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T27696
User guide
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Grizzly T27696 User guide

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MODEL T27696
12" HELICAL CUTTERHEAD
INSTALLATION INSTRUCTIONS
For questions or help with this product contact Tech Support at (570) 546-9663 or techsupport@grizzly.com
Introduction
The Model T27696 indexable insert helical cutterhead is designed to fit Grizzly jointer Models G0609 and G0609X.
The T27696 helical cutterhead is only designed to be used with the Grizzly Model G0609 and G0609X jointers. Do NOT install this cutterhead in any other jointer model or make. Doing so could result in property damage or serious personal injury.
The total procedure of changing the cutterhead and setting up the jointer takes approximately one hour. Read these instructions thoroughly before beginning. We strongly recommend replacing the old cutterhead bearings at the time of installation. The T27696 uses (1) 6206ZZ bearing and (1) 6204ZZ bearing.
Note: Not all pictures in these instructions will exactly reflect your machine. Some photos are provided for representation purposes only to help you better understand the concepts described in the procedure.
Recommended Tools
Hex Wrench 3, 4, 8mm ...............................1 Ea.
Wrench/Socket 10, 14, 19mm ......................1 Ea.
Wood Blocks 12" 2x4, 24" 4x4 .....................2 Ea.
Flat Piece of Scrap Wood ................................. 1
Inventory (Figure 1)
C
B
Specifications
Maximum Width of Cut ................................... 12"
Cutterhead Diameter .................................98mm
Number of Indexable Carbide Inserts ............. 96
COPYRIGHT © JANUARY, 2017 BY GRIZZLY INDUSTRIAL, INC.
WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE
OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.
#MN18218 PRINTED IN CHINA
A
Figure 1.
E D
Helical cutterhead inventory.
V1.01.17
Removing Existing Cutterhead
1. DISCONNECT MACHINE FROM POWER!
2. Remove cutterhead guard and rabbet exten-
sion table.
3. Remove lock nut securing fence carriage, then remove fence assembly.
4. Remove fence bracket, then remove both side access panels.
5. Open motor access cover, loosen fasteners on tension rod, lift motor up, then remove V-belts.
6. G0609 Only: Remove knives.
—If you have difficulty accessing knives,
loosen infeed and outfeed table locks, loosen jam nuts and positive stop bolts located at back of machine, then lower beds farther, as shown in Figure 2.
7. Raise both beds all the way up, then tighten infeed and outfeed table locks. This bed position will make future steps easier while replacing cutterhead.
8. Remove hex nuts and flat washers that secure handwheels, then remove both handwheels.
9. On left side of jointer (facing front of machine), remove (3) Phillips head screws that secure bearing support plate to cabinet (see Figure 3).
Location Where
Handwheel Was
Removed
Figure 2. Example of jointer disassembly
Steps 1–6.
Jointer knives are extremely sharp. You must remove the jointer knives to avoid the risk of serious personal injury during the following steps.
Figure 3. Bearing support plate screws.
10. Loosen set screw that secures collar on helical
gear shaft behind P-housing (see Figure 4).
Helical
Gear Shaft
Set Screw
P-Housing
Figure 4. Collar on helical gear shaft.
Collar
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T27696 12" Helical Cutterhead
11. Slide out helical gear shaft assembly (see Figure 5) through front of cabinet.
Figure 5. Removing helical gear shaft.
15. While two assistants lift infeed table, place
a 24" long 4x4 board (or two 2x4s nailed together) between cabinet and bed, as shown in Figure 6.
Rubber Gasket
4x4
12. Repeat Steps 9–11 on right side of jointer.
13. Remove M8-1.25 x 25 cap screws and lock
washers securing stand to base.
14. During following steps, you will lift base off of cabinet to access cutterhead, so it can be removed. This can be accomplished using power lifting equipment or by using boards.
—If you have a forklift, engine hoist, or boom
crane, wrap lifting straps with a 900 lb. capacity around infeed and outfeed tables. Position straps as close to base as pos­sible to prevent damaging tables. With lift­ing straps positioned evenly, lift jointer off of cabinet four inches. Proceed to Step 15.
—If you do not have power lifting equipment,
follow Steps 15–17.
Figure 6. 4x4 placed between cabinet and bed
on infeed side of jointer.
Note: Be careful not to knock off rubber
gaskets (see Figure 6) located on bottom of base. If you accidentally knock gaskets loose, place them in a safe location for later re-installation.
16. Repeat Step 15 on other side to support outfeed table (see Figure 7).
T27696 12" Helical Cutterhead
4x4
Boards
Figure 7. Jointer bed supported with 4x4s on
both ends.
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17. Reach inside base and remove hex bolts and lock washers that secure cutterhead to base (see Figure 8).
Cutterhead
Jointer Base
Flat Washer
Hex Bolt
Figure 8. Removing cutterhead fasteners.
18. Mark side of front bearing block that faces
front of machine (see Figure 9) with tape or a felt marker to make it easier to re-install bear­ing blocks later.
Mark Here
19. Carefully slide cutterhead assembly out the back of jointer (see Figure 10).
Figure 10. Example of cutterhead removed.
Note: Your cutterhead may have paper or
metal shims stuck to the bearing block or the part of the casting where the bearing block rests. These were included at the factory when they calibrated your cutterhead even with the outfeed table. If you see these, care­fully pull them off and set them aside for later use, or keep them with your cutterhead in the event that you reinstall it later. Also, mark the side of the cutterhead where they were used, so the future install will go smoothly. Your new cutterhead may or may not need these.
Figure 9.
20. Place cutterhead on a work bench.
21. Remove left-hand-thread hex bolt and flat
washer that secure pulley, use a pulley puller to remove pulley from cutterhead (see Figure
11), then remove the key.
Location to mark front bearing block.
Figure 11. Removing pulley.
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T27696 12" Helical Cutterhead
22. Cut a 2x4 into two 8" pieces.
23. Place 2x4 blocks under rear bearing block, as
shown in Figure 12.
Tip: Wrapping tape around blocks can help
hold them together during the next step.
Rear Bearing
Block
Front Bearing
Block
Figure 12. Example of removing rear bearing
block.
Wear a face shield during the next step!
Rear Bearing
Block
Figure 13. Disassembled cutterhead assembly.
Jointer carbide inserts are extremely sharp. Wear leather gloves to avoid the risk of serious personal injury during the following steps.
Front Bearing
Block Cap
Front Bearing
Block
Installing Helical Cutterhead
1. Slide rear bearing block as far as possible
onto longer cutterhead shaft, as shown in
Figure 14.
24. Tap top of cutterhead shaft with a rubber
dead blow hammer and a 4x4 block. This should separate cutterhead from rear bearing block.
25. Remove (3) cap screws that secure front bearing block cap, then remove cap with a standard screwdriver.
26. Remove hex bolt and flat washer that secure bearing on cutterhead.
27. Repeat Steps 23–24 in a similar manner to remove cutterhead from front bearing block and bearing. Figure 13 shows disassembled components.
Rear Bearing
Block
Figure 14. Re-installing rear bearing block
assembly.
T27696 12" Helical Cutterhead
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2. Stand cutterhead upright between two 8" 2x4 blocks (see Figure 15), with the rear bearing block side down. Use a hammer and a wood block to seat cutterhead into rear bearing block. Tap wood block on cutterhead until it meets resistance.
Note: You can also use an arbor press to re-
install rear bearing block.
Rear Bearing
Block
4. Secure front bearing block with hex bolt and flat washer removed in Step 26 on Page 5, then re-install cap with (3) cap screws.
5. Place cutterhead on a bench, slide key into keyway, push pulley onto cutterhead shaft, then secure pulley with left-hand thread hex bolt and flat washer removed in Step 21 on
Page 4.
6. Wipe down part of casting where bearing
blocks will rest to remove sawdust.
7. Move cutterhead to jointer. Using mark from Step 18 on Page 4, install cutterhead so
front bearing block is positioned at front of machine (see Figure 17). Be careful not to chip carbide inserts on jointer beds.
Front Bearing
Block
Figure 15. Seating rear bearing block.
3. Use a hammer and a scrap piece of wood
to seat front bearing block onto cutterhead shaft, as shown in Figure 16. Tap front bear­ing block until it meets resistance.
Note: You can also use an arbor press to re-
install front bearing block.
Front Bearing
Block
Figure 17. Installing helical cutterhead.
8. Secure cutterhead assembly bearing blocks
to casting with hex bolts and lock washers removed in Step 17 on Page 4, as shown in
Figure 18.
Figure 16. Re-installing front bearing block.
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Figure 18. T27696 helical cutterhead secured
with hex bolts and lock washers.
T27696 12" Helical Cutterhead
9. Re-install any gaskets that were knocked off during disassembly.
10. Place base back on cabinet using power lift­ing equipment or two lifting assistants.
14. Move straightedge to other side to determine if one end of cutterhead body is higher/lower than the other. (Place feeler gauge between cutterhead body and straightedge to deter­mine height difference.)
—If you used power lifting equipment to
raise bed off of cabinet to remove existing cutterhead, make sure 900 lb. capacity straps are wrapped correctly around infeed and outfeed tables, remove 4x4 boards, then lower bed onto cabinet.
—If you did not use power lifting equipment
but only placed boards between base and cabinet, have two lifting assistants carefully lower each side of base onto cabinet while you remove 4x4 boards between cabinet and beds.
11. Re-install helical gear shafts and handwheel assemblies by repeating Steps 8–12 on
Pages 2–3 in reverse order.
12. Raise outfeed table up as far as possible.
13. Using straightedge and feeler gauge set,
inspect cutterhead parallelism with outfeed table, as shown in Figure 19. With straight­edge in position, raise or lower outfeed table until cutterhead body (not carbide insert) just touches straightedge.
—If cutterhead is even or within 0.004" of
outfeed table from one side to the other, skip to Step ??.
—If cutterhead is over 0.004" from one side
to the other, follow instructions in your G0609 manual on Pages 38–39 for check­ing infeed table parallelism and adjusting table parallelism. Once tables are parallel to cutterhead, proceed to Step 15.
15. Secure jointer base to stand with M8-1.25 x 25 cap screws and lock washers removed earlier.
16. Re-install V-belts on pulleys. (Refer to instruc­tions in your jointer manual for details.)
17. Place a straightedge on outfeed table so it extends over cutterhead, and rotate cutterhead pulley until one of the carbide inserts is at top-dead-center (TDC), as shown in Figures 20 & 21.
Straightedge
Outfeed Table
Figure 19. Checking cutterhead parallelism.
T27696 12" Helical Cutterhead
Top Dead
Center
Figure 20. Cutterhead insert at top-dead-center.
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Figure 21. Setting outfeed table height.
When correctly set, carbide insert will just touch straightedge at its highest point of rotation (see Figure 22).
—If your outfeed table is correctly set, no
adjustments are necessary.
—If insert lifts straightedge off table, or table
is below straightedge, adjust outfeed table height with outfeed table handwheel until straightedge just touches an insert at its highest point of rotation.
18. Lock outfeed table lock, re-install fence bracket and fence assembly, then secure fence carriage with lock nut.
19. Re-install rabbet extension table.
20. Re-install cutterhead guard back over
cutterhead, making sure spring tension in guard is properly set so guard springs back over cutterhead when it is pulled back and released.
21. Re-adjust infeed table.
Straightedge
Outfeed Infeed
Figure 22. Using a straightedge to align outfeed
table height with insert at TDC.
22. Reset positive stop bolts on infeed and outfeed tables.
23. Re-install motor cover and side access panels.
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T27696 12" Helical Cutterhead
Rotating/Changing Carbide Inserts
Tools Needed:
To rotate or change a carbide insert:
1. DISCONNECT MACHINE FROM POWER!
Number of Inserts:
T27696 ............................................................ 96
Each insert can be rotated to reveal any one of its four cutting edges. Therefore, if one cutting edge becomes dull or damaged, simply rotate it 90˚ to reveal a fresh cutting edge (see Figure 23).
In addition, each insert has a reference dot on one corner. As the insert is rotated, the refer­ence dot location can be used as an indicator of which edges are used and which are new. When reference dot revolves back around to its starting position, the insert should be replaced.
Reference Dot
2. Remove any sawdust from head of carbide insert Torx screw.
3. Remove Torx screw and carbide insert.
4. Clean all dust and dirt off insert and cutterhead
pocket from which insert was removed, and replace insert so a fresh, sharp edge is facing outward.
Note: Proper cleaning is critical to achieving
a smooth finish. Dirt or dust trapped between the insert and cutterhead will slightly raise the insert, and make a noticeable marks on your workpieces the next time you joint.
Figure 23.
Rotating indexable carbide inserts.
T27696 12" Helical Cutterhead
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Accessories
G8995—4" Heavy-Duty Pulley Puller
Indispensable for pulling gears or pulley off of press-fit shafts. Can be used in either a 2 or 3 jaw configuration. The 4" jaw fingers are also revers­ible so they can grab an outside or inside diam­eter. The forcing screw has a live center and is made of tough hardened steel. Keep one of these handy in your tool box.
Figure 24. G8995 4" Heavy-Duty Pulley Puller.
6204ZZ—Ball Bearing 6206ZZ—Ball Bearing
These bearings are direct replacements for the cutterhead bearings on the Model G0609 and G0609X jointers.
Figure 27. Model G0609 & G0609X replacement
cutterhead bearings.
T27714 —10-Pack of Indexable Carbide Inserts
15 x 15 x 2.5 Replacement carbide inserts for T27696 cutterhead.
Figure 25. T27714 Indexable Carbide Inserts.
G9644—12" Precision Straightedge H2675—16" Precision Straightedge
Is your straightedge really straight? These grade 00 heavy-duty stainless steel straightedges are manufactured to DIN874 standards for profes­sional results in setup and inspection work.
T21272—Golden Pigskin Gloves
These durable gloves will help keep your hands safe while working with all types of parts and machinery. Features include suede pigskin palm, safety cuff, and wing thumb.
Figure 28. T21272 Golden Pigskin Gloves.
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Figure 26. Precision straightedges.
T27696 12" Helical Cutterhead
Parts Breakdown & List
1
5
4
3
2
REF PART # DESCRIPTION REF PART # DESCRIPTION
1 PT27696001 HELICAL CUTTERHEAD 12" 4 PT27696004 DRIVER BIT TORX T20 2 PT27696002 FLAT HD TORX SCR T20 M6-1 X 15 5 PT27696005 L-WRENCH TORX T20 3 PT27696003 INDEXABLE CUTTER 15 X 15 X 2.5
T27696 12" Helical Cutterhead
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