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Warning denotes that a potential hazard exists and

indicates procedures that must be followed exactly

to either eliminate or reduce the hazard, and to

avoid serious personal injury, or prevent future

safety problems with the product.

Danger is used to indicate the presence of a hazard

that will result in severe personal injury, death, or

property damage if the notice is ignored.

Hydraulically-Driven Pressure Washer 

Models 1802C, 1803C, 1804C, 1805C, 1806C, 

1807C, 1824C, 1825C, 1826C and 1827C

Form L-0560PW

General Safety Information

Notes are used to notify of installation, operation, or

maintenance information that is important but not

safety related.

Caution is used to indicate the presence of a hazard,

which will or can cause minor injury or property

damage if the notice is ignored.

Do not pump flammable or explosive fluids such as

gasoline, fuel oil, kerosene, etc.  Do not use in

explosive atmospheres unless the Pump is

properly grounded and the proper drive is used.

The Pump should only be used with liquids

compatible with the Pump materials.  Failure to

follow this notice can result in severe personal

injury and/or property damage and will void the

product warranty.

The sound pressure level of the Pump may exceed

80dBA.  Observe all safety precautions when

operating the Pump within close proximity for

extended periods by wearing hearing protectors.

Extended exposure to elevated sound levels will

result in permanent loss of hearing acuteness,

tinnitus, tiredness, stress, and other effects such as

loss of balance and awareness.

1803C

3.0

1000

5.0

1300

Forged Brass Head Triplex Pump with 

28 lbs.

hydraulic motor, adjustable unloader, gauge,

1

2

"

NPT input, 

3

8

"

quick disconnect output

1805C

3.0

1500

8.0

1900

Forged Brass Head Triplex Pumps with 

26 lbs.

1807C

3.0

2000

11.0

1300

hydraulic motor, chemical injector,

26 lbs.

1825C

4.0

1500

8.5

2000

adjustable unloader, gauge, 

3

4

" GH input,

33 lbs.

1827C

4.0

2000

8.5

2000

3

8

"

quick disconnect output

33 lbs.

Hydraulically-Driven Pressure Washers

Model

Max.

Max.

Estimated

Number

GPM

PSI

GPM

PSI

Description

Weight Ea.

Hydraulic Motor 

Requirements

1802C

3.0

1000

5.0

1300

Forged Brass Head Triplex Pump 

38 lbs.

with hydraulic motor, adjustable unloader, 

gauge, 

1

2

"

NPT input,

3

8

"

quick disconnect output,

and 50 ft. hose and gun assembly

1804C

3.0

1500

8.0

1900

Forged Brass Head Triplex Pumps with hydraulic 

41 lbs.

1806C

3.0

2000

11.0

1300

motor, chemical injector, adjustable unloader,

26 lbs.

1824C

4.0

1500

8.5

2000

gauge 

3

4

"

GH input, 

3

8

"

quick disconnect output, 

49 lbs.

1826C

4.0

2000

8.5

2000

and 50 ft. hose and gun assembly

49 lbs.

Hydraulically-Driven Pressure Washers with Hose and Gun Assembly

Model

Max.

Max.

Estimated

Number

GPM

PSI

GPM

PSI

Description

Weight Ea.

Hydraulic Motor 

Requirements

Installation, Operation, Repair, and Parts Manual

02/08

Description

 

Summary of Contents for 1802C

Page 1: ...ximity for extended periods by wearing hearing protectors Extended exposure to elevated sound levels will result in permanent loss of hearing acuteness tinnitus tiredness stress and other effects such as loss of balance and awareness 1803C 3 0 1000 5 0 1300 Forged Brass Head Triplex Pump with 28 lbs hydraulic motor adjustable unloader gauge 1 2 NPT input 3 8 quick disconnect output 1805C 3 0 1500 ...

Page 2: ... the system before servicing Secure the discharge line before starting the pump An unsecured discharge line may whip resulting in personal injury and or property damage Check all hoses for weak or worn condition before each use Make certain that all connections are tight and secure Periodically inspect the pump and the system components Perform routine maintenance as required Use only pipe hose an...

Page 3: ... black outer body clockwise CW or counterclockwise CCW 6 Your Pressure Washer is equipped with the optional Detergent Injection System The nozzle must be set in Low Pressure Mode to activate the injector and draw soap For rinsing the nozzle should be set in High Pressure Mode Pushing the black nozzle body forward places the nozzle in the Low Pressure Mode Pulling the black nozzle body back places ...

Page 4: ...pump to compensate by varying the Pump flow Do not bypass oil Use a Flow Control at the Motor Inlet to control the flow and speed of the motor Hydraulic Oil The specifications for the Hydraulic Driven Pressure Washer where compiled using Mobil DTE 26 hydraulic oil at a temperature of 140 F 60 C Using other type of oil and different temperatures will result in different flow requirements to replica...

Page 5: ...rews securing the pump head to the pump body See Figure 3 2 While turning the crankshaft use two screwdrivers to carefully pry between the pump head and pump body to remove the pump head See Figure 4 3 Using Extractor Pliers remove the Seal Retainers and Seals See Figure 7 4 Using a small blade knife remove the Seals from the Seal Retainers 5 Figure 5 Figure 6 5 Lightly lubricate and install new s...

Page 6: ...contamination of parts 1 Place the Hydraulic Motor in a vise See Figure 11 2 Using a large crescent or 1 1 16 box wrench loosen but do not remove the Tank Port Adapter and Pressure Port Adapter See Figure 11 3 Using a 9 16 box wrench loosen the Nut on the Bypass Adjusting Screw See Figure 11 4 Using a small screwdriver remove the Bypass Adjusting Screw from the Hydraulic Motor This will remove the...

Page 7: ...taining ring cannot be easily removed place the motor body on the arbor press support fixture with the ball bearing side up Gently press against the shaft to relieve pressure of the ball bearing pressing against the internal retaining ring 3 Place the body in the support fixture and position it on the arbor press then press the Shaft Assembly out of the Motor Body See Figure 15 Figure 14 Figure 15...

Page 8: ...rge end of the Shaft slide the Seal over the smaller end of the Shaft and gently push it onto the large end of the Shaft until it is seated against the Seal Spacer See Figures 19 20 Shaft Bearing Installation Figure 18 Shaft Ball Bearing Seal Spacer Seal Shaft Figure 20 Shaft Shaft Seal Seal Figure 19 Shaft Large Retaining Ring Thrust Bearing and Races Seal Spacer 1 Install the Spacer Ring and Bal...

Page 9: ...outer portion of the Gerotor making sure the Gerotor is centered within the O ring groove in the Motor Body See Figure 25 5 Lightly lubricate the area between the inner and outer Gerotor and Gerotor Housing with hydraulic or mineral oil 6 Install the Gerotor Housing making sure the Pins in the Gerotor Housing line up with their respective holes in the Motor Body 7 Coat the new O ring with a thin f...

Page 10: ... d A s s a p y B e h t n r u T c i l u a r d y H e h t f o e d i s e h t n o d e t a c o l s i t u p t u o d e r i s e d e h t l i t n u e s i w k c o l c r o t o M d e n i a t t a n i d e l l a t s n i n e e b s a h e c i f i r O g n i r e t e M r e p o r p m I t r o P e r u s s e r P e h t e c i f i r O g n i r e t e M e z i s r e p o r p e h t l l a t s n I l l a m s o o t s i e z i s e s o H c...

Page 11: ...11 Typical Hydraulic Circuit Schematics for Hydraulic Driven Pressure Washers Figure 27 Typical Hydraulic Circuit Schematics for Hydraulic Driven Pressure Washers ...

Page 12: ...12 Mounting Dimensions Figure 28 Mounting Dimensions ...

Page 13: ...her 3 262 3500 0061 Piston 3 272 9910 480480 O ring 3 282 9910 1260091 Spacer 3 29 9910 1260070 Guiding Piston 3 30 9910 1260080 Piston Pin 3 Ref No Part No Description Qty 31 9910 1260760 Socket Head Cap Screw 6 32 9910 1269101 Complete Cover 1 36 9910 1260060 Connecting Rod Aluminum 3 36 9910 1320140 Connecting Rod Bronze 1806C 1807C 1 373 9910 1260040 Gasket 1 38 9910 740290 O ring 2 39 9910 19...

Page 14: ...Denotes Piston Kit item 9910 KIT2746 3 Denotes Oil Seal Kit item 9910 KIT2787 4 Denotes Water Seal Kit item 9910 KIT2747 5 Denotes Support Ring Kit item 9910 KIT2745 Ref No Part No Description Qty 25 9910 1260110 Nut 3 26 9910 1380141 Base 2 27 9910 740290 O ring 2 28 9910 1980740 Plug 2 29 9910 1260470 Screw 4 303 9910 1260460 Seal 3 31 9910 1780120 Rear Piston Guide 3 324 9910 770260 O ring 3 33...

Page 15: ...lunger Retainer 1 5 2404 0016 Plunger 1 61 Cup 1 7 1400 0020 Sleeve 1 81 Cup 1 9 0117 3390 Valve Body 1 10 3260 0037 Bypass Poppet 1 11 1830 0140 Bypass Seal Outlet 1 12 1720 0004 O ring 1 13 2404 0164 Bypass Adapter 1 14 1600 0041 Poppet Pin 1 151 O ring 1 16 3260 0048 Check Valve Poppet 1 17 1900 0123 Check Valve Spring 1 18 1830 0115 Poppet Retainer 1 19 1720 0004 O ring 1 20 1720 0064 O ring 1...

Page 16: ...tem Washer 1 61 1720 0196 O ring 1 71 1720 0163 O ring 1 81 3210 0080 Valve Seat 1 91 1720 0190 O ring 1 101 3320 0035 Piston 1 111 1900 0161 Spring 1 121 Repair Kit Item O ring 1 131 Repair Kit Item O ring 1 14 9900 38FPB Quick Disconnect Male End 1 15 3430 0483 Bolt Kit Assembly NPT 1 15 3430 0487 Bolt Kit Assembly BSP 1 Figure 32 Unloader Assembly Items 1 2 3 4 5 6 7 8 9 10 11 15 12 13 14 1 Den...

Page 17: ...1 2500 0015C Complete Motor Assy 1 31 25 30 24 23 29 28 27 26 25 22 21 20 19 18 13 17 15 16 14 13 12 9 11 10 8 7 6 5 4 3 2 Figure 33 Hydraulic Motor Exploded View 2500 0015C 1 Ref No Part No Description Qty 1 1820 0013 Retaining Ring Internal 1 2 1810 0014 Retaining Ring External 1 31 2000 0010 Ball Bearing 1 4 1410 0073 Spacer 1 51 2104 0005 Shaft Seal 1 6 1410 0074 Seal Spacer 1 7 2029 0014 Thru...

Page 18: ...807C 1824C 1825C 1826C 1827C 1 Figure 34 Hydraulic Motor Exploded View 2500 0020C 2 3 4 5 6 7 8 10 11 9 12 13 14 16 15 17 13 18 19 20 21 22 25 26 27 28 29 23 24 30 25 31 Ref No Part No Description Qty 16 1600 0052 Dowel Pin 1 17 3900 0024 Gerotor HM3C 1 18 0251 2500C2 Motor End Plate Main Brg 1 19 3220 0029 Bypass Adjusting Screw 1 201 1700 0047 Gasket 1 211 2270 0027 Washer 1 22 2250 0038 Lock Nu...

Page 19: ...t Item Retainer 1 13 3210 0081 Seat 3381 0018 1 13 3210 0083 Seat 3381 0018 Std 1 14 1720 0163 O ring 1 15 Repair Kit Item Ball 1 16 Repair Kit Item Spring 1 17 Repair Kit Item O ring 1 18 Repair Kit Item Retainer 1 19 2270 0068 Seal Washer 2 20 2404 0223 Tube Inlet 1 21 2404 0224 Tube Adapter 1 22 2200 0038 Screw 7 Figure 36 Gun Replacement Components 5 3 2 2 4 1 21 19 20 19 2 14 16 18 17 15 13 1...

Page 20: ...or warranty consideration Hypro reserves the right to request a Material Safety Data sheet from the Purchaser for any pump or product Hypro deems necessary Hypro reserves the right to disposition as scrap pumps or products returned which contain unknown substances or to charge for any and all costs incurred for chemical testing and proper disposal of components containing unknown substances Hypro ...

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