621F
TIER 4
Print No. 47387703
Service Manual
Wheel Loader
621F Wheel Loader
Repair Manual
47387703
Table of Contents
Description
Section No.
General
Tab 1
Section Index - General
General Torque Specifications
1001
Fluids and Lubricants
1002
Metric Conversion Chart
1003
Engines
Tab 2
Section Index - Engines
Engine and Radiator Removal and Installation
2000
Stall Tests
2002
After Cooler
2003
SCR System Sensors
2020
SCR Catalyst
2030
Engine Intake Temperature/Humidity Sensor
2040
DEF/ADBLUE Heater Control Valve
2050
DEF/ADBLUE DNOx Supply Module
2060
DEF/ADBLUE Dosing Injector
2070
DEF/ADBLUE Supply Tank
2080
DEF/ADBLUE Supply Tank Level and Temperature Sensor/Pick-up and Heater
2090
DEF/ADBLUE Supply Filters
2100
For Engine Repair, See the Engine Service Manual (sold separately)
84392428
Fuel System
Tab 3
Section Index - Fuel System
For Fuel System Repair, See the Engine Service Manual (sold separately)
84392428
Electrical
Tab 4
Section Index - Electrical
Removal and Installation of Starter and Alternator
4001
Electrical Specifications and Troubleshooting
4002
Batteries
4003
Instrument Cluster
4005
Steering
Tab 5
Section Index - Steering
Removal and Installation of Steering Components
5001
Steering Specifications, Pressure Checks, and Troubleshooting
5002
Steering Cylinders
5005
Center Pivot
5006
Auxiliary Steering Motor and Pump
5008
Joystick Steering System (JSS)
5009
Power Train
Tab 6
Section Index - Power Train
Removal and Installation of Power Train Components
6001
Transmission Specifications, Pressure Checks, and Troubleshooting
6002
4 Speed Transmission
6003
Front Axle
6004
Rear Axle
6004
Drive Shafts, Center Bearing, and Universal Joints
6005
Wheels and Tires
6006
Brakes
Tab 7
Section Index - Brakes
Removal and Installation of Brake Components
7001
Hydraulic Brake Troubleshooting
7002
Brake Pump
7003
Brake Accumulators
7004
Parking Brake
7008
Hydraulics
Tab 8
Section Index - Hydraulics
How to Read Hydraulic Schematics
8000
Removal and Installation of Hydraulic Components
8001
Hydraulic Specifications, Tro