Summary of Contents for K&T 3.532-757.0
- Page 1 For Karcher Pressure Washer Parts Call 606-678-9623 or 606-561-4983 Pump 785 9/28/01 3:06 PM Page 1 Service Handbook High - Pressure Washer Pump 3.532-785.0 10.00 www.mymowerparts.com...
- Page 2 For Karcher Pressure Washer Parts Call 606-678-9623 or 606-561-4983 Pump 785 9/28/01 3:06 PM Page 2 www.mymowerparts.com...
- Page 3 High-Pressure Washer Pump specific problem. If you don't know what the problem is, work your way through the problems listed until you find and correct the Part 3.532-757.0 problem. Special Tools Low Water Pressure ..Section 1 •...
- Page 4 For Karcher Pressure Washer Parts Call 606-678-9623 or 606-561-4983 Pump 785 9/28/01 3:06 PM Page 4 MASTER DIAGRAM 1...Oil reservoir vent cap 2...Oil filter 3...Oil reservoir 4...O-ring 7...Oil bath housing 8...Pump shaft seal 31...Detergent check valve 9...Forward O ring 32...O-ring 33...Ball bearing 5...Oil drain plug ring...
- Page 5 For Karcher Pressure Washer Parts Call 606-678-9623 or 606-561-4983 Pump 785 9/28/01 3:06 PM Page 5 KARCHER OVERVIEW Swash Plate Assembly The three pistons (13) are driven by the swash plate assembly (10), which is mounted to the engine shaft. In the case of a vertically configured machine, a drive bolt is screwed into the engine shaft and When the piston (13) is pushed forward by the swash assembly (10), then inserted into the pump shaft.
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Page 6: Part Numbers
For Karcher Pressure Washer Parts Call 606-678-9623 or 606-561-4983 Pump 785 9/28/01 3:06 PM Page 6 KARCHER OVERVIEW negative pressure, and no detergent can be drawn into the unit. away from the O-ring, against the tension of the spring. Detergent can then be drawn into the unit. -
Page 7: Section 1 / Low Water Pressure
For Karcher Pressure Washer Parts Call 606-678-9623 or 606-561-4983 Pump 785 9/28/01 3:06 PM Page 7 SECTION 1 / LOW WATER PRESSURE 1...Oil reservoir vent cap 2...Oil filter 3...Oil reservoir 4...O-ring 7...Oil bath housing 8...Pump shaft seal 31...Detergent check valve 9...Forward O ring 32...O-ring 33...Ball bearing... - Page 8 For Karcher Pressure Washer Parts Call 606-678-9623 or 606-561-4983 Pump 785 9/28/01 3:06 PM Page 8 SECTION 1 / LOW WATER PRESSURE SOLUTIONS 2. Remove brass bushing. (figure 3) Note that bushing is positioned with large side down. A. Water Supply B.
- Page 9 For Karcher Pressure Washer Parts Call 606-678-9623 or 606-561-4983 Pump 785 9/28/01 3:06 PM Page 9 F. Low-pressure Check Valve SECTION 1 / WATER PRESSURE SOLUTIONS 1. Remove water inlet housing with torx TX30 bit (5 bolts). (figure 6) F. Low-Pressure Check Valve G.
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Page 10: Section 2 / Water Leaks
For Karcher Pressure Washer Parts Call 606-678-9623 or 606-561-4983 Pump 785 9/28/01 3:06 PM Page 10 SECTION 2 / WATER LEAKS 1...Oil reservoir vent cap 2...Oil filter 3...Oil reservoir 4...O-ring 7...Oil bath housing 8...Pump shaft seal 31...Detergent check valve 9...Forward O ring 32...O-ring 33...Ball bearing 5...Oil drain... - Page 11 For Karcher Pressure Washer Parts Call 606-678-9623 or 606-561-4983 Pump 785 9/28/01 3:06 PM Page 11 SECTION 2 / WATER LEAK SOLUTIONS A. Thermal Relief Valve B. weep holes – High-Pressure Seals A. Thermal Relief Valve C. weep holes – Low-Pressure Seals 1.
- Page 12 For Karcher Pressure Washer Parts Call 606-678-9623 or 606-561-4983 Pump 785 9/28/01 3:06 PM Page 12 SECTION 2 / WATER LEAK SOLUTIONS C. weep holes – Low Pressure Seals C. weep holes - Low-Pressure Seals Scraper Ring Washer Bushing Seal Circulation Holes figure 19...
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Page 13: Section 3 / Oil Leaks
For Karcher Pressure Washer Parts Call 606-678-9623 or 606-561-4983 Pump 785 9/28/01 3:06 PM Page 13 SECTION 3 / OIL LEAKS 1...Oil reservoir vent cap 2...Oil filter 3...Oil reservoir 4...O-ring 7...Oil bath housing 8...Pump shaft seal 31...Detergent check valve 9...Forward O ring 32...O-ring 33...Ball bearing 5...Oil drain... - Page 14 For Karcher Pressure Washer Parts Call 606-678-9623 or 606-561-4983 Pump 785 9/28/01 3:06 PM Page 14 SECTION 3 / OIL LEAK SOLUTIONS A. Drain Plug B. Oil Reservoir C. weep holes / Oil Seals A. Drain Plug (figure 20) C. weep holes – Oil Seals 1.
- Page 15 For Karcher Pressure Washer Parts Call 606-678-9623 or 606-561-4983 Pump 785 9/28/01 3:06 PM Page 15 SECTION 3 / OIL LEAK SOLUTIONS D. weep holes / Oil Seals E. Pump Shaft Seal Forward O-ring figure 25 figure 23 • Soak new oil seals in water 3.
- Page 16 For Karcher Pressure Washer Parts Call 606-678-9623 or 606-561-4983 Pump 785 9/28/01 3:06 PM Page 16 SECTION 4 / DETERGENT DELIVERY FAILURE 1...Oil reservoir vent cap 2...Oil filter 3...Oil reservoir 4...O-ring 7...Oil bath housing 8...Pump shaft seal 31...Detergent check valve 9...Forward O ring 32...O-ring 33...Ball bearing...
- Page 17 For Karcher Pressure Washer Parts Call 606-678-9623 or 606-561-4983 Pump 785 9/28/01 3:06 PM Page 17 SECTION 4 / DETERGENT DELIVERY FAILURE SOLUTIONS A. Pump Not Drawing Detergent or Water Exiting from Detergent Tube B. Nozzle Insert A. Pump Not Drawing Detergent or Water Exiting Detergent Tube figure 29 figure 27...