Complete workshop & service manual with electrical wiring diagrams for JCB Wheeled Loading Shovel (WLS) 446, 456. It's the same service manual used by dealers that guaranteed to be fully functional and intact without any missing page.
This JCB Wheeled Loading Shovel (WLS) 446, 456 service & repair manual (including maintenance, overhaul, disassembling & assembling, adjustment, tune-up, operation, inspecting, diagnostic & troubleshooting…) is divided into different sections. Each section covers a specific component or system with detailed illustrations. A table of contents is placed at the beginning of each section. Pages are easily found by category, and each page is expandable for great detail. The printer-ready PDF documents work like a charm on all kinds of devices.
9803-4180 - JCB Wheeled Loading Shovel (WLS) 446, 456 Service Manual.pdf
Wheeled Loading Shovel - 446, 456
Section 1 - General Information
Section 2 - Care and Safety
Section 3 - Routine Maintenance
Section A - Attachments
Section B - Body and Framework
Section C - Electrics
Section E - Hydraulics
Section F - Transmission
Section G - Brakes
Section H - Steering
Section K - Engine
Checking Maximum Pressure
The maximum pressure can be checked by operating one of the auxiliary services since they do not employ ARVs.
1 Fit a 0-400 (6000 lbf/in2) bar pressure gauge at test connector A. K Fig 55. ( T E-90).
2 Start engine and allow to idle.
3 Operate an auxiliary service and observe the maximum system pressure registered on the gauge.
If this figure does not comply with the figure stipulated in the K Technical Data ( T E-1) the pressure must be adjusted at the pump as follows:
a Remove acorn nut F using a 17 mm spanner.
K Fig 54. ( T E-89).
b Release lock nut G using a 17 mm spanner.
c Using a 3 mm Allen key, adjust H until the appropriate pressure registers on the gauge.
d Tighten lock nut G ensuring pressure stays constant.
e Refit acorn nut F.