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 (j) Loosen nuts on both ends of the cam
hands and rocking in relation to the
and balance shafts. Remove nuts (9 and 30). Do not remove
bearing. If there is any wobble. shake, or
nuts (20 and 35) at this time.
end play. the bearing MUST be replaced.
(k) Remove the lockwashers (8 and 29).
If the gear is satisfactory, it is only
(l) Use two heavy screwdrivers, or pry
necessary to check the pre-load before
bars, (one on either side of shaft) between bearing capscrews
reinstallation
(4) and the balance weight, to force the balance weights off
the shafts.
(q) Remove the bolt and washer securing
(m) Remove the two thrust washers (6 and
the idler gear to end plate and cylinder block, then lift idler
27) off the hub.
gear, hub, and spacer from the end plate.
(n) Remove
capscrews
(4)
and
(2) Disassembly.
lockwashers (5) from the rear bearings (17 and 32) by
(a) Support the cam, or balance shaft, in
inserting a socket wrench through the holes in the webs of the
soft jaws of a bench vise. Be careful not to damage the cams,
cam and balance shaft drive gears (18 and 33).
or thrust shoulders.
(o) Withdraw the camshaft (1), bearing
(b) Remove nut (20 and 35), then use a
(17), balance shaft (25), and bearing (32) from the rear end of
suitable puller and remove gear from the shaft. If necessary,
the cylinder block.
remove capscrews (24 or 39) and weights (23 or 38). Also, if
(p) Remove
capscrews
(4)
and
necessary, remove the machine keys (11) from the shafts.
lockwashers (5) from bearings (3 and 26), then withdraw
(c) Slide the rear bearing (17 or 32) from
bearings from the front end plate and cylinder block. If the
the shaft.
two remaining thrust washers (6 and 27) were not withdrawn
(d) Remove the two lockrings (15) from
with the shafts, remove them at this time.
each of the three intermediate bearings (14) and free the two
halves.
NOTE
(e) Disassemble the idler gear as follows:
Before removing the idler gear, check the
1. Remove the six bolts (fig. 5-28)
gear, hub, and bearing for any perceptible
and three lockplates which secures bearing retainer to the
end play, wobble, or shake by firmly
idler gear.
grasping the rim of the gear with both
Figure 5-28. Idler gear details and location of parts.
2. Clean the idler gear and bearing
NOTE
assembly with fuel oil and blow dry with compressed air.
Component parts of the idler gear bearing
3. Position the gear and bearing in
are mated; therefore, match mark the parts
an arbor press with bearing cone (inner race) supported on
at disassembly to assure return to their
steel blocks. While rotating the gear rim, press the hub out of
original position.
the bearing. Remove gear from the arbor press, then remove
the bearing cones and spacer.
5-32
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