Kubota R420A, R520A, R420S & R520S Wheel Loader Repair Manual

Kubota R420A, R520A, R420S, R520S Wheel Loader Workshop Manual – 820 Pages
Kubota R420A, R520A, R420S, R520S Wheel Loader Service Repair Manual – 322 Pages
Kubota R420A, R520A, R420S, R520S Wheel Loader Workshop Service Manual
Kubota Wheel Loader Model R420A, R520A, R420S, R520S
Kubota R420A, R520A, R420S, R520S Wheel Loader Service Manual – 322 Pages

Table of Content of the Workshop Service Manual

I GENERAL
III ENGINE
IV HYDRAULIC SYSTEM
V BRAKE SYSTEM AND POWER TRAIN
VII BACKHOE
VI ELECTRICAL SYSTEM
VIII SUPPLEMENT

To ensure safety at all times, it is important to inspect and maintain the engine on a regular basis. For further safety, it is strongly recommended to periodically replace the following parts which are most essential to safe operation.

These parts tend to wear out or deteriorate with time and it is often difficult to determine their condition by periodic inspection. Therefore, even if no defect is found, they should be replaced at certain intervals to maintain their safe operation.

If any defect is found before the specified time, immediately replace or repair the part as per procedures in R420A, R520A, R420S, R520S Wheel Loader workshop service manual.
IMPORTANT INSPECTION ITEMS AFTER REASSEMBLING
a Operate the Kubota R420A, R520A, R420S, R520S Wheel Loader and check for Unusual Noise and Vibrations.
b Make Sure the Safety decals and Wire harness Clamps are in their Specified Positions.

c With the Machine Front in a Specified Posture, Check the Amount of Hydrauric Oil Checking the oil level (For further details, refer to the Wheel Loader R420A, R520A, R420S, R520S Operators Manual)

1) Park the machine on a level ground.
2) Make sure the hydraulic oil temperature is in the range of 10-30C (50-86F) and see if the oil level is within the specified zone of the oil level gauge.
3) Keep the machine front as shown as following posture.