OTC 1728 User manual

Form No. 102737
Parts List &
Operating Instructions
for: 1728
014-00942
High Lift Transmission Jack
Max. Capacity: 1,000 lbs. at 90 PSI
Safety Precautions
CAUTION: To prevent personal injury and damage to equipment,
•Read, understand, and follow all instructions, including the ANSI B30.1 safety code for
jacks.
•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’s damaged, altered, or in poor
condition.
•A load must never exceed the rated lifting capacity of the jack.
•Use the jack on a hard, level surface.
•Nevermovethejackwithaloadanyhigheroffthegroundthannecessary.SLOWLYAND
CAREFULLY move the jack around corners, because the load could tip.
•Do not modify the jack or use adapters unless approved or supplied by OTC.
•Lower the jack slowly and carefully while watching the position of the load.
•Use only approved hydraulic fluid (Chevron AW Hydraulic Oil MV or equivalent). The use of alcohol,
hydraulic brake fluid, or transmission oil could damage seals and result in jack failure.
This guide cannot cover every situation, so always do the job with safety first.
The High Lift Transmission Jack is designed
for the installation and removal of automobile
transmissions.
525197
Head Assembly

Form No. 102737, Sheet 1 of 5, Back
Operating Instructions
This is a two-stage transmission jack. The air stage is designed to quickly move the adapter into position, and
is completed with an automatic lock function that prevents loss of load. The following hydraulic stage is designed
to align the adapter with the transmission.
1. Lift the vehicle on a hoist.
2. Position the jack under the transmission.
3. Connect the air supply to the jack. (90 psi of clean, dry air is required for the capacity of this jack.)
4. Press the pedal marked UP to raise the adapter until the cylinder locks into place (at about 20 inches). The
air hose can be removed at this time.
CAUTION: If a load is transferred to the adapter when the air cylinder is only partially raised, the
cylinder will drop suddenly. To eliminate this problem, always raise the cylinder to the point where the
mechanical lock engages.
5. Check the placement of the jack. The transmission’s center of weight, or balance point, should be centered
over the jack adapter, with the power output end located over the adapter bracket between the chains. The
jack’s mechanical lock must be engaged.
6. Close the hydraulic release valve by turning the knob clockwise (CW).
7. Pump the jack handle to finish raising the adapter to the transmission. Use the controls on the adapter to
roll or tip the adapter as needed to align it with the transmission.
8. Push in the four adapter brackets until they touch the transmission. Use the chains to secure the
transmission to the adapter.
9. Support the engine, and remove the transmission according to instructions in the vehicle service manual.
10. Slowly turn the hydraulic release valve counterclockwise to lower the hydraulic stage. Lower the air stage
by pressing the DOWN foot pedal. If the load is already resting on the mechanical lock, attach the air hose,
and press the UP pedal briefly so the mechanical lock will release. The air stage should then lower when
the DOWN pedal is pressed.
Bleeding Air from the Hydraulic System
Air can accumulate within a hydraulic system during shipment or after prolonged use. This entrapped air causes
the jack to respond slowly or feel “spongy.” To remove the air:
1. Tilt the jack onto two casters with the pump handle positioned below the cylinder.
2. Open the release valve by turning the knob counterclockwise (CCW).
3. Pump the handle until resistance is felt.
4. Close the release valve by turning the knob all the way clockwise (CW).
5. Continue pumping the handle while returning the jack to its upright position.
Parts List & Operating Instructions

Parts List & Operating Instructions Form No. 102737
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Jack Assembly

Form No. 102737, Sheet 2 of 5, Back
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Parts List & Operating Instructions
525197 Head Assembly
Shaded areas reflect the last
revisions made to this form.

Parts List & Operating Instructions Form No. 102737
Hydraulic Unit
If the hydraulic unit needs service, it can be removed easily for repair or
shipment to a manufacturer-approved service center. If the unit is
shipped,removetheplatformassemblyandhandletominimizepackage
size and weight. The hydraulic unit will separate from the jack by
removing the gland nut.
Refer to any operating instructions included with the product for detailed information about
operation, testing, disassembly, reassembly, and preventive maintenance.
Items found in this parts list have been carefully tested and selected by OTC. Therefore:Use
only OTC replacement parts!
Additional questions can be directed to the OTC Technical Services Department.
Gland Nut
Hydraulic Unit Detail
65,66 63 62 61 60 59 64
85 84 83 82 81 85 80 79 78 77 76 74,75 73 72 71 70 69 68 67

Description
Item
No. Part
No. No.
Req'd
11728-01 1 Hydraulic Unit
21728-02 2 Retaining Ring (1/8")
31728-03 1 Pump Shaft
41728-04 1 Transmission Bracket
541728-05 4 Roll Pin (1/4" x 1-1/2")
61728-06 1 Pump Handle Rod
71728-07 1 Handle Grip (7/8" ID)
8u1728-08 1 Wiper Ring (2")
9u1728-09 1 Felt Ring (2-3/4" OD)
10 1728-10 1 Gland Nut (4" bore;
for serial no. 83-225639 and below)
507530 1 Gland Nut (4" bore; for serial no. 83-225640 and above)
11 1728-11 1 Piston Rod (for serial no. 83-225639 and below)
507531 1 Piston Rod (for serial no. 83-225640 and above)
12 u1728-12 1 Seal (4" dia.)
13 u1728-13 1 Ring Wiper (4" bore)
14 1728-14 1 Self-locking Nut (1/4"-20)
15 1728-15 1 Pedal (UP)
517189 1 Pedal (UP)
(for serial no. 48-020001 and above)
16 1728-16 2 Rivet (1/4" x 1-3/4")
17 1728-17 4 Palnut (1/4")
517190 4 Palnut (1/4")
(for serial no. 48-020001 and above)
18 1728-18 2 Control Rod
517186 2 Control Rod
(for serial no. 48-020001 and above)
19 1728-19 1 Air Valve
21 1728-21 1 Valve Cover
22 1728-22 1 Cap Screw (1/4" x 1-3/4")
23 1728-23 1 Pipe (1/4" x 14-3/4")
24 1728-24 2 Street Elbow (1/4")
25 1728-25 2 Rod End
517187 2 Rod End
(for serial no. 48-020001 and above)
26 1728-26 1 Base Weldment
27 1728-27 2 Caster (4")
28 1728-28 2 Caster w/ Brake (4")
29 1728-29 2 Self-locking Nut (1/2"-13)
30 1728-30 1 Pedal (DOWN)
517188 1 Pedal (DOWN)
(for serial no. 48-020001 and above)
31 1728-31 1 Spring
32 1728-32 3 Drilled Spacer
33 1728-33 5 Roll Pin (3/16" x 7/8")
34 1728-34 2 Cap Screw
35 1728-35 1 Side Tilt Crank
36 1728-36 1 Spacer (not drilled)
37 1728-37 2 Tilt Nut
38 1728-38 4 Ratchet Assembly
39 1728-39 2 Transmission Bracket (long)
40 1728-40 1 Chain & Snap Assembly
517191 1 Strap Assembly
(for serial no. 48-020001 and above)
41 1728-41 1 Transmission Bracket (short)
42 1728-42 1 Chain (1/0; 42 links)
517192 1 Cap Screw & Washer (for serial no. 48-020001 and above)
43 1728-43 4 Roll Pin (1/4" x 7/8")
44 1728-44 1 Adapter Weldment
45 1728-45 3 Angle Stop
Parts List & Operating Instructions

Parts List & Operating Instructions Form No. 102737
Description
Item
No. Part
No. No.
Req'd
46 1728-46 1 Side Tilt Shaft
47 1728-47 2 Tilt Trunnion
48 1728-48 1 Pivot Bracket
49 1728-49 4 Cap Screw (3/8" x 1)
50 1728-50 4 Lockwasher (3/8")
51 1728-51 1 Hydraulic Unit Bracket
52 1728-52 1 Long Tilt Shaft
53 1728-53 1 Crank (lower)
54 1728-54 1 Tow Handle
55 1728-55 4 Hex Jam Nut (1/2")
56 1728-56 4 Lockwasher (1/2")
57 1728-57 4 Self-locking Cap Screw (3/4" long)
59 4
1728-59 1 Jam Nut (3/4"-l 6 UNF)
60 41728-60 1 Rim Washer
61 1728-61 1 Swivel Pivot
62 4 1728-62 1 Pump Sleeve
63 4ju1728-63 1 Seal (13/16" OD x 7/16" ID x 1/4" deep)
64 4j 1728-64 1 Plunger Weldment
65 1728-65 1 Soc. Hd. Cap Screw (5/16"-18 UNC)
66 1728-66 1 Metallic Gasket
67 1728-67 1 Ram Guide
68 u1728-68 1 O-ring (1" OD x 3/16" ID x 3/32" dia.)
69 1728-69 1Cap
70 u1728-70 1 Seal (11/16" OD x 7/16" ID x 3/16" deep)
71 1728-71 1 Magnet
72 1728-72 1 Spacer
(for serial no. 83-225639 and below; not needed for
serial no. 83-225640 and above)
73 1728-73 1 Suction Tube (22-5/8" long)
74 u1728-74 1 Felt Packing Gasket
75 1728-75 1 Packing Gland (2" bore;
for serial no. 83-225639 and below)
507532 1 Packing Gland (2" bore; for serial no. 83-225640 and above)
76 1728-76 1 Ram
77 1728-77 1 Suction Tube (6" long)
78 1728-78 1 Cylinder Tube
79 1728-79 1 Reservoir Tube
80 1728-80 1 Release Knob Sub-assembly
81 1728-81 1 Compression Spring (.406 OD)
82 1728-82 1 Ball (3/8" dia. RC)
83 1728-83 1 Compression Spring (.250 OD)
84 1728-84 1 Ball (1/4" dia. RC)
85 1728-85 2 Plug w/ o-ring
Available Kits
221089 1 Two-piece Plunger Kit (items marked with j)
221088 1 Complete Plunger Kit (items marked with 4
)
221090 1 Soft Seal Kit (3") (items marked with u)
525797 1 Head Assembly

Form No. 102737, Sheet 4 of 5, Back
221598 Adapter Set
(used on 014-00942)
Description
Item
No. Part
No. No.
Req'd
154370 1 Adapter
2313559 1 Mounting Bracket
316469 4 Cap Screw
410204 2 Hex Nut
5221597 1 Stem
610208 1 Hex Nut
1
6
5
42
3
Parts List & Operating Instructions

Figure 1
Parts List & Operating Instructions Form No. 102737
Maintenance
Adding Oil to the Hydraulic Stage (See Figure 1)
1. Position the jack upright with all four casters on the floor. Lower the hydraulic
stage.
2. Remove the transmission adapter by removing the four bolts holding it to the
jack.
3. Clean the top of the jack, concentrating on the area around the filler plug.
4. Remove the release knob. This serves as a vent while the reservoir is being
filled.
5. Remove the filler plug.
6. Slowly add Mobile DTE #11 oil (or equivalent) until the reservoir overflows.
7. Install the release knob.
8. Install the filler plug, and mount the adapter.
Cleaning the Air Control Valve (Item numbers refer to Figure 2)
1. Remove the fittings (1) from the ends of the air control valve. Clean the screen.
2. Insert a nail or stiff wire into the center of the control body (3), and push each valve spool (2) out of the body.
3. Look for foreign matter embedded in the valve seals (4). If this is the case, remove the screw (5) and cup
(6) from the end of the spool, clean the seat, turn it over, and reassemble.
4. Lubricate the valve spool with light chassis grease.
5. Assemble the valve in this order: insert the valve spools; insert the springs; assemble the hexagon fittings
into the body.
Mounting Bolts
Release
Knob
Filler
Plug
6
3
2465
1
15
4
2
Air Valve (1728-19)
1 Fitting
2 Spool
3 Body
4 Seal
5 Screw
6 Cup
Figure 2

Preventive Maintenance
IMPORTANT: The greatest single cause of failure in hydraulic units is dirt. Keep the transmission jack
clean and well lubricated 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. Store the jack in a well-protected area where it will not be exposed to corrosive vapors, abrasive dust, or
any other harmful elements.
2. Lubricate moving parts at least once per month.
3. Regularly wipe the cylinder columns with a clean cloth to remove dirt and abrasives.
4. Replace the oil in the reservoir at least once per year.
5. Inspect the jack before each use. Take corrective action if any of the following problems are found:
a. Cracked or damaged housing d. Scored or damaged piston rod
b. Excessive wear, bending, or other damage e. Loose hardware
c. Leaking hydraulic fluid f. Modified or altered equipment
Troubleshooting Guide
Repair procedures must be performed in a dirt-free environment by qualified personnel who are familiar with
this equipment.
Trouble Cause Solution
Air Stage - Air leak causes 1. Air valve is dirty
1. Follow instructions to
mechanical lock to engage or clean air valve.
erratic cylinder action
Air Stage - Cylinder does not 1. Mechanical lock is engaged 1. Attach air hose and
lower when DOWN pedal is press UP pedal until
pressed cylinder is at full line
pressure. Press DOWN
pedal and mechanical
lock should release.
Hydraulic Stage - Cylinder does 1. Jack is out of prime 1. Follow instructions
not raise on bleeding air from the
hydraulic system.
Hydraulic Stage - Cylinder lifts 1. Release valve is not sealing 1. Clean or reseat
load, but doesn’t hold release valve ball.
2. System oil is dirty 2. Replace hydraulic oil.
Hydraulic Stage - Cylinder does 1. Low oil level 1. Check oil level.
not raise to full height Follow instructions
on adding oil.
Parts List & Operating Instructions
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