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9.1 General 
Parts are machined to a very high degree of accurary and finish. On 
certain items the degree of accuracy of fit necessitates selecting parts 
to make up a matched assembly and may only be available as 
matched sets.   

To ensure continued reliability , servicng should only be carried out by 
a skilled fitter who is experienced in working on hydraulics 
components.   

The following general precautions must be observed when servicing 
hydraulic equipment: 

•Absolute cleanliness is essential. Most hydraulic failures are caused
by the ingress of dirt.
•Before dismantling a component, clean external surfaces and drain
all fluide.
•When holding components in a vice, fit soft metal pads over the vice
jaws to prevent damage and distortion to precision surfaces and
bores.
•All parts should be laid out on a clean resilient surface.Special
attention should be paid to the identification of parts and their
dismantling sequence.
•All dismantled metal parts should be washed in a cleaning solvent
and coated with hydraulic fluid.
•The safety management of the company where the work is being
carried out must approve all solvent cleaners in use. The COSHH
regulations must be read and understood.
•It is recommended that all disturbed seals be renewed. If a seal is
reused it should be closely examined for cust, flaws or wear. A seal
that is suspect should never be reused.
•All internal metal parts and seals should be lightly coated with clean
hydraulic oil or a lithium based no.2 grade grease before assembly.
This assists in assembly and lessens the risk of seal damage. Use only
seals provided in component service kits, which are obtainable from

RuggedMade

 engineering co.,ltd or their agents, as these will be of a

different composition and hardness to seals normally commercially
available.

9.2 Hydraulic Pipes and Hoses 

When remvoing and replacing rigid pipes and flexibe hoses the 
following points should be obserived: 

9. MAINTENANCE, DIS

ASSEMBLY

 AND REASSEMBLY

Summary of Contents for MHP13-20

Page 1: ...WARNING OWNER S MANUAL PARTS LIST HYDRAULIC POWER PACK www ruggedmade com Model MHP9 20 Model MHP13 20 30...

Page 2: ...DIAGNOSIS 5 8 ROUTINE SERVICING 6 a Engine 6 b Power Pack 6 9 MAINTENANCE DISMANTLING AND REASSEMBLY 7 a General 7 b Hydraulic Pipes and Hoses 7 c Self Locking Nuts 7 d Thread Locking Compound 7 e Dra...

Page 3: ...model GX270 GX390 GX390 Fuel Gasoline Gasoline Gasoline Flow l min 20 5 28 GPM 20 5 28 GPM 30 7 93 GPM At approx Eng speed rpm 3400 3400 3400 Pressure bar 138 2 000psi 138 2 000psi 138 2 000psi Weigh...

Page 4: ...safety instructions before using the machine and operate the machine in accordance with these instructions Do not run engine in a confined space Do not run engine unless all guards are in position Do...

Page 5: ...When operating machines in confined areas the exhaust fumes must be ventilated Do not operate in an explosive atmosphere Understand and obey the safety labels and instructions attached to the equipmen...

Page 6: ...as recommended for the ambient temperature according to the engine manufacturers handbook Check the condition of the couplings both for cleanliness and damage Connect the hose couplings to the power p...

Page 7: ...nition switch is on fuel tap is on there is fuel in tank engine oil level is correct the choke is in correct position closed if engine is cold open of engine is hot If engine still does not start refe...

Page 8: ...is not blocked with debris Excess back pressure check hoses for blockage Check cooling fan is not damaged Tool fault check tool handbook ENGINE STOPS SUDDENLY Check fuel level in tank Check oil level...

Page 9: ...tion of parts and their dismantling sequence All dismantled metal parts should be washed in a cleaning solvent and coated with hydraulic fluid The safety management of the company where the work is be...

Page 10: ...he drain 9 6 Disassembly and Reassembly Dismantling and reassembly are straightforward by reference to the parts diagrams and parts lists Method 1 RuggedMade power packs are all pre set for correct fl...

Page 11: ...ressure loading valve screwed right in slacken off the lock nut on the relief valve screw in the adjusting screw until the pressure reading is 145 bars and retighten the lock nut Slacken off the press...

Page 12: ...anty Parts believed to be defective must be returned to RuggedMade s Warranty Center at customer s expense for inspection For proprietary items such as engines the original manufacturer s warranty and...

Page 13: ...PARTS LIST HYDRAULIC POWER PACK MHP9 20...

Page 14: ...FUEL TANK ASSY...

Page 15: ...0 04 01 1 7 COUNTERSUNK HEAD RIVETED NUTS GB17880 2 M5 10 8 LIQUID TEMPERATURE GAUGE YWZ1 80T 1 9 FUEL TANK PHP9 20 04 01 1 10 HOT RESISTANCE PLATE PHP9 20 04 02 1 11 SUCTION FILTER WU 63X100 J 1 12 H...

Page 16: ......

Page 17: ...HEXAGON SOCKET HEAD CAP SCREWS GB70 1 M5x10 1 32 FILTER INSTALLATION TUBE PHP9 20 05 06 1 33 SCREW PLUG LINE FILTERS P163542 1 34 VALVE SEALING RUBBER SHEET PHP9 20 05 02 1 35 COMBINED SEALING WASHER...

Page 18: ......

Page 19: ...ING ASSY PHP9 20 03 01 1 57 OIL PUMP INSTALLATION OF FLANGE PHP9 20 03 01 1 58 SHIELD TABLET PHP9 20 03 02 2 59 HEXAGON SOCKET BUTTON HEAD SCREWS GB70 2 M4x10 2 60 OUTER SCRAPER SEAL PHP9 20 03 04 1 6...

Page 20: ......

Page 21: ...DIATOR PHP9 20 02 03 1 82 FAN SHELL ASSY PHP9 20 02 01 1 83 CROSS RECESSED COUNTERSUNK HEAD TAPPING SCREWS GB819 2 M5x12 4 84 SQUARE SET SCREWS WITH SHORT DOG POINT AND CONEEND GB85 M6x16 1 85 FLANGE...

Page 22: ......

Page 23: ...ASSY PHP9 20 01 01 1 111 ENGINE MOUNTING PLATE PHP9 20 01 04 1 112 LEFT PANEL PHP9 20 01 03 1 113 HEXAGONAL HEAD BOLT GB5783 M8x45 4 114 FRONT PANEL PHP9 20 01 12 1 115 HEXAGON SOCKET HEAD CAP SCREWS...

Page 24: ......

Page 25: ...NG SEAL C0 0515A 1 144 WIPER SEAL WSA0 0 0060 N9MN 1 145 O RING SEAL C0 006A 1 146 RETURN SPRING PHP9 20 07 04 1 147 CYLINDER POLE PHP9 20 07 02 1 148 SERVO CYLINDER PHP9 20 07 05 1 149 CYLINDER SUPPO...

Page 26: ...TY REMARKS 158 THROTTLE SERVO HOSE ASSY PHP9 20 06 06 1 159 OIL INLET HOSE ASSY PHP9 20 06 04 1 160 OIL OUTLET HOSE ASSY PHP9 20 06 05 1 161 OIL PUMP INLET HOSE ASSY PHP9 20 06 02 1 162 OIL PUMP OUTLE...

Page 27: ...170 QUICK CONNECTOR FEMALE HEAD FH10 1 1 GF08 2 171 QUICK CONNECTOR MALE HEAD FH10 2 1 GF08 2 172 COMBINATION SEALING WASHER SCR236 4 173 QUICK CONNECT TUBING ASSY PHP9 20 08 01 2 175 DUPLEX DOUBLE H...

Page 28: ...REAKER BRAZING WELDING OF SUPPORT PHP9 20 09 01 1 182 LOCK LOT GB889 1 M12 4 183 WASHER GB97 1 12 8 184 HYDRAULIC BREAKER PICKS QIAN SUPPORT PLATE PHP9 20 09 02 1 185 HEXAGONAL HEAD BOLT GB5783 M12x55...

Page 29: ...PARTS LIST HYDRAULIC POWER PACK MHP13 20 30...

Page 30: ......

Page 31: ...WZ1 80T LIQUID TEMPERATURE GAUGE 41403013 1 9 PHP13 30 04 01 OIL TANK 41206007 1 10 PHP9 20 04 02 RESISTANCE HOT PLATE 40203204 1 11 WU 63X100 J OIL FILTER 41402010 1 12 GB5783 M8x30 HEXAGON BOLT 2010...

Page 32: ......

Page 33: ...H10 1 1 GF08 QUICK CONNECTORS NUT HEAD 41105005 1 31 GB70 1 M5x10 HEXAGON SOCKET CAP SCREWS 20306002 1 32 PHP9 20 05 06 FILTER INSTALLATION TUBE 40505027 1 33 P163542 SCREW PLUG LINE FILTERS 41402022...

Page 34: ......

Page 35: ...9 20 03 01 OIL PUMP INSTALLATION OF FLANGE 40203203 1 58 PHP9 20 03 02 SHIELD TABLET 40201026 2 59 GB70 2 M4x10 HEXAGON SOCKET BUTTON HEAD SCREWS 20307014 2 60 PHP9 20 03 04 OUTER STAUBOSPHERE 4120108...

Page 36: ......

Page 37: ...R 41402021 1 82 PHP9 20 02 01 FAN SHELL COMPONENTS 40303044 1 83 GB819 2 M5x12 CROSS RECESSED COUNTERSUNK HEAD SCREW 20302004 6 84 GB821 M6x16 SQUARE FLAT END SET SCREWS 20318015 1 85 PHP9 20 02 02 04...

Page 38: ......

Page 39: ...E COMPONENTS 40305040 1 111 PHP9 20 01 04 ENGINE MOUNTING PLATE 40203197 1 112 PHP13 30 01 03 LEFT ELBOW COVER 40203206 1 113 GB5783 M8x45 HEXAGON BOLT 20102108 4 114 PHP13 30 01 12 FRONT PLATE 402032...

Page 40: ......

Page 41: ...I9 17 4 5 6 WIPER SEAL 21199026 1 145 C0 006A O RING 21199025 1 146 PHP9 20 07 04 RETURN SPRING 40103030 1 147 PHP9 20 07 02 CYLINDER POLE 40101019 1 148 PHP9 20 07 05 CYLINDER 40505028 1 149 PHP13 30...

Page 42: ......

Page 43: ...HP9 20 06 06 THROTTLE TUBING COMPONENTS 41001051 1 159 PHP9 20 06 04 OIL INLET PIPE COMPONENTS 41001049 1 160 PHP9 20 06 05 OIL PIPELINE COMPONENTS 41001050 1 161 PHP9 20 06 02 PUMP INLET PIPE COMPONE...

Page 44: ......

Page 45: ...F08 QUICK CONNECTORS BOLT HEAD 41105005 2 171 FH10 2 1 GF08 QUICK CONNECTORS NUT HEAD 41105006 2 172 SCR236 COMBINED SEALING WASHER 22 21199023 4 173 PHP9 20 08 01 QUICK CONNECT TUBING COMPONENTS 6M 4...

Page 46: ......

Page 47: ...01 HYDRAULIC PICKS COMPOUND SUPPORT 40306010 1 182 GB889 1 M12 LOCKNUT 20405007 4 183 GB97 1 12 WASHER 20501010 8 184 PHP9 20 09 02 HYDRAULIC PICKS COMPOUND SUPPORT 40207181 1 185 GB5783 M12x55 HEXAG...

Page 48: ...7 Market Street Rockland MA 02370 855 878 4433 855 8 RUGGED www ruggedmade com...

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