MAINTENANCE
1550 Gas/LPG/Diesel MM283 (6--91)
3--12
HYDRAULIC COMPONENTS
TROUBLESHOOTING
Problem
Cause
Remedy
Hydraulic cylinder failure
Piston seals leaking
Install seal kit
Barrel worn or rod bent
Replace cylinder
Hydraulic control valve failure
Valve seals leaking
Install seal kit
Solenoid failure
Replace solenoid
Solenoid spool sticking
Replace valve section
Check valve sticking
Replace valve
Relief valve stuck open (leaking)
Clean or replace relief valve
Hydraulic steering valve failure Valve leaking
Install seal kit
Drive link failure
Replace drive link
Thrust bearing worn
Replace thrust bearing
Gerotor worn
Replace gerotor set
Hydraulic motor failure
Motor leaking
Install seal kit
Drive link failure
Replace drive link
Gerotor worn
Replace gerotor set
Output shaft failure
Replace output shaft and bearings
Hydraulic vane pump failure
Pump leaking
Install seal kit
Vane set failure
Replace vane set
Relief valve stuck
Replace relief valve
Engine-to-pump coupling failure
Replace coupling
Hydraulic piston pump failure
Pump leaking
Install seal kit
Relief valve stuck
Clean or replace relief valve
Integral charge pump failure
Replace charge pump
Rotating group worn
Replace rotating group
Shaft failure
Replace shaft
Backplate worn
Replace backplate
Engine-to-pump coupling failure
Replace coupling
Summary of Contents for 1550
Page 16: ...SPECIFICATIONS 1550 Gas LPG Diesel MM283 6 91 1 2 ...
Page 100: ...APPENDIX 1550 Gas LPG Diesel MM283 6 91 4 2 ...
Page 112: ...STANDARD PARTS 1550 Gas LPG Diesel MM283 11 07 6 6 ...
Page 237: ...STANDARD PARTS 6 131 1550 Gas LPG Diesel MM283 3 11 ...
Page 286: ...STANDARD PARTS 1550 Gas LPG Diesel MM283 8 02 6 180 ...
Page 301: ...LPG PARTS 7 15 1550 Gas LPG Diesel MM283 11 07 ...
Page 363: ...DIESEL PARTS 8 53 1550 Gas LPG Diesel MM283 2 05 ...
Page 378: ...DIESEL PARTS 1550 Gas LPG Diesel MM283 2 05 8 68 ...
Page 436: ...BREAKDOWNS 1550 Gas LPG Diesel MM283 8 02 10 38 ...
Page 456: ...CONTINENTAL ENGINE BREAKDOWN GASOLINE LPG 1550 Gas LPG Diesel MM283 2 95 11 20 ...
Page 534: ...PERKINS ENGINE BREAKDOWN DIESEL 1550 Gas LPG Diesel MM283 9 01 15 30 ...
Page 562: ...1011676 CAT ENGINE BREAKDOWN DIESEL 1550 Gas LPG Diesel MM283 2 05 16 28 ...