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51

Landa PGDC Operator’s Manual  8.916-596.0 - P

VRT3 Unloader

Unloader Adjustment Procedures

1. Remove lock nut (Item 19).

2. Remove adjustment knob (Item 18).

3. Loosen the two (2) nuts (Item 15), move them upward on stem (Item 8) until you see 4 or more threads below
the nut.

4. Re-attach adjusting knob (Item 18).

5. Start machine. Open the trigger of the spray gun. Increase pressure by turning adjustment knob (Item 18)
clockwise until pressure is at the desired operating pressure.

6. Remove the adjustment knob (Item 18), tighten the lower nut (Item 15) tightly against the upper nut (Item 15).
Re-attach adjustment knob (Item 18) and screw down until contact is made with the nuts (Items 15). Screw
down lock nut (Item 19) onto the stem (Item 8) until the threads cut into the nylon insert of the lock nut 
(Item19).

*

If adjustment knob (Item 18) 

DOES NOT 

make contact with upper nut (Items 15), remove adjusting knob (Item

18), re-adjust (raise) nuts (Items 15) on stem (Item 8) and re-attach adjustment knob (Item 18), then repeat
step #6.

**

If adjustment knob (Item 18) 

DOES 

make contact with upper nut; release the trigger of the spray gun and

watch the pressure gauge for the pressure increase (“spike”). This “spike” 

SHOULD NOT 

exceed 500 psi

above the operating pressure. If “spike” pressure exceeds the 500 psi limit, remove the adjusting knob (Item
18) and re-adjust (lower) the nuts (Items 15) on the stem (Item 8). Re-attach the adjusting knob (Item 18), then
repeat step #6.

Summary of Contents for PGDC Series

Page 1: ...ation about this regulation www P65Warnings ca gov 8 916 596 0 P 08 16 17 PGDC Hot Water Gasoline Powered Diesel Oil Heated Operator s Manual Pressure Washer GAS 8 916 274 0 DIE SEL 8 932 960 0 MODELS...

Page 2: ...2 Landa PGDC Operator s Manual 8 916 596 0 P Machine Data Label...

Page 3: ...ques 12 Shutting Down And Clean up 13 Maintenance Storage 14 Engine Maintenance 14 Landa Sure Fire Oil Burner 17 Troubleshooting 18 Preventative Maintenance 22 Maintenance Schedule 22 Oil Change Recor...

Page 4: ...f the machine The MAINTENANCE section contains preventive main tenance to keep the machine and its components in good working condition They are listed in this general order Storage Engine Maintenance...

Page 5: ...e operator in the operator s native language by the purchaser owner making sure that the operator comprehends its contents Owner and or user must study and maintain for future reference the manufactur...

Page 6: ...NG Do not use gasoline crankcase draining or oil containing gasoline solvents or alcohol Doing so will result in fire and or explosion WARNING Risk of fire Do not Spray flammable liquids 7 Allow engin...

Page 7: ...l result WARNING Protect machine from freezing 16 To keep machine in best operating conditions it is important you protect machine from freezing Failure to protect machine from freezing could cause ma...

Page 8: ...ve pressure Failure to properly cool down or maintain the heating coil may result in a steam explosion 26 Do not overreach or stand on unstable support Keep good footing and balance at all times 27 Do...

Page 9: ...uded High Pressure Hose Fuel Oil Tank Variable Pressure Control Wand Handle Variable Pressure Control Wand Nozzle Engine Switch Spray Gun Nozzle Quick Coupler Discharge Nipple Rupture Disk Gasoline Ta...

Page 10: ...6 Install proper battery making sure that the red cable is attached to the positive terminal Use a 12V Group 24 battery on all models except 4 40321 and 5 35321E These models use a U1 30 amp garden t...

Page 11: ...ch to the START position and hold it there until the engine starts NOTE Do not use the electric starter for more than five seconds at a time If the engine fails to start release the switch and wait te...

Page 12: ...p by discharging the warm water onto the ground This thermal device prevents internal damage to the pump Cleaning Tips Pre rinse cleaning surface with fresh water Place detergent suction tube directly...

Page 13: ...inute STEP 4 Squeeze trigger on spray gun to relieve remaining pressure STEP 2 Turn burner switch off and continue spraying allowing the water to cool to below 100 F STEP 5 Remove water supply hose ST...

Page 14: ...le ice from pressure washer hoses spray gun or wand Engine Maintenance During the winter months rare atmospheric conditions may develop which will cause an icing condition in the carburetor If this de...

Page 15: ...ls Oil level should be checked through use of dipstick found on top of pump or the red dot visible through the oil gauge window Oil should be maintained at that level Cleaning of Coils In alkaline wat...

Page 16: ...ctions properly This can be done by operating the machine and checking to see that when the trigger on the spray gun is in the off position the burner is not firing Fuel Pressure Adjustment To adjust...

Page 17: ...hose from pump to inlet side of the coil 2 Carefully disconnect thermostat sensor from electrical connection 3 Remove all the fittings from the inlet and discharge side of coil 4 Remove the burner as...

Page 18: ...engine RPM Set engine speed at proper specifications Pump sucking air Check water supply and possibility of air seepage Valves sticking Check and clean or replace if necessary Unloader valve seat fau...

Page 19: ...sary Pump sucking air Check water supply and air seepage at joints in suction line Worn piston packing Check and replace if necessary MACHINE SMOKES WHILE BURNER UNIT IS RUNNING OR UNIT SMOKES AT COLD...

Page 20: ...place Incorrect fuel nozzle size See specifications for proper fuel nozzle Insufficient water supplied Check water G P M to machine Restricted water flow Check nozzle for obstruction proper size PUMP...

Page 21: ...etergent line s Repair hole Low detergent level Add detergent if needed PUMP RUNNING NORMALLY BUT PRESSURE LOW ON INSTALLATION Pump sucking air Check water supply and possibility of air seepage Valves...

Page 22: ...nce of your equipment Contact your Landa dealer for maintenance Regular preventative maintenance will add many hours to the life of your pressure washer Perform maintenance more often under severe con...

Page 23: ...e pump oil after first 50 hours and every year or 500 hours thereafter Use SAE 10W 40 non foaming oil DateOilChanged Month Day Year Estimated Operating Hours Since Last Oil Change DateOilChanged Month...

Page 24: ...24 Notes Landa PGDC Operator s Manual 8 916 596 0 P...

Page 25: ...25 Parts Parts LANDA PGDC PGDC4 3500 1 110 049 0 PGDC5 3500 1 110 050 0 PGDC5 3500 1 110 051 0 PGDC8 3000 1 110 072 0 Landa PGDC Operator s Manual 8 916 596 0 P...

Page 26: ...N I N G To Tank 66 84 9 58 65 81 33 5 78 61 4 59 54 60 55 72 36 37 42 1 2 35 21 20 19 24 76 74 12 8 50 51 43 93 44 73 67 68 69 70 82 32 29 26 86 28 31 27 93 16 14 11 93 6 7 53 23 76 15 10 24 4 4 3 7...

Page 27: ...1 0 13 8 706 727 0 1 BUSHING 5 16 SNAP LOK 14 8 918 426 0 1 HOSE 3 8 X 32 2 WIRE PRESSURE LO 1 110 049 0 1 110 050 0 1 110 051 0 8 918 227 0 1 HOSE 1 2 X 36 2 WIRE PRESSURE LO 1 110 072 0 15 8 918 425...

Page 28: ...525 0 2 LOCKNUT 1 2 8463 53 8 916 619 0 1 PANEL PGDC 54 9 802 428 0 30 CORD SERVICE SJOWA 12 3 55 9 802 765 0 4 SCREW 1 4 X 1 2 56 8 932 968 0 1 LABEL INTENDED FOR OUTDOOR USE USA 57 9 802 146 0 1 SW...

Page 29: ...1 110 072 0 76 9 802 771 0 5 SCREW 10 32 X 3 4 77 9 802 203 0 1 CLAMP 1 2 RO CLIP 78 8 921 147 0 1 STRAP FUEL TANK DOUBLE 16HP 20HP MODELS 79 8 940 051 0 1 LABEL LANDA DIESEL OP INST 80 9 800 708 0 2...

Page 30: ...R Y P R E C A U C I O N A V E R T I S S E M E N T W A R N I N G ROUTING CHA UD 4 14 17 1 3 18 13 26 24 34 36 32 28 35 37 20 29 31 23 38 33 22 47 46 54 56 52 48 55 57 49 41 59 50 51 43 53 42 41 8 39 4...

Page 31: ...OIL DRAIN HONDA 1 110 049 0 17 9 802 779 0 2 NUT 3 8 18 9 802 807 0 8 WASHER FLAT 3 8 19 9 802 959 0 1 KEY 0 247 SQR X 2 125 20 8 912 457 0 1 WLMT BELT GUARD GAS PUMP 1 110 050 0 1 110 051 0 8 922 994...

Page 32: ...6 0 4 BOLT 5 16 X 2 NC HH 1 110 050 0 51 9 802 776 0 4 NUT 5 16 ESNA NC 1 110 050 0 52 8 718 980 0 4 WASHER 5 16 FLAT SAE 1 110 050 0 53 9 802 672 0 1 MUFFLER EXHAUST BRIGGS 1 110 050 0 54 9 802 867 0...

Page 33: ...IGHT INDICATOR GREEN 12V 6 9 802 470 0 1 RELAY 12V 1 110 049 0 HONDA 1 110 050 0 VAN 9 802 471 0 1 24V RELAY 1 110 051 0 HONDA 7 9 802 695 0 1 NUT 10 32 KEPS 8 9 802 771 0 1 SCREW 10 32 X 3 4 9 9 802...

Page 34: ...34 Coil 1 2 5 6 27 3 4 7 21 20 8 17 24 23 18 9 13 22 14 11 12 15 19 16 7 12 10 25 26 TR Trailer 28 29 Landa PGDC Operator s Manual 8 916 596 0 P...

Page 35: ...INSULATION RETAINER PLATE 13 9 802 797 0 8 SCREW SS 10 X 1 2 HEX HEAD TEK 14 8 912 239 0 1 COIL LANDA DURA SCH 80 W ALUMINIZED STEEL WRAP 15 9 149 003 0 1 MANIFOLD COIL OUTLET 16 9 802 043 0 1 ELBOW...

Page 36: ...36 Option Float Tank Landa PGDC Operator s Manual 8 916 596 0 P 11 12 1 2 7 4 3 5 6 10 9 13 8 14 16 15 17 18 16 8 5 20 22 24 21 23 27 19 27 27 25 26 28...

Page 37: ...DED 1 4 X 5 11 9 802 768 0 1 SCREW 3 8 X 1 1 4 WHIZ 12 9 802 767 0 2 SCREW 3 8 X 3 4 WHIZ 13 9 802 781 0 1 NUT 3 8 FLANGE WHIZ LOC 14 9 802 771 0 2 SCREW 10 32 X 3 4 15 9 802 695 0 2 NUT 10 32 KEPS 16...

Page 38: ...072 0 4 8 711 293 0 1 WAND UP ZNC AL 344 W CPLR W SOAP NOZZLE 83 SSVPKIT 1 REPAIR KIT AL STAINLESS STEEL 5 9 802 165 0 1 COUPLER 1 4 MALE NOT SHOWN 9 802 096 0 1 O RING REPLACEMENT ONLY NOT SHOWN 6 9...

Page 39: ...4 5 8 D SS 2 9 802 254 0 5 HOSE 1 4 PUSH ON 3 8 706 941 0 1 HOSE BARB 1 4 BARB X 1 4 ML 4 8 709 152 0 1 FILTER DIESEL FUEL DISPOSABLE 5 BURNER ASSEMBLY SEE SPECIFICATIONS PAGE 6 9 802 519 0 1 STRAIN R...

Page 40: ...2 JIC FEM 3 8 MAL 4 9 802 036 0 2 NIPPLE 1 2 JIC 3 8 PIPE 5 9 802 129 0 1 ELBOW 1 2 JIC X 3 8 90 6 8 750 299 0 1 UNLOADER VRT 3 8 GPM 4500 PSI 7 8 933 006 0 1 SWITCH FLOW MV60 8 8 705 974 0 1 NIPPLE 3...

Page 41: ...PLE 3 8 HEX STEEL P N C3069X6 4 8 706 171 0 1 ELBOW 1 2 MPT X 3 8 FPT STREET STEEL 5 9 802 048 0 1 SWIVEL 1 2 JIC FPT 3 8 MPT STEEL 6 9 802 038 0 1 NIPPLE 1 2 JIC X 3 8 MPT STEEL 7 9 802 869 0 1 BLOCK...

Page 42: ...IPPLE 1 2 X 1 2 MPT PIPE 7 9 802 039 0 1 ELBOW 1 2 JIC X 3 8 MPT 8 9 802 132 0 1 ELBOW 3 4 JIC X 1 2 90 8 706 902 0 1 NIPPLE 3 4 JIC X 1 2 PIPE TR3500 6000 OPTION 9 9 802 127 0 1 NIPPLE 1 2 JIC X 3 8...

Page 43: ...110 049 0 Honda GX390 389cc 8 750 579 0 2BK32H 9 802 381 0 Hx1 9 802 399 0 1 110 050 0 Briggs Vanguard 570cc 8 754 819 0 2BK32H 9 802 381 0 P2x1 9 802 404 0 1 110 051 0 Honda GX630 688cc 8 752 149 0...

Page 44: ...596 0 P Replacement Parts For best performance specify genuine KNA replacement parts 28 36 36 1 1 31 36 47 30 16 15 22 33 33 40 17 14 3 27 5 5 48 45 49 29 46 39 39 7 7 8 9 2 38 32 36 4 44 6 36 36 12 1...

Page 45: ...VALVE 11 8 750 547 0 1 CONNECTOR 37 FLARE X 1 8 NPT LONG 12 8 750 545 0 1 CONNECTOR 37 FLARE X 1 8 NPT 13 8 749 000 0 1 FUEL LINE ASSEMBLY 14 8 752 034 0 1 FLANGE KNA BURNER 1 TUBE 15 8 752 035 0 1 FL...

Page 46: ...1 RING PUSH ON INTERNAL 1305 112 33 8 733 001 0 2 SCREW 8 X 1 4 HI LOW THREAD CUT PPH 34 8 718 762 0 2 SCREW 8 32 X 1 2 M PH RDH PL 35 9 807 345 0 1 LABEL IGNITER 120V 9 807 346 0 1 LABEL IGNITER 230V...

Page 47: ...IAL PLATE 45 8 750 830 0 1 PLUG HOLE 0 285 PLASTIC 46 9 807 339 0 1 LABEL WIRING DIAGRAM BURNER 115V 115V 9 807 340 0 1 LABEL WIRING DIAGRAM BURNER 230V 230V 9 807 341 0 1 LABEL WIRING DIAGRAM BURNER...

Page 48: ...0 1 COPPER WASHER 1 2 10 8 753 816 0 1 MANIFOLD HOUSING 11 9 804 498 0 6 O RING 2 62 X 25 1 SEE KITS TABLE 12 6 VALVE ASSEMBLY SEE KITS TABLE 13 9 803 193 0 6 O RING 3068 SEE KITS TABLE 14 9 802 928...

Page 49: ...SHIM 33 9 803 181 0 1 BEARING HOUSING 34 8 752 841 0 3 PLUNGER BOLT SEE KITS TABLE 35 8 752 820 0 3 BONDED SEAL SEE KITS TABLE 36 8 753 819 0 3 PLUNGER 18MM SEE KITS TABLE 37 8 752 823 0 3 COPPER SPA...

Page 50: ...DER 8 750 709 0 REPAIR KIT VRT3 2320 3630 PSI 8 750 710 0 REPAIR KIT VRT3 4500 PSI KIT ITEMS 3 4 6 9 12 21 24 Landa PGDC Operator s Manual 8 916 596 0 P 8 750 297 0 8 GPM 2320 PSI 8 750 298 0 8 GPM 36...

Page 51: ...8 and screw down until contact is made with the nuts Items 15 Screw down lock nut Item 19 onto the stem Item 8 until the threads cut into the nylon insert of the lock nut Item19 If adjustment knob Ite...

Page 52: ...8 916 596 0 Printed in U S A...

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