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Space Sweeper
(INCLUDES 28G & 28B)
Section II
Parts and Service Manual
(70100B)
CLARKE TECHNOLOGY Model SPS-28 Space Sweeper Operator's ManualPage 11
Page 2
SERVICE AND MAINTENANCE
WARNING: Maintenance and repairs must be done
by authorized personnel only. Keep
Adjustments according to specifications.
WARNING: To prevent injury always stop the en-
gine or motor before doing any maintenance or repairs to this machine. Separate the connectors between the machine and batteries. Disconnect the
wire from the spark plug.
How To Check the Engine
1.Check oil level regularly. Change oil after using first two
tanks of gasoline. change oil regularly after each twentyfive (25) operating hours, or more often in extremely dirty
conditions.
2.Keep the engine clean and remove dirt and oil from coiling
fins, screen and flywheel for best engine performance and
to prevent damage from overheating.
Do not allow dirt to enter the engine when checking oil or
adding fuel.
Wire brush carbon deposits from spark plug electrodes
and regap at .030 in.
How to Clean the Engine Air Filter
Clean and re-oil every ten (10) hours - more often under
extremely dusty conditions.
1.Remove filter element. Separate pre-filter from pleated
filter.
2.Clean pre-filter only in detergent and warm water.
3.Squeeze dry.
4.Apply liberal amount of clean engine oil and distribute
evenly. Squeeze out excess oil.
5.Install element.
Lubrication
The Model SPS-28 has one grease fitting on the main drive
wheel. Apply two strokes of lubricant (PN 883853) from a
grease gun each month. (See Fig. 8)
WARNING: To prevent injury and damage, remove
the batteries or gasoline before tipping
the machine.
To get access to the grease fitting, remove the batteries and
hoppers and tip the machine on its side.
Fig. 8
Page 12CLARKE TECHNOLOGY Model SPS-28 Space Sweeper Operator's Manual
Page 3
Drive Belts
WARNING: To prevent injury always stop the
engine or motor before doing any
maintenance or repairs to this machine.
The drive belts are automatically tensioned by a springloaded idler wheel. (See Fig. 9)
1.Remove the idler pulley tension spring.
2.Slip the belt off the pulley.
3.Install a new belt.
4.Assemble idler tension spring.
5.Align pulleys and belts if necessary.
Main Broom Adjustment
The main broom should be periodically readjusted as
needed to compensate for wear. Use the broom-adjusting
lever to accomplish this. rotate counterclockwise to lower
and clockwise to raise. (See Fig. 2, page 6)
Side Broom Belt Adjustment
To increase tension on the side broom belt, loosen the two
(2) socket set screws. Push the split clamp forward on the
tubular frame until belt is sufficiently tight to drive broom
without slipping. Tighten clamp screws.
Fig. 9
Friction Drive Wheel
The friction drive wheel should be adjusted so it touches the
mating drive wheel. The machine should NOT creep or
move when the operator handle is in neutral "UP" position.
(See Fig. 10)
ENGINE SPEED ADJUSTMENT(Model 28G)
The engine speed (rpm) is governor-controlled and preset
at the factory at 2150 rpm (no load). Should it be necessary
to check or readjust this setting, use a good strobe
tachometer and adjust the governor rod threaded end to
maintain 2150 rpm (no load). Be certain all brooms are
raised for this adjustment.
Installation of new Main Brush
The main brush is made up of five (5) bristle strips, installed
and retained on the core by three (3) screws and washers
for each strip. Do not change (1) new bristle strip with (4)
worn strips.
Remove the three screws and washers and the bristle strip
retained by them. Install the new strip and assemble the
retaining screws and washers. Be sure to install the "V" of
each strip in the same relation to the core as its companion
strips. (See Fig. 11)
Fig. 10
Fig. 1 1
CLARKE TECHNOLOGY Model SPS-28 Space Sweeper Operator's Manual Page 13
Page 4
Installation of New Main Brush (cont)
Remove the three screws and washers and the bristle
strip retained by them. Install the new strip and assemble
the retaining screws and washers. Be sure to install the
"V" of each strip in the same relation to the core as its
companion strips. (See Fig. 11, page 11)
CAUTION:The strips must be carefully centered
on the core before they are firmly
locked into position. Rotate the broom
by hand through a full revolution to
check for possible interference with
the shaft carriers at each end. Failure
to check this area could result in
damage to the drive mechanism.
Continue to replace one strip at a time, checking end
clearance on each end, until all strips have been replaced with new fillers.
Readjust the broom to allow for the new bristle strips.
The main brush is preadjusted at the factory to insure
even engagement with the floor across its full width.
However, should the brush show signs of uneven wear,
end to end, compensating adjustments may be made.
Raise or lower either end as required by changing the
length of the adjusting rod. (See fig. 12)
Fig. 12
SHOP EVALUATION OF CHARGERS
(Qualified Service Personnel Only)
Service Hints
1.Check the AC power supply (plug, cords, building
fuses and switched, etc.)
2.Check for physical damage.
3.If there is no DC output, check for blown internal
fuse(s); blown fuses may be caused by reversed DC
connections or by a defective diode.
4.Check parts - ammeter, timer-switch, diodes, transformer and fuses for tight connections and for
discoloration due to electrical failure.
WARNING: Always wear eye and face shield,
and protective clothing when
working with batteries to avoid
injury.
5.Check the condition of the batteries.
a.Specific gravity (1.280 is ideal for fully charged
batteries.
b. The battery bank voltage should come up to
about 30.7 volts at the end of the cycle.
c. The DC charging current should start in the
"normal" range and end in the "finish" range.
If the charger is still inoperative after the above checks
have been made, call your nearest authorized service
center.
Page 14CLARKE TECHNOLOGY Model SPS-28 Space Sweeper Operator's Manual
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Capacitor T est
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If a commercial capacitor checker is not available, the
following test may be made:
1. Briefly short the capacitor terminals together with a
screwdriver.
2. Disconnect a wire from either capacitor terminal.
3. Adjust an ohmmeter to a high value such as RX10K or
RX1 Meg.
4. Connect the ohmmeter leads to the capacitor terminals.
5. A good capacitor will cause the indicator to move quickly
to zero ohms, then slowly return to infinite ohms. An
open capacitor will not cause any indicator movement; a
shorted capacitor will give a continuous zero ohms
reading.
6. If the test is to be repeated, the capacitor terminals must
again be shorted together briefly .
Diode T est
1. Y ou must have a #308 ct. Everready continuity tester or
equivalent/
2. Desolder both wires from the diode lead connections.
(Clamp heatsink pliers on the diode leads to avoid
damaging the diodes.)
3. Attach one of the test unit leads to either diode lead.
4. Attach the other test unit lead to the diode heatsink.
5. Turn the test unit on and note if the test unit bulb lights.
DANGER:Reversing charge or polarity of wiring
could cause batteries to EXPLODE causing serious bodily harm to yourself or
others.
6.. Reverse the test unit leads in Steps 3 and 4.
7. Turn the test unit on and note if the test unit bulb lights.
8. Good diode - test light bulb should light up in one of
Step s 5 and 7 and not in the other .
Defective diode - test bulb will light up in both
Steps 5 and 7.
Defective Diode - Test bulb will not light up in either
Steps 5 or 7.
CLARKE TECHNOLOGY Model SPS-28 Space Sweeper Operator's Manual Page 15
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92
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93
CLARKE TECHNOLOGY Model SPS-28
Main Frame, Brush Assembly and Drive System Drawing 1/99
4
2
5
49
21
6
4
1
14
3
81
80
78
89
49
66
94
28
42
69
95
49
62
42
3
42
68
87
74
59
69
24
22
20
31
23
83
82
19
33
70
84
32
46
26
3
25
70
13
22
60
71
43
96
14
13
88
90
22
12
22
45
11
37
37
20
10
72
55
56
53
51
2
52
34
54
52
57
15
16
17
18
10
18
22
27
24
25
26
26
25
73
4
6
5
4
82
49
65
82
42
86
30
42
29
7
8
33
31
32
27
35
85
49
58
49
74
75
28
95
76
77
47
49
50
32
78
34
38
28
4
10
11
12
27
28
29
39
36
40
41
48
44
49
49
69
62
33
25
24
6
5
4
96
Page 16CLARKE TECHNOLOGY Model SPS-28 Space Sweeper Operator's Manual
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Page 7
CLARKE TECHNOLOGY Model SPS-28
IVIE Enterprises
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Main Frame, Brush Assembly and Drive System Parts Lists 1/99
CLARKE TECHNOLOGY Model SPS-28 Space Sweeper Operator's Manual Page 17
Page 8
CLARKE TECHNOLOGY Model SPS-28
Engine, Dust Control & Handle Assembly Drawing 4/99
34
62
46
66
26
25
22
26
94
93
23
11
11
92
47
48
83
63
71
64
65
15
11
67
70
26
59
50
49
69
52
8
53
72
24
60
26
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51
58
12
3
10
4
5
96
6
1791
34
9
8
13
95
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90
18
19
20
83
21
56
57
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75
11
78
8
78
40
8
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7
82
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81
68
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74
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28
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1
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Page 18CLARKE TECHNOLOGY Model SPS-28 Space Sweeper Operator's Manual
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CLARKE TECHNOLOGY Model SPS-28
IVIE Enterprises
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Engine, Dust Control & Handle Assembly 4/99
Ref # Part No.DescriptionQty
160072AFrame, Main1
2u 792920Engine, 5 H.P. Briggs and Stratton1
3285161Label, Gasoline1
4722824Elbow, ¼ x 45° Street Brass1
5755721Nipple, ¼ x 2½" Brass1
6822806Elbow, ¼ x 90° Brass1
7Drain Plug - Part of Engine
5
8822806Washer
/16 Lock8
9196157Screw, 5/16 -18 x 1¼ Hex4
10796924Pulley, Engine1
11962103Screw,