JLG TOUCAN 861 Service Manual page 41

III-3
Diag VIII
Jib raising problems
Low pressure (<8MPa)
Adjust the jib elevation pressure
relief valve.
Remove and inspect the relief valve.
Remove and inspect the flow control valve
located on the auxiliary manifold (rep. C).
Remove and inspect the shuttle valve
located on the platform support.
Check / replace the flow regulator.
Check / replace the load holding valve
Replace the cylinder or
contact JLG Product Support.
Models
Toucan 861
Updated 04-06
BREAKDOWN
Preliminary checks
This movement is the only one affected.
No external leak.
Battery charged correctly.
Battery connections in good condition.
The machine is on flat and horizontal ground.
Measure the pressure during the movement
Impossible
Correct
Correct
Correct
Normal pressure (8-14MPa)
Contact JLG Product Support.
Incorrect Clean and/or replace the seals
and/or replace the relief valve.
Incorrect Clean and/or replace the
flow control valve.
Incorrect Clean and/or replace the
shuttle valve.
III-3
41