Weir Roto-Jet RO III 3x2 Disassembly-Assembly Manual
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Weir Roto-Jet RO III 3x2 Disassembly-Assembly Manual

High pressure pitot tube pumps
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Disassembly/Assembly
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RO III 3x2/ROH III 3x2
RJ-DA-2
7/19

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Don Sanchez
June 23, 2025

Installation of mechanical seal - is there a torque value for installing the seal other than the set screws? Looking for tension of the bellows.

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Summary of Contents for Weir Roto-Jet RO III 3x2

  • Page 1 Excellent Engineering Solutions Disassembly/Assembly Manual RO III 3x2/ROH III 3x2 RJ-DA-2 7/19...

  • Page 3: Table Of Contents

    ROTO-JET PUMP DISASSEMBLY/ASSEMBLY RO III 3x2 / ROH III 3 x 2 Table of Contents GENERAL ....................1 1.1. Introduction ..................1 1.2. Roto-Jet Pump Design ..............1 1.3. Pump Identification ................2 DISASSEMBLY/ASSEMBLY ..............2 2.1. General .................... 2 2.2.
  • Page 4 ROTO-JET PUMP DISASSEMBLY/ASSEMBLY RO III 3x2 / ROH III 3 x 2 Table of Contents Continued DRIVE BEARING CONVERSION ............28 HYDROSTATIC PRESSURE TEST ............29 ROTOR ASSEMBLY BALANCING ............29 PARTS ..................... 31 6.1. Minimum Recommended Spare Parts ........... 31 6.2.

  • Page 5: General

    ROTO-JET PUMP DISASSEMBLY/ASSEMBLY RO III 3x2 / ROH III 3 x 2 1. GENERAL 1.1. Introduction This manual has been prepared to assist you in understanding the construction and the correct methods of disassembly and assembly for your new Roto-Jet pump. The Roto-Jet pump is the simplest and most reliable high pressure pumping device ever invented.

  • Page 6: Pump Identification

    1.3. Pump Identification Roto-Jet pumps are designated by a series of letters and numbers, such as ROA- S484. The first group, ROA, is an indication of the basic mechanical configuration and the second group, S484, designates the pick-up tube size. The pump nameplate gives both the pump model designation and the pump serial number.

  • Page 7: Recommended Tools

    2.2. Recommended Tools DESCRIPTION QUANTITY PART NUMBERS Complete Tool Kit (includes special and purchased tools) 06P661210-004 Special Tool Kit (includes items under special tools) 06P661210-003 SPECIAL TOOLS Alignment Tool-Pick-Up Tube (5/16" - 24) 060582064 Alignment Tool-Endbell 060580573 Guide, Center-Pick-Up Tube 060580574 Handle, Seal Installation 060582341...

  • Page 8: Recommended Tools, Continued

    Recommended Tools, continued. PURCHASED TOOLS, continued Socket - 3/8" Hex Bit, 3/8" Drive 060095034 Socket - 1/2" Hex Bit, 1/2" Drive 060095036 Protector, Shaft Puller 060095037 Heat Gun - 750° Max (120V/60Hz) 060095046 Tempilstick - 150° F 060095047 Tempilstick - 175° F 060095048 Tempilstick - 200°...

  • Page 9: Disassembly/Assembly Stands

    2.3. Disassembly/Assembly Stands CAUTION When lifting the pump into the vertical position with or without the assembly stand a swivel hoist ring shall be used in place of the lifting eye bolt. RO/ROH 3x2...

  • Page 10: Ro/Roh 3X2 Pump Section Drawing

    2.4. RO/ROH 3x2 Pump Section Drawing Torque Table Item # Ft.Lbs Figure 2.4 RO/ROH 3x2...

  • Page 11: Parts List - Ro Iii & Roh Iii 3 X 2 Pump

    2.4.1. Parts List - RO III & ROH III 3 x 2 Pump Item Part Qty. Description Number Pick-up Tube: (1) 17.4 PH S-266 0656030 S-375 0656031 S-484 0655625 D-484 0658202 S-600 0655626 D-600 0655627 Rotor Assembly (See section 2.5.1 for parts list) Cap, Bearing 0655488 Foot, Pedestal...
  • Page 12 2.4.1 Parts List - RO III & ROH III 3 x 2 Pump, Continued Item Part Qty. Description Number Manifold Threaded: Ductile Iron 0662850-1 Stainless Steel 0662850-2 Flanged: Steel 0662577-01 Stainless Steel 0666243-1 Flanged-High Speed Option: Steel 0662577-03 Stainless Steel 0662577-04 Nameplate 0660681...
  • Page 13 2.4.1 Parts List - RO III & ROH III 3 x 2 Pump, Continued Item Part Qty. Description Number Capscrew, Hex Head Pedestal Foot (Not Shown) 060088814 Capscrew, Hex Head Bearing Cap 060088399 Capscrew, Hex Head Manifold Plug 060088365 Capscrew, Hex Head Rotor Case 060088399 Capscrew, Soc.

  • Page 14: Ro/Roh Iii Rotor Assembly Section Drawing

    2.5. RO/ROH III Rotor Assembly Section Drawing Torque Table Item Ft-Lbs Figure 2.5 RO/ROH 3x2...

  • Page 15: Parts List - Ro Iii & Roh Iii 3X2 Rotor Assembly

    2.5.1. Parts List - RO III & ROH III 3x2 Rotor Assembly 0660588 - Stainless Steel ROHB 3x2 Stacked and Balanced 0660589 - Stainless Steel ROHA 3x2 Stacked and Balanced 0659723-001 - Stainless Steel ROH 3x2 Balanced 0660566 - Steel ROHB 3x2 Stacked and Balanced 0660554 - Steel ROHA 3x2 Stacked and Balanced...
  • Page 16 Parts List - RO III & ROH III 3x2 Rotor Assembly, Continued 0660588 - Stainless Steel ROHB 3x2 Stacked and Balanced 0660589 - Stainless Steel ROHA 3x2 Stacked and Balanced 0659723-001 - Stainless Steel ROH 3x2 Balanced 0660566 - Steel ROHB 3x2 Stacked and Balanced 0660554 - Steel ROHA 3x2 Stacked and Balanced...

  • Page 17: Seal Parts Lists

    2.6. Seal Parts Lists 2.6.1. Parts List - Stationary Single Seal - 3x2 Pump Figure 2.6.1 - Stationary Single Seal - 3x2 Pump Item Qty. Description Part Numbers Seal Kit - Pusher - Carbon (Standard) 0661130-001 Seal Kit - Bellows - Carbon 0661267 Seal Kit - Pusher - Tungsten Carbide 0661268...

  • Page 18: Parts List - Rotating Single Seal 3X2 Pump

    2.6.2. Parts List - Rotating Single Seal 3x2 Pump Figure 2.6.2 - Rotating Single Seal - 3x2 Pump Item Qty. Description Part Numbers Seal Kit - Bellows - Carbon (Standard) 060087002 Seal Kit - Bellows - Carbon 060087027 Seal Kit - Bellows - Tungsten Carbide 060087018 Consisting Of: Seal - Bellows - Carbon...

  • Page 19: Parts List - Double Seal - 3X2 Pump

    2.6.3. Parts List - Double Seal - 3x2 Pump Figure 2.6.3 - Double Seal - 3x2 Pump Item Qty. Description Part Numbers Seal Kit - Pusher - Carbon (Standard) 0658301 Seal Kit - Bellows - Carbon 0658302 Seal Kit - Pusher - Tungsten Carbide 0659523 Consisting Of: Seal - Pusher - Carbon Face...

  • Page 20: Cautions

    2.7. Cautions The following precautions are recommended to insure continued satisfactory operation of unit after reassemble. 2.7.1. Do not re-use o-rings on components during reassembly as they lose their seal integrity and may leak. 2.7.2. When replacing pick up tube, always replace pick up tube capscrews to avoid attachment complications.
  • Page 21 2.8.1.4. Seals may be changed with pump in horizontal (mounted) position or removed from mount and secured in position in which pump shaft is facing downward. The steps for replacing seal remain the same. However, extreme care must be taken to avoid face damage during handling of pump components in the horizontal position.
  • Page 22 Figure 2.8 2.8.3. Stationary Single Seal - 3x2 Pump. Reference figure 2.6.1 2.8.3.1. Remove nut (55) from seal hub - left thread. 2.8.3.2. Remove mating ring (78) and o-ring (69). 2.8.3.3. Remove 3 set screws (80) and 4 socket head capscrews (71), then remove the seal plate (70) and seal (75) from the endbell (26).
  • Page 23 2.8.3.8. Slide seal plate (70) into the endbell (26) with seal outward and drain hole to bottom of pump. Install 4 socket head capscrews (71) and hand tighten. Mount dial indicator on the seal hub to measure radial runout of the seal plate register diameter (see Figure 2.8 "B").
  • Page 24 2.8.4.13. Replace seal hub (55), if required seal hub radial runout must be checked and adjusted as required. reference section 2.8.6 for seal hub replacement. 2.8.4.14. Slide seal plate (70) into endbell (26) with seal outward and drain hole to bottom of pump. Install 4 socket head capscrews and hand tighten.
  • Page 25 2.8.5.10. On 3-1/2" seals install balance sleeve and o-ring simultaneously with seal. On 3-1/4" seals install o-ring and seal. 2.8.5.11. Reassemble per section 2.8.7. 2.8.6. Seal Hub Replacement (Reference Figure 2.4) 2.8.6.1. Remove the 5 set screws (74) and 5 socket head capscrews (72) that attach hub (29) to rotor cover.

  • Page 26: Pick Up Tube Replacement

    2.8.7.7. If pump has been turned vertical, (shaft pointed down) at any time the pedestal cover (18) should be removed and the oil rings (22) be placed on their respective slingers (19 and 20). Remount cover (18) on pedestal. 2.8.7.8. Re-install pump. 2.9.

  • Page 27: Bearing Replacement

    the rotor cover does not cock, as the o-ring might be damaged. Torque the capscrews to 100 ft. lbs. 2.9.6. Endbell installation (Reference figure 2.4) 2.9.6.1. Install alignment tools (P/N 0600580573) in rotor case (31) for endbell/rotor case alignment. Align endbell so that the 1/2" drain hole is at the bottom.
  • Page 28 2.10.2.4. Thread the 1/2" eyebolts (P/N 060055411) into three evenly spaced holes at the periphery of the rotor cover (4). Remove the rotor, driveshaft (5) and bearings from the pedestal. Place the rotor assembly on a flat surface. Remove eyebolts from the rotor cover and thread in three 1/2"...
  • Page 29 2.10.4.4. Heat the bearing sleeve (25) to 175°-200°F. Check the temperature and then insert a new rotor bearing into the sleeve. Be sure to place the bearing into the sleeve with the wide shoulder of the outer race against the shoulder of the bearing sleeve also make sure the punch mark is facing upwards on the inter race.
  • Page 30 2.10.5.1. Install rotor alignment tool (P/N 0600581220) in bearing retainer (15) to be used as a guide to rotor assembly. 2.10.5.2. Lubricate bearing cap O-ring (52) and place in grove in the bearing cap (14). Install the bearing cap with the drain port down on the pedestal with three hex head capscrews (60) and torque to 104 ft.
  • Page 31 Number of 0 or Required Shims Required Setting inches .408 .423 .438 .453 .468 .483 .498 .513 .528 .422 .437 .452 .467 .482 .497 .512 .527 .542 10.36 10.74 11.13 11.51 11.89 12.27 12.65 13.03 13.41 10.72 11.10 11.48 11.86 12.24 12.62 13.00...

  • Page 32: Rotating Component Replacement

    2.10.6.5. Place a dial indicator on the rotor cover seat (see Figure 2.10.6) and rotate the assembly by hand. The runout of the seat must be within .001" (.025 mm) T.I.R. 2.10.6.6. Return pump to horizontal position and install shaft sleeve (28). Put the bearing cap slinger (27) in place and install a new self-locking nut (46).

  • Page 33: Drive Bearing Conversion

    2.11.7. Completion. Complete assembly per sections 2.10.5 through 2.10.7. Install rotor cover drain plug (8) and torque to 13 ft. lbs. 3. DRIVE BEARING CONVERSION 3.1. RO Conversion Reference figure 2.4 3.1.1. Remove rotor assembly per 2.10.1 - 2.10.2. 3.1.2. Convert from RO-A (direct drive) to RO-B (belt drive): 3.1.2.1.

  • Page 34: Hydrostatic Pressure Test

    3.1.3.2. Place both spacers of the matched pair of bearing spacers (23) on the thrust bearing. Heat a new radial bearing (13A) to 150-175 degrees F and place it on the shaft against the inner bearing spacer with the wide face of the inner race facing away from the matched pair of bearing spacers (23).

  • Page 35: Parts

    6. PARTS 6.1. Minimum Recommended Spare Parts ITEM 3 x 2 REQUIRED Bearing Kit Direct Drive 06P661017 06P661017-001 Belt Drive Seal Kit* (standard) Single Rotating 060087002 Single Stationary 0661130-001 Double Stationary 0658301 06P661017 Pick-up Tube Replacement Kit, Nitrile Hub Nut/Stationary Seal 0655735 Pedestal Cover Gasket 0655601...
  • Page 36 * Pump may have been purchased with special seal kit. Be sure to order correct seal kit. Refer to section 2.6. RO/ROH 3x2...

  • Page 37: Parts List - Auxiliary Equipment

    6.2. Parts List - Auxiliary Equipment BYPASS ORIFICE Description Part Number Orifice - 3/32" 0682444 Orifice - 1/8" 0682445 Orifice - 5/32" 0682446 6.3. Ordering Parts 6.3.1. General - It is Roto-Jet Pump's policy to continually improve its products. Therefore, specifications are subject to change without notice.

  • Page 38: Maintenance Record

    7. MAINTENANCE RECORD DATE: SERIAL NO. MAINTENANCE RECORD RO/ROH 3x2...

  • Page 39: Appendix A

    APPENDIX A When using the swivel hoist, use in place of this lifting eye. RO/ROH 3x2...
  • Page 40 For optimum service and technical assistance, please contact our factory for the distributor or representative nearest to your project: Weir Specialty Pumps 440 West 800 South Salt Lake City, UT 84101 USA (P.O. Box 209, UT 84110-0209) Tel 801-359-8731 Fax 801-530-7828 info@weirsp.com...

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