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Repair Instructions
PM8 and PM20
Meter Repair
For dispensing of petroleum based oils and anti-freeze. For professional use only.
Not approved for use in explosive atmospheres or hazardous (classified) locations.
PM8 and PM 20 Meter Models
See page 2 for model information, including maximum
working pressure and approvals
1500 psi (10.3 MPa, 103 bar) Maximum Working
Pressure
200 psi (1.4 MPa, 14 bar) Maximum Working Pressure -
Anti-freeze models
Repair Kits
18F169 Bezel Replacement, page 7
18F390 Anti-freeze Meter Bezel Replacement, page 7
18F170 Gasket Replacement, page 10
18F171 Solenoid Replacement, page 12
18F172 Trigger Replacement, page 15
18F173 Connection Replacement page 16
18F174 Valve Replacement for petroleum oil and gear
lube fluid valves, page 18
18F175 Valve Replacement for anti-freeze fluid valves,
page 18
18F176 Meter Replacement, page 23
Important Safety Instructions
Read all warnings and instructions in this
manual and in related PM8 and PM20
meter manuals before using the
equipment. Save all instructions.
Related Manuals
Manual in
Description
English
3A8307
PM8 and PM20 Meters
3A8560C
EN
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Table of Contents
Related Manuals for Graco PM8
Summary of Contents for Graco PM8
- Page 1 18F175 Valve Replacement for anti-freeze fluid valves, page 18 18F176 Meter Replacement, page 23 Important Safety Instructions Read all warnings and instructions in this manual and in related PM8 and PM20 meter manuals before using the equipment. Save all instructions. Related Manuals Manual in...
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Page 2: Models
Models Part No. Model Inlet Thread Fluid Extension Maximum Working Pressure 25U085 1/2 in. Anti-freeze Rigid 200 psi (1.4 MPa, 14.0 bar) 25U086 1/2 in. Anti-freeze Flex 200 psi (1.4 MPa, 14.0 bar) 25U087 1/2 in. BSPP Anti-freeze Rigid 200 psi (1.4 MPa, 14.0 bar) 25U088 1/2 in. -
Page 3: Table Of Contents
California Proposition 65 ....27 Graco Standard Warranty ....28... -
Page 4: Warnings
Warnings Warnings The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclamation point symbol alerts you to a general warning and the hazard symbols refer to procedure-specific risks. When these symbols appear in the body of this manual or on warning labels, refer back to these Warnings. Product-specific hazard symbols and warnings not covered in this section may appear throughout the body of this manual where applicable. - Page 5 Warnings WARNING EQUIPMENT MISUSE HAZARD Misuse can cause death or serious injury. • Do not operate the unit when fatigued or under the influence of drugs or alcohol. • Do not exceed the maximum working pressure or temperature rating of the lowest rated system component.
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Page 6: Recycling And Disposal
Recycling and Disposal Recycling and Disposal End of Product Life At the end of the product’s useful life, dismantle and recycle it in a responsible manner. • Perform the Pressure Relief Procedure. • Drain and dispose of fluids according to applicable regulations. -
Page 7: Repair
Repair Repair Pressure Relief Procedure Bezel Replacement Bezel Replacement Kit (18F169) Follow the Pressure Relief Procedure Anti-freeze Meter Bezel Replacement Kit (18F390) whenever you see this symbol. Disassembly 1. Follow Pressure Relief Procedure, page 7. 2. Loosen the swivel (33) from the hose and remove This equipment stays pressurized until pressure is the meter, then move to a work bench for repair. - Page 8 Repair 5. Disassemble the bezel (1) from the meter housing 7. Recycle and dispose of the replaced bezel (10) (F . 3). according to local recycling regulations. NOTE: Take care not to damage solenoid wire (14a). 8. Remove and discard gasket (2) that is located between the meter housing (10) and bezel (1), see .
- Page 9 Repair 4. Position the bezel (1) so that the display is in the upright position when holding the valve. 5. Reassemble the bezel (1) to the meter housing (10), see F . 3 on page 8. 6. Replace the four screws (9) and torque to 15 to 25 in-lbs (1.69 to 2.82 N•m), see F .
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Page 10: Gasket Replacement
Repair Gasket Replacement NOTE: Take care not to damage solenoid wire (14a). Gasket Replacement Kit (18F170) Disassembly 1. Follow Pressure Relief Procedure, page 7. 2. Loosen the swivel (33) from the hose and remove the meter, then move to a work bench for repair. 3. - Page 11 Repair Reassembly 9. Remove the cap screws (22) (F . 10). 1. Lubricate the connection tube o-rings (12) with oil . 12). NOTE: It is not required that the connection tube (13) be disassembled from both the valve housing (27) and the meter housing (10).
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Page 12: Solenoid Replacement
Repair Solenoid Replacement Solenoid Replacement Kit (18F171) Disassembly 1. Follow Pressure Relief Procedure, page 7. 2. Loosen the swivel (33) from the hose and remove the meter, then move to a work bench for repair. 3. Pull the impact guard (37) off of the meter (F . - Page 13 Repair 7. Remove the cap screws (22) (F . 19). . 19 . 17 8. Pull the valve housing (27) apart from the meter 6. Disconnect the solenoid wires (14a) from the housing (10) while simultaneously feeding the terminal block on the bezel (1) (F .
- Page 14 Repair Reassembly the valve housings will be unable to be fully assembled (F . 23). 1. Assemble the o-ring (15) onto the solenoid (14), applying a thin layer of oil to lubricate the o-ring . 21). . 23 5. Assemble the valve housing (27) and the meter .
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Page 15: Trigger Replacement
Repair Trigger Replacement Reassembly 1. Discard the removed trigger and latch components. Trigger Replacement Kit (18F172) 2. Install spring (17) and spring guide (18) into the Disassembly latch assembly (19) (F . 26). 1. Follow Pressure Relief Procedure, page 7. 2. -
Page 16: Connection Replacement
Repair 5. Squeeze the trigger, then latch the trigger latch to 5. Disassemble the bezel (1) from the meter housing make sure that it is operational. Squeeze and (10) (F . 30). release the trigger to ensure that the latch moves NOTE: Take care not to damage solenoid wire (14a). - Page 17 Repair 7. Remove the cap screws (22) (F . 32). . 34 Reassembly . 32 1. Install the new o-rings (12) onto the new connection 8. Pull the valve housing (27) apart from the meter tube (13), see F . 34. housing (10) while simultaneously feeding the 2.
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Page 18: Valve Replacement
Repair Valve Replacement Valve Replacement Kits(18F174 and 18F175) Disassembly 1. Follow Pressure Relief Procedure, page 7. 2. Loosen the swivel (33) from the hose and remove the meter, then move to a work bench for repair. 3. Pull the impact guard (37) off of the meter (37) (F 37). - Page 19 Repair 5. Disassemble the bezel (1) from the meter housing (10) (F . 39). NOTE: Take care not to damage solenoid wire (14a). . 41 8. Pull the valve housing (27) apart from the meter housing (10) while simultaneously feeding the solenoid wires (14a) into the meter housing (10) access hole (F .
- Page 20 Repair 10. Gently pry the trigger arms (21) apart and remove 30 28 from the cam (23) (F . 44). NOTE: The spring (17) and spring guide (18) will need to be caught and retained for reassembly. . 45 15. Note the position of the cam for installation of the new cam (F .
- Page 21 Repair Reassembly 6. Reinstall the washer (26) and screws (25) and torque to 15 to 25 in-lbs (1.69 to 2.82 N•m), see 1. Install the new push rod (16), see F . 46. . 43 on page 19. 2. Apply a thin layer of oil to lubricate the new o-rings 7.
- Page 22 Repair 15. Replace the two cap screws (22) and torque to 60 to 72 in-lbs (6.78 to 8.13 N•m), see F . 41 on page 16. Reconnect the solenoid wires (14a) to the terminal block on the bezel (1). The wires are polarity independent so place one wire in each terminal opening, see F .
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Page 23: Meter Replacement
Repair Meter Replacement 5. Disassemble the bezel (1) from the meter housing (10) (F . 54). Meter Replacement Kit s(18F176) NOTE: Take care not to damage solenoid wire (14a). Disassembly 1. Follow Pressure Relief Procedure, page 7. 2. Loosen the swivel (33) from the hose and remove the meter, then move to a work bench for repair. - Page 24 Repair Reassembly 7. Remove the cap screws (22) (F . 56). 1. Lubricate the connection tube o-rings (12) (F . 58). NOTE: It is not required that the connection tube (13) be disassembled from both the valve housing (27) and the meter housing (10).
- Page 25 Repair 5. Reconnect the solenoid wires (14a) to the terminal block on the bezel (1). The wires are polarity independent so place one wire in each terminal opening, see F . 55 on page 23. Optional - replace batteries (36) with four (4) new alkaline batteries.
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Page 26: Parts
Parts Parts 16 13 28 27 32 31 Torque screws to 15 - 25 in-lb/1.7 - 2.8 N•m) Apply thin film of lubricant Not applicable. Torque to 60 - 72 in-lb/6.8 - 8.1 N•m) Torque to 15- 20 ft-lb/20.0 - 27.0 N•m) 3A8560C... -
Page 27: California Proposition 65
Description Qty. 191552 WASHER, flat Ref. Part Description Qty. VALVE, handle, medium flow SD 1 ✜ BEZEL, PM8, PM20 28 ★✠ 15U700 PLUNGER, trigger lift 1‡ BEZEL, PM8, AF 29 ★✠ 15U701 SPRINGS, secondary 2 ✜ †✖‡ GASKET,PM8,BEZEL 30 ★✠... -
Page 28: Graco Standard Warranty
With the exception of any special, extended, or limited warranty published by Graco, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment determined by Graco to be defective.