Models Triplex Ceramic Plunger Pump Operating Instructions/ Repair and Service Manual LP122A Series/LP123 For Models LP122A LP122A-3100 LP122A-4000 LP123 Updated 6/00 Contents: Installation Instructions: Pump Specifications: Exploded View: Parts List: Kit List/Torque Specifications: Trouble Shooting: Repair Instructions: Dimensions: Warranty Information: page 2 page 3 page 4 page 5 page 6 page 7 pages 8-10 page 11 back page
INSTALLATION INSTRUCTIONS Installation of the Giant Industries, Inc., pump is not a complicated procedure, but there are some basic steps common to all pumps. The following information is to be considered as a general outline for installation. If you have unique requirements, please contact Giant Industries, Inc. or your local distributor for assistance. 1. The pump should be installed flat on a base to a maximum of a 15 degree angle of inclination to ensure optimum lubrication. 2.
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 ........................................................................................
Exploded View - LP122A Series/LP123 LP123 LP122A-3100 *LP122A-3100 Only! LP122A-4000) 31(LP122A and * * 4
LP122A SERIES/LP123 PARTS LIST A = LP122A ITEM 1 2 4 5 6 8 9 10 10 11 11 12 12 13 13 14 15 16 17 17 20 20A 20B 21 22 23 24 24A 24B 25 28 29A 29B 29C 29C 29D 29D 29E 29E 30 31 31A 31B 32 32A 33 35 35 NOTE: B = LP123 C = LP122-4000 PARTNO. 07759 13000 06085 07104 07186 06086 01009 01010 08093 01011 08094 07109 12137 07110 07182 07111 07112 07113 07114 08095 07116 07117 13001 07118 13242 13243 13340 13277 13278 13341 DESCRIPTION QTY.
LP122A SERIES/LP123 PUMP REPAIR KITS Plunger Packing Kit Valve Assembly Kit # 09135 (for pumps manufatured before 4/98) LP122A. LP123, LP122A-4000 #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 (for pumps manufatured after 3/98) LP122A-3100 #09305 Qty. Part # Description Qty.
PUMP SYSTEM MALFUNCTION MALFUNCTION CAUSE REMEDY The Pressure and/or the Delivery Drops Worn packing seals Broken valve spring Belt slippage Worn or Damaged nozzle Fouled discharge valve Fouled inlet strainer Worn or Damaged hose Worn or Plugged relief valve on pump Cavitation Unloader Replace packing seals Replace spring Tighten or Replace belt Replace nozzle Clean valve assembly Clean strainer Repair/Replace hose Clean,Reset,andReplacewornparts Check suction lines on inlet of pump for restrictions Ch
LP122A Series/LP123 - Repair Instructions 44A 1. With a 30mm wrench, remove the six (6) plugs (48) from the valve casing (43). Inspect the o-rings (48A) and replace if necessary. Remove the complete valve assembly (46A) by threading a 12mm bolt into the spring retainer and pulling straight out. 5. If there are signs of oil leaking through the plunger oil seals, then replacment is neccessary.For LP122A & LP122A-4000, remove the plunger pipe (29B) before inspecting oil seals (31A & 33).
7. For LP122A & LP122A-4000 pumps, oil seal replacement can be accomplished by pulling the retainer forward out of the crankcase. The o-ring around the outside of the retainer should be replaced and lubricated with a light film of oil. 8. The back-up seal (33) can be pried out of the back of the retainer (32) with a small screwdriver. To replace with new seal, lubricate edges of new seal, then squeeze outside edges of seal, forcing the seal to collapse into a figure 8.
36A 36 35 35A 39 12. Lubricate weep seal (36). Place, weep seal (36), and pressure ring (36A) into the seal sleeve (35). Assemble the o-ring (35A) onto seal sleeve and lubricate. 14. Press seal sleeve assembly into the manifold and seat firmly. Put the support ring (41) on plunger with v-side facing the manifold. 15. Place entire manifold/seal sleeve assembly over the studs and push firmly until seated against the crankcase. 13. Place support ring (41) and v-sleeves (40) into valve casing (43).
LP122A/LP122A-3100/LP123 DIMENSIONS (mm) LP122A-4000 DIMENSIONS (mm) 11
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.