SPX 1788A Manuale utente
Sheet No. of 3
Issue Date: Rev. E August 3, 2005
© 2003 SPX Corporation
Form No. 520698
Parts List &
Operating Instructions
for: 1788A
1
SPX Corporation
655 Eisenhower Drive
Owatonna, MN 55060-0995 USA
Phone: (507) 455-7000
Tech. Serv.: (800) 533-6127
Fax: (800) 955-8329
Order Entry: (800) 533-6127
Fax: (800) 283-8665
International Sales: (507) 455-7223
Fax: (507) 455-7063
Air / Hydraulic Under Axle Jack
Max. Capacity: 22 Tons
63
64
51
52
53
55
56 575859
61
71
60
62
72
63
23
22
21
73
74
67
54
116
108
107
106
105 104103102
101
110
111
112
113
114
100
40
89
90
91
93
94
95
96
97
98
99
88
41
42
43
44
45
46
47
48
49
39
38
37
36
35
34
50
27
28
29
30
31
32
33
20
86 115
3
4
5
6
7
24
11
12
25
26 15
16
17
13
14
18
19
275 87
65
66
79
8081
8283
8485
76 77 78
21
68
69
70 117
These instructions have been written to help the user more
effectivelyuseandmaintainOTCjacks.Someoftheinformation
applying to construction, installation, operation, inspection,
and maintenance of hydraulic jacks was selected from ANSI
B30.1 and ASME/ANSI PALD-1. It is strongly recommended
thattheuserreadthesetwodocuments,whichmaybeordered
from the American Society of Mechanical Engineers, 22 Law
Drive, P.O. Box 2900, Fairfield, New Jersey 07007-2900.
Parts List & Operating Instructions Form No. 520698, Sheet 1 of 3, back
Item No. Qty. Description
12Snap Ring
22Wheel
31Spring Hanger
41Snap Ring
51Bushing
61O-ring
71Bushing
11 1 Washer
12 1 O-ring
13 1 Oil Filler Plug
14 1 Oil Cylinder Assembly
15 2 Nut
16 2 Spring
17 2 Bolt
18 3 Bolt
19 3 O-ring
20 1 20 mm Extension Adapter
21 1 20 mm Extension Adapter
22 1 60 mm Extension Adapter
23 1 100 mm Extension Adapter
24 1 Piston Ring
25 1 Washer
26 1 Snap Ring
27 1 Valve Block
28 1 Steel Ball
29 1 Pin
30 1 Steel Ball
31 1 Spring
32 1 Copper Washer
33 1 Bolt
34 1 Steel Ball
35 1 Ball Seat
36 1 Spring
37 1 Screw
38 1 Sealing Washer
39 1 Valve Plug Screw
40 1 Steel Ball
41 1 Sealing Washer
42 1 Release Valve Rod
43 8 Rivet
44 1 Universal Joint A
45 2 Block
46 1 Universal Joint B
47 1 Rod
48 1 Universal Joint C
49 1 Universal Joint D
50 1 Pin
51 1 Knob
52 1 Pin
53 1 Rear Handle
54 1 Front Handle
55 2 Handle Sleeve
56 1 Sleeve
57 1 Lock Lever
58 1 Pin
59 2 Bolt
Replacement Parts
60 1 Spring
61 1 Control Rod A
62 1 Control Rod B
63 2 Convey Rod
64 1 Rod Joint
65 1 Handle Socket
66 1 Bolt
67 2 U-bolt
68 1 Fix Board
69 4 Spring Washer
70 4 Nut
71 1 Nut
72 1 Screw
73 1 Rod Joint
74 1 Pin
75 1 Frame Left
76 1 Frame Right
77 4 Washer
78 4 Bolt
79 1 Bed
80 4 Washer
81 4 Bolt
82 4 Washer
83 4 Bolt
84 4 Washer
85 4 Bolt
86 1 Cover Board
87 1 Bracket
88 1 Cylinder Pump
89 1 Y-Sealing Washer
90 1 Nylon Washer
91 1 Copper Washer
93 1 O-ring
94 1 Hex Nut
95 1 Spring
96 1 Washer
97 1 Pump Plunger
98 1 Washer
99 1 O-ring
100 1 Copper Washer
101 1 Piston
102 1 O-ring
103 1 O-ring
104 1 Sealing Washer
105 1 Copper Joint Ring
106 1 Air Hose (with Air Valve)
107 1 Washer
108 1 Bolt
110 1 Release Air Rod
111 1 O-ring
112 1 O-ring
113 1 Cylinder Cover
114 4 Bolt
115 1 Power Unit Assembly
116 1 Air Pump Assembly
117 3 Hairpin Clip
Item No. Qty. Description
Sheet No. of 3
Issue Date: Rev. E August 3, 2005
© 2003 SPX Corporation
Item
No. Qty. Description
Item
No. Qty. Description
Adapter 1 — No. 520712:
20 1 Extension Adapter
(20 mm x 68.5 mm dia.)
117 1 Hairpin Clip
Adapter 2 — No. 520713:
21 1 Extension Adapter
(20 mm x 48 mm dia.)
117 1 Hairpin Clip
Adapter 3 — No. 520714:
22 1 Extension Adapter
(60 mm x 48 mm dia.)
117 1 Hairpin Clip
Adapter 4 — No. 520715:
23 1 Extension Adapter
(100 mm x 48 mm dia.)
117 1 Hairpin Clip
Adapter Rack Assembly
No. 520711:
67 2 U-bolt
68 1 Fix Board
69 4 Spring Washer
70 4 Nut
Air Block Assembly
No. 520708:
18 3 Bolt
19 3 O-ring
27 1 Valve Block
28 1 Steel Ball
29 1 Pin
30 1 Steel Ball
31 1 Spring
32 1 Copper Washer
33 1 Bolt
34 1 Steel Ball
35 1 Ball Seat
36 1 Spring
37 1 Screw
38 1 Sealing Washer
39 1 Valve Plug Screw
50 1 Pin
Air Hose Kit
No. 520703:
105 1 Copper Joint Ring
106 1 Air Hose (w/ air valve)
107 1 Washer
108 1 Bolt
Air Pump Hardware
No. 520730:
88 1 Cylinder Pump
94 1 Hex Nut
95 1 Spring
96 1 Washer
97 1 Pump Plunger
101 1 Piston
110 1 Release Air Rod
113 1 Cylinder Cover
114 4 Bolt
Air Pump Kit
No. 520702:
116 1 Air Pump Assembly
Air Seal Kit
No. 520700:
89 1 Y-sealing Washer
90 1 Nylon Washer
91 1 Copper Washer
93 1 O-ring
98 1 Washer
99 1 O-ring
100 1 Copper Washer
102 1 O-ring
103 1 O-ring
104 1 Sealing Washer
105 1 Copper Joint Ring
111 1 O-ring
112 1 O-ring
Frame Kit
No. 521987:
75 1 Frame Left
76 1 Frame Right
87 1 Bracket
Handle Kit
No. 520704:
51 1 Knob
52 1 Pin
53 1 Rear Handle
54 1 Front Handle
55 2 Handle Sleeve
56 1 Sleeve
57 1 Lock Lever
58 1 Pin
59 2 Bolt
60 1 Spring
61 1 Control Rod A
62 1 Control Rod B
63 2 Convey Rod
64 1 Rod Joint
71 1 Nut
72 1 Screw
73 1 Rod Joint
74 1 Pin
Handle Pivot Kit
No. 520706:
65 1 Handle Socket
Handle Retaining Screw
No. 520710:
66 1 Bolt
Hardware Kit
No. 521988:
77 4 Washer
78 4 Bolt
80 4 Washer
81 4 Bolt
82 4 Washer
83 4 Bolt
84 4 Washer
85 4 Bolt
Item
No. Qty. Description
Replacement Kits
Hydraulic Seal Kit
No. 520699:
41Snap Ring
51Bushing
61O-ring
71Bushing
11 1 Washer
12 1 O-ring
13 1 Oil Filler Plug
19 3 O-ring
24 1 Piston Ring
25 1 Washer
26 1 Snap Ring
Hydraulic Unit Kit
No. 520701:
82 4 Washer
83 4 Bolt
115 1 Power Unit Assembly
Inspection Plate
No. 520729:
84 4 Washer
85 4 Bolt
86 1 Cover Board
Release Screw Assembly
No. 520707:
40 1 Steel Ball
41 1 Sealing Washer
42 1 Release Valve Rod
43 8 Rivet
44 1 Universal Joint A
45 2 Block
46 1 Universal Joint B
47 1 Rod
48 1 Universal Joint C
49 1 Universal Joint D
50 1 Pin
Return Spring Assembly
No. 520709:
31Spring Hanger
15 2 Nut
16 2 Spring
17 2 Bolt
Skid Plate
No. 520827:
79 1 Bed
80 4 Washer
81 4 Bolt
Wheel Kit
No. 520705:
11Snap Ring
21Wheel
2
Parts List & Operating Instructions Form No. 520698
U-bolt
Spring,
Washers,
& Nuts
ll
ll
l
Adapter
Holder
Figure 1
Safety Precautions
WARNING: Failure to heed the following warnings can result in personal injury and / or equipment
damage. These warnings cannot cover every situation, so have safety foremost in your mind when
setting up a job.
•Read, understand, and follow safety precautions and operating instructions. If the
operatorcannotreadtheseinstructions,operatinginstructionsandsafetyprecautions
must be read and discussed in the operator’s native language.
•Wear eye protection that meets the requirements of ANSI Z87.1 and OSHA.
•Inspect the jack before each use; do not use the jack if it is damaged, altered, or in poor
condition.
•To prevent tipping, set up the jack on a hard, level surface.
•The load must not exceed the rated lifting capacity of the jack. Lift only dead weight.
•Center the load on the jack saddle; off-center loads can damage the seals and cause
hydraulic failure.
•Use the jack for lifting purposes only. This jack is designed to LIFT loads, not support
loads. Immediately support a lifted load with jack stands.
•Stay clear of lifted loads.
•The safety valve is set at the factory; no further adjustment is needed.
•Useonlyapprovedhydraulicfluid,suchasChevronAWHydraulicOilMVorequivalent.
Setup Instructions
1. Add1/2oz.cleanlubricatingoiltotheairinlet,andconnecttheairsupply.IMPORTANT:Topreventdamage
to the air pump, the air supply must be clean and dry.
2. Assemblethe adapter holder tothe handle using U-bolts,nuts, and spring washersprovided. See Figure 1.
NOTE:
When not using the adapters, store them on the holder. Lock each adapter in place with a hitch pin.
Parts List & Operating Instructions Form No. 520698, Sheet 2 of 3, back
Operating Instructions
1. Tightly close the release valve knob (located on top of the “T” handle) by turning it clockwise.
2. Centerthe load on the jack saddle.Connecttheairsupply, and squeeze the airvalvelevertoraise the load.
Release the air valve lever to stop movement.
3. Transfer the load to support stands.
4. To lower the jack, open the release valve knob by SLOWLY turning it counterclockwise.
NOTE:
To adjust the handle, pull up and then release the lever to lock it in one of three positions.
Bleeding the Jack
Airbubblescanbecometrappedinsidethe hydraulicsystem, reducingthe efficiencyof thejack.Purgeairfrom
the system as needed by following these steps:
1. With the jack sitting on its base and the ram retracted, bleed air by opening the release valve.
2. Pump for 10 seconds.
Sheet No. of 3
Issue Date: Rev. E August 3, 2005
© 2003 SPX Corporation
Operating Instructions
Hex Socket
Bolt
Release
Valve
Figure 2
Preventive Maintenance
IMPORTANT:Dirtisthegreatestsinglecauseoffailureinhydraulicunits.Keepthejackcleanandwelllubricated
to prevent foreign matter from entering the system. If the jack has been exposed to rain, snow, sand, or grit, it
must be cleaned before it is used.
1. When the jack is not in use, keep the piston and pump rods fully retracted. Store the jack on its base and in a well
protected area where it will not be exposed to corrosive vapors, abrasive dust, or any other harmful elements.
2. Maintaintheoillevel.Ifit’snecessarytoaddoil,removethefillerplug,andfillthereservoirwithChevronAWHydraulic
Oil MV or equivalent.
3. Visually inspect the jack before each use. Take corrective action if any of the following problems are found:
a. Cracked or damaged housing e. Incorrectly functioning swivel heads or adj. screw
b. Excessive wear, bending, or other damage f. Loose hardware
c. Leaking hydraulic fluid g. Modified or altered equipment
d. Scored or damaged piston rod
3
Parts List & Operating Instructions Form No. 520698
Pump Prime Instructions
The air/hydraulic pump may lose its prime during shipment or after long
periods without use. To prime the pump, follow these steps:
1. Remove the upper cover.
2. Loosen the hex socket bolt one-half turn. See Figure 2.
3. Close the release valve.
4. Operate the air pump while repeatedly tightening and loosening the bolt.
5. When the piston begins to rise, tighten the bolt. Verify the piston can rise
to the maximum height position.
Trouble Cause Solution
Erratic Action 1. Air in system
1. With jack sitting on its base and ram retracted,
bleed air by opening release valve. Pump 10 seconds.
2. Viscosity of oil too high
2. Change to a lower viscosity oil.
3. Ram sticking or binding
3. Look for dirt, gummy deposits, leaks, misalignment,
worn parts, or defective packings.
4. Internal leakage in ram
4. Replace worn packings. Look for excessive
contamination or wear.
Ram does not advance 1. Release valve is open
1. Close release valve located on top of “T” handle.
2. Low/no oil in reservoir
2. Fill with oil & bleed system.
3. Air locked system
3. With jack sitting on its base and ram retracted,
open release valve, run pump for 10 seconds.
4. Load is above capacity of system
4. Use correct equipment.
5. Pump lost its prime
5. Follow “Pump Prime Instructions.”
Ram only extends partially 1. Low oil level in reservoir
1. Fill reservoir with oil; bleed system.
2. Piston rod is binding
2. Look for dirt, gummy deposits, leaks, misalignment,
worn parts, or defective packings.
Ram advances slowly 1. Low air pressure
1. Adjust air pressure to 90–145 psi.
2. Pump not working correctly
2. Rework pump.
3. Leaking seals
3. Replace seals.
Ram advances but doesn’t 1. Release valve is open
1. Close release valve located on top of T” handle.
hold pressure 2. Ram seals are leaking
2. Replace seals.
3. Pump check valve not working
3. Clean / replace check valve.
4. Overload valve leaking / not adjusted 4. Replace / adjust overload valve.
Jack leaks oil 1. Worn or damaged seals
1. Replace seals.
Ram will not retract, or 1. Release valve is closed
1. Open release valve.
retracts slowly 2. Reservoir too full
2. Drain oil to correct level.
3. Ram damaged internally
3. Take jack to authorized service center for repair.
Troubleshooting Guide
Repairs must be performed in a dirt-free environment by qualified personnel who are familiar with this equipment.
Indice
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