Advance Lifts Dock Lifts 10451055 Manual

 
 
SECTION 7.  POWER UNIT ASSEMBLIES 
 
This section contains drawings and photos of completed power units to aid service 
personnel in identifying each component.  Please be careful to match the correct 
voltage and horsepower as well as model number, when you are trying to identify the 
power unit for your lift.  Advance Lifts uses several different brand name motors and 
pumps, so the ones shown in the pictures may not be the same exact brands as on your 
unit.  More information about individual...

 
SECTION 8.  HYDRAULIC DETAILS 
  
1. General Hydraulic Information:  
A.  All hydraulic cylinders will require the replacement of packing’s and seals after a 
period of time, depending on usage and environmental conditions.  It is normal 
maintenance just like changing oil in an automotive engine.  However, 
maintenance personnel should recognize the difference between leakage and 
weepage: 
B.  Weepage is the normal accumulation of fluid that passes the seals in the course 
of operations, as the...

 
 
Oil Recommendations & Seal Compatibility 
 
Fluids: 
 
The current standard hydraulic fluid an ISO 46, (group II base) hydraulic fluid. This is 
the fluid normally supplied by the factory and is suitable for a temperature range of –10 
to +100 degrees Fahrenheit. When replacing or adding fluid to an Advance Lift, use only 
ISO 46 hydraulic fluid that is manufactured with a group II base oil. ISO 46 hydraulic 
fluid can be identified by its purple color. 
 
Seals: 
 
Generally, the seals in the unit...

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
P 8-4 
MOTOR 
HYDRAULIC DIAGRAM FOR UNITS WITH INTERNALLY VALVED PUMPS  
 
 
 
RESERVOIR 
PRESSURE RELIEF 
VALVE. FACTORY 
SET, DO NOT 
ADJUST 
SUCTION LINE 
FILTER IN 
RESERVOIR 
CHECK 
VALVE 
INTERNAL 
FILTER 
PRESSURE 
COMPENSATED 
FLOW CONTROL 
VALVE  DOWN 
SOLENOID 
½’’ SAE 100R2 
HYDRAULIC HOSE WITH 
½” FEMALE JIC FITTINGS 
(SUPPLIED BY OTHERS) 
½” MALE JIC FITTINGS 
SUPPLIED BY ADVANCE 
AT PUMP AND FILTER...

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
P 8-5 
 
 
MOTOR PRESSURE RELIEF VALVE 
(PRESET BY FACTORY, 
DO NOT ADJUST) MANIFOLD 
ASSEMBLY 
RESERVOIR  SUCTION FILTER 
IN RESERVOIR PUMP 
DOWN 
SOLENOID CHECK 
VALVE 
FLOW 
CONTROL 
MANUAL DOWN 
VALVE 
(OPTIONAL) CYLINDERS 
HYDRAULIC DIAGRAM FOR MODEL 1055 (115V 1Ø ONLY) 
FLOW CONTROLS 
HYDRAULIC DIAGRAM FOR UNITS WITH ONE-PIECE MANIFOLDS  
1/8” RETURN LINE 
TO RESERVOIR  

 
 
 
Model 1055 (115V 1Ø ONLY)  
Standard Valve Manifold (Typical) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Reference Page 8-10 for Valve Cartridge Details 
 
NOTE:  Valve numbers coincide with numbers shown in the hydraulic diagram on 
Page 8-4.
 
 
 
 
Part Number Reference 
 
Description                  Part Number 
 
1. Check Valve            001-262 
2. Pressure Relief Valve       001-263 
3. Down Flow Control Valve        001-293 
               4. Down Solenoid Valve         001-279 
 
 
 
 
P 8-6 
 
2....

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
P 8-7  

 
 
Repair Procedures for 1045 & 1055 Cylinders 
 
 
 Tools & Supplies Required: 
 
(2) Small screwdrivers to remove retaining rings and rod wipers. 
(1) snap ring tool (Waldes Truarc external type #S-660 or Industrial pliers  
   #P-104.) 
A (5) gallon bucket to collect fluid from the cylinders. 
Wrenches to disconnect hydraulic fittings. 
Cylinder hone (Craftsman glaze breaker #9K4633 or equivalent). 
Emery cloth 
Clean lint free cloths and hose caps. 
Clean work surface (butcher paper on top of most...

 
 
 
 
Repacking and Inspection: 
 
1.  Carefully inspect the entire housing with a flashlight, looking for any evidence of rust, 
scratches, or surface blemishes.  Small blemishes may be removed with fine emery 
cloth and larger faults will require the use of the hone listed above.  Be sure to 
thoroughly clean the housing when you are done to avoid contamination. 
2.  Do not become the victim of a false economy by using only part of a repacking kit.  
Since you have invested in disassembling the...

 
 
 
Reinstallation:  
1.  Remount the cylinders in the lift.  
2.  On units made after 4/1/00 reinstall the “Hexagonal” flow controls in the cylinder-
housing nipple, care must be taken to insure the flow controls are installed with the 
flat side visible and the grooved side down as illustrated below. 
3.  Reattach the hoses with special care to avoid contamination. 
4.  Clean up any spilled oil to insure that it is not later misinterpreted as a new oil leak. 
5.  Connect the electrical power and...