Parker Hydraguide HGA Series Service Procedure Download Page 1 | Manualshive

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Hydraulics

Bulletin 2751-001-M1/USA

Hydraguide™
Service Procedure

Effective:

July 1, 2000

HGA Series Hydrostatic
Steering System

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Summary of Contents for Hydraguide HGA Series

Page 1: ...Hydraulics Bulletin 2751 001 M1 USA Hydraguide Service Procedure Effective July 1 2000 HGA Series Hydrostatic Steering System...

Page 2: ...oduct catalog Due to the variety of operating conditions and applications for these products or systems the user through its own analysis and testing is solely responsible for making the final selecti...

Page 3: ...ring Section 8 Rotor Operation 8 Power Steering Operation 9 Manual Steering Operation 9 Exploded View 10 Service Parts List 11 Service Procedure 13 Work Conditions 13 Seal Replacement Instructions 14...

Page 4: ...rvice Manual HGA Hydraguide Hydraulics Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee 4 Typical Oil Flow SUPPLY PRESSURE From Power Pump RETURN OIL FLOW To Reservoir M...

Page 5: ...e Manual HGA Hydraguide Hydraulics Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee 5 Typical Oil Flow OIL FLOW From Recirculating Valve RETURN OIL To Recirculating Valv...

Page 6: ...in the high pressure circuit a loss of power steering will result The HGA however is designed to have some manual steering capability depending on the installation If you can t manually steer the vehi...

Page 7: ...gine driven pump for power steering Emergency manual operation is also described Satisfactory performance of this system requires a well engineered installation designed for the particular type of veh...

Page 8: ...n of the metering section is to meter the oil to the power cylinder maintaining the relationship between the hand wheel and the steered wheels An additional function of the metering section is to act...

Page 9: ...axially displaced within the body fluid channels are selected connecting the engine driven pump to the intake side of the rotor set via the WARNING ALL STEERING MECHANISMS ARE LIFE AND LIMB ITEMS AS...

Page 10: ...her 38 End Cover 39 Special Bolt 1 Nut 2 Dirt Water Seal 3 Retaining Ring 4 Backup Washer 5 Seal 6 Screw 7 Upper Cover 8 Seal 9 Shim 10 Retaining Ring 11 Thrust Washer 12 Thrust Bearing 13 Thrust Wash...

Page 11: ...14 15 16A 16C 16B 16D 17 18 23 Thrust Thrust Spring Spacer Pinhole Wheel Mount Full Bolt Straight Needle Drive Ball Bearing Washer Bearing Washer Shaft Shaft Groove Spline Roller Ring 5 16 dia 063979...

Page 12: ...1290 021306 BASE A10550 HGA013008 4772480221 HGA 16 506609 HGA167005 1 001 099074 2 022 032628 2 203 021292 021382 BASE A10562 HGA013008 4772480234 HGA 20 HGA207005 1 252 099075 2 272 032620 2 511 021...

Page 13: ...or table is used A piece of clean wrapping paper makes an excellent dispos able top Outside dirt should be cleaned off before disconnect ing lines and port holes should be plugged immedi ately after...

Page 14: ...the Hydraguide unit input shaft with cellophane tape to protect the new seal 5 when it is assembled over the sharp edges of the input shaft 7 Lubricate the new seal using hydraulic oil and install the...

Page 15: ...t in the plate and is non serviceable See Figure HGA 8 4 Remove the rotor seal 36 and seal retainer 35 by bumping the can sideways with a soft hammer to loosen it from the housing and lift off the rot...

Page 16: ...r 7 with shaft seal pack age Items 2 thru 5 intact Remove spacer item 15 15 Remove shims 9 from either upper cover 7 cavity or from face of thrust washer 11 Count and record the number of shims to aid...

Page 17: ...ution The actuator ball may fall free and care should be used to not lose it 22 Do not remove the ball retainer spring 24 unless replacement is required If necessary to remove this spring discard the...

Page 18: ...n and the circular motion of the commu tator The sides of these components are ground and lapped and should be free from nicks burrs and scoring 1 Spacer 29 2 Manifold 32 3 Rotor 31 4 Commutator 34 an...

Page 19: ...nput shaft 16 and spool 22 assembly in a vertical position with the shaft end on the table surface NOTE Rotate the input shaft 16 out of the valve spool 22 until input shaft will no longer rotate Ther...

Page 20: ...s After torquing the four screws 6 revolve unit in vise so that the input shaft is pointing downward In order to determine that the unit is shimmed correctly the drive link 30 must be in its proper po...

Page 21: ...be down in their slots with no part of spring protruding out either side of metering element Figure HGA 22 Figure HGA 23 Figure HGA 24 Figure HGA 25 20 Install manifold 32 over assembly posts and onto...

Page 22: ...Figure HGA 28 Note Rotate input shaft during step 2 to prevent binding 27 Relocate HGA unit in a vise with the input shaft up Cover end of input shaft with cellophane tape to protect new seal 5 when...

Page 23: ...the pins with heavy hammer blows as this may damage the HGA unit 7 Remove the wheel tube 5 8 Remove the coupling 2 9 Remove the clamp assembly 1 TO ASSEMBLE COLUMN 1 Assemble the clamp assembly 1 ont...

Page 24: ...eering wheel left and right from stop to stop of the road wheels to bleed out air Replenish oil as necessary 7 The air will bleed out only at the reservoir there fore the oil must be circulated in bot...

Page 25: ...traighten or bend any steering part Prevent dirt or other foreign matter from entering the hydraulic system Clean off around filler caps before checking oil level Investigate and correct any external...

Page 26: ...Bulletin 2751 001 M1 USA Service Manual HGA Hydraguide Hydraulics Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee 26 Notes...

Page 27: ...Bulletin 2751 001 M1 USA Service Manual HGA Hydraguide Hydraulics Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee 27 Notes...

Page 28: ...Bulletin 2751 001 M1 USA Service Manual HGA Hydraguide Hydraulics Parker Hannifin Corporation Hydraulic Pump Motor Division Greeneville Tennessee 28 Notes...

Page 29: ...rules or regulations of any government or government agency fires floods delays or failures in delivery of carriers or suppliers shortages of materials and any other cause beyond Seller s control 12 E...

Page 30: ...Parker Hannifin Corporation 2745 Snapps Ferry Road Greeneville TN 37745 USA Tel 423 639 8151 FAX 423 787 2418 Web site http www parker com HGA 8 2000 Hydraulics...

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