TM 5-3820-239-15
56 Sprocket shaft
40
Worm housing stud (4)
57 Inner worm whhel bearing
41
Screw, cap, hex-hd, 1/2-13 x 1 in.
42
58 Sprocket key
Washer, lock 1/2 in. (4)
43
59 Sprocket
Housing cap
6 0 Sprocket shaft gear seal
44
Housing cap shim
45
61 Sprocket spacer
Pipe plyg, 1/8 in. (2)
46
Lubrication fitting, 1/8 in. (2)
62 Worm shaft grease seal
47
63 Worm shaft
Idler wheel shaft (2)
48
Idler wheel (2)
64 Inner worm bearing
49
65 Long worm spacer
Idler wheel bushing (2)
50
66 Worm
Cotter pin (2)
51
67 Worm key
Sprocket shaft nut, 5/8-18 (2)
52
Sprocket shaft washer, 5/8 in. (2)
68 Short worm spacer
53
Outer worm wheel bearing
69 Outer worm bearing
Worm wheel
54
70 Gear case shim
55
Worm wheel key
71 Worm housing
(4) Alining the Woodruff key with the
6-13. Reassembly
slot in lower throw crank (90), in-
a. Complete Drill Guide. Reassemble com-
stall the crank pinion and attached
plete drill guide in reverse of numerical se-
parts.
(5) Using a suitable hearing pusher to
b. Drill Mounting Plate. Reassemble drill
bear on the inner race, install upper
mounting plate in reverse of numerical se-
crank bearing (84) on upper throw
crank (89). Install nut (83).
c. Centralizer. Reassemble centralizer in re-
(6) Mesh an inside connecting rod (94)
verse of numerical sequence as illustrated on
with an outside connecting rod (93),
and press connecting rod bushing
d. Air Feed Motor. Reassemble air feed
(92) into the rods. Repeat the pro-
motor in reverse of numerical sequence as
cedure for the other set.
Follow the procedure specified below:
(7) Install crank pin sleeves (91) on
shafts of upper and lower throw
Note. Coat all parts with clean engine oil as an
cranks (89 and 90), and insert the
aid in reassembly.
connecting rod bushings, with at-
tached connecting rods and pistons,
in cylinder case (96) using cylinder
into the crank pin sleeves.
liner keys (79) to aline the keyways
(8) Insert pinch bolt (88) through the
of the cylinder liners. Use a hammer
wrong side of crank center piece (95
and wooden block to seat the cylinder
to spread the web.
liners. Install cylinder liner caps
(39).
(9) Insert the assembled throw cranks
(2) Install connecting rods (93 and 94)
into crank center piece (95) so that
the"X" marked on the end of the
piston wrist pins (81).
crank and the crank center piece are
(3) Insert Woodruff key (74) in the key-
matched. Aline the pin holes and
way of crank pinion (73). Using a
lightly tap in crank pins (85). Re-
suitable bearing pusher to bear on
move the pinch bolt (88), and insert
the inner race, install lower crank
bearing (75) on the crank pinion.
Install castellated nut (87), tighten
nut and bolt securely, and install
Note. Do not install crank pinion bear-
cotter pin (86). Spread the ends of
ing (72) at this time.
6-13