105
SJ519 TH
216942AC
Non-Routine Maintenance
Section 4 – Procedures
5.6-4 Bleeding Hydraulic Circuits
NOTE
Whenever a hydraulic system is opened up, it
is necessary to bleed or purge the air from the
circuit that was opened.
Bleed Carriage Tilt Circuit
1.
Tilt carriage to full forward position.
2.
Raise boom fully while extending boom to keep
carriage ahead of the front tires.
3.
Tilt carriage to full backward position.
4.
Lower and retract boom fully.
5.
Tilt carriage forward as much as possible and
raise boom to facilitate tilting carriage fully
forward.
6.
Repeat steps 1 through 5, five times
7.
Check for air in the system by leveling forks and
raising and lowering the boom several times
while watching the forks to see if they stay level.
If the forks do not stay level repeat above steps
and re-check.
Bleed Boom Extend/Retract Circuit
▪
Fully extend and retract boom several times with
boom level.
Bleed Boom Raise/Lower Circuit
▪
Fully raise and lower the boom several times.
Ensure carriage remains ahead of the front tires.
Bleed Frame Level Circuit
▪
Tilt telehandler fully side to side several times
with boom in a low position.
Bleed Auxiliary/Optional Circuits
▪
Operate function fully in both directions several
times.
Bleed Outriggers Circuit
▪
Fully lower and raise outriggers several times.
Bleed Brake Circuit
1.
With engine running depress and hold brake
pedal. The hydraulic pump will constantly supply
fluid; there is no need to pump the brake pedal.
2.
Locate bleeder fittings on top of brake calipers
at each wheel.
3.
Starting with the fitting furthest from the pedal
and working your way to the closest, slightly
open each bleeder and close when hydraulic oil
comes out clear.
4.
Slowly loosen hose fitting at pressure switch
shuttle valve on left frame rail. Tighten when fluid
comes out clear.
4.
Upper and Lower Guide Brackets
5.
Cable Tracks
6.
Carrier Assembly
7.
Side Access Holes
Содержание SJ519 TH
Страница 1: ...SERVICE MANUAL 216942AC October 2020 ANSI SJ519 TH TELEHANDLERS...
Страница 4: ...4 SJ519 TH 216942AC Notes...
Страница 22: ...22 SJ519 TH 216942AC Section 1 Scheduled Maintenance Function Tests...
Страница 23: ...23 SJ519 TH 216942AC Section 2 Maintenance Tables...
Страница 34: ...34 SJ519 TH 216942AC Notes...
Страница 35: ...35 SJ519 TH 216942AC Section 3 System Component Identification and Schematics...
Страница 40: ...40 SJ519 TH 216942AC Notes...
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Страница 108: ...www skyjack com...