JLG boom lifts (450AJ, 600AJ, 800AJ, 460SJ, 660SJ, 860SJ, 1250AJP, M450AJ, M600JP)
JLG error code 8511 — LOAD PIN - FORCE TOO LOW OVER TOWER ANGLE CHANGE
Message on the display: LOAD PIN - FORCE TOO LOW OVER TOWER ANGLE CHANGE · flash code 8/5
Code 8511 occurs in machines: JLG 1250AJP, 1100S, 1100SJP.
warning / function limited
Load pin force did not change enough for the tower angle movement.
Description from the JLG service manual, in the original wording.
Possible causes
The manual does not list the causes for this code: the service technician establishes them during diagnosis of the machine.
What you can do
Switch the machine off with the emergency stop and switch it on again. If the code comes back, do not use the machine and call service.
What service does
A qualified service technician reads the code with the manufacturer's diagnostic tools, finds the cause, clears the code and carries out a function test.
Source: JLG Service and Maintenance Manuals: 600AJ (3121201), 800AJ (3120858), 460SJ, 860SJ, 1250AJP (3122581800), M450AJ (3121829), M600JP (3121711), Diagnostic Trouble Codes tables.
The descriptions are quoted from the manufacturer's service documentation and are for guidance only. Clearing codes, calibrations and repairs are carried out by a qualified service technician according to the manual for the specific serial number. A machine with an active blocking code must not be used until the cause has been removed.
Does code 8511 not go away?
RK Rental services JLG lifts at our workshop or on site at the customer's premises (construction site, factory, warehouse). We read the code, remove the cause and select the parts by serial number.
Neighbouring JLG codes
- 8487BCS - MULTIPLE FAILURES ACTIVE
- 8492MAIN CYLINDER ANGLE SENSOR #2 - OUT OF RANGE LOW
- 8510LOAD PIN - FORCE VALUES NOT CHANGING
- 8512LOAD PIN - FORCE TOO LOW OVER MAIN ANGLE CHANGE
- 8513LOAD PIN - FORCE TOO LOW OVER MAIN LENGTH TRANSITION
- 8610LEFT FRONT STEER RIGHT VALVE - SHORT TO BATTERY OR OPEN CIRCUIT