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Triplex Ceramic
Plunger Pump
Operating Instructions/
Repair and Service
Manual
Models
LP122A Series/LP123
For Models
LP122A
LP122A-3100
LP122A-4000
LP123
Contents:
Installation Instructions: page 2
Pump Specifications: page 3
Exploded View: page 4
Parts List: page 5
Kit List/Torque
Specifications: page 6
Trouble Shooting: page 7
Repair Instructions: pages 8-10
Dimensions: page 11
Updated 6/00
Warranty Information: back page
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INSTALLATION INSTRUCTIONS Installation of the Giant Industries, Inc., pump is not a 4. Use of a dampener is necessary to minimize pulsation at complicated procedure, but there are some basic steps drive elements, plumbing, connections, and other system common to all pumps. The following information is to areas. The use of a dampener with Giant Industries, Inc. be considered as a general outline for installation. If pumps is optional, although recommended by Giant you have unique requirements
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Specifications Models LP122A Series/LP123 Volume ............................................................................................... Up to 39.0 GPM (147.6 l/m) Discharge Pressure ........................................................................... Up to 2000* PSI (138* Bar) Inlet Pressure..................................................................................... Up to 90 PSI (6.2 Bar) Speed .............................................................................
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31 (LP122A and LP122A-4000) LP123 LP122A-3100 *LP122A-3100 Only! Exploded View - LP122A Series/LP123 * * 4
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LP122A SERIES/LP123 PARTS LIST A = LP122A B = LP123 C = LP122-4000 D = LP122A-3100 ITEM PART NO. DESCRIPTION QTY. ITEM PART NO. DESCRIPTION QTY. 1 07759 Crankcase 1 35A 07740 O-Ring, (A, B, C) 3 2 13000 Oil Filler Plug 1 35A 06619 O-Ring, (D) 3 4 06085 Crankcase Cover 1 36 13415 V-Sleeve, Weep 3 5 07104 O-Ring 1 36A 13416 Pressure Ring, Weep, (A, B, C) 3 6 07186 Oil Sight Glass W/Gasket 1 36A 13416-0100 Pressure Ring, (D) 3 8 06086 Oil Dipstick 1 39 0774
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LP122A SERIES/LP123 PUMP REPAIR KITS Plunger Packing Kit Valve Assembly Kit # 09135 LP122A. LP123, LP122A-4000 (for pumps manufatured before 4/98) #09136 Qty. Part # Description Qty. Part # Description 3 07740 O-ring 3 07751 Valve Assembly, Complete 6 07741 V-Sleeve, Weep 3 12055 O-Ring 6 07745 V-Sleeve 3 07653 O-Ring Plunger Packing Kit Valve Assembly Kit # 09477 LP122A-3100 (for pumps manufatured after 3/98) #09305 Qty. Part # Description Qty. Part # Description 3 07740 O-ring 3 07751-0100 Val
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PUMP SYSTEM MALFUNCTION CAUSE REMEDY MALFUNCTION Worn packing seals Replace packing seals The Pressure and/or Broken valve spring the Delivery Drops Replace spring Belt slippage Tighten or Replace belt Worn or Damaged nozzle Replace nozzle Fouled discharge valve Clean valve assembly Fouled inlet strainer Clean strainer Worn or Damaged hose Repair/Replace hose Worn or Plugged relief valve on pump Clean, Reset, and Replace worn parts Cavitation Check suction lines on inlet of pump for restrictions
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LP122A Series/LP123 - Repair Instructions 44A 44 45 48 47 1. With a 30mm wrench, re- 2. To disassemble the valve, screw the bolt into the retainer until move the six (6) plugs (48) the valve plate (45) presses the valve seat (44) out of the spring from the valve casing (43). retainer. Examine all parts and replace if necessary. If the seat Inspect the o-rings (48A) doesnt come out, use a valve puller to remove. and replace if necessary. Remove the complete valve assembly (46A) by thread- ing a
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7. For LP122A & LP122A-4000 8. The back-up seal (33) can be 9. The front oil seal (31A) can pumps, oil seal replacement can pried out of the back of the now be removed by inserting a be accomplished by pulling the retainer (32) with a small screw- screwdriver through the rear retainer forward out of the driver. To replace with new seal, of the retainer and tapping the crankcase. The o-ring around lubricate edges of new seal, seal out through the front of the outside of the retainer then squeeze
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36A 36 35 35A 39 12. Lubricate weep seal (36). Place, weep seal (36), and pressure ring (36A) into 13. Place support ring (41) and the seal sleeve (35). Assemble the o-ring (35A) onto seal sleeve and v-sleeves (40) into valve lubricate. casing (43). 7 6 4 2 1 3 8 5 15. Place entire manifold/seal sleeve 14. Press seal sleeve assembly into 16. Tighten hex nuts (49A) in a the manifold and seat firmly. Put assembly over the studs and crosswise pattern (shown push firmly until seated against the sup
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LP122A/LP122A-3100/LP123 DIMENSIONS (mm) LP122A-4000 DIMENSIONS (mm) 11
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GIANT INDUSTRIES LIMITED WARRANTY Giant Industries, Inc. pumps and accessories are warranted by the manufacturer to be free from defects in workmanship and material as follows: 1. For portable pressure washers and self-service car wash applications, the discharge manifolds will never fail, period. If they ever fail, we will replace them free of charge. Our other pump parts, used in portable pressure washers and in car wash applications, are warranted for five years from the dateof shipment for a
