Liebherr Hydraulic Excavator R976 R966 R970 R980 Adjustment Check List And Procedure

Contents:

1 Connection to Scull
2 Connection to Wizard
3 Engine RPM and hydraulic od temperature
4 Checking and adjusting servo control pressure
5 Checking joysticks, mini-joysticks and pedals
6 Checking high pressure transmitters
7 Checking pulse transmitter on slewing gear motor
8 Checking solenoid valve Y50 for power regulating pressure
9 Checking and adjusting working pumps
10 Adjusting slewing gear pump
11 Checking and adjusting hydrostatic cooler fan drive
12 Checking engine power (power test)
13 Adjusting solenoid valves for flow limitation of pumps
14 Adjusting high pressure circuit 1 (option AHS 11)
15 Checking secondary PR valves on LBS (line break safety) valves for hoist cylinders
16 Checking secondary PR valve on LBS (line break safety) valve for stick cylinder
17 Checking and adjusting secondary PR valves (pressure relief valves)
18 Checking and adjusting primary PR valves (pressure relief valves)
19 Float position of hoist cylinders
20 Adjusting backhoe stick regeneration (from machine software 005)
21 Adjusting rotary actuator (option A52)
22 Adjusting solenoid valves for flow limitation of pumps
23 Checking secondary PR valves on LBS (line break safety) valves for hoist cylinders
24 Checking and adjusting secondary PR valves (pressure relief valves)
25 Checking and adjusting primary PR valves (pressure relief valves)
26 Closing movement of shovel flap
27 Float position of hoist cylinders
28 Load reduction of shovel tilt cylinder (from machine software 002 and with valve Y414)