
7. If lever arm is bent slightly it is easier to bend
back than replace lever.
8 The linkage should move freely with no
binding.
Assembling
Reverse of above.
Move motor towards rear of machine when
ti_=1ltening bolts.
Spindle Belt Replacement:
Ref. page 16 and page 22
METHOD J=1:.- Without tool for removing spring
cartridge from motor pulley:
1. Adjust spindle spec.d to loo RPM.
2. Remove cover 52-l2UU5 from top of head.
3. With motor off. adjust spindle speed setting to
22OO RPM.
4. Remove four 3/8 Hex. Hd. Scr. from motor
flange & place r board under front of motor.
5. Loosen set sc.rows Det. 62 and push fork hinge
pins Dot. 9l from fork.
6. Lift fork 52-l2164, gimbal rings 52-12162 &
52-l2163 and top half of spindle pulley 52-12008 up
until pulley hits bottom of motor flange.
7. Lift fork and remove from head.
8. Remove drum switch from side of belt housing
(do not disconnect wires)
9. With aid of crane or additional man lift motor
and top half of spindle pulley up until spindle pulley
is off shaft. Note: Guide belt through opening in
belt housing.
lO. Turn motor on its side and place on belt hous-
ing.
I I. Wedge a piece of wood between the two halves
of the spring loaded motor pulley.
l2. Remove old belt from motor pulley.
Installation:
1. Place new belt around motor pulley.
2. Hold belt around pulley so that it does not
slip out and remove wedge.
3. Lift nlOtOr and Place end Of belt Over spindle
splines, assemble top halt of spindle pulley. Guide
belt through opening in belt housing and mount
"notor. Move motor towards rear of belt housing
as far as possible before tightening screws.
4. Lift top half of spindle pulley until it tout;hes
motor and assemble fork with glmbal ring and nut
52-12169. Replace fork hinge pins and tighten set
.Screws.
5. Replace drum switch.
6. Adjust spindle speed with motor off, until top
half of spindle pulley lightly contacts belt.
7. Start motor and check that fork is working pro-
perly when spindle speed is adjusted.
8. Replace top cover.
METHOD #2: With tool TL-5512 for removing
spring cartrldge from motor pulley.
1. Adjust head speed to 2400 RPM.
2. Using 7/l6 socket remove grease fitting in end
of spring cartridge.
3. Insert shaft of clamp tool and tighten handle
until spring pressure js off retaining ring. Remove
retaining ring. Loosen clamp.
4. Remove clamp and stud.
5. Remove 4, 3/8" hex hd. SCr,S. from motor flange.
Hold vari speed cartridge. Move motor to center of
opening in varl speed housing and remove cartridge.
6. Remove motor.
7. Remove cover 52-l2005.
8. Remove two pins Detail 9l which vari speed
fork 52-I 2164 piyots on. Lift out fork, sliding gimbal
ring and top half of spindle pulley 52-l2008 up and
off. Some servicemen find it more convenient to
remove front cover 52-l2014 at same time as re-
moving fork.
lmstructions for Replacing Quill Return Spring:
Ref. See. "ee", page 22 and page l7
I. Place piece of wood on table and position table
so there is approximately 6l/2 inches between end Of
spindle and board.
2. Loosen set screw Det. l24 holding top of stop
screw No. 52-ll873. Unscrew stop screw approxi-
mately 5 inches. Remove stop block 52-ll872 by
removing Soc. Hd. Scr. Det. l25.
3. Move quill down approximately 5 inches.
4. Place scriber in hole in guard located in quill
stop slot in body. Lift up and move to the left I inch.
5. Securely hold end of quill and feed quill down
by hand feed lever until feed gear disengages quill
rack.
6. Hold quill in this position while the spring ten-
sion on hand feed lever is released by turning lever
back. (no tension when spring is broken).
7. Remove set screw Det. l28 and unscrew worm
No. 52-l2O38.
8. Remove head flange worm gear No. 52-l1876.
Two holes are tapped for 7/16-l4 screw to jack
worm gear out.
9. Remove spring retaining nut No. 52-l2186.
10. Remove broken spring No. 52-11984 on hub
No. 52-12187.
ll. CAUTION: If spring 52-11984 is not broken a
spring retainer must be used when removing spring.
Tighten spring tension by turning hand feed lever
clockwise until O.D. of spring is 2.75 inches. Slip
2.8 I.D. retainer around spring. Slowly release feed
handle.