73
SJ519 TH
216942AC
Hydraulic System
Section 4 – Troubleshooting Information
5.
Stuck or defective lift counterbalance valves CB3
Clean valve. Check O-rings on valve. Repair or
replace valve as required
6.
Defective carriage tilt cylinder C2
Check seals on cylinder. Replace as necessary.
Replace cylinder if defective
7.
Defective tilt compensation cylinder C3
Check seals on cylinder. Replace as necessary.
Replace cylinder if defective
4.3-8 No carriage Tilt Down
1.
Stuck or defective joystick JS1
Clean valve. Check operation of valve. Repair or
replace valve as required
2.
4H-47-1 stuck or defective
Clean valve. Check operation of valve. Repair or
replace valve as required
3.
Stuck or defective carriage tilt valve V3
Clean valve. Check operation of valve. Repair or
replace valve as required
4.
RV4 misadjusted or defective
Adjust pressure, replace if defective
5.
Stuck or defective lift counterbalance valves CB3
Clean valve. Check O-rings on valve. Repair or
replace valve as required
6.
Defective carriage tilt cylinder C2
Check seals on cylinder. Replace as necessary.
Replace cylinder if defective
7.
Defective tilt compensation cylinder C3
Check seals on cylinder. Replace as necessary.
Replace cylinder if defective
4.3-9 No Aux. Functions
1.
4H-237A/4H-237A-1 stuck or defective
Clean valve. Check operation of valve. Repair or
replace valve as required
2.
Stuck or defective Aux. valve V2
Clean valve. Check operation of valve. Repair or
replace valve as required
3.
RV2 and/or RV3 misadjusted or defective
Adjust pressure, replace if defective
4.
Stuck or defective Auxiliary counterbalance valve
(if equipped)
Clean valve. Check O-rings on valve. Repair or
replace valve as required
5.
Defective Auxiliary/Optional cylinder(s)
Check seals on cylinder. Replace as necessary.
Replace cylinder if defective
4.3-10 Hard or No Steering
1.
Stuck or defective EC1 valve
Clean valve. Check operation of valve. Repair or
replace valve as required
2.
Stuck or defective shuttle valve SV1
Clean valve. Repair or replace valve as required
3.
Stuck or defective steering motor OSM1
Check O-rings and clean valve. Repair or replace
orbit motor as required
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...