Case 621F , 721F , Tier 4B (final) Wheel Loader Workshop Service Repair Manual

Download Complete Service Repair Manual for Case 621F , 721F , Tier 4B (final) Wheel Loader.

Part number 47841827
English
February 2015

This Factory Service Repair Manual offers all the service and repair information about Case 621F , 721F , Tier 4B (final) Wheel Loader. The information on this manual covered everything you need to know when you want to repair or service Case 621F , 721F , Tier 4B (final) Wheel Loader.

Models Covered:

621F
721F

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Manual Contents:

INTRODUCTION
Engine…………………………………………………………………………… 10
[10.001] Engine and crankcase . . . . . . . . . . . . . . . . . . . . . . . . . 10.1
[10.202] Air cleaners and lines . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . 10.2
[10.500] Selective Catalytic Reduction (SCR) exhaust treatment . . . . . . . . . . 10.3
[10.400] Engine cooling system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10.4
[10.414] Fan and drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10.5
[10.310] Aftercooler. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10.6
[10.304] Engine lubrication system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10.7
Transmission…………………………………………………………………… 21
[21.113] Powershift transmission . . . . . . . . . . . . . . . . . . .. . . . . . . . . 21.1
[21.135] Powershift transmission external controls. . . . . . . . . . . . . . . . . 21.2
[21.155] Powershift transmission internal components. . . . . . . . . . . . . . . . 21.3
[21.700] Torque converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . 21.4
Four-Wheel Drive (4WD) system ………………………………………….. 23
[23.314] Drive shaft. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23.1
Front axle system …………………………………………………………….. 25
[25.100] Powered front axle . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . 25.1
[25.102] Front bevel gear set and differential . . . . . . . . . . . . . . . . . . . . . . 25.2
[25.108] Final drive hub, steering knuckles, and shafts . . . . . . . . . . . . . . . . . 25.3
Rear axle system……………………………………………………………… 27
[27.100] Powered rear axle. . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . 27.1
[27.106] Rear bevel gear set and differential . . . . . . . . . . . . . . . . . . . . . . 27.2
[27.120] Planetary and final drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27.3
Brakes and controls ………………………………………………………….. 33
[33.202] Hydraulic service brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33.1
[33.110] Parking brake or parking lock . . . . . . . . . . . . . . . . . .. . . . . . . . . . 33.2
Hydraulic systems…………………………………………………………….. 35
[35.000] Hydraulic systems. . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . 35.1
[35.300] Reservoir, cooler, and filters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35.2
[35.106] Variable displacement pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35.3
[35.357] Pilot system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35.4
[35.752] Hydraulic fan drive cooling system. . . . . . . . . . . . . . . . . . . . . . . . . 35.5
[35.355] Hydraulic hand control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35.6
[35.724] Front loader hydraulic system control . . . . . . . . . . . . . . . . . . . . . 35.7
[35.701] Front loader arm hydraulic system . . . . . . . . . . . . . . . . . . . 35.8
[35.723] Front loader bucket hydraulic system . . . . . . . . . . . . . . . . . . . . . . . . . 35.9
[35.734] Tool quick coupler hydraulic system . . . . . . . . . . . . . . . . . . 35.10
Frames and ballasting ……………………………………………………….. 39
[39.100] Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . 39.1
Steering…………………………………………………………………………. 41
[41.101] Steering control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41.1
[41.200] Hydraulic control components. . . . . . . . . . . . . . . . . . . . . . . . . 41.2
[41.216] Cylinders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41.3
[41.910] Auxiliary steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41.4
Wheels………………………………………………………………………….. 44
[44.511] Front wheels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44.1
[44.520] Rear wheels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44.2
Cab climate control …………………………………………………………… 50
[50.200] Air conditioning. . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . 50.1
Electrical systems …………………………………………………………….. 55
[55.100] Harnesses and connectors. . . . . . . . . . . . . . . . . . . . . . . . . . 55.1
[55.301] Alternator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55.2
[55.302] Battery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55.3
[55.011] Fuel tank system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55.4
[55.988] Selective Catalytic Reduction (SCR) electrical system . . . . . . . . . . . . 55.5
[55.989] Exhaust Gas Recirculation (EGR) electrical system . . . . . . . . . . . . . . . . . 55.6
[55.012] Engine cooling system . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55.7
[55.519] Cab brake controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55.8
[55.030] Service brake electrical system . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55.9
[55.031] Parking brake electrical system . . . . . . . . . . . . . . . . . . . . . . . . . . . 55.10
[55.512] Cab controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55.11
[55.051] Cab Heating, Ventilation, and Air-Conditioning (HVAC) controls. . . . . . .. . 55.12
[55.050] Heating, Ventilation, and Air-Conditioning (HVAC) control system. . . . . . . . 55.13
[55.047] Steering control system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55.14
[55.530] Camera. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . 55.15
[55.518] Wiper and washer system. . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . 55.16
[55.514] Cab lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55.17
[55.408] Warning indicators, alarms, and instruments . . . . . . . . . . . . . . . . . . . . 55.18
[55.DTC] FAULT CODES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55.19
Front loader and bucket……………………………………………………… 82
[82.300] Bucket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . 82.1
Platform, cab, bodywork, and decals ……………………………………… 90
[90.150] Cab. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90.1
[90.156] Cab glazing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90.2
[90.114] Operator protections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90.3

This manual can be used by anyone from a first time owner/amateur to a professional technician.Even the most novice mechanic can also easily follow the step-by-step guides which are made simple by the illustrations and drawings.Keep this manual handy and use it often. Performing routine, preventive maintenance will save you time & money by helping to prevent premature failure and unnecessary repairs.

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Download Case 621F 721F Tier 4B (final) Wheel Loader Workshop Service Repair Manual