Biesemeyer 78-920 T-Square® User manual

1346214_RevB_11-10-07
SUPPLEMENTARY INFORMATION FOR THE DELTA
MODEL 36-790 RT-40 - 14" TILTING ARBOR SAW
BIESEMEYER® (Model 78-920 T-Square®)
12" - 14" Table Saw Fence System 52-1/2" Capacity
IMPORTANT - The information in this document contains assembly and related instruction for your fence system. These
instructions replace the information on pages 7 and 8 in your table saw instruction manual (Part #422-28-651-0001) Keep
these supplemental instructions for future reference.
CARTON CONTENTS
1. Front Rail
2. Guide Tube
3. Fence Assembly
4. 1/2"-13 x 2" Flat Head Bolts
5. 5/16" Hex Wrench
6. 1/2" Flat Washer
7. 1/2"-13 Hex Nuts
8. Lockwasher
9. Retaining Nut
10. Retaining Nut Hex Bolt
11. Retaining Nut Bolt
12
3
45
6
7
11
9
8
10

2. Use the template (A) Fig. 3 that is supplied with the fence system to check and adjust the level of the front rail (B) to
both ends of the saw table. Tighten the guide rail hardware securely.
NOTE: Do NOT level the rail with the extension wing. Use the saw table.
3. Place the guide tube (A) Fig. 4 on the saw table. Align the nine (9) threaded holes with the holes in the front ledge.
4. Position the guide tube on the front rail. Secure the guide tube with nine (9) 1/2" hex-head bolts and lockwashers (Fig. 5).
5. Place the rip fence on the guide rail.
6. Insert a bolt (A ) Fig. 6 up through the hole (B ) at the extreme right end of the guide tube. Thread the retaining nut (C)
on the bolt (see the inset - Fig. 6)
NOTE: This retaining nut prevents the fence from falling off the end of the guide rail.
IMPORTANT: Before applying power to the saw, ensure that the rip fence is parallel to the miter gauge slot. Refer to the
section "HOW TO OPERATE AND ADJUST THE RIP FENCE".
Fig. 3 Fig. 4
A
B
A
A
B
C
ASSEMBLY
Disconnect the machine from the power source.
1. Use three (3) 1/2-13 X 2" flat-head bolts, flat washers, lockwashers, and hex nuts (A) Fig. 1 to attach the guide rail to
the front of the saw table (Fig. 2). Loosely tighten with the supplied hex wrench for further adjustment.
Fig. 1 Fig. 2
A
Fig. 5 Fig. 6

HOW TO OPERATE AND ADJUST THE RIP FENCE
1. To move the fence along the guide rail, lift the clamp lever (Fig. 7).
2. To lock the fence in position, push down on the clamp lever (Fig. 8).
NOTE: The clamp lever will remain in the "up" position when you move the fence.
The distance the fence is positioned from the blade is
indicated by the witness line (A) Fig. 9 on the cursor. To
adjust the cursor, test cut a workpiece with the fence
locked in position. Measure the width of the workpiece.
Loosen the two screws (B), adjust the cursor until the
witness line (B) is aligned with the previous measure-
ment. Tighten the screws.
Fig. 7 Fig. 8
Fig. 9
A
B
HOW TO ADJUST THE FENCE PARALLEL TO THE MITER GAUGE SLOTS
IMPORTANT: Be certain that the miter gauge slots are parallel with the blade before adjusting the fence.
Move the fence (A) Fig. 10 until the bottom edge is aligned with the edge of one of the miter gauge slots and lock it in place
with the lock clamp (B). If the fence is not parallel to the slot, raise the lock clamp, and lift the fence off of the guide tube.
Use a 3/16" hex wrench (not supplied) to tighten or loosen the adjustment screw (either C or D) Fig. 11 that applies.
IMPORTANT: Any necessary adjustments should be very small.
Fig. 10
A
BFig. 11
CD

LUBRICATION
1. Apply paste wax to the fence and guide tube sliding
surfaces weekly.
2. Apply grease to the cam lock (A) Fig. 13 and the cam
foot (B) occasionally.
SERVICE
REPLACEMENT PARTS
Use only identical replacement parts. For a parts list or to order parts, visit our website at biesemeyer.com. You can also order parts
from our Customer Care Center at 1-800-782-1831.
HOW TO ADJUST THE CLAMP HANDLE
When the clamp handle is in the "down" position, the
fence will lock to the guide tube. If this is not the case, lift
the clamp handle and raise the fence assembly off of the
guide tube. Slightly tighten the two adjusting screws (E)
and (F) an equal amount, using a 3/16" hex wrench. Re-
place the fence assembly and check for correct clamp-
ing. Repeat as necessary.
IMPORTANT: After adjustment of the clamp handle,
check to see that the fence and miter gauge slots are
parallel. Fig. 12
EF
Fig. 13
AB