put
closest to the gear shifter, as the plug for
the photo sensor will not reach otherwise.
Adjoin missing pan head screws (item 7)
and star washing (item 6) to the hub (A).•
When reassembling the steering wheel
shaft to the control panel there must be two
spacer washers (item 28) affixed to the front
FIGURE 1 - Steering Assembly
ITEM
1
2
3
4
5
6
7
8
9
10
11
12
TAITO PART NO.
8814
8818
8816
882
882
390027
885
305026
886
887
888
8810
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
8826
8825
8830
305026
8829
8828
8827
352053
8824
8821
8823
8822
883
8812
8813
8822
8820
8821
8819
8817
8815
884
DESCRIPTION
Steering Cap
Steering Wheel
Retaining Plate Assembly
Pan HD Screw M6X25
Hub Base (B)
Star Washer
Pan HD Screw M4X10
Pan HD Screw M4X8
Hub Base (A)
Flange Nut M6
Hub (A)
Flange Bushing 80F-0406
(Oiless)
Gear
Pulse Cam
Photo Sensor PCB Assembly
Pan HD Screw M3X6
Sensor Board Bracket
Self Lock Nut M4
Spring Washer 4M
Flange Nut M4
Self Lock Nut M6
Spring Washer 6M
Gear
Spacer
Hub(B)
Steering Cover
C-Sink HD Screw 3.50X10
Spacer
Cap Bolt M6X30
Spring Washer 6M
Steering Shaft
C·Sink HD SelfTap M4X10-2
Decoration Plate
Flange Bushing 80F-1512
(Oiless)
30-
6
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