Genuine Titan OEM | Diaphragm Pump Assembly Parts
Shop Titan ED655 Plus Diaphragm Pump Parts
Restore dependable hydraulic pumping and pressure regulation with genuine Titan ED655 Plus Diaphragm Pump Parts from AllTitanParts. Browse OEM diaphragm assemblies, hydraulic pistons, pressure control valves, regulating springs, seals, bearings and motor components associated with Diaphragm Pump Assembly P/N 0555124. Use the illustrated parts diagram to identify the correct replacement and maintain your Titan ED655 Plus Airless Pump.
Diaphragm Pump Assembly Overview
Buy Genuine Titan ED655 Plus Diaphragm Pump Replacement Parts
The Titan ED655 Plus Diaphragm Pump (P/N 0555124) is a major component of the ED655 Plus airless spraying system. Its motor-driven hydraulic mechanism actuates a flexible diaphragm that helps move coating material through the pump's fluid system.
Proper operation depends on several interconnected components, including the diaphragm assembly, hydraulic piston, pressure regulating spring, valve needle, eccentric bearing assembly, hydraulic housing and sealing hardware. Wear or damage in these components can contribute to unstable pressure, reduced pumping performance, hydraulic leakage or mechanical problems.
AllTitanParts provides individual replacement components associated with this assembly, including the 0278240 Diaphragm Assembly, 0278339 Hydraulic Piston, 0270529 Stem Valve, 0089475 Pressure Valve Needle and 0090031 Eccentric Sleeve and Bearing Assembly. Match the OEM part number to the applicable factory diagram before ordering.
OEM Parts Directory
Titan ED655 Plus Diaphragm Pump Assembly Parts List
The following 25 components are associated with the ED655 Plus Diaphragm Pump Assembly P/N 0555124. The assembly number identifies the diagram grouping, while each individual replacement component has its own Titan OEM part number.
| Diagram Ref. | Titan OEM Part Number | Part Description | Repair Function |
|---|---|---|---|
| 2 | 0270494 | Diaphragm Ring | Supports diaphragm retention and positioning. |
| 3 | 0278240 | Diaphragm Assembly | Provides the flexible pumping element. |
| 4 | 0288775 | Pressure Control Knob | Provides the pressure adjustment interface. |
| 5 | 9801109 | Set Screw #10-24 x .50 | Secures its designated component. |
| 6 | 0270529 | Stem Valve | Forms part of the pressure regulating mechanism. |
| 7 | 0047373 | Pressure Regulating Spring | Supports pressure valve operation. |
| 8 | 0089518 | O-Ring | Seals its designated assembly location. |
| 9 | 0089475 | Pressure Valve Needle | Supports precise pressure regulation. |
| 10 | 0278339 | Hydraulic Piston | Produces hydraulic actuation. |
| 11 | 0005311 | Piston Spring | Supports piston return movement. |
| 12 | 0270548 | Piston Washer | Supports the piston assembly. |
| 13 | 0089456 | Retainer | Retains its designated internal component. |
| 14 | 0278359 | Gasket | Provides sealing between mating surfaces. |
| 15 | 0278341 | Hydraulic Cover | Covers part of the hydraulic mechanism. |
| 16 | 9800049 | Screw | Secures assembly components. |
| 17 | 0047393 | Retaining Ring | Retains the specified drive component. |
| 18 | 0090031 | Eccentric Sleeve and Bearing Assembly | Supports conversion of rotary motion to reciprocating movement. |
| 19 | 0089829 | Shaft Key | Supports torque transmission at the shaft connection. |
| 20 | 9900355 | Socket Head Cap Screw M8x45 | Secures designated components. |
| 21 | 9921601 | Lock Washer | Supports fastener retention. |
| 22 | 0270546A | Motor | Supplies mechanical drive power. |
| 23 | 0089930 | Seal | Provides sealing at its designated location. |
| 26 | 0278237 | Hydraulic Housing Assembly | Supports and encloses hydraulic components. |
| 27 | 0270462 | Fan, Emerson, 1/3 HP Motor | Provides motor cooling airflow. |
| 28 | 0270612 | Fan Cover | Protects the motor cooling fan. |
The diagram reference numbers are not consecutive. Confirm each part number and equipment configuration against the applicable Titan documentation before purchase.
Featured OEM Pump Components
Shop Titan ED655 Plus Diaphragms, Hydraulic Pistons, Pressure Valves and Bearings
Titan 0278240 Diaphragm Assembly
The Titan 0278240 Diaphragm Assembly is the flexible pumping element of the ED655 Plus. Hydraulic movement actuates the diaphragm, allowing the pump to move coating material through its fluid system.
Inspect the diaphragm when investigating internal leakage, reduced pumping performance or suspected diaphragm damage. Follow Titan's service instructions when replacing it.
OEM Part Number: 0278240Titan 0270494 Diaphragm Ring
The Titan 0270494 Diaphragm Ring helps retain and position the diaphragm within the pump assembly. Correct seating and component condition are important for maintaining the intended assembly arrangement.
Inspect the ring for damage or distortion when servicing the diaphragm assembly.
OEM Part Number: 0270494Titan 0278339 Hydraulic Piston
The Titan 0278339 Hydraulic Piston helps convert mechanical drive movement into hydraulic action that operates the diaphragm. Proper piston condition supports efficient movement within the hydraulic system.
A qualified technician should inspect the piston and related components if internal wear, scoring or hydraulic performance problems are suspected.
OEM Part Number: 0278339Titan 0270529 Stem Valve
The Titan 0270529 Stem Valve is part of the diaphragm pump's pressure regulating mechanism. Its condition can influence the system's ability to respond correctly to pressure adjustment.
Inspect the valve as part of a complete pressure regulation diagnosis rather than assuming it is responsible for every pressure problem.
OEM Part Number: 0270529Titan 0089475 Pressure Valve Needle
The Titan 0089475 Pressure Valve Needle works within the pressure regulation mechanism. Its seating surfaces and physical condition are important to the correct operation of the regulating valve.
Check this component when troubleshooting pressure instability or a malfunctioning pressure regulator.
OEM Part Number: 0089475Titan 0047373 Pressure Regulating Spring
The Titan 0047373 Pressure Regulating Spring supports the operation of the pressure regulating valve. A damaged or weakened spring may interfere with proper pressure response.
Inspect the spring together with the valve stem, needle and pressure adjustment mechanism during authorized service.
OEM Part Number: 0047373Titan 0090031 Eccentric Sleeve and Bearing Assembly
The Titan 0090031 Eccentric Sleeve and Bearing Assembly is part of the mechanical drive system. It helps convert motor rotation into the reciprocating movement required by the hydraulic piston.
Inspect the assembly if a qualified technician identifies abnormal bearing noise, excessive play or drive mechanism wear.
OEM Part Number: 0090031Titan 0278237 Hydraulic Housing Assembly
The Titan 0278237 Hydraulic Housing Assembly supports and encloses important internal hydraulic components. Its condition and mating surfaces are essential considerations during pump service.
Check for damage or sealing problems when investigating leaks or internal hydraulic system faults.
OEM Part Number: 0278237Hydraulic Pump Functions
How the ED655 Plus Diaphragm Pump Supports Airless Spraying
Motor-Driven Operation
The electric motor provides rotational power to the pump's mechanical drive components.
Hydraulic Actuation
The eccentric drive and hydraulic piston produce the movement needed to actuate the diaphragm.
Coating Displacement
Diaphragm movement changes the pumping chamber volume, helping move coating material through the fluid system.
Pressure Regulation
The pressure control knob, valve stem, needle and regulating spring work together within the pressure regulation system.
Troubleshooting and Repair
Common Titan ED655 Plus Diaphragm Pump Problems
Pump problems may originate in the diaphragm assembly, hydraulic system, pressure regulating components, motor or fluid-handling system. Use the applicable Titan service instructions to diagnose the cause before purchasing replacement parts.
| Observed Problem | Components to Inspect | Recommended Check |
|---|---|---|
| Pump fails to build pressure | 0278240, 0270529, 0089475 and pump head valves | Check the diaphragm, pressure regulation system and fluid valves using the manufacturer diagnostic procedure. |
| Unstable or fluctuating pressure | 0270529, 0047373, 0089475 and material supply | Inspect pressure valve components and confirm unrestricted coating supply. |
| Hydraulic fluid leakage | 0089518, 0278359, 0089930 and 0278237 | Identify the exact leak location and inspect seals, gaskets and mating surfaces. |
| Unusual mechanical noise | 0090031, 0089829 and motor drive components | Stop the equipment and arrange an inspection of the bearing and drive system. |
| Motor runs but coating output is weak | 0278240, 0278339, hydraulic system and pump head | Check material intake, pump head valves and hydraulic performance before replacing major parts. |
| Pressure adjustment is difficult | 0288775, 9801109 and pressure regulator components | Inspect the pressure control knob, securing screw and associated valve mechanism. |
OEM Part Identification
Titan 0555124 Assembly Number vs. Individual Replacement Part Numbers
The 0555124 number identifies the ED655 Plus Diaphragm Pump assembly section. Individual replacement parts use their own OEM numbers, such as 0278240 for the diaphragm assembly, 0278339 for the hydraulic piston and 0089475 for the pressure valve needle.
Do not treat the assembly identifier as an automatic substitute for an individual component number. Confirm the exact diagram callout and verify any manufacturer-documented supersession before ordering.
OEM Buying Guide
How to Choose the Correct Titan ED655 Plus Diaphragm Pump Part
Verify the Model
Confirm that your equipment is the Titan ED655 Plus and check the model and serial information.
Confirm the Assembly
Locate Diaphragm Pump Assembly P/N 0555124 in the applicable parts breakdown.
Match the OEM Part
Compare the diagram reference, OEM part number and description with the component being replaced.
Order the Replacement
Select the matching component and follow the manufacturer's repair and installation instructions.
Preventive Maintenance
Maintain Your Titan ED655 Plus Diaphragm Pump
Monitor Pressure Performance
Investigate unusual pressure fluctuations and difficulty maintaining spray pressure before they develop into larger operating problems.
Inspect Hydraulic Seals
During authorized service, examine the 0089518 O-Ring, 0278359 Gasket and 0089930 Seal for damage or deterioration.
Maintain the Hydraulic System
Follow Titan's instructions for hydraulic fluid specifications, service intervals and approved maintenance procedures.
Check Drive Components
Investigate abnormal bearing noise or vibration and inspect the eccentric drive system when recommended by a qualified technician.
Related Titan ED655 Plus Assemblies
Shop More Titan ED655 Plus Airless Pump Parts
ED655 Plus Main Assembly
Explore main assembly components and related sprayer hardware.
ED655 Plus Pump Head Assembly
Browse pump head components and coating-material flow parts.
ED655 Plus Hopper Assembly
Find hopper and material supply components for applicable equipment configurations.
Titan ED655 Plus Airless Pump Parts
Return to the ED655 Plus model directory to browse additional assembly categories.
Titan ED655 Plus Diaphragm Pump Service Safety
Before servicing the diaphragm pump, turn off the sprayer, disconnect electrical power and follow Titan's complete pressure-relief procedure. Never loosen a pressurized fitting or attempt to stop a high-pressure leak with your hand. High-pressure fluid injection injuries require immediate emergency medical attention. Hydraulic pump disassembly and internal pressure adjustments should be performed by qualified personnel following the applicable Titan service manual.
Genuine Titan ED655 Plus Diaphragm Pump Parts
Order Titan ED655 Plus Diaphragm Pump Parts Today
Shop genuine Titan diaphragm assemblies, hydraulic pistons, pressure regulating valves, bearings, gaskets and seals for ED655 Plus Diaphragm Pump Assembly P/N 0555124.
Shop ED655 Plus Diaphragm Pump PartsFrequently Asked Questions
Titan ED655 Plus Diaphragm Pump Assembly FAQ
What is the Titan ED655 Plus Diaphragm Pump assembly part number?
The diaphragm pump assembly section is identified as Titan P/N 0555124. Individual components have separate OEM part numbers.
What parts are listed for the ED655 Plus Diaphragm Pump?
The parts directory includes diaphragm components, a hydraulic piston, pressure regulating parts, seals, springs, an eccentric bearing assembly, a hydraulic housing, motor components and supporting hardware.
What is the Titan ED655 Plus Diaphragm Assembly part number?
Titan 0278240 is the Diaphragm Assembly listed for this pump.
What hydraulic piston fits the ED655 Plus Diaphragm Pump?
Titan 0278339 is the Hydraulic Piston identified in the ED655 Plus diaphragm pump parts directory.
What is the Titan ED655 Plus pressure valve needle part number?
Titan 0089475 is the Pressure Valve Needle listed for the assembly.
Which pressure regulating spring is listed for the ED655 Plus?
Titan 0047373 is the Pressure Regulating Spring listed in this diaphragm pump assembly.
What is the ED655 Plus eccentric bearing assembly part number?
Titan 0090031 is the Eccentric Sleeve and Bearing Assembly identified in the parts directory.
Why is my Titan ED655 Plus not building pressure?
Possible causes include diaphragm damage, pressure regulating valve problems, hydraulic system faults, pump head valve wear or restricted material supply. Follow the Titan troubleshooting procedure to identify the cause.
Can a damaged diaphragm cause reduced spraying performance?
Yes. A worn or damaged diaphragm can interfere with pumping performance. However, reduced output can also result from other hydraulic or fluid-system problems.
Can I replace ED655 Plus diaphragm pump seals separately?
The parts directory identifies individual sealing components, including Titan 0089518 O-Ring, 0278359 Gasket and 0089930 Seal. Confirm the correct part and diagram location before ordering.
Are Titan ED655 and ED655 Plus diaphragm pump parts interchangeable?
Interchangeability should not be assumed. Confirm the exact sprayer model, serial number, OEM part number and applicable manufacturer parts documentation.
Where can I buy Titan ED655 Plus Diaphragm Pump replacement parts?
Shop Titan ED655 Plus Diaphragm Pump Parts at AllTitanParts. For part identification assistance, call 713-931-0006.
Titan OEM Parts Assistance
Need Help Finding ED655 Plus Diaphragm Pump Parts?
Have your Titan ED655 Plus model, assembly number 0555124 and factory diagram reference ready when requesting assistance with part identification or compatibility.
713-931-0006