Operator`s manual

Ridge Tool Company
16
300 Power Drive
Oversize Thread: For oversize (shallow thread) set head at
bottom line on guide post. This line is marked (2T OVER).
Undersize Thread: For undersize (deep thread) set head
at top line on guide post. This line is marked (2T UNDER).
Changing Posts For Straight
Or Tapered Threads
1. Adjust threader to cut standard size threads using
“STANDARD” reference line.
2. Remove screw from gear case at base of guide post.
Figure 16 – No. 141 Geared Threader Showing Pinion
Sleeve and Guide Post Reference Lines
3. Pull guide post up until guide block attached to selec-
tor plate is disengaged from angle slot in guide post.
4. Turn guide post until straight slot faces inward for
straight thread. For tapered threads set tapered
slot inward. Figure 16 shows guide post set to cut
tapered thread.
5. Engage guide block in slot and push guide post
down into position.
6. Replace guide post screw.
Unit is now set to cut straight threads (NPSM or BSPP)
or taper threads (NPT or BSPT).
Changing Die Set
1. Remove stop screw (Figure 17) from selector plate.
2. Pull Knobs (Figure 15) and rotate cam plate to CD
mark on top of die head.
3. Remove worn die set (Figure 15) and insert new die
set.
IMPORTANT! Be sure to replace complete die set. Die num-
bers must correspond with slot numbers.
4. Rotate cam plate to original position and replace
stop screw.
NOTE! If it becomes necessary to remove or replace
the guide block, the stamped number E-1997
on guide block must be AGAINST selector plate.
If stamped number is visible you will cut an UND-
ERSIZE thread.
Installing Nos. 141 and 161 Geared
Threaders (Close-Coupled Method)
1. Place threader on floor or workbench with drive shaft
up. Install No. 844 Drive Bar on threader drive shaft
and tighten two (2) set screws (Figure 15) .
Figure 17 – No. 141 Geared Threader with 844 Drive Bar
Installed (No. 161 Threader Similar)
2. Using two persons, pick up threader and insert drive
bar into chuck of Power Drive. Tighten Power Drive
chuck jaws into three “V” shaped grooves in head of
drive bar.
IMPORTANT! Allow approximately
3
/
4
″″
of V-shaped
grooves exposed in front of chuck jaws
(Figure 17) to allow space for oiling.
3. Close centering chuck on shaft of drive bar.
Guide Post
Head
Drive Shaft
Clamp Screw
Cam Plate
Knob (2)
Reference
Lines (3)
Die (Set of 5)
Guide
Block
2T Under
Line
Standard
LIne
2T Over
Line
Screw
Guide Post
Gear Case
Selector
Plate
Die Head
Stop
Screw
Red Stop
Line
Standard
Line
Pinion
Sleeve
Cam
Plate Knob