Central Hydraulics 94682 User manual

HYDRAULIC WHEEL DOLLY
SET OF TWO
Assembly and Operating Instructions
Model 94682
Copyright©2006 by Harbor Freight Tools®. All rights reserved. No portion of this manual
or any artwork contained herein may be reproduced in any shape or form without the express
written consent of Harbor Freight Tools.
For technical questions and replacement parts, please call 1-800-444-3353.
3491 Mission Oaks Blvd., Camarillo, CA 93011
Visit our Web site at http://www.harborfreight.com
®
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SPECIFICATIONS
Capacity Of Each Hydraulic
Wheel Dolly
1,500 lb. Weight Capacity Per Dolly, Each Dolly Fits Tires
Up to 10” Wide
Construction All Steel Construction, Aluminum Rollers, Rubber O-rings
Castor Dimensions 4” Diameter x 1-3/8” Wide x 4-3/4” Total Height
Roller Dimensions 10-5/8” Long x 2-3/4” Diameter x 4-3/8” Total Height
Distance Between Rollers 9-7/8’” Minimum to 20-3/4” Maximum
Roller Locking Width 10”
Ram Travel 10-7/8”
Ram Diameter 15/16”
Weight Per Wheel Dolly 40.7 lb.
SAVE THIS INSTRUCTION MANUAL
You will need this instruction manual for the safety warnings and precautions, inspection, maintenance,
and cleaning procedures. Keep your invoice with this instruction manual. Write the invoice number
on the front page. Keep this instruction manual and invoice in a safe and dry location for future refer-
ence.
UNPACKING
When unpacking, check to make sure the parts shown on this instruction manual are included. If any
parts are missing or broken, please call Harbor Freight Tools at the telephone number shown on the
front page of this manual.
GENERAL SAFETY WARNINGS AND PRECAUTIONS
1. KEEP WORK AREA CLEAN AND DRY. Cluttered, damp or wet work areas invite injuries.
2. USE EYE PROTECTION. Wear ANSI approved safety impact eye glasses when using this
product. ANSI approved safety impact eye glasses are available from Harbor Freight Tools.
3. DO NOT ALLOW CHILDREN IN THE WORK AREA. Keep away from children. Do not allow
children to play with this product.
4. CHECK FOR DAMAGED PARTS. Before using this product, carefully check that it will operate
properly and perform its intended function. Check for damaged parts and any other condi-
tions that may affect the operation of this product. Replace or repair damaged or worn parts
immediately.
5. REPLACEMENT PARTS AND ACCESSORIES. When servicing, use only identical replace-
ment parts.
6. MAINTAIN THIS PRODUCT WITH CARE. Keep this product clean and dry for better perfor-
mance.
7. USE THE RIGHT PRODUCT FOR THE RIGHT JOB. There are certain applications for which
this product was designed. Do not use small equipment, tools or attachments to do the work
of larger industrial equipment, tools or attachments. Do not use this product for a purpose for
which it was not intended.
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Page 3SKU 94682 For technical questions, please call 1-800-444-3353.
APPLICATION
ASSEMBLY
Use four of the Wheel Dollies to efficiently maneuver a parked vehicle in tight spaces. Designed to
fit most cars and lightweight trucks. A vehicle resting on four of the Vehicle Dollies can be pushed
forward, backward and even sideways.
There are two Rod Assemblies (3) for each Wheel Dolly. One needs to be attached to the
Outer Body & Axle Assembly (13), the other one should be attached to the Inner Body & Axle
Assembly (8).
Insert the Roller Raceway (5) into the Roller (6), then press the Rod Assembly (3) into the
Outer Body Assembly (13). Use the Washer (10), the Lock Washer (11) and secure it in place
using a wrench. Attach the other Rod Assembly (3) to the Inner Body & Axle Assembly using
the same hardware and process.
NOTE: Turn to the Parts list and Assembly diagram on page 7 for help identifying the parts
mentioned below.
1.
2.
WARNING: Make sure all the hardware is tight before you use the Wheel Dolly. Also test
each Wheel Dolly before using it.
8. Vehicle’s engine must be turned off and parking brake must be set before jacking up the
vehicle. Keep spectators clear of the area. Never allow people in the vehicle while vehicle is
being lifted or moved.
9. Never work underneath the vehicle while vehicle is resting on Wheel Dollies.
WARNING: The warnings, cautions, and instructions discussed in this instruction manual can-
not cover all possible conditions and situations that may occur. It must be understood by the
operator that common sense and caution are factors which cannot be built into this product,
but must be supplied by the operator.
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OPERATION
Figure 3
Figure 2
Tire (not included)
First expand the space between the Rollers (6). Turn the Release Valve (26)
counterclockwise and spread the Rollers (6) apart from each other (see Figure 2). After
Pulling the Rollers (6) apart, turn the Release Valve (26) all the way clockwise. Next slide the
Wheel Dolly around the tire (as shown in Figure 1).
Figure 1
To raise the tire, put your foot on top of the Foot Pedal (17) and press it up and down. The
Rollers (6) will move together and lift the tire off the ground. After raising the tire, insert the
Lock Pin (12) in the hole in the Outer Body & Axle Assembly (13) (as shown in Figure 3).
Lock Pin (12)
1.
WARNING: Before operating the Wheel Dolly read the bleeding instructions on page 5.
WARNING: Check the oil level before operating the Wheel Dolly.
Figure 2
Release Valve
(26)
2.
NOTE: The Rollers (6) will not move together when you Press up and down on the Foot
Pedal (17) unless the Release Valve is turned completely clockwise (see Figure 2).
To lower the tire, turn the Release Valve (26) counter-counterclockwise. The weight of the
tire will spread the Roller (6) apart, allowing you to pull the Wheel Dolly away from the tire.
WARNING: Do not turn the Release Valve (26) completely clockwise; doing so will remove it
allowing oil to spill out.
3.
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INSPECTION, MAINTENANCE, AND CLEANING
1. Before each use, inspect the general condition of the Wheel Dolly. Check for cracking, bend-
ing, wheel damage, and any other condition that may affect safe operation. If a problem
occurs with the Dolly, immediately discontinue its use; never use a damaged Wheel Dolly.
2. To clean, wipe with a damp cloth. You may use a mild detergent.
BLEEDING INSTRUCTIONS
Turn the Release Valve (26) 1/2 revolution counterclockwise and spread the Rollers (6) apart
as far as they will go.
Remove the Oil Fill Plug (27)
Press up and down on the Foot Pedal (17) about ten times quickly. This will purge the air
from the hydraulic system.
Top off with quality hydraulic fluid if it is too low, and replace the Oil Fill Plug (27).
Release Valve (26)
Oil Fill Plug (27)
1.
2.
3
4.
PLEASE READ THE FOLLOWING CAREFULLY
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS DIAGRAM IN THIS MANUAL AS A REFERENCE
TOOL ONLY. NEITHER THE MANUFACTURER NOR DISTRIBUTOR MAKES ANY REPRESENTATION OR WARRANTY OF ANY
KIND TO THE BUYER THAT HE OR SHE IS QUALIFIED TO MAKE ANY REPAIRS TO THE PRODUCT OR THAT HE OR SHE IS
QUALIFIED TO REPLACE ANY PARTS OF THE PRODUCT. IN FACT, THE MANUFACTURER AND/OR DISTRIBUTOR EXPRESSLY
STATES THAT ALL REPAIRS AND PARTS REPLACEMENTS SHOULD BE UNDERTAKEN BY CERTIFIED AND LICENSED TECHNI-
CIANS AND NOT BY THE BUYER. THE BUYER ASSUMES ALL RISK AND LIABILITY ARISING OUT OF HIS OR HER REPAIRS
TO THE ORIGINAL PRODUCT OR REPLACEMENT PARTS THERETO, OR ARISING OUT OF HIS OR HER INSTALLATION OF
REPLACEMENT PARTS THERETO.
LOCKING DOWN THE FOOT PEDAL
Press the Foot pedal all the way down, then swing the Pedal Lock Assembly (14) up and into the
hole on the bottom of the foot pedal (see Figure 5).
Pedal Lock Assembly (14)
Figure 2
Figure 4
Figure 5
Pedal Lock
The hydraulic system can take in air; when this happens the Hydraulic Wheel Dolly will work
poorly or not at all. Follow the steps below to fix this problem.
(14)
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NOTE: Some parts are listed and shown for
illustration purposes only and are not available
individually as replacement parts.
PARTS LIST AND ASSEMBLY DIAGRAM
Part Description Qty
1 Lock Nut 4
2 Caster 4
3Rod Assembly 2
4 Bolt 6
5Roller Raceway (nylon) 4
6Roller (aluminum) 2
7 Screw 1
8Inner Body & Axle Assembly 1
9 Pin 1
10 Washer 2
11 Lock Washer 2
12 Lock Pin 1
13 Outer Body & Axle Assembly 1
14 Pedal Lock Assembly 1
15 Complete Hydraulic Jack 1
(includes parts 18-55)
16 Hex bolt 4
17 Foot Pedal 1
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20 17
20
20
19
47
46
45
44
39
43
42
41
40
19
29
35
34
33
18
19
27
32
31
30
39
23
28
21
22 23
38
37
24 26
36
HYDRAULIC JACK PARTS LIST AND ASSEMBLY DIAGRAM
25
23
48
49 50 5152
53
54
NOTE: Part numbers 25, 28, 33, 34, 36, 39, 45 and 52 are only available by ordering the Seal Kit
part # 55.
Part Description Qty
18 Connector 1
19 Pin 3
20 R-pin 3
21 Screw 1
22 Spring 1
23 Ball 1
24 Pump Body 3
25* O -ring 1
26 Release valve 1
27 Oil Plug 1
28* Nylon Ring 1
29 Pump Cylinder 1
30 Dust Cover 1
31 Spring 1
32 Spring Cover 1
33* O -ring 1
34* Nylon Ring 1
35 Piston 1
36* Seal Ring 1
Part Description Qty
37 Circlip 1
38 Bushing 1
39* Seal Ring 2
40 Cylinder 1
41 Ram 1
42 Circlip 1
43 Circlip 1
44 Bushing 1
45* Seal Ring 1
46 Screw 1
47 Connecting Base 1
48 Ball 1
49 Ball Cap 1
50 Spring 1
51 Screw 1
52* O-ring 1
53 Screw 1
54 Plastic Cap 1
55 Seal Kit (extra kit not included) 1
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