Denison Hydraulics Goldcup Series

Other manuals for Denison Hydraulics Goldcup Series

Installation & Overhaul Instructions24 pages

Questions and Answers

D
Debbie LambertAug 8, 2025
How to troubleshoot pressure shocks in a Denison Hydraulics Goldcup Water Pump?
- A
  Angela WhiteAug 8, 2025
  Pressure shocks in your Denison Hydraulics Water Pump can arise from: * **Cogging load:** Address mechanical considerations. * **Worn relief valve:** Needed repairs. * **Worn compensator:** Needed repairs. * **Slow response in check valves:** Replace or relocate the valves. * **Low servo pressure:** Increase pressure and check pressure drop through the servo filter. * **Excessive decompression energy rates:** Improve decompression control. * **Excessive line capacitance:** Reduce line size or lengths; eliminate hose. * **Barrel blow-off:** Re-check pump hold-down, rotating group, and drain pressure.
M
Michael BrooksAug 28, 2025
Why is there erosion on the barrel ports and port plate of my Denison Hydraulics Goldcup?
- M
  Margaret RamosAug 29, 2025
  Erosion on barrel ports and the port plate of your Denison Hydraulics Water Pump is caused by air in the fluid, leading to cavitation.
G
gonzalesseanNov 2, 2025
Why is the fluid heating up in my Denison Hydraulics Goldcup Water Pump?
- W
  wwatsonNov 2, 2025
  Fluid heating in your Denison Hydraulics Water Pump may be due to: * **Excessive pump or motor leakage:** Recheck case drain flow and repair as required. * **Fluid too thin:** Could be caused by improper assembly or port timing. * **Relief valve issues:** The valve might be set too low compared to the load or compensator, or instability caused by back pressure or worn parts. * **Compensator issues:** The compensator might be set too high compared to the relief valve or have worn parts. * **Oversized pump:** The pump might be too large for the fluid needs; select a smaller pump displacement. * **Heat exchanger problems:** Water might be turned off or have too little flow, the water might be too hot, the fan could be clogged or restricted, efficiency reduced by mud or scale depo...
R
robert00Nov 12, 2025
Why is my Denison Hydraulics Goldcup Water Pump so noisy?
- S
  Shane ClaytonNov 12, 2025
  If your Denison Hydraulics Water Pump is noisy, it could be due to several reasons: * Air in the fluid: This can be caused by a leak in the suction line, low fluid level, turbulent fluid return lines above the fluid level, gas leak from accumulator, excessive pressure drop in the inlet line from a pressurized reservoir or a suction line strainer acting as an air trap. * Cavitation in the pump or motor rotating group: This might be due to fluid that is too cold, too viscous, or too heavy; shaft speed that is too high; a suction line that is too small or collapsed; a suction strainer that is too small, too fine, or too dirty; high operating altitude; boost or replenishment pressure that is too low; or replenishment flow that is too small for dynamic conditions. * Misaligned shaft: Thi...
A
adamschristopherNov 17, 2025
What causes high wear in my Denison Hydraulics Goldcup & Motor?
- J
  Jon PooleNov 18, 2025
  High wear in your Denison Hydraulics Water Pump & Motor can stem from several factors: * Excessive loads or contaminant particles in the fluid: Reduce pressure settings and speed. Ensure proper filter maintenance, avoid filters that are too coarse, prevent the introduction of dirty fluid to the system, maintain proper reservoir openings and breather, and ensure proper line replacement. * Improper fluid: The fluid might be too thin or thick for the operating temperatures, experiencing breakdown with time, temperature, or shearing effects, containing incorrect additives in new fluid, or suffering destruction of additive effectiveness with chemical aging. * Improper repair: This involves the use of incorrect parts, procedures, dimensions, or finishes. * Unwanted water in fluid: Check...
A
Adam CarrollNov 23, 2025
What causes pressure shocks in a Denison Hydraulics Goldcup Water Pump?
- P
  peggy61Nov 23, 2025
  Pressure shocks in your Denison Hydraulics Water Pump can arise from: * Cogging load: Consider mechanical aspects. * Worn components: This includes worn relief valves and compensators, which require repairs. * Check valve issues: Slow response in check valves necessitates replacement or relocation. * Servo pressure: Servo pressure being too low to maintain firm control requires increased pressure and a check of the pressure drop through the servo filter. * Excessive energy or capacitance: Excessive decompression energy rates require improved decompression control, and excessive line capacitance (line volume, line stretch, accumulator effects) requires reduced line size or lengths, or elimination of hose. * Barrel blow-off: Re-check pump hold-down, rotating group, and drain pre...

Summary

INSTALLATION

INTRODUCTION

Provides an overview of the pump's design concepts and manual usage.

DESCRIPTION

Details pump design concepts, control vane actuator, and standard controls.

MOUNTING

Covers pump mounting, alignment, and concentricity requirements.

REAR PUMP MOUNTING

Explains shaft seal isolation and axial load considerations for rear mounting.

SHAFT INFORMATION

Details shaft alignment, offset limits, and lubrication for splined/keyed shafts.

PIPING

Covers case pressure limits, drain line sizing, and fluid line recommendations.

RECOMMENDED FLUIDS

Specifies petroleum-based fluids and anti-wear additive fluids.

VISCOSITY

Defines viscosity requirements based on operating conditions.

VISCOSITY INDEX

Explains V.I. impact on operating temperature and fluid life.

TEMPERATURE

Advises on fluid temperature limits to prevent seal degradation and hazards.

ALTERNATE FLUIDS

Lists permissible fire-resistant fluids like water-in-oil emulsions.

FLUID CLEANLINESS

Sets standards for fluid cleanliness (NAS 1638 class 8) and filtration.

COMPARISON OF SOLID CONTAMINATION CLASSIFICATION SYSTEM

Provides NAS 1638 and ISO 4406 contamination charts.

FILLING CASE

Details the importance of filling the pump case with fluid before operation.

SERVICE INFORMATION

General guidance on pump application and system maintenance.

MAINTENANCE

Emphasizes keeping the system clean and avoiding operation outside limits.

START UP PROCEDURES FOR NEW INSTALLATIONS

Step-by-step guide for priming and initial operation of the pump.

UNIT DISASSEMBLY

INTRODUCTION

States the purpose of the disassembly section and cautions for specific units.

DISASSEMBLY

General instruction to disassemble only as necessary for repair.

VALVE BLOCK

Step-by-step instructions for disassembling the valve block.

CONTROL COVERS

Procedures for removing control covers and associated components.

SERVO;REPLENISH PUMP AND BARREL HOLDDOWN

Details disassembly of the servo/replenish pump and barrel holddown.

PORT BLOCK

Instructions for removing the port block and its components.

DRIVE SHAFT

Steps for removing the drive shaft and bearing assembly.

ROCKER CAM AND CONTROL STROKING ASSEMBLY

Procedures for disassembling the rocker cam and stroking assembly.

REWORK LIMITS OF WEAR PARTS

Specifies allowable wear limits for critical pump components.

ASSEMBLY PROCEDURE

CLEANING AND INSPECTION

Emphasizes inspection and cleaning of parts before assembly.

DRIVE SHAFT AND BEARING ASSEMBLY

Guides the installation of the drive shaft and bearing.

ROCKER CAM, PISTONS-SHOES & RETAINER

Details assembly of the rocker cam, pistons, shoes, and retainer.

CAM-CRADLE ASSEMBLIES

Instructions for assembling cam-cradle components.

PISTON AND SHOE ASSEMBLY

Covers the installation of pistons and shoes into the retainer.

MOUNTING FLANGE, CAM & CRADLE, BARREL & AUXILIARY SHAFT ASSEMBLY

Steps for assembling the mounting flange, cam, cradle, barrel, and shaft.

BARREL AND AUXILIARY DRIVE SHAFT 24 SERIES

Procedure for assembling the barrel and auxiliary drive shaft for 24 series.

BARREL AND AUXILIARY DRIVE SHAFT 30 SERIES

Procedure for assembling the barrel and auxiliary drive shaft for 30 series.

HOUSING ASSEMBLY

Instructions for assembling the pump housing.

HOUSING, END CAP, CAM AND BARREL ASSEMBLY

Steps for assembling the housing, end cap, cam, and barrel.

MECHANICAL SHAFT SEAL ASSEMBLY PROCEDURE

Detailed steps for installing the mechanical shaft seal.

SEAL ASSEMBLY

Procedures for replacing and assembling the shaft seal.

OPTIONAL CONTROLS

Information on installing optional control systems.

COUNTERBALANCE PLATE ASSEMBLY

Steps for assembling the counterbalance plate.

SERVO PLATE ASSEMBLY

Instructions for installing the servo plate.

CONTROL COVER ASSEMBLY

Procedures for installing the control covers.

PORT BLOCK ASSEMBLY

Steps for assembling the port block.

PORT BLOCK INSTALLATION

Guides the installation of the port block onto the pump housing.

BARREL HOLDDOWN AND AUXILIARY PUMP 30 SERIES

Assembly steps for the barrel holddown and auxiliary pump for 30 series.

AUXILIARY PUMP

Instructions for installing the auxiliary pump.

END COVER

Steps for installing the end cover and associated components.

REAR DRIVE ADAPTER

Procedure for installing the rear drive adapter.

PILOT VALVE ASSEMBLY

Steps for assembling the pilot valve.

SHUTTLE VALVE ASSEMBLY

Instructions for assembling the shuttle valve.

SHUTTLE VALVE ADAPTER

Procedure for installing the shuttle valve adapter.

SHUTTLE VALVE MOUNTING

Steps for mounting the shuttle valve.

VALVE BLOCK ASSEMBLY Figure 12

Detailed assembly instructions for the valve block.

VALVE BLOCK ASSEMBLY FOR SERVO VALVE MOUNTING Figure 13

Assembly steps for the valve block with servo valve mounting.

TEST PROCEDURE

GENERAL REQUIREMENTS

Specifies general requirements for pump testing.

BASIC PUMP TEST

Outlines the standard procedure for testing pump performance.

ALTERNATE TEST PROCEDURE

Provides an alternative test procedure if a standard test stand is unavailable.

CONTROL TEST

Specific test procedures for pump control systems.

FLUID CONNECTION

NOMENCLATURE

Lists and defines the components of fluid connections.

FLUID CONNECTIONS

Details port identification, sizing, and connection types.

CIRCUITS

INSTALLATION DRAWING

PARTIAL VIEW B-B

Provides dimensional details of the pump's B-B view.

PARTIAL VIEW A-A

Provides dimensional details of the pump's A-A view.

-A- CONTROL MTG. POSITION

Details control mounting positions for the 'A' configuration.

-B- CONTROL MTG. POSITION

Details control mounting positions for the 'B' configuration.

ORDERING CODE

AVAILABLE CONTROL COMBINATIONS

CONVERSIONS & FORMULAS

DEFINITION & UNIT

Provides definitions for technical terms and unit conversions.

FLUID POWER FORMULAS

Lists formulas for calculating pump and motor performance.