Kärcher HD 1050 Service Handbook
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Kärcher HD 1050 Service Handbook

Kärcher HD 1050 Service Handbook

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Service Handbook
HD 1050
5.905-032
07/97

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Summary of Contents for Kärcher HD 1050

  • Page 1 Service Handbook HD 1050 5.905-032 07/97...
  • Page 2 Text and illustrations contained in this manual may be copied, duplicated, and distributed to third parties only with the prior written permission by Karcher lnternational Customer Service Training: ALFRED KÄRCHER GmbH & Co.

  • Page 3: Table Of Contents

    HD 1050 Contents Contents Page A. Unit function ............4 1.

  • Page 4: Unit Function

    On the HD 1050 pressure hose and hand gun to the 3-way nozzle. cleaner, the amount of detergent fed can be steplessly adjusted by means of metering valve.

  • Page 5: High-Pressure Cleaning Without Detergent

    HD 1050 Unit function 4. High-pressure cleaning without 5. Low-pressure cleaning with detergent detergent With the 3-way nozzle switched to low-pressure The water is pumped through the injector to the (large nozzle bore), the water passes at high 3-way nozzle. The pressure at which the water...

  • Page 6: Detergent Metering Valve

    6. Detergent metering valve 8. Switching the 3-way nozzle The knob is pressed onto the detergent metering On the Kärcher HD 1050 cleaner, the nozzle is valve. set by turning the spray lance and or by turning the nozzle garde.

  • Page 7: Function With Servopress Hand Gun Open

    HD 1050 Unit function 9. Function with Servopress hand gun 10. Function with Servopress hand gun fully open partly closed Adjustment of the flow and pressure is effected Relief valve partialy opened. bei setting the Servopress hand gun. Partial circulation operation. lf the Servopress...

  • Page 8: Function With Servopress Hand Gun Closed

    Unit function HD 1050 11. Function with Servopress hand gun The high pressure above the pressure holding fully closed valve, fed by way of the pressure channel, holds the relief valve against its stop so the piston with Relief valve fully opened.

  • Page 9: Basic Settings

    HD 1050 Basic settings B. Basic settings 1. Checking the pump delivery Fit the shut off valve (special tool) to the high pressure outlet, connect the high pressure hose (without hand gun and spray lance). Start the cleaner. Close the shutoff valve as far as necessary to...

  • Page 10: Checking The Detergent Feed

    Basic settings HD 1050 4. Checking the detergent feed Start the cleaner and switch over to “operation with detergent” by turning the 3-way nozzle to low-pressure CHEM. Turn the detergent-feed knob to “O”. When the metering valve is set to position “O”, no detergent must be drawn into the cleaner.

  • Page 11: Trouble-Shooting

    HD 1050 Trouble shooting C. Trouble shooting 1. Cleaner does not run 2. Cleaner does not come up to pressure 1.1 Motor does not run 2.1 Inadequate water supply Check main fuse or circuit braker (16 Amp Check water supply hose (not less than delayed action).
  • Page 12 Trouble shooting HD 1050 2.6 Functional faults in relief valve Safety valve pulsating (repeatedly opens and closes with the hand gun closed). Remove the pressure gauge and valve screw. Pull out the pressure holding valve with pliers (special tool). Dismantle the relief valve completly.
  • Page 13 HD 1050 Trouble shooting 2.7 No detergent is drawn in Detergent check valve sticking. Pull suction hose from the hose nipple. Unscrew the hose nipple using a 19 mm wrench. Caution: The non-return valve could fall out. Remove the spring, ball and O-ring and clean them.

  • Page 14: Internal Water Leakage

    Trouble shooting HD 1050 3. Internal water leakage Measuring the pump delivery, indicates a loss of some water. Possible cause: The suction valves, pressure valves or relief valve are defective or incorrectly mounted. 3.1 Checking the suction valves Remove the housing cover.
  • Page 15 HD 1050 Trouble shooting Caution: It is important for O-rings and support rings to be greased with silicon grease before mounting and that they be inserted correctly. Press the valve into the cylinder head, screw in the valve screw and tighten with a torque of 65 Nm.
  • Page 16 Trouble shooting HD 1050 Replace the O-ring set of the piston and the O-ring set of the bushing, greasing the new parts with silicon grease before fitting. Caution: Be sure to insert the parts in the correct order. Secure the new piston to the rod with Loctite (No.

  • Page 17: Visible Water Leakage

    HD 1050 Trouble shooting 4. Visible water leakage 4.1 Relief valve Unscrew the nuts, pull off the springs and un- screw the screw plug. Pull the rod together with the piston out of the housing. Heat the rod and screw out the piston.
  • Page 18 Trouble shooting HD 1050 4.3 Leakage between the cylinder head and the pump housing A leakages of 1 drop per minute is acceptable. Unscrew the cylinder-head screws and remove the cylinder head. Pull out the high pressure seal ring by hand. If this is difficult, use a puller.

  • Page 19: Oil Leakage

    HD 1050 Trouble shooting 5. Oil leakage from housing 5.1 Oil drain plug leaking Unscrew the oil drain plug and drain the oil into a suitable container. Replace the seal ring. Screw in the oil drain plug and tighten with a torque of 45 Nm.
  • Page 20 Trouble shooting HD 1050 Remove the housing together with the pistons. Pass a suitable screwdriver through the leakage bores and lever out the oil seal rings. Caution: Take care not to damage the sealing surface of the housing. Remove the O-ring.

  • Page 21: Pump Drive Defective

    HD 1050 Trouble shooting 6. Pumps drive defective 6.1 Piston jammed, swash plate worn Remove the cylinder head. Use the mounting screws (special tool) to pull off the housing. Check the pistons for wear and, if necessary, replace the pistons and springs.
  • Page 22 Trouble shooting HD 1050 6.2 Ball bearing and seal defective Remove the cylinder head. Remove the piston housing. Pull the swash plate off the shaft. Remove the oil housing. Carefully lever out the oil seal with a screwdriver. Heat the bearing end of the housing evenly with a flame torch until the ball bearing race falls out.

  • Page 23: Special Tools

    HD 1050 Special tools D. Special tools 2.901-015 Mounting mandrel 2.901-030 Shutoff valve 4.901-038 Swash plate puller 4.901-062 Pliers for valve removal 5.901-069 Servopress hand gun, mounting mandril 5.901-070 Servopress hand gun, mounting tool 6.815-029 Valve seat internal puller 6.816-069 Puller for motor fan...

  • Page 24: Technical Data

    Technical date HD 1050 E. Technical date Cleaner type HD 1050 Part. No. for cleaner 1.720-111 Circuit diagram No. 0.087-027 Voltage Volt Type of current Ph/Hz 3 ~ 50 Hz Full-load power consumption 13,0 Setting of motor overload trip 14,5 - 15,0 High pressure nozzle Working pressure –...

  • Page 25: Circuit Diagrams

    HD 1050 Circuit diagram Phases L1, L2 and L3 are connected to the motor by way of the cleaner’s motor protective switch Q1 (with integral thermal overload protection). M 1 Motor Q1 Motor protective switch with thermal overload trips...
  • Page 26 Notes HD 1050...
  • Page 27 HD 1050 Notes...

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