Westco 16-25 Скачать руководство пользователя страница 23

Figure 5-1: Troubleshooting (Continued) 

 

Symptom 

 

Probable Cause 

 

Corrective Action  

Tong does not develop sufficient 

 

torque (continued) 

 

 

Motor runs but tong does not 

 

rotate 

 

 
 
 

Tong rotates slowly 

 

 
 
 

Tong hangs up under light load 

 

 
 

Tong rotates when control lever 

 

is in neutral 

 

 

Shifting lever will not remain in 

 

high-speed position 

 

 

 
 
 

Motor leaks 

 

 

Oil leaks from gear box 

 

 

Seal presents chronic problem 

 

 
 

Tong doors fail to open 

 

 

 
 
 
 
 

Rotary jams when making or 

 

breaking casing  

Restriction in hydraulic lines to 

 

power unit 

 

 

Faulty shifting mechanism 

 

 

Broken gear 

 

 
 

Power unit flow rate too low 

 

Reservoir oil level low 

 

Tong motor wear 

 

 

Excessively worn or broken guide 

 

roller or idler gear bearing 

 

 

Faulty control valve 

 

 
 

Locator pin improperly adjusted 

 

 

Groove worn in shifting shaft (by 

 

locator pin) 

 

Worn motor shaft 

 

 

Faulty shaft seal 

 

 

Blown shaft seal or gasket 

 

 

Plugged case drain 

 

 
 

Rotary is not in proper position 

 

 

Rotary plunger not functioning 

 

 
 

Improperly adjusted guide rollers 

 

 

Rotary plunger in pocket when 

 

torque was applied, or torque 

 

was applied too rapidly, not 

 

allowing plunger to depress  

Check hydraulic connections and 

 

lines for restrictions and obstructions 

 

 

Check shifting mechanism and repair 

 

as necessary 

 

Check for broken gear and replace 

 

as necessary 

 

 

Check power unit 

 

Check oil level 

 

Check motor 

 

 

Replace guide roller or idler gear 

 

bearing 

 

 

Replace control valve 

 

 
 

Adjust locator pin 

 

 

Replace locator pin assembly 

 

 

Replace motor 

 

 

Replace motor seal 

 

 

Replace seals or gasket 

 

 

Disconnect end of case drain 

 

Connected to valve and clear line 

 

 

Align reversing pin with proper arrow 

 

 

Clean, regrease and check for a point 

 

of interference 

 

 

Adjust guide roller shafts 

 

 

If possible, back up rotary until rotary 

 

plunger is in pocket (center front position). 

 

Operate per tong hanging instructions in 

 

"Installation." If rotary remains jammed, 

 

remove tong from pipe as shown below. 

 

 

Remove retainer bolt from bottom of each 

 

door. Pull open door (opposite door with 

 

jammed plunger), taking care to keep 

 

rotary closed. 

 

 

Placing a pry bar in space between jaws, 

 

force top door plate open and off 

 

jammed plunger, and open door. 

 

 

Section 5 Page 2  

Содержание 16-25

Страница 1: ...ra CA93001 Mailing Address P O Box 66 Oak View CA 93022 PRODUCTMANUAL MODEL 16 25 CASING TONG MANUFACTURED IN THE USA SPECIFICATIONS MAINTENANCE OPERATIONS ASSEMBLY 805 648 5004 805 648 5018 CONTACT w...

Страница 2: ...General Description Functions 1 2 Specifications 1 5 Options and Accessories 1 6 Section 2 Installation 2 1 Equipment Considerations 2 1 Hanging the Tong 2 2 Connecting the Hydraulic Lines 2 2 Section...

Страница 3: ...Drawing Case Door Assembly Parts List for Case Door Assembly For Tongs with Half Rollers Installation Drawing Case Door Assembly For Tongs with Half Rollers Parts List for Gear Box Assembly Installati...

Страница 4: ...ion installation operation and maintenance of the Westco Model 16 hydraulic power tong In this section the functions of the tong system specifications and options and accessories are described Figure...

Страница 5: ...is applied Figure 1 2 Schematic diagram of hydraulic system Hydraulic Drive System Figure 1 2 is a schematic drawing of the hydraulic drive system Hydraulic pressure from a separate power unit is app...

Страница 6: ...g pin During make up operations the pipe to be turned is first enclosed in the tong and the rotary door is closed and latched Then with the reversing pin in the make up position as described later the...

Страница 7: ...Figure 1 3 Schematic of drive train in high gear Figure 1 4 Low gear...

Страница 8: ...gh speed operation the power source should develop 70 gpm 227 1 lpm at pressure up to 1 000 psi 69 bar A load responsive power source should be used for optimum results Note that the pressure output p...

Страница 9: ...g control lever Pulling the lever outward provides pressure from the hydraulic power unit to operate the lift cylinder upward and thus to raise the tong whereas pushing the control lever forward opera...

Страница 10: ...d jaws according to the size of pipe being used Refer to Jaw Installation and parts Section 7 for available jaw sizes and installation procedures WARNING Do not attempt to change jaws with power unit...

Страница 11: ...on Connect the backup line to the torque gauge to restrain tong rotation and to provide torque readings for operations WARNING To prevent serious bodily injury secure tong to derrick with a backup lin...

Страница 12: ...vailable Torque Gauge Assembly Once installed the torque gauge assembly becomes an integral part of the unit To install the torque gauge on the tong proceed as follows 1 With mounting screws mount tor...

Страница 13: ...ure 3 1 Tong controls Preoperating Checks After installing the system check to be sure that all necessary adjustments are made and that the system is functioning correctly Before attempting operation...

Страница 14: ...igure 4 1 is out of the pocket rotary lockup and subsequent case damage may occur Pull the throttle handle to neutral and move the shifting lever to the low speed position down Again push the throttle...

Страница 15: ...ong on the casing section positioned for make up or breakout Close the doors Then operate the tong as follows Operating the Tong WARNING Be sure no part of the body or clothing is in tong rotary area...

Страница 16: ...handle in the opposite direction to back off Center the plunger in pocket open doors and pull tong away from joint Reposition casing tong away from rotary table as necessary and repeat the operating p...

Страница 17: ...s accessories for obvious damage evidence of hydraulic leaks etc Refer to the overhaul procedures for removal and replacement of any faulty parts Inspect jaw dies to be sure that the biting edge is no...

Страница 18: ...s Lubrication Proper lubrication is important to the operation and long life of the tong Hydraulic Fluid Requirements Grease Zerts During normal operation the tong should remain charged with hydraulic...

Страница 19: ...isassembly and Parts Section 8 3 Pack the unit with the specified gear grease see Figure 4 3 by liberally applying Grease through the back rotary opening in case Figure 4 2 Figure 4 4 Door latch Figur...

Страница 20: ...rollers slightly touch rotary 7 When the guide rollers are snugged up the high point arrow should be in approximately the same position in relation to the case opening Readjust to obtain this relatio...

Страница 21: ...each shift thereafter To check the operation of the shifting locator pin raise the shifting handle to the high speed position and verify that the lever remains in the high speed position until consid...

Страница 22: ...of jaws in tong or wrong rollers in jaw Drag magnet does not work Dies fail to grip pipe Undersized pipe Tong not hanging perpendicular to pipe Magnets not strong enough Oversized pipe Power unit pres...

Страница 23: ...llers Rotary plunger in pocket when torque was applied or torque was applied too rapidly not allowing plunger to depress Check hydraulic connections and lines for restrictions and obstructions Check s...

Страница 24: ...identified in Tong Disassembly and Parts Section 8 Disassemble the tong only to the extent required for necessary part replacement and or overhaul To disassemble the tong follow the exploded illustrat...

Страница 25: ...ng is free running If unusual noises do occur check any parts that have just been repaired or replaced for misalignment rubbing or grinding Refer to Troubleshooting Repeat the test procedure with the...

Страница 26: ...o neutral position when released Gear box oil is up to level of upper magnetic plug hole Gears and rotary are fully lubricated with grease Mounting clevis is secure and tong is leveled All hanging har...

Страница 27: ...de required clearance Install the drag magnet by holding the jaw upright and placing the magnet on the retaining pins with the grooved face of the magnet away from the jaw Hold the magnet in place and...

Страница 28: ...Figure 7 1 Installation of 6 5 8 through 13 3 8 inch jaws Section 7 Page2...

Страница 29: ......

Страница 30: ...Jaw roller shaft 1 100122 001 Flat die 3 109602 001 Flat die 2 100114 001 Retainer 1 Figure 7 3 Installation of 16 inch jaw Figure 7 4 Parts for 16 Inch Jaws Pipe Req d Req d Req d Size Part No per N...

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Страница 35: ...ing item can be removed without disassembly of the case Rotary assembly Piping manifold Motor Gear box assembly Door assemblies Door hinge bearings See Figures 8 6 and 8 8 Guide rollers See Figures 8...

Страница 36: ...ving retaining bolt 112426 001 and lockwasher 190100 095 Replace the assembly 112414 001 or roller 100046 001 and pin 190105 549 as required The cam inserts 112374 001 can be removed by removing the r...

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Страница 40: ...Figure 8 6 Tong case body door assembly Section 8 Page 6...

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