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Model
P450-5121
Triplex Ceramic Plunger Pump
Operating Instructions
Repair and Service Manual
Contents:
Installation Instructions:
Specifications:
Exploded View
Parts List / Kits
Repair Instructions:
Pump mounting selection Guide:
Recommended Spare Parts List:
Torque Specs:
Trouble Shooting:
Dimensions:
Warranty Information
page 2
page 3
page 4
page 5
pages 6-8
page 9
page 9
page 9
page 10
page 11
back page
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Summary of Contents for Giant P450-5121
- Page 1 Model Triplex Ceramic Plunger Pump Operating Instructions Repair and Service Manual P450-5121 Contents: Installation Instructions: page 2 Specifications: page 3 Exploded View page 4 Parts List / Kits page 5 Repair Instructions: pages 6-8 Pump mounting selection Guide: page 9 Recommended Spare Parts List:...
- Page 2 Inc. vals of 500 hours or less depending on operating conditions. 4. Run the pump dry approximately 10 seconds to drain the water before exposure to freezing temperatures. NOTE: Contact Giant Industries for Service School Information. Phone: (419)-531-4600...
- Page 3 Model P450-5121 Specifications U.S. (Metric) Volume ............5.5 GPM .......(20.8 l/m) Discharge Pressure ........5075 PSI .......(350 bar) Inlet Pressure ..........90 PSI ......(6.2 bar) Stroke ............0.79” ......20mm RPM ....................Up to 1450 RPM Plunger Diameter ........0.71” ......18mm Temperature of Pumped Fluids ....160 F ......(70 Inlet Ports ..........
- Page 4 P450-5121 Exploded View...
- Page 5 P450-5121 Parts List ITEM PART DESCRIPTION QTY. ITEM PART DESCRIPTION QTY. 16D 08399-0100 Tensioning Screw 08377 Crankcase 16E 07023-0001 O-Ring 08378 Oil Fill Plug with Gasket 16F 07203 Backup Ring 06479 Crankcase cover 16G 07161-0100 Copper Washer 07186 Oil Sight Glass w/ Gasket 16H 06931 Oil Scraper 08380 O-Ring 06790 Crosshead Pin 07109-0400 Oil Drain Plug...
- Page 6 Repair Instructions - P450-5121 Note: Always take time to lubricate all metal and nonmetal parts with a light film of oil before reassembly. This step will ensure proper fit, at the same time protecting the pump nonmetal parts (i.e., the elastomers) from cutting and scoring. 1) With a socket wrench, 3) By inserting a small screw 2) Using needle nose pli- remove the three dis- driver between the valve ers, remove the inlet and charge valve plugs and seat (27) and the valve...
- Page 7 REASSEMBLY INSTRUCTIONS - P450-5121 IMPORTANT! Care must be taken that glue does not get between the plunger pipe (16B) and plunger base (16A). The plunger pipe should not be strained by eccentric tightening of the tension screw or through damage to front surface of plunger, otherwise it is liable to fracture.
- Page 8 REASSEMBLY INSTRUCTIONS - P450-5121 Gear End If oil leaks where the plunger (16) extends from the crankcase (1), the oil seals (19) and plungers (16) must be examined and replaced if necessary. Remove oil plug (5) and drain oil; remove crankcase cover (3). Remove valve casing (26), and seal case (20). Then remove plunger pipes (16B) and oil...
- Page 9 (see page 5 for kit list) Oil Seal Kit (1 kit/pump) (see page 5 for kit list) Valve Spare Parts (1 kit/pump) (see page 5 for kit list) P450-5121 PUMP TORQUE SPECIFICATIONS Position Item # Description Lubrication Info Torque Amount...
- Page 10 Drop at gun Excessive Worn plungers Replace plungers Leakage Worn packing/seals Adjust or Replace packing seals Excessive vacuum Reduce suction vacuum Cracked plungers Replace plungers Inlet pressure too high Reduce inlet pressure High Crankcase Wrong Grade of oil Giant oil is recommended Temperature Improper amount of oil in crankcase Adjust oil level to proper amount...
- Page 11 P450-5121 Pump Dimensions - Inches (mm)
- Page 12 1. Five (5) years from the date of shipment for all pumps used in portable pressure washers with NON-SALINE, clean water applications. 2. Two (2) years from the date of shipment for Giant pumps used in car wash applications. 3. One (1) year from the date of shipment for all other Giant industrial and consumer pumps.
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