WESTENDORF MAX420 User Manual

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Westendorf Manufacturing Co., Inc. WESTENDORFMFG RR315270

MAX Loaders

MAX420/440

Max Loader

Table of Contents

Questions and Answers:

N
Nancy JonesAug 14, 2025
Why is my WESTENDORF Front End Loader operating slowly?
- J
  Jacqueline WilcoxAug 14, 2025
  Slow operation of your WESTENDORF Front End Loader can stem from several causes: * Insufficient oil supply. * Using oil with excessively heavy viscosity. * A clogged oil filter. * Malfunctioning hydraulic pump. * Air trapped within the hydraulic system. * Internal cylinder leakage. * A faulty valve. * Slow engine speed. * Hydraulic couplers not fully connected. To address this, verify the oil level, switch to oil with the correct viscosity, clean or replace the oil filter, repair or replace the hydraulic pump, locate and fix any leaks, cycle all cylinders to remove air, install a seal repair kit, repair or replace the signal line, increase the engine speed, and check the hydraulic couplers.
P
Peggy Rodriguez DVMAug 18, 2025
What to do if WESTENDORF Front End Loader cannot lift load?
- T
  Tristan RodriguezAug 18, 2025
  If your WESTENDORF Front End Loader is unable to lift a load, the possible causes include a low oil supply, low oil pressure, worn lift cylinders, a malfunctioning hydraulic pump, or an excessive load. To resolve this, first check the oil level and the oil pressure at the tractor valve. If the oil pressure is low, consult the "Hydraulic System Troubleshooting" section for further guidance. Test the lift cylinders by raising the loader 6-8 feet off the ground and disconnecting the hydraulics at the couplers; if the loader settles, there's likely an internal leak, requiring a seal repair kit. You may also need to repair or replace the hydraulic pump or reduce the load.

WESTENDORF MAX420 Specifications

General

Brand	WESTENDORF
Model	MAX420
Category	Front End Loaders
Language	English

Summary

Warranty & Registration

Safety

Recognize Safety Information

Explanation of the safety alert symbol and its importance.

Safety Instructions

General guidelines for safe operation and maintenance.

Safety Alert Symbol and Signal Words

Defines signal words (DANGER, WARNING, CAUTION, NOTICE) and their meanings.

Tractor Requirements

Maintenance and Inspection

Guidelines for regular checks and maintenance of the loader.

Do Not Allow Riders

Avoid Rollover

Detailed advice and precautions to prevent tractor rollover.

Avoid Power Lines and Underground Utilities

Warnings and precautions regarding contact with power lines and utilities.

Detach Loader Safely

Safe procedures for detaching the loader from the tractor.

Prevent Falling Loads

Precautions to prevent loads from falling off the loader or attachment.

Transport Loads Safely

Guidelines for safely transporting loads with the loader.

Raised Loader Safety

Safety warnings and procedures when the loader is raised.

Avoid High Pressure Fluids

Precautions and hazards related to high-pressure hydraulic fluids.

Hydraulic Control Functions

Determination of Ballast

Procedure to determine the correct ballast for tractor stability.

Minimum Tread Settings

Recommended minimum rear wheel tread settings for stability.

Safety Decal Locations

Mounting and Dismounting

Patented Freedom-Mount Smart-Lock

Loader Mounting

Step-by-step instructions for mounting the loader onto the tractor.

Loader Dismounting

Step-by-step instructions for safely dismounting the loader from the tractor.

Remote Control Coupler System

Attachment Dismounting

Attachment Mounting

Operation

Safety - Live With It

General safety rules and responsibilities for operating the equipment.

Pre-Operation Checklist

Checklist of items to verify before operating the loader.

Preparing The Tractor

Attach Mounting Brackets

Hydraulic Control Functions

Flat Face Hydra-Snap

Rotational Level Indicator Calibration

Loader Operation

Fill The Bucket From A Pile

Lifting The Load

Carrying The Load

Dumping The Load

Operating With Float Control

Mechanical Self-Leveling

Backgrade with Self-Leveling

Mounting & Dismounting Self-Leveling Loader

Service & Maintenance

Maintenance Checklist

List of scheduled maintenance tasks to be performed on the loader.

Lubrication

Torque Chart

Operational Troubleshooting

Troubleshooting common operational issues with the loader.

Hydraulic System Troubleshooting

Troubleshooting common hydraulic system problems.

Electronic Troubleshooting

Troubleshooting common electronic issues with the loader's systems.

Hardware Damage Troubleshooting

Exclusive Patented Features

Related product manuals

WESTENDORF MAX440