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Eaton 70142 - User Manual

Eaton 70142
20 pages
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No. 7-623
July,1995
Eaton
®
Medium Duty Piston Pump
Repair Information
Model 70142 / 70144, 20.3 cm
3
/r [1.24 in
3
/r] Displacement
and 70145, 23.6 cm
3
/r [1.44 in
3
/r] Displacement
Variable Displacement Piston Pump design code 01 02
with Valve Plate

Questions and Answers

  • E
    Elizabeth EatonAug 5, 2025
    What to do if the Eaton Water Pump system will not operate in either direction?
    • U
      ushepardAug 5, 2025
      If your Eaton Water Pump system isn't operating in either direction, it could be due to several reasons. Check the oil level in the reservoir and fill to the proper level if it's low. Also, inspect the control linkage, dump valve, and servo control for any defects; repair or replace them as necessary.
  • B
    Brian LindseyAug 12, 2025
    Why is my Eaton Water Pump system operating hot?
    • W
      William BowmanAug 12, 2025
      If your Eaton Water Pump system is operating hot, there are a few potential causes. First, check the oil level in the reservoir and ensure it is at the proper level. If the oil level is correct, the charge by-pass valve or the heat exchanger may be defective, requiring repair or replacement.
  • T
    Timothy WhiteAug 20, 2025
    What to do if the Eaton Water Pump system response is sluggish?
    • R
      Robert ThompsonAug 21, 2025
      If you're experiencing a sluggish system response with your Eaton Water Pump, it could be due to a defective charge pump, servo control, or dump valve, which would need to be repaired or replaced. Another possible cause is a clogged inlet screen or filter, which should also be repaired or replaced.
  • J
    Joshua KingAug 27, 2025
    What to do if Eaton Water Pump operates in one direction only?
    • C
      Charles EsparzaAug 27, 2025
      If your Eaton Water Pump only operates in one direction, it could be due to a defective external control linkage, servo control, or system relief valves. You should repair or replace these components as needed.

Summary

Eaton Pump Identification and Required Tools

Eaton Pump Model and Serial Number Identification

Explanation of product number structure and serial code breakdown.

Disassembly Procedure for Eaton Piston Pumps

Reassembly Procedure for Eaton Piston Pumps

Fault-Logic Troubleshooting Guide

Troubleshooting Symptom: Neutral Difficult to Find

Diagnostic steps for issues with finding neutral operation.

Troubleshooting Symptom: System Operating Hot

Diagnostic steps for overheating system issues.

Troubleshooting Symptom: Operates in One Direction Only

Diagnostic steps for unidirectional operation problems.

Fault-Logic Troubleshooting Action Step Comments

Detailed explanations for each step in the fault-logic diagrams.

Eaton Pump Start-up Procedure

Eaton 70142 Specifications

General IconGeneral
BrandEaton
Model70142
CategoryWater Pump
LanguageEnglish

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