Table of Contents
3.4 Reassemble the Heater Block .................................................................................................... 20
3.4.1 Install New Heater Seal and Washer ............................................................................. 20
3.4.2 Install New Spring .......................................................................................................... 20
3.4.3 New Heater Block Bearing ............................................................................................. 20
3.4.4 Position Heater Block .................................................................................................... 20
3.4.5 Attach Heater Block ....................................................................................................... 20
3.4.6 (Optional) Connect New Heater Block ........................................................................... 20
3.5 Attach the Valve Mount ............................................................................................................... 21
3.5.1 Verify O-Rings................................................................................................................ 21
3.5.2 Install Valve Mount Screws ............................................................................................ 21
3.6 (Optional) Replace Melter Cable ................................................................................................ 22
3.6.1 (Optional) Remove the Melter Cable ............................................................................. 22
3.6.2 (Optional) Identify Cartridges on New Melter Cable ...................................................... 22
3.6.3 (Optional) Shorter Heater Cartridge .............................................................................. 22
3.6.4 (Optional) Longer Heater Cartridge ............................................................................... 22
3.6.5 (Optional) Install Cartridges and Tighten Setscrews .................................................... 22
3.7 Reassemble the Jet .................................................................................................................... 23
3.7.1 Insert the Nozzle Plate Screws ...................................................................................... 23
3.7.2 Position the Melter Assembly ........................................................................................ 23
3.7.3 Position the Top Cover .................................................................................................. 23
3.7.4 Attach Top Cover ........................................................................................................... 23
3.7.5 Connect the Melter ........................................................................................................ 23
3.7.6 Install Feed Tube Spacer ............................................................................................... 23
3.7.7 Attach Upper Feed Tube Enclosure .............................................................................. 23
3.7.8 Tuck the Cables ............................................................................................................. 24
3.7.9 Trim the Cables.............................................................................................................. 24
3.7.10 Connect the Air Valve .................................................................................................... 24
3.7.11 Position Mounting Plate ................................................................................................. 24
3.7.12 Attach the Mounting Plate .............................................................................................. 24
3.7.13 Attach the Dovetail Plate ............................................................................................... 24
4. SET THE JET HAMMER GAP ............................................................................................................. 25
4.1 Using the Gap Set Fixture .......................................................................................................... 25
4.2 Prepare the Gap Set Fixture ....................................................................................................... 26
4.2.1 Check the Zeroing Plate ................................................................................................ 26
4.2.2 Zero the MIcrometer ...................................................................................................... 26
4.2.3 Remove the Zeroing Plate ............................................................................................. 26
4.2.4 Attach the Jet ................................................................................................................. 26
4.3 Measure the Gap ........................................................................................................................ 27
4.3.1 Connect the Jet .............................................................................................................. 27
4.3.2 Reading the Dial ............................................................................................................ 27
4.4 Adjust the Gap ............................................................................................................................ 27
GRACO STANDARD WARRANTY ........................................................................................................... 28
3A6328A Advanjet HM-2600 Hotmelt Jet Maintenance and Repair Page 3 of 28