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LINCOLN Model 85621 sm-rev0510

Form # 404160 Page 16

PILOT VALVE SERVICING

To service the pilot valve first shut

off the compressed air supply, bleed

the pressure from the pump, and

disconnect the air supply line from the

pump.

STEP #1:

See pump assembly

drawing.

Using a 1/2" wrench or socket,

remove the four capscrews (item 11).

Remove the air inlet cap (item 8) and

air inlet gasket (item 18). The pilot valve

assembly (item 4) can now be removed

for inspection and service.

STEP #2:

Disassembly of the

pilot valve.

Remove the pilot valve spool (item

4-D). Wipe clean and inspect spool and

o-rings for dirt, cuts or wear. Replace

the o-rings and spool if necessary.

Remove the retaining ring (item

4-F) from the end of the sleeve (item

4-B) and remove the sleeve from the

valve body (item 4-A). Wipe clean and

inspect sleeve and o-rings for dirt, cuts

or wear. Replace the o-rings and sleeve

if necessary.

STEP #3:

Re-assembly of the

pilot valve.

Generously lubricate outside

diameter of the sleeve and o-rings.

Then carefully insert sleeve into valve

body. Take CAUTION when inserting

sleeve, not to shear any o-rings. Install

retaining ring to sleeve. Generously

lubricate outside diameter of spool and

o-rings. Then carefully insert spool into

sleeve. Take CAUTION when inserting

spool, not to shear any o-rings. Use

BP-LS-EP-2 multipurpose grease, or

equivalent.

STEP #4:

Re-install the pilot valve

assembly into the intermediate.

Be careful to align the ends of the

pilot valve stem between the plunger

pins when inserting the pilot valve into

the cavity of the intermediate.

Re-install the gasket, air inlet cap

and capscrews. Connect the air supply

to the pump. The pump is now ready

for operation.

Pilot Valve Servicing, Assembly Drawing & Parts List

PILOT VALVE ASSEMBLY PARTS LIST

ITEM PART NUMBER

DESCRIPTION

QTY

274583

Pilot Valve Assembly

4-A

274584

Valve Body

4-B

275805

Sleeve (With O-rings)

4-C

274586

O-ring (Sleeve)

4-D

274587

Spool (With O-rings)

4-E

274588

O-ring (Spool)

4-F

274589

Retaining Ring

Содержание 85621

Страница 1: ...ble Service and Conversion Kits 10 Composite Repair Parts List 11 Air Valve Assembly Drawing Parts List and Servicing 12 Actuator Plunger Servicing 13 Diaphragm Service Drawing 14 Diaphragm Servicing...

Страница 2: ......

Страница 3: ...atures INTAKE DISCHARGE PIPE SIZE 1 NPT internal CAPACITY 0 to 106 gallons per minute 0 to 401 liters per minute AIR VALVE No lube no stall design SOLIDS HANDLING Up to 25 in 6mm HEADS UP TO 125 psi o...

Страница 4: ...50 25 0 100 90 80 70 60 50 40 30 20 10 0 BAR PSI HEAD 1 2 3 4 5 6 7 0 30 20 10 0 9 1 6 7 6 3 4 5 1 5 NPSHR FEET METERS 100 PSI 6 8 Bar 80 PSI 5 44 Bar 60 PSI 4 08 Bar 40 PSI 2 72 Bar 20 PSI 1 36 Bar...

Страница 5: ...DELS 85621 SERIES B BOTTOM VIEW FRONT VIEW METAL MUFFLER 1 NPT EXHAUST PORT SUCTION PORT 1 1 2 NPT DISCHARGE PORT 1 1 2 NPT 1 2 5 16 4 7 8 7 1 32 3 9 16 9 7 8 4 15 16 22 11 1 2 2 5 16 16 21 32 12 3 16...

Страница 6: ...DE VIEW DIMENSIONAL TOLERANCE 3mm MODELS 85621 SERIES B BOTTOM VIEW FRONT VIEW METAL MUFFLER 1 NPT EXHAUST PORT SUCTION PORT 1 1 2 NPT DISCHARGE PORT 1 1 2 NPT 13 8 124 179 90 250 125 559 292 59 423 3...

Страница 7: ...pressure condition To prevent damage to equipment and or personnel place a pressure relief valve in the system The pressure relief valve should be set to relieve pressure in the system at 150 psi and...

Страница 8: ...ssor Filter Regulator CAUTION The air exhaust should be piped to an area for safe disposition of the product being pumped in the event of a diaphragm failure INSTALLATION GUIDE Top Discharge Ball Valv...

Страница 9: ...Corrective Action Remove muffler screen clean or de ice and reinstall Refer to theAir Exhaust section of your pump SERVICE MANUAL What to Check Pumped fluid in air exhaust muffler Corrective Action D...

Страница 10: ...rt up of the pump It is the responsibility of the purchaser to retain this manual for reference Failure to comply with the recommendations stated in this manual will damage the pump and void factory w...

Страница 11: ...LINCOLN Model 85621 sm rev0510 Form 404160 Page 9...

Страница 12: ...mposite Repair Parts Drawing 271747 WET END KIT Nitrile Diaphragms Balls and UHMW Seats 273040 AIR END KIT Seals O rings Gaskets Retaining Rings Air Valve Sleeve Spool Set Air Valve Assembly and Pilot...

Страница 13: ...1 00 4 13 271792 Capscrew Flat Socket Head 7 16 14UNC x 1 25 8 14 271756 Chamber Outer 2 15 271757 Chamber Inner 2 16 271758 Diaphragm 2 18 271795 Gasket Air Valve 1 19 271796 Gasket Pilot Valve 1 20...

Страница 14: ...eeded and replace with a new sleeve and spool set item 1 B Step 3 Reassembly of the air valve Install one bumper item 1 C and one end cap item 1 E with two o rings items 1 D and fasten with four hex c...

Страница 15: ...if necessary Apply a light coating of grease to each o ring and re install the plungers in to the bushings Push the plungers in as far as they will go To remove the bushings item 7 first remove the r...

Страница 16: ...LINCOLN Model 85621 sm rev0510 Form 404160 Page 14 Diaphragm Service Drawing...

Страница 17: ...e diaphragm rod and make sure the radius on the inner diaphragm plate is towards the diaphragm as indicated on the diaphragm servicing illustration Thread the assembly onto the diaphragm rod leaving l...

Страница 18: ...sembly of the pilot valve Generously lubricate outside diameter of the sleeve and o rings Then carefully insert sleeve into valve body Take CAUTION when inserting sleeve not to shear any o rings Insta...

Страница 19: ...6 wrench or socket to remove the fasteners Once the manifold is removed the check valve components can be seen Inspect the check balls items 2 for wear abrasion or cuts on the spherical surface The ch...

Страница 20: ...Reducing the pipe size will restrict air flow and reduce pump performance When the pumped product source is at a higher level than the pump flooded suction condition pipe the exhaust higher than the p...

Страница 21: ...o reduce the risk of static electrical sparking this pump must be grounded Check the local electrical code for detailed grounding instruction and the type of equipment required Grounding The Pump Take...

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