Denison Hydraulics Goldcup M11 Series Manuel utilisateur

DENISON HYDRAULICS

Axial Piston Motor

Variable Displacement

Installation and Overhaul Instructions

Goldcup Series M11

Goldcup Series M14

SVM-M11/M14-D

Revised 7/03

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TABLE OF CONTENTS

PAGE

Introduction----------------------------------------------------------------------------------------------------------------------------------- 3

Installation

Mounting--------------------------------------------------------------------------------------------------------------------------------------- 4

Piping------------------------------------------------------------------------------------------------------------------------------------------- 4

Fluid recommendation & maintenance------------------------------------------------------------------------------------------------- 4

Start-Up Procedures------------------------------------------------------------------------------------------------------------------------ 4

Table II: Troubleshooting------------------------------------------------------------------------------------------------------------------ 6

Rework limits--------------------------------------------------------------------------------------------------------------------------------- 7

Disassembly

Controls---------------------------------------------------------------------------------------------------------------------------------------- 8

Barrel holddown------------------------------------------------------------------------------------------------------------------------------ 8

Port block-------------------------------------------------------------------------------------------------------------------------------------- 8

Barrel and holddown shaft---------------------------------------------------------------------------------------------------------------- 8

Drive shaft------------------------------------------------------------------------------------------------------------------------------------- 8

Housing---------------------------------------------------------------------------------------------------------------------------------------- 8

Rocker cam and control stroking assembly------------------------------------------------------------------------------------------- 9

Assembly

Drive shaft assembly----------------------------------------------------------------------------------------------------------------------- 10

Rocker cam and stroking assembly---------------------------------------------------------------------------------------------------- 11

Vane seal cartridges------------------------------------------------------------------------------------------------------------------------ 11

Control chambers---------------------------------------------------------------------------------------------------------------------------- 11

Servo assembly------------------------------------------------------------------------------------------------------------------------------ 12

Piston and shoe assembly---------------------------------------------------------------------------------------------------------------- 12

Barrel and holddown shaft assembly--------------------------------------------------------------------------------------------------- 15

Barrel and stroking assembly to mounting flange----------------------------------------------------------------------------------- 16

Housing assembly--------------------------------------------------------------------------------------------------------------------------- 17

Housing assembly installation------------------------------------------------------------------------------------------------------------ 18

Port block installation----------------------------------------------------------------------------------------------------------------------- 19

Barrel holddown----------------------------------------------------------------------------------------------------------------------------- 19

Shaft assembly------------------------------------------------------------------------------------------------------------------------------- 22

Seal assembly-------------------------------------------------------------------------------------------------------------------------------- 22

Counterbalance servo stem assembly------------------------------------------------------------------------------------------------- 22

Control cover assemblies----------------------------------------------------------------------------------------------------------------- 23

Shuttle valve assembly-------------------------------------------------------------------------------------------------------------------- 25

Ordering code-------------------------------------------------------------------------------------------------------------------------------- 27-28

See catalog S1-2AM-7501-A for all available kits.

The product information, specifications, and descriptions contained in this publication have been compiled for the use and

convenience of our customers from information furnished by the manufacturer; and we can not, and do not, accept any responsibility

for the accuracy or correctness of any description, calculation, specification, or information contained herein. No such description,

calculation, specification, or information regarding the products being sold has been made part of the basis of the bargain, nor has

same created or amounted to an express warranty that the products would conform thereto. We are selling the goods and

merchandise illustrated and described on this publication on an “as is” basis, and disclaim any implied warranty,

including any warranty of merchantability or warranty of fitness for any particular purpose whatsoever, with respect to the

goods and merchandise sold. All manufacturer warranties shall be passed on to our customers, but we shall not be responsible

for special, indirect, incidental, or consequential damages resulting from the use of any of the products or information contained or

described on this publication. Further, we reserve the right to revise or otherwise make product improvements at any time without

notification.

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INTRODUCTION

GENERAL

The Denison Goldcup series 11 and 14 axial piston motors feature advanced design concepts which are

time proven and aid in providing smooth controlled power in a compact package. The instructions

contained in this manual cover installation, maintenance and repair of the Goldcup series motors. Before

proceeding with the disassembly or reassembly of any unit, study this manual to become familiar with the

basic fit and function of the internal parts. Refer to the troubleshooting chart when diagnosing any

malfunction. Disassemble only as far as necessary to replace or repair any worn parts.

DESCRIPTION

The Goldcup series axial piston motors feature the use of a rocker cam and cradle stroking control to vary

displacement. This allows a compact unit while retaining the flow capacity of a larger motor, as well as

reducing wear and speeding control response. A vane actuator with a rotary servo operates the stroking

control thus varying flow.

Table 1

TYPICAL CHARACTERISTICS

Specification Term Goldcup 11 Goldcup 14

Displacement at max. angle In. 3/rev 11 14

Pressure Ports A or B max. continuous PSI 5000 5000

Intermittent (not to exceed 6 sec/min) PSI 6000 6000

Mounting Standard SAE 4-Bolt

fluid connections, Ports A & B SAE-ESAE-E

4-Bolt Pad for 6000 PSI Split Flange SAE –1 1/2” SAE –1 1/2”

Speed, max. continuous @ full displ. RPM 2400 2400

Speed, max. continuous @ 50% displ. RPM 2800 2800

Flow, Theor. max @ 100 RPM GPM 4.75 6.06

Flow, Theor. max @ 2400 RPM GPM 114 145

Torque Theor. max. per 100 PSI IN# 175 222

Torque Theor. max. @ 5000 PSI IN# 8750 11,100

Torque Theor. max @ 6000 PSI IN# 10,500 13,300

Power Theor. max @ 5000 PSI per 100

RPM HP 13.8 17.6

Power Theor. max @ 5000 PSI per 2400

RPM HP 330 425

Efficiency Torque approx.—stalled % theor. 81 81

-- running 93 93

Pkg. motor variable displ. 2AO control lbs. 300 300

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INSTALLATION

MOUNTING

The mounting hub and four bolt mounting flange conform to SAE-E configuration. The motor must be

mounted on a base or bracket of sufficient strength to support the unit without flexing or movement. It is

recommended that a dial indicator be used when checking alignment. The concentricity of the pump

shaft and driven load shaft must not exceed .010” T.I.R. and ideally should be .006”-.008” T.I.R.

maximum. Shaft concentricity is particularly important if the motor is rigidly connected without a flexible

coupling or a coupling that allows only for minor misalignment.

PIPING

All fluid lines, whether pipe, tubing or flexible hose must be of adequate size and strength to assure free

flow to and from the motor. Do not use galvanized pipe, as the galvanized coating may flake off with

continued use. If rigid pipe or tubing is used, the workmanship must be accurate in order to eliminate

strain on the pump or fluid connections. Sharp bends, elbows or reducers should be eliminated wherever

possible. All system piping must be clean and free of foreign material. It is recommended that all piping

be cleaned with solvent before connecting it to the pump.

FLUID RECOMMENDATION AND MAINTENANCE

Satisfactory operation depends on many factors, the most important of which is the selection of the

proper hydraulic fluid and its subsequent maintenance. Select only high quality fluids which conform to

Denison HF-0 and HF-1 specifications. If in doubt concerning the correct fluid for use, contact a Denison

sales representative. Efficient filtration is essential and cannot be overemphasized. Fluid cleanliness

must conform to NAS class 8 or 9, 15 micron and under. Effective continuous use of 10 micron filters will

assure compliance to this standard. Operating temperature is determined by the viscosity characteristics

of the fluid selected. Because high operating temperatures degrade seals, reduce the service life of the

fluid and pose potential hazards, fluid temperatures should not exceed 180°F at the case drain.

START UP PROCEDURE AND INSTALLATION

1. Read and understand the equipment manual before installation of the Goldcup motor. Identify

system components (relief valves, solenoids, etc.) and their function is essential to satisfactory

operation.

2. Visually inspect system components. Their proper placement and function is essential to

satisfactory operation.

3. Check reservoir for cleanliness per instructions outlined under “Fluid Recommendation and

Maintenance”. Drain and/or filter system fluid as required.

4. Check fluid level and fill as required with properly filtered hydraulic fluid. It is important that all

components which may be in the system are in the correct position relative to fluid level. Fill

pump and motor cases as necessary.

5. Check alignment of drive. Alignment must conform to specifications under “Mounting”.

6. Check oil cooler/heat exchanger for proper operation. Maintain fluid temperature per

recommendations under “Fluid”. etc.

7. Reduce pressure settings of all relief valves and/or compensators. Provide for accurate pressure

readings at appropriate locations in the hydraulic circuit.

8. Check for proper pump and motor rotation.

9. Check actuation of solenoids if in system.

10. Check all fittings, hoses, etc. for serviceability and tightness.

11. Start pump drive at reduced speed if possible and make sure units fill properly.

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INSTALLATION (continued)

12. Cycle unloaded equipment at low speed and pressure. Observe for proper function of all

components.

13. Bleed system of any trapped air. Re-check fluid level and fill as necessary.

14. Gradually increase speed and pressure settings. Be alert for leaks, particularly in pump and

motor inlet lines, as these may cause cavitation and eventual pump failure.

15. Check for possible trouble indicated by changes in sounds, system shocks and air in fluid.

16. Equipment is now operational.

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TABLE II

TROUBLESHOOTING CHART

TROUBLE SHOOTING

Component problems and circuit problems are often inter-related. An improper circuit may operate with apparent success but will

cause failure of a particular component within it. The component failure is the effect, not the cause of the problem.

This general guide is offered to help in locating and eliminating the cause of problems by studying their effects.

EFFECT OF TROUBLE POSSIBLE CAUSE FAULT WHICH NEEDS REMEDY

Air in Fluid Leak in suction line

Leak at shaft seal

Low fluid level

Turbulent fluid

Return lines above fluid level

Gas leak from accumulator

Excessive pressure drop in the inlet line

from a pressurized reservoir

Suction line strainer acting as air trap

Cavitation in motor rotating group Fluid too cold

Fluid too viscous

Fluid too heavy

Shaft speed too high

Suction line too small

Suction line collapsed

Suction strainer too small

Suction strainer too dirty

Operating altitude too high

Boost or replenishment pressure too low

Replenishment flow too small for dynamic

conditions

Misaligned shaft Faulty installation

Distortion in mounting

Axial interference

Faulty coupling

Excessive overhung loads

Noisy Motor

Mechanical fault in pump Piston and shoe looseness or failure

Bearing failure

Incorrect port plate selection or index

Eroded or worn parts in the displacement

control

Air in fluid See aboveErosion on barrel ports and port plate Cavitation See above

Excessive loads Reduce pressure settings

Reduce speeds

Contaminant particles in fluid Improper filter maintenance

Filters too coarse

Introduction of dirty fluid to system

Reservoir openings

Reservoir breather

Improper line replacement

Improper fluid Fluid too thin or thick for operating

temperature range

Breakdown of fluid with

time/temperature/shearing effects

Incorrect additives in new fluid

Destruction of additive effectiveness with

chemical aging

Improper repair Incorrect parts

Incorrect procedures, dimensions,

finishes

High wear in motor

Unwanted water in fluid Condensation

Faulty breather, strainer

Heat exchanger leakage

Faulty clean-up practice

Water in make-up fluid

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TABLE II

TROUBLESHOOTING CHART (continued)

EFFECT OF TROUBLE POSSIBLE CAUSE FAULT WHICH NEEDS REMEDY

Cogging load

Worn relief valve Mechanical considerations

Needed repairs

Servo pressure too low to maintain firm

control Increase pressure and check pressure

drop through servo filter

Excessive line capacitance (line volume,

line stretch, accumulator effects) Reduce line size or lengths. Eliminate

hose.

Pressure shocks

Barrel blow-off Re-check pump hold-down, rotating

group, drain pressure

Excessive motor leakage Re-check case drain flow and repair as

required

Fluid too thin

Improper assembly, port timing

Relief valve Set too low (compared to load or to

compensator)

Instability caused by back pressure, worn

parts

Heat exchanger Water turned off or too little flow

Water too hot

Fan clogged or restricted

Efficiency reduced by mud or scale

deposits

Intermittent hydraulic fluid flow

Heating of fluid

Reservoir Too little fluid

Entrained air in fluid

Improper baffles

Insulating air blanket that prevents heat

rejection

Heat pick-up from adjacent equipment

REWORK LIMITS OF WEAR PARTS

11 and 14 in.3 Original

Dimension Max. Rework

From Original

Dimension

Min. Dimension

After Rework

Port plate face .725/.715” .010” .705”

Cylinder barrel face 5,880” .010” 5.870”

Shoe retainer face .438/.437” .005” .432”

Piston shoe face (pocket) .020” .010” .010”

Creep plate face .251/.250” .010” .240”

Face plateNone Replace

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UNIT DISASSEMBLY

The instructions contained in this section cover complete disassembly of the Denison Goldcup 11 and 14

motors. Disassemble only as far as necessary to replace or repair any worn parts. A clean bench or

similar surface capable of supporting unit should be used. After disassembly, internal parts should be

coated with a film of clean oil and protected from dirt and moisture. Excessive handling will cause parts

to rust and should be avoided.

CONTROLS (Figure 9)

1. Remove the four screws (15) from the side cover (17) and remove the input shear seal valve

assembly.

2. Remove the four screws (15) from the remaining side cover (16) and remove the counter balance

shear seal assembly.

3. Remove the two screws (13) and spacers (12). Remove the balance plate (11).

4. Remove the two screws (10) and balance stem (9).

BARREL HOLD-DOWN (Figure 8)

1. Remove retaining ring (3), end cover (5) and O-ring (4).

2. Remove cotter pin (6), hold-down nut (7), thrust washers (10), bearing (9) and seal ring (8).

PORT BLOCK (Figure 7)

1. Remove four screws (1) that secure the port block (2) to the housing (6).

2. Remove port block, gasket (5), port plate (4) and port plate pins (3).

CAUTION: The port plate may cling to the barrel face because of oil film. Do not allow the port plate to

fall and become damaged.

SHUTTLE VALVE (Figure 9)

1. Remove the screws (20) that secure the shuttle valve (18) to the port block.

2. Remove the shuttle valve and O-rings (19) from the port block. The valve is a complete assembly

and should not be disassembled.

BARREL AND HOLD-DOWN SHAFT (Figure 6)

1. Remove the face plate (2) and face plate pins (1) from face of the barrel assembly.

2. Remove barrel assembly by grasping hold-down shaft and lifting entire assembly from the

housing.

DRIVE SHAFT (Figure 9)

1. Remove four screws (8), gaskets (7), seal retainer (6), gasket (5), seal stop (4a), and stationary

part of shaft seal assembly (4). Refer to view of item 4.

2. Remove the carbon ring and the remainder of the shaft seal from the shaft.

3. Remove retaining ring (3), shaft and bearing assembly (1) and shim (2) if used.

HOUSING (Figure 6)

1. After removal of the shaft and bearing assembly, position the unit so that it rests on the mounting

flange.

2. Push the ends of pressure feed tubes away from the housing so as not to bend or damage them.

3. Lift the housing from the mounting flange. Remove the gasket and dowel pins. Mounting flange

must be driven off housing.

NOTE: Do not remove the roll pins or bearing from the housing unless bearing is damaged and

replacement is necessary.

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UNIT DISASSEMBLY (continued)

ROCKER CAM AND CONTROL STROKING ASSEMBLY (Figure 4)

1. Remove pressure feed tubes (5 and 6) from the cradle. DO NOT BEND THESE LINES.

2. Remove the assembly from the mounting flange and position on a clean surface with the override

tubes (2) in a horizontal position and located at the top.

3. Mark the cam (24) and cradle (20) as indicated in Figure 2. These marks will determine

positioning of parts during reassembly.

4. Position the assembly in an upright position on the flat surface of the cradle (see Figure 2).

5. Remove the retaining ring (1), thrust washer (2), flange bearing (3), piston and shoe assembly (4)

and creep plate (5) from the rocker cam (22).

6. Remove the two differential screws (9) from the rocker cam and remove the servo input parts (6,

7, 8 and 10).

CAUTION: Differential screws must be alternately removed one turn at a time.

7. Remove the four 1/2” screws (11) and four 3/8” screws (13) from the control chamber covers

(14R and 14L).

8. Remove the control chambers (16). Remove the seals (18), four steel balls (17) and dowel pins

(15).

9. Remove the vane seal cartridges (25), hold-down vanes (24) and springs (23) from the rocker

cam (22).

10. Remove the rocker cam from the cradle (19).

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ASSEMBLY PROCEDURES

DRIVE SHAFT ASSEMBLY

Figure 1

1. Pass one retaining ring (3) over the internal end of drive shaft (1) and install in the groove near the

shaft seal surface. DO NOT PASS THE RING OVER THE SEAL SURFACE.

2. Slide the bearing (2) over the same end of the shaft and seat against the ring. Support only the

inner race of the bearing and press on the coupling end of the shaft. DO NOT USE EXCESSIVE

FORCE AND DISTORT OR DAMAGE THE RETAINING RING.

3. Install the other retaining ring (3) in the remaining ring groove. Be sure that both rings are fully

seated.

PARTS LIST FOR FIGURE 1

S13-43968 #1 Drive Shaft Assembly (Splined)

S13-43969 #2 Drive Shaft Assembly (W/Keyway)

Qty.Item #1 #2 Part

Number Description

11-- 033-71604 #1 (Splined) Drive Shaft

-- 1033-71601 #2 (W/7/16/KW) Drive Shaft

211230-82148 Shaft bearing MRC 110 KS

322033-71641 Retaining Ring

4-- 1033-71514 Square Key 7/15 x 1-1/2

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