Hardinge SUPER-PRECISION HC - Page 15

10. Coat pawl "B", Figure 31, with M-88 Molylube
and replace .
11. To reassemble cover "O ", Figure 25:
(a) If removed, press needle bearing "Q", Fig-
ure 30, and seal "R" in cover .
(b) If removed, replace pawl block "N", Figure
27, dowel pin "P ", and two screws "O",
Figure 30 .
(c) Coat with M-88 Molylube and replace lock
plunger " H", Figure 27. Turn stop screw in
hole " G", Figure 28, into elongated slot in
plunger "H", Figure 29 . Bottom stop screw
and back off approximately one turn .
Replace lock screw "G " , Figure 28.
(d) Replace pin "M", Fi gure 29 , spring "L"
and screw "K" .
(e) Coat plunger release bar " F ", Figure 27,
with M-88 Molylube and replace . Replace
spring "E" , block ''D ", and screw "C" .
(f) Replace O-ring "B ". Coat with M-88 and
replace pawl " A" .
12 . Replace plunger spring " Q ", Figure 26, and
plunger "P " .
13 . With plunger release bar " F" , Figure 27, in
unlocked position as shown in Figure 27, start re-
placement of cover " O" , Figure 44. As cover " O" is
advanced push pawl "A " in to clear casting , pull
cycl e s tart knob "B" and push pawl po st " C" , in that
order. Repla ce four s crews " N " , Figure 25. Adjust set
screw " K ", Figure 29, for six pounds pull to cock
plunger " H " . Replace lo ck screw "J" .
14 . Replace key " M" , Figure 25.
15 . Replace dial assembly " L" , Figure 24, replace
dial nut " K" a nd tighten two screws "J " .
16. Pull a nd se t whit e dial as c lo se to 70 as it will
engag e. Turn s top scre w in hole " L ", Figure 35 , to
bring the 70 graduation lin e to the center of zero
plug in cover . Replace lock sc rew in hole " L ".
F igure 43 - Cam and Ca msha ft Remova l
13
Fi gure 44 - Cover Re pl ace men t
17. Replace chasing head on chasing bar and
tighten two bolts " H ", Fi gure 23.
18. Re pla ce micro switch cab le and cable grip
"E", Figure 22. Replace O -r ing for mi c ro switch .
19. Follow steps 5 through 8 under " Cycle Stop
M icro Switch R eplacement" Pag e 8.
20. With t hrea d in g he ad engaged pull cycle start
k nob and while holding threading head , loosen two
bolts "H " , F ig ur e 23. Set threading head at 20 ° off
vertical Figure 45. Tighten bolt s " H" .
21. Repl a ce bracket "F ", Figur e 23 per instructions
under " Gu i de Bar Support Bracke t" in operator 's
ma nu al.
Fig ur e 45 - Setting T hr ea ding H ead Angle