Description
Komatsu WA420-1 Wheel Loader Shop Manual SEBMU420106 – PDF DOWNLOAD
FILE DETAILS:
Komatsu WA420-1 Wheel Loader Shop Manual SEBMU420106 – PDF DOWNLOAD
Language : English
Pages : 1082
Downloadable : Yes
File Type : PDF
IMAGES PREVIEW OF THE MANUAL:
TABLE OF CONTENTS:
Komatsu WA420-1 Wheel Loader Shop Manual SEBMU420106 – PDF DOWNLOAD
MACHINE MODEL SERIAL No.
WA420-1 10001 and up
10 ENGINE
12 TESTING AND ADJUSTING
13 DISASSEMBLY AND ASSEMBLY
20 POWER TRAIN
21 STRUCTURE AND FUNCTION
22 TESTING AND ADJUSTING
23 DISASSEMBLY AND ASSEMBLY
24 MAINTENANCE STANDARD
40 STEERING SYSTEM
41 STRUCTURE AND FUNCTION
42 TESTING AND ADJUSTING
43 DISASSEMBLY AND ASSEMBLY
44 MAINTENANCE STANDARD
50 BRAKE AND AIR SYSTEM
51 STRUCTURE AND FUNCTION
52 TESTING AND ADJUSTING
53 DISASSEMBLY AND ASSEMBLY
54 MAINTENANCE STANDARD
60 WORK EQUIPMENT SYSTEM
61 STRUCTURE AND FUNCTION
62 TESTING AND ADJUSTING
63 DISASSEMBLY AND ASSEMBLY
64 MAINTENANCE STANDARD
80 ELECTRIC AND ELECTRONIC SYSTEM
81 STRUCTURE AND FUNCTION
82 TESTING AND ADJUSTING 83 DISASSEMBLY AND ASSEMBLY
90 OTHERS
93 DISASSEMBLY AND ASSEMBLY
97 GEAR PUMP
DESCRIPTION:
Komatsu WA420-1 Wheel Loader Shop Manual SEBMU420106 – PDF DOWNLOAD
MACHINE MODEL SERIAL No.
WA420-1 10001 and up
GENERAL PRECAUTIONS :
Mistakes in operation are extremely dangerous. Read the OPERATION & MAINTENANCE MANUAL carefully BEFORE operating the machine.
1. Before carrying out any greasing or repairs, read all the precautions given on the decals which are fixed to the machine.
2. When carrying out any operation, always wear safety shoes and helmet. Do not wear loose work clothes, or clothes with buttons missing.
● Always wear safety glasses when hitting parts with a hammer.
● Always wear safety glasses when grinding parts with a grinder, etc.
3. If welding repairs are needed, always have a trained, experienced welder carry out the work. When carrying out welding work, always wear welding gloves, apron, glasses, cap and other clothes suited for welding work.
4. When carrying out any operation with two or more workers, always agree on the operating procedure before starting. Always inform your fellow workers before starting any step of the operation. Before starting work, hang UNDER REPAIR signs on the controls in the operator’s compartment.
5. Keep all tools in good condition and learn the correct way to use them.
6. Decide a place in the repair workshop to keep tools and removed parts. Always keep the tools and parts in their correct places. Always keep the work area clean and make sure that there is no dirt or oil on the floor. Smoke only in the areas provided for smoking. Never smoke while working.
PREPARATIONS FOR WORK:
7. Before adding oil or making repairs, park the machine on hard, level ground, and block the wheels or tracks to prevent the machine from moving.
8. Before starting work, lower blade, ripper, bucket or any other work equipment to the ground. If this is not possible, insert the safety pin or use blocks to prevent the work equipment from falling. In addition, be sure to lock all the control levers and hang warning signs on them.
9. When disassembling or assembling, support the machine with blocks, jacks or stands before starting work.
10. Remove all mud and oil from the steps or other places used to get on and off the machine. Always use the handrails, ladders or steps when getting on or off the machine. Never jump on or off the machine. If it is impossible to use the handrails, ladders or steps, use a stand to provide safe footing.
PRECAUTIONS DURING WORK :
11. When removing the oil filler cap, drain plug or hydraulic pressure measuring plugs, loosen them slowly to prevent the oil from spurting out. Before disconnecting or removing components of the oil, water or air circuits, first remove the pressure completely from the circuit.
12. The water and oil in the circuits are hot when the engine is stopped, so be careful not to get burned. Wait for the oil and water to cool before carrying out any work on the oil or water circuits.
13. Before starting work, remove the leads from the battery. ALWAYS remove the lead from the negative (-) terminal first.
S.V 30/12/24
