Autoprime Parts Book
AC50 & AC75 Pump Sets
Manual No./ Part / Rev
W72-004E / 1 / 9
AC50 and AC75
Pump Sets
Unit assembly numbers:- Hand Start, Vacuum pressure seal SY3861012
Electric Start, Vacuum pressure seal 13813
Options for mechanically sealed pumps are also included
CONTENTS
1. MATCHING PIECE, VOLUTE & SHAFT ASSEMBLY ................................... 2
1.1 VACUUM PRESSURE SEAL..........................................................2
1.2 MECHANICAL SEAL......................................................................3
2. PRIMING EQUIPMENT & REFLUX BOX.....................................................4
3. VACUUM PUMP & DRI VE......................................................................... 5
3.1 VACUUM PUMP & OILER ..............................................................6
4. CHASSIS & FUEL TANK...........................................................................7
5. ENGINE....................................................................................................7
6. BATTERY & FITTINGS - (ELECTRIC START ONLY) ...................................8
7. BAUER FITTINGS.....................................................................................8
7.1 TWO INCH FITTINGS .....................................................................8
7.2 THREE INCH FITTINGS.................................................................. 8
8. LABELS & TRANSFERS........................................................................... 9
9. OPTIONAL EXTRAS................................................................................. 9
10. WIRING DIAGRAM .................................................................................9
Produced by SPP Pumps Limited Coleford England Revision No 9 on Rev Note No 34842 on 03-11-06
Our policy is one of continuous improvement and we reserve the right to alter specifications at any time
Page 1 of 10
Manual No./ Part / Rev
W72-004E / 1 / 9
Autoprime Parts Book
AC50 & AC75 Pump Sets
1. MATCHING PIECE, VOLUTE & SHAFT ASSEMBLY
1.1 VACUUM PRESSURE SEAL
ITEM
7 Stub shaft SY3864009 1
8 End cap SY3874017 1
9 Packing carrier SY3864109 1
10 Sleeve SY3864011 1
11 O ring SY3804166 1
12 Compression spring SY3804160 1
13 Gasket SY5004410 1
14 Shim pack SY3864013 1
15 Screw: M8 x 20 SY9519097 1
16 Washer: spring M8 SY9509806 5
17 Screw: M8 x 45 SY9519103 4
18 Gland packing 12614 205mm
19 Impeller assembly SY3864044 1
19A Wear ring SY3864014 1
22 Stud: M10 x 25 SY9509087 9
23 Washer: M10 SY9509679 1
24 Nut: M10 SY9509653 9
27 Volute SY3864001 1
35 Gasket SY5004425 5
42 Washer: M6 SY9509676 1
DESCRIPTION PART No QTY
ITEM
45 Washer: M8 SY9509678 4
56 Screw SY3874045 1
63 Lifter bracket SY3864030 1
68 Guard: flywheel SY3864035 4
82 Cock: drain SY9209431 1
84 Nut: 3/8"UNC SY9019425 8
86 Washer: spring 3/8" SY9019373 8
93 Screw: M10 x 20 SY9519117 1
114 Washer: spring M6 SY9509805 1
116 Washer: spring M10 SY9509807 10
130H Stud: 3/8UNC x 1 ¾” 21713-325-224-8 8
130E Stud: 3/8UNC x 3” 21713-336-224-0 8
131 Gasket SY5004432 1
143H Support brkt-lifter SY3864099 1
143E Support brkt-lifter 09762 1
152 Spring gaitor SY3804412 1
Suffixes: H = Hand start
E = Electric start
DESCRIPTION PART No QTY
Our policy is one of continuous improvement and we reserve the right to alter specifications at any time
Page 2 of 10
1.2 MECHANICAL SEAL
Autoprime Parts Book
AC50 & AC75 Pump Sets
Manual No./ Part / Rev
W72-004E / 1 / 9
ITEM
6 Matching piece SY3864110 1
7 Stub shaft SY3864009 1
8 Housing: m/seal 15486.524 1
9 Nipple: ½”BSP/T 15579 1
10 Hose tail: ½”BSP x
11 Seal: Mech. 45mm 13763 2
12 Sleeve: shaft-m/seal 15363.347 1
13 Gasket 15359 1
14 Shim pack SY3864013 1
15 Screw: M8 x 20 SY9519097 1
16 Washer: spring M8 SY9509806 5
17 Screw: skt cap M8 x
18 O ring: 25 I/D x 3mm 15413 2
19 Impeller 15434 1
19A Sleeve: impeller
22 Stud: M10 x 25 SY9509087 9
23 Washer: M10 SY9509679 1
DESCRIPTION PART No QTY
12149 1
19mm
21835-144-977-2 4
50
15349.221 1
m/seal
ITEM
24 Nut: M10 SY9509653 9
27 Volute SY3864001 1
35 Gasket SY5004425 5
42 Plate: primary m/seal 15360.347 1
44 Nut: M8 SY9509652 1
45 O ring: 100 I/D x 3mm 15414 1
56 Circlip: int. 100mm 15415 1
63 Lifter bracket SY3864030 1
68 Guard: flywheel SY3864035 4
82 Cock: drain SY9209431 1
84 Nut: 3/8"UNC SY9019425 8
86 Washer: spring 3/8" SY9019373 8
93 Screw: M10 x 20 SY9519117 1
116 Washer: spring M10 SY9509807 10
130H Stud: 3/8UNC x 1 ¾” 21713-325-224-8 8
130E Stud: 3/8UNC x 3” 21713-336-224-0 8
131 Gasket SY5004432 1
143 Support brkt-lifter 09762 1
DESCRIPTION PART No QTY
Our policy is one of continuous improvement and we reserve the right to alter specifications at any time
Page 3 of 10
Manual No./ Part / Rev
The following p
art are only fitted to mechanically sealed
W72-004E / 1 / 9
Autoprime Parts Book
AC50 & AC75 Pump Sets
2. PRIMING EQUIPMENT & REFLUX BOX
ITEM
15 Screw: M8 x 20 SY9519097 4
16 Washer: spring M8 SY9509806 4
21 Seat: reflux box SY3864045 1
28 Valve SY9209730 1
30 Priming tank SY3864004 1
33 Stud: M10 x 150 SY9509113 2
34 Ball: Non return valve 08074 1
36 Nut: bow M10 SY9529273 2
37 Top cover SY3864075 1
38 Filter cover SY3864076 1
39 Gasket 15490 1
40 Gasket 15491 1
43 Stud: M8 x 20 SY9509045 10
44 Nut: M8 SY9509652 4
45 Washer: M8 SY9509678 4
46 Filter SY3614044 1
47 Valve module SY3864098 1
50 Valve seat SY3864104 2
51 Connecting boss SY3864022 1
52 Valve pin SY3864023 1
53 Fulcrum pin SY3864024 1
54 Fulcrum arm SY3864025 1
55 Float: primary SY3454417 1
57 Float rod SY3864027 1
DESCRIPTION PART No QTY
ITEM
58 Nut: M6 SY9019612 1
59 Washer: starlock M6 SY9519256 4
61 Reflux box SY3864002 1
66 Handle assembly SY3864033 1
109 Hand grip SY3304071 2
119 Knob SY9529274 6
129 Float weight SY3864072 1
141 Bush SY9059400 1
146 Union: 3/8" BSP SY9209255 1
147 Joint SY5004022 1
43 Stud: M8 x 25 SY9509047 2
200 Mtg. Plate: bottle 15592 1
201 Cap: screw - bottle 15431 1
202 Bolt: M10 x 90 12204 1
203 Washer: spring M10 SY9509807 1
204 Washer: M10 SY9509679 1
205 Spacer: set 14641 1
206 Bottle: reservoir 15430 1
207 Tube: 8 I/D 15654 400
208 Hose clip: 18-25mm 05837 5
209 Hose: ¾ I/D wired 15520 250
210 Tee, male: 19mm 15521 1
211 Assy: hose ¾” I/D 15580 1
DESCRIPTION PART No QTY
Our policy is one of continuous improvement and we reserve the right to alter specifications at any time
Page 4 of 10
3. VACUUM PUMP & DRIVE
Autoprime Parts Book
AC50 & AC75 Pump Sets
Manual No./ Part / Rev
W72-004E / 1 / 9
ITEM
15 Screw: M8 x 20 SY9519097 1
16 Washer: spring M8 SY9509806 2
20 Key: 3/16"sq x 1 1/4" SY3864078 1
42 Washer: M6 SY9509676 4
44 Nut: M8 SY9509652 1
45 Washer: M8 SY9509678 3
64 Bracket SY3864100 1
65H Guard 11664 1
65E Guard SY3864032 1
73* Vacuum pump + oiler SY7951002 1
74 Pulley: 90 dia SY3864040 1
75 Pulley: 75 dia SY3864041 1
76 Belt: SPZ SY3864042 1
77 Bush: t/lock 1108 SY9059340 1
78 Bush: t/lock 1210 SY9059119 1
87 Screw: 5/16"UNC x
DESCRIPTION PART No QTY
SY9019640 3
3/4"
ITEM
113 Stud: M6 x 25 SY9509007 4
114 Washer: spring M6 SY9509805 4
124 Washer: 5/16" SY9019351 3
125 Elbow M/F 1/4"BSP
126 Screw: M8 x 12 SY9519093 1
144 Hose SY3864101 1
145 Hose SY3864102 1
146 Union: 3/8 x 3/8"BSP SY9209255 1
147 Joint SY5004022 1
148 Tee piece: 1/4"BSP SY9209463 1
150 Washer: M!2 SY9509680 1
151 Nut: M6 SY9509651 4
Suffixes: H = Hand start
E = Electric start
= For details see Section 3.1
DESCRIPTION PART No QTY
SY9209041 1
(fitted to fuel filter)
Our policy is one of continuous improvement and we reserve the right to alter specifications at any time
Page 5 of 10
Manual No./ Part / Rev
W72-004E / 1 / 9
3.1 VACUUM PUMP & OILER
Autoprime Parts Book
AC50 & AC75 Pump Sets
ITEM DESCRIPTION PART No QTY
1 Blade U-S8326 4
2 Cylinder U-S8035 1
3 Cover plate - B.E. U-S8087/IZP 1
4 Cover plate - D.E. U-S8087/2ZP 1
5 End cap U-S8088 2
6 Rotor and shaft
assembly
7 Shaft sleeve - D.E. U-S8090/3 1
8 Shaft sleeve - B.E. U-S8090/4 1
9 Sealed bearing U-H1022 2
10 Seal bush U-F1032 2
U-S8407ZP 1
ITEM DESCRIPTION PART No QTY
11 Thrust washer U-B1037 1
12 Dowel U-E1000 4
13 Skt hd cap screw U-G1121 4
14 Skt hd cap screw U-G1090 2
15 Csk hd screw U-G1155 6
16 Shim U-K1008 A/R
17 Thrower ring U-S8260 2
18 Elbow U-M1007 1
19 Exhaust silencer U-SK1375/2 1
20 Oiler U-S9146 1
Our policy is one of continuous improvement and we reserve the right to alter specifications at any time
Page 6 of 10
4. CHASSIS & FUEL TANK
Autoprime Parts Book
AC50 & AC75 Pump Sets
Manual No./ Part / Rev
W72-004E / 1 / 9
ITEM
24 Nut: M10 SY9509653 4
36 Nut: bow M10 SY9529273 1
62H Chassis/fuel tank SY3864029 1
62E Chassis/fuel tank 09761 1
69 Wheel SY3864036 2
71 Split pin SY9519027 2
79 Filler cap SY3354079 1
80 Hose SY3864043 1
81 Union: 1/4"x 1/4"BSP SY9209253 1
DESCRIPTION PART No QTY
5. ENGINE
ITEM
93 Screw: M10 x 20 SY9519117 1
110 Plug: 1 1/2"BSP SY9209166 1
111 Washer: 1" SY9019359 4
115 Screw: M10 x 25 SY9519121 4
116 Washer: M10 SY9509807 5
128 (pre 9/98) Grommet SY3864049 1
(post 9/98) Hose tail:
Item suffixes H = Hand start
E = Electric start
DESCRIPTION PART No QTY
14221 1
1/8"BSP x 1/8"
ITEM DESCRIPTION PART No QTY STARTING
1H Engine: AD1 SY7041012 1 Hand
1E Engine: AD1 09760 1 Electric
2E Bracket: keyswitch 13096 1 Electric
Our policy is one of continuous improvement and we reserve the right to alter specifications at any time
Page 7 of 10
Manual No./ Part / Rev
W72-004E / 1 / 9
Autoprime Parts Book
AC50 & AC75 Pump Sets
6. BATTERY & FITTINGS - (electric start only)
ITEM
1 Battery: 12v SY7004404 1
2 Cover: battery 09763 1
3 +ve lead: battery 13814 1
4 - ve lead: battery 13815 1
5 Screw: M6 x 16 03386 5
DESCRIPTION PART No QTY
7. BAUER FITTINGS
7.1 TWO INCH FITTINGS
ITEM
2 2" BSP Bauer male SY3194043 1
3 2" Lever closure ring SY3194261 1
4 2" BSP Bauer female,
5 Bush: red. 3 - 2" 09076 1
DESCRIPTION PART No QTY
SY3194044
c/w (1) 2" Seal ring
SY3194287
ITEM
6 Washer: M6 03406 5
7 Screw: M8 x 20 SY9519097 2
8 Washer: spring M8 SY9509806 2
9 Nut: M8 SY9509652 2
DESCRIPTION PART No QTY
ITEM
6 2" Split intake assy.
1
2" Intake half SY1814186 2
3" Sealing ring SY3194288 1
DESCRIPTION PART No QTY
SY1812037 1
comprises:
7.2 THREE INCH FITTINGS
ITEM
2 3" BSP Bauer male
4 3" BSP Bauer female,
DESCRIPTION PART No QTY
13504 1
c/w (3) closure ring
13505
c/w (1) 3" Seal ring
Our policy is one of continuous improvement and we reserve the right to alter specifications at any time
SY3194288
1
ITEM
6 3" Split intake assy.
comprises:
3" Intake half SY1814187 2
3” Strainer restrictor 14675 1
4" Sealing ring SY3194289 1
Page 8 of 10
DESCRIPTION PART No QTY
14697 1
AC50 & AC75 Pump Sets
8. LABELS & TRANSFERS
(not illustrated)
DESCRIPTION PART No QTY
Weight plate 12628 1
Label: frost warning SY2994128 1
Transfer - Lift here SY2994109 1
Transfer - AC50 & AC75/6 12262 1
9. OPTIONAL EXTRAS
(not illustrated)
DESCRIPTION PART No QTY
Spark arrestor 13640 1
Exhaust clamp: 35mm 13045 1
Autoprime Parts Book
DESCRIPTION PART No QTY
Transfer - Sterling SPP 12263 1
Transfer - Chevrons 12264 1m
Transfer: safety 12627 1
Manual No./ Part / Rev
W72-004E / 1 / 9
10. WIRING DIAGRAM
Our policy is one of continuous improvement and we reserve the right to alter specifications at any time
Page 9 of 10
Manual No./ Part / Rev
W72-004E / 1 / 9
Autoprime Parts Book
AC50 & AC75 Pump Sets
Our policy is one of continuous improvement and we reserve the right to alter specifications at any time
Page 10 of 10
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