Kärcher HD 1050 B Cage User manual

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InternationalServiceInformation
International Service Information
June 24th, 1999
HD 1050 B
New Unit Information
HD 1050 B
1.810-987
5.905-950

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InternationalServiceInformation
International Service Information
June 24th, 1999
HD 1050 B
New Unit Information
Equipment
1 High-pressurehoseconnection
2 Pressureandflowcontrol
3 Servopresshandgun
4 Spraylance
5 Three-waynozzle
6 Cleaningagentmeteringvalve
7 Cleaningagentsuctionhose
8 High-pressurepump
9 Engine
10 High-pressureconnection
11 Waterconnection
12 Oilreservoir
13 OIl dip stick, at both sides of engine
14 Accessories bracket
15 Fueltank
16 Recoilhandstart
17 Pressuregauge

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InternationalServiceInformation
International Service Information
June 24th, 1999
HD 1050 B
New Unit Information
Technical features pump
1 Pressuregauge
2 Non-returnvalve
3 Pressurevalve
4 Oilreservoir
5 Shaftseal
6 Swashplatebearing
7 Swashplate
8 Axialrollerbearing
9 Oildrainplug
10 Piston
11 Oilseal
12 Low-pressureseal
13 High-pressureseal
14 Suctionvalve
15 Suctionchamber

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InternationalServiceInformation
International Service Information
June 24th, 1999
HD 1050 B
New Unit Information
Function of overflow valve
1 High-pressureoutlet
2 Cleaningagentinjector
3 Cleaningagentconnection
4 Controlpressureinjector
5 Pressuregauge
6 Screwplugfornon-returnvalve
7 Pressurechamber
8 Connectionborefrompressurechamber
toball(9)
9 Ball
10 Spring
11 Suctionchamber
12 Connectionborefromoverflowvalveto
suctionchamber
13 Waterconnection
14 Spring
15 Adjustingscrewwithlockingnut
16 Overflowvalvespindle
17 Connectionborefrominjectortooverflow
valve(controlpressure)

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InternationalServiceInformation
International Service Information
June 24th, 1999
HD 1050 B
New Unit Information
1. Servopress handgun is open.
When the handgun is completely open, water
flows from the pressure chamber (7) through the
non-return valve (6) and both injectors (2+4) to
the high-pressure outlet (1).
The ball (9) is pressed against the valve seat by
the pump pressure, thus sealing the connection
bore (12) to the suction chamber (11).
The pressure gauge (5) indicates the operating
pressure.
The pressure in the connection bore (17) is
approx. 30 bar less due to the injector influence
(4) (control pressure).
2. Servopress handgun is partly closed.
When the handgun is partly closed, the pressure
in the pressure chamber (7) does not increase.
Due to the decreased water flow rate, the
influence of the injector (4) is reduced so that the
control pressure in the connection bore (17)
increases. The increasing control pressure
pushes the overflow valve spindle (16) against
the spring (14) and slightly to the right. The tip of
the spindle pushes the ball (9) off its seat so that
part of the water can flow through the connection
bores (8) and (12) to the suction chamber (11).
3. Servopress handgun is completely
closed.
When the handgun is completely closed, the
pressure in the pressure chamber (7) increases.
The increased control pressure pushes the
overflow valve spindle (16) via the connection
bore (17) against the spring (14) completely to
the right. The tip of the spindle pushes the ball
(9) off its seat, so that the entire water volume
can flow through the connection bores (8) and
(12) to the suction chamber (11).
As soon as the handgun is closed, the non-return
valve (6) closes. Therefore the complete
pressure in the system between handgun and
non-return valve (6) is trapped.
The pump continues running in circulation mode.
4. Servopress handgun is opened.
When the handgun is opened, the entire pressure
in the system dercreases.
The overflow valve spindle (16) is pushed back
to its original position to the left via the spring
(14). The spring (10) and the pump pressure of
the connection bore (8) push the ball (9) back
onto the valve seat.
The connection bore (8) is thereby closed and
the operating pressure can be built up again.
Function of overflow valve

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InternationalServiceInformation
International Service Information
June 24th, 1999
HD 1050 B
New Unit Information
Adjustment of the bowden cable
1 Throttlelever
2 Innerbowdencableclampingscrew
3 Outerbowdencableclamp
4 Throttleleverstopscrew
5 Bowdencable
6 Adjustingscrewwithlockingnut
7 r.p.m.regulator
1. Switch off engine and release pressure.
2. Back off stop screw (4) as much as
possible.
3. Fasten bowden cable (5) as indicated. The
front end of the outer bowden cable must
be flushly mounted with the clamp (3).

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InternationalServiceInformation
International Service Information
June 24th, 1999
HD 1050 B
New Unit Information
Adjustment overflow valve
Note
Before any adjustments the high-pressure
nozzle, air filter and spark plug must be
checked for damage or wear. All defective
parts must be replaced.
1. Mount test pressure gauge (2), shut-off valve
(1), high-pressure hose and servopress
handgun on high-pressure outlet (3).
The unit pressure gauge is not to be used to
check the operation pressure because it
measures too inaccurate !
2. Set servopress handgun to maximum water
volume and operate the unit.
3. Close shut-off cock (1) slowly until flow rate
has achieved 6,7 to 7,5 litres/min. (see
technical data). This corresponds to the
smallest servopress setting (flow rate
measured by litres).
4. Now set adjusting screw (4) to operation
pressure 208 to 212 bar (see technical
data) and check with test pressure
gauge.
Increase spring tension: pressure
increases.
Decrease spring tension: pressure
decreases.
5. Open shut-off valve completely. Close and
open servopress handgun several times.
6. Repeat step 3 and 4 and adjust once more
if required.
7. Finally secure the adjusting screw with
locking nut (4) and seal with safety paint.
1 Shut-off valve
2 Test pressure gauge
3 High-pressure outlet
4 Adjusting screw with locking nut
5 Overflow valve spindle
6 Water inlet connection

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InternationalServiceInformation
International Service Information
June 24th, 1999
HD 1050 B
New Unit Information
Note:
Before adjusting the full-load r.p.m. of the
engine, the overflow valve must be adjusted.
1. Open shut-off valve completely, set servopress
handgun to maximum water volume and
operate the unit.
2. Set engine speed by the adjusting screw (1),
the test pressure gauge indicates an
operating pressure of 190 to 200 bar. With
this operating pressure the corresponding
operating r.p.m. must also be achieved (see
technical data).
3. Close and open servopress handgun
several times and check adjustment.
4. Open servopress handgun completely. In this
position (full throttle) position the stop screw
(see page 6 position 4) of throttle lever (6) with
a long screwdriver (3) so that the distance
between throttle lever and stop screw is
approx. 1 mm.
The throttle lever must move freely.
5. Finally seal adjusting screw (1) and stop
screw with safety paint.
Adjustment full-load r.p.m.
1 Adjusting screw
2 r.p.m. tester
3 long screw driver
4 Throttle lever

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InternationalServiceInformation
International Service Information
June 24th, 1999
HD 1050 B
New Unit Information
Troubleshooting
Problem Remedy
Engine does not start. Check gaseoline system / clean if required.
Check spark plug / replace if required.
Check oil level and oil level sensor.
Check ignition system / adjust if required.
Engine r.p.m. fluctuates. Check air filter / clean / replace if required.
Eliminate any leakage in the high-pressure system:
handgun, high-pressure hose, cleaning agent system,
non-returnvalve, overflow valve and ball valve seat.
Low operating pressure and flow
rate Check high-pressure nozzle / replace if required. Check water inlet filter / clean if required.
Check engine speed / adjust if required.
Check spring at overflow valve / adjust if required.
Eliminate any leakage in the high-pressure system (as
mentioned above).
Replace suction and pressure valves.
Replace high and low-pressure seals.
Pump does not draw in cleaning
agent. Clean cleaning agent system and eliminate leakage. High-pressure hose is too long or its diameter too small.
Note:
Cleaning agent is only drawn in during full load.
Replace injectors:
- Unscrew front injector as much as possible.
- Then slowly pull through hand start rope.
While doing so, engine must not start.
- The resulting pump pressure pushes both
injectors out of the high-pressure outlet.

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InternationalServiceInformation
International Service Information
June 24th, 1999
HD 1050 B
New Unit Information
.
Technical data
Special tools
Shut-offvalve 4.580-034
Testing pressuregauge 4.742-025
r.p.m.counter 6.803-012 digitalversion
6.491-361 mechanicalversion
The technical data sheet is on the next edition of the spare parts CD-ROM (DISIS) and in the
Intranet (KMN), folder: "Central / Service Info Int'l / Technical Data".
Further operating handbooks and spare parts lists can be ordered with the corresponding part
number from our Spare Parts Department.
unit technical
data circuit diagram operating handbook maintenance booklet spare parts list
HD 1050 B
Engine: Honda GX 390 1.810-987 - 5.956-933 - 5.958-206