Pump Manual

ManualsBrandsSimpson ManualsOutdoors4200-PSI 4.0 GPM Gas Pressure Washer Trailer System with Electric Start

SERVICE MANUAL

67DX PLUNGER PUMP SERIES

PUMP MODEL

FLOW

GPM (L/M)

PRESSURE

PSI (BAR)

PUMP

RPM

MOTOR

RPM

TEMPERATURE

Far. (Cent)

SHAFT DIA.

INCH (MM)

OIL CAP

Oz. (l)

    —    

SERVICING THE 67DX SERIES PLUNGER PUMP

WARNING

Do not service pump or electrical equipment while energized.

Electricity can cause personal injury, death or property damage.

 

 

 

 



SERVICING THE VALVES

Disassembly

NOTE:

NOTE:



 

 

  

 

IMPORTANT SAFETY INSTRUCTIONS





General Safety Information and Symbols













WARNING

CAUTION

NOTICE

DANGER

Summary of content (8 pages)

PAGE 1
SERVICE MANUAL 67DX PLUNGER PUMP SERIES PUMP MODEL 67DX39G1I FLOW GPM (L/M) PRESSURE PSI (BAR) PUMP RPM MOTOR RPM TEMPERATURE Far. (Cent) SHAFT DIA. INCH (MM) OIL CAP Oz. (l) 3.9 (14.8) 4000 (275) 3450 — 140º (60º) 1.00 (25.4) 13 5 (0.04) IMPORTANT SAFETY INSTRUCTIONS It is the responsibility of the user to read and understand all instructions, important safeguards, and safety precautions before operating or servicing any pump.
PAGE 2
NOTICE Exercise caution as the reverse pliers may damage the threads in valve chamber or spring retainer. 4. 5. 6. 7. 8. Separate discharge valve assembly from inlet valve assembly. Remove o-ring and backup-ring from discharge seat. Using a small tipped screw driver, place end of screw driver through spring retainer and above the valve and pry upwards to separate spring retainer from valve seat. Remove o-ring from inlet seat. Repeat step 6 to disassemble inlet valve assembly.
PAGE 3
NOTICE Exercise caution as the pick may score o-ring sealing surface. 8. Remove V-Packing and male adapter from each seal chamber by using a screw driver. Reassembly 1. 2. 3. 4 5. 6. 7. 8. 9. 10. 11. 12. Examine the manifold chamber walls for scale buildup or damage and replace as needed. Examine V-Packings for frayed edges or uneven wear and replace as needed. Examine Lo-Pressure seals for wear to the internal ridges and outer surfaces or for broken springs and replace as needed. .
PAGE 4
7. 8. 9. 10. 11. Apply Loctite®242® to exposed threaded end of plunger retainer. Install ceramic plunger with plunger retainer, seal washer and barrier slinger over each plunger rod shoulder and thread hand tight. Torque to 55 in/lbs or 4.6 ft/lbs (6.2 Nm). Slide seal retainer over each ceramic plunger with the openings to the top and bottom, small tab down and larger face surface towards seal. Press into crankcase.
PAGE 5
NOTE: Examine and install the following components into the chemical injector. 17. Examine chemical injector for damaged threads and replace as needed. 18. Examine check valve spring, check valve and check valve seat for damage or wear and replace as needed. Examine o-rings for cuts or wear and replace as needed. 19. Install check valve spring into inlet port of chemical injector. 20. Install check valve with o-ring on spring in chemical injector with o-ring facing out away from spring. 21.
PAGE 6
B. ROTATING PARTS HAZARD Do not service pump while energized. Moving, rotating or reciprocating parts can crush and cut, causing personal injury, death or property damage. 1. Adhere to “Lock Out” and “Tag Out” procedures for electrical equipment. 2. Before commencing pump service, turn power supply off, turn water supply off, squeeze trigger on gun to relieve system pressure. 3. For mobile equipment, be sure engines and hydraulics are turned off and secured to avoid accidental start. 4.
PAGE 7
B. FROZEN LIQUID HAZARD Do not operate the pump with frozen liquid. Operating the pump under this condition could over pressurize and jettison the manifold from the crankcase causing personal injury and property damage. 1. Store pump or pumping system in an environmentally controlled room protected from freezing temperatures. 2. Follow procedures in TECH BULLETIN 083 to winterize pump. C. CLEANING PUMP HAZARD Do not use solvents that are flammable and toxic to clean or degrease equipment.
PAGE 8
DIAGNOSIS AND MAINTENANCE One of the most important steps in a high pressure system is to establish a regular maintenance program. This will vary slightly with each system and is determined by various elements such as the duty cycle, the liquid being pumped, the actual specifications vs rated specifications of the pump, the ambient conditions, the inlet conditions and the accessories in the system.