South Bend Tools
For Machines Mfd. Since 10/21
Model SB1118
-53-
S E R V I C E
NOTICE
DO NOT let chain fall off sprockets. It can
be very difficult to return chain to its proper
location on sprockets without changing table
adjustments.
4.
Clean and lubricate chain and sprockets
(refer to Table Height Chain & Sprockets
on Page 40 for detailed instructions), then
re-install rear access panel.
The table height chain is located beneath the
table, and it transfers movement from the table
gearbox to the leadscrews that control table
height. The chain can be adjusted to remove
slack if the chain stretches over time or is
loosened during table leveling procedures.
Tensioning Table
Height Chain
To tension table height chain:
1.
DISCONNECT MACHINE FROM POWER!
2.
Remove rear access panel.
3.
Loosen idler assembly hex nut (see Figure
72), push idler sprocket (see Figure 45
on Page 40) against chain with moderate
pressure to eliminate slack, then tighten
hex nut while maintaining pressure on idler
assembly.
Tools Needed
Qty
Hex Wrench 4mm .................................................1
Wrench or Socket 24mm .......................................1
Figure
Figure 72. Location of idler assembly hex nut.
. Location of idler assembly hex nut.
!
Idler Assembly
Idler Assembly
Hex Nut
Hex Nut
6.
Keeping Rotacator dial at "0", position it
under right-hand edge of cutterhead and find
bottom dead center (BDC).
— If value of measurement on right-hand
side of table differs less than 0.003" from
left-hand side, then parallelism is within
tolerance and no adjustment is necessary.
— If value of measurement on right-hand
side of table differs more than 0.003" from
left-hand side, then parallelism is out of
tolerance and must be adjusted. Proceed
to Step 7.
7.
Determine which side of table to adjust to
bring table parallel with the cutterhead to
within 0.003".
8.
On that side of table, loosen (2) cap
screws on leadscrew housing bracket (see
Figure 71).
9.
Insert long end of 10mm hex wrench
into leverage hole (see Figure 71), and
turn bracket until table is parallel with
cutterhead from side to side.
Note: The slight deformation of the rubber
elevation screw cover is normal and will not
affect table movement.
Figure
Figure 71. Leadscrew housing bracket.
. Leadscrew housing bracket.
!
Housing
Housing
Bracket
Bracket
Leverage
Leverage
Hole
Hole
x 2
10.
Tighten cap screws loosened in Step 8.
