ALLIS-CHALMERS
Paragraphs 19-22
turn from either extreme position,
loosen locknut (87) and turn adjusting
screw (86) clockwise to reduce end
play. Be sure housing nuts (92) and
(93) are tight when making this ad-
justment. All end play in sector shaft
75
87
90
88
Fig. ACI6--aeminer steering gear assembly as vsetf in early production B and
C
models.
75.
Expansion plug
76.
Housing
77.
Worm £ shaft
78.
Shims & gaskets
80.
Housing cover
81.
Tube clamp
82.
Jacket tube
83.
Bushing
86.
Sector A shaft
86.
Ad justing screw
87.
Locknut
88.
Eccentric rivet
89.
Bushing
90.
Steering arm (ball arm)
91.
Sector shaft housing
92.
Housing nut
93.
Jam nut
94.
Conical lock ring
96.
Eccentric sleeve
96.
Oil seal
90 75 76
100
96 89
,^
Hg, ACir—koss steering gear assembly (exploded view) as used in later and current
production B, C, and all
CA
tractor models.
76.
Expansion plug
76.
Housing
77.
Worm A shaft
78.
Shims ft gaslcets
80.
Housing cover
81.
Tube clamp
82.
Jacket tube
83.
Bushing
86.
Sector & shaft
89.
Bushings
90.
Steering arm
96.
Oil seal
99.
Side cover
100.
Housing bracket
101.
Oil seal
103.
Snap ring
104.
Bearing cup
106.
Bearing ball
106.
Gasket
should be eliminated but gear should
not bind.
19.
GEAR MESH. To adjust gear
mesh, loosen column bracket clamp
and locate mid-position of gear by
turning steering wheel from one ex-
treme position to the other then back
half way. With gear in mid-position,
loosen housing retaining nuts
V4,
turn
and eccentric sleeve jam nut (93) V2
turn.
Slowly turn eccentric sleeve (9S)
clockwise while checking amount of
gear backlash by feeling play in ball
arm. (Turning eccentric sleeve clock-
wise moves steering gear housing
down in relation to sector shaft hous-
ing bringing worm and sector into
deeper mesh, thereby reducing gear
backlash.) Adjust eccentric sleeve un-
til play in ball arm is barly percepti-
ble,
when steering wheel is in mid-
position. Make last adjustment of the
eccentric sleeve in the clockwise di-
rection. After mesh adjustment is com-
pleted, tighten eccentric sleeve jam
nut, then housing nuts.
20.
CENTRALIZATION. Check gear
centralization by determining amount
of play in ball arm when wheel is
turned % turn to the right and %
turn to the left of mid-position. If play
is not the same on both sides of mid-
position, loosen housing nuts and ec-
centric sleeve jam nut V4 turn and
centralize gear by turning eccentric
rivet (88). If there is more play to the
right, turn rivet clockwise and if more
to the left, turn rivet counterclockwise.
After gear has been centralized, re-
adjust gear ijiesh with eccentric sleeve
as previously described. Ball arm
should be positioned on sector shaft so
that steering gear is in mid-position
when wheels are straight ahead.
21.
OVERHAUL. Gear unit should
be removed from tractor. Procedure is
readily evident from an examination
of Fig. AC16. When reassembling, in-
stall worm gear and shaft assembly
and adjust worm gear bearings before
assembling balance of steering gear.
For complete adjustment procedure,
refer to paragraphs 17 through 20.
B-C-CA-G-WF (Ross Gear)
(Refer to paragraphs 1, lA, IB, 3,
3A, 3B and 3C for models C-CA front
gear and to 16 through 21 for Gemmer
main gear.)
Before adjusting the gear, discon-
nect drag link or remove steering arm
to remove load from gear and permit
locating in mid-position.
22.
WORM SHAFT (CAM) END
PLAY. On B, C, and CA, first step in
making this adjustment is to remove
the fuel tank. To reduce play in cam
11
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