 |
|||
|
|
|||
|
Page Title:
CHECKING CAMSHAFT END PLAY AND CRANKSHAFT AND CAMSHAFT GEAR BACKLASH |
|
||
| ||||||||||
|
|
 261. CHECKING CAMSHAFT END PLAY AND
CRANKSHAFT AND CAMSHAFT GEAR
BACKLASH
a. Check Camshaft End Play. Figure 473.
(A) Tap camshaft gear retaining nut using a
soft- faced hammer and force camshaft and gear
toward rear of crankcase and cylinder assembly
as far as possible. (B) Mount dial indicator on
front plate so indicator point rests on end of
camshaft assembly. (C) Set indicator on zero
reading ("O"). (D) Insert heavy duty screw-
driver between camshaft gear and front plate
and move gear and camshaft through limit of
travel to check end play. End play must be
within 0.006 to 0.010-inch.
Note. When end play exceeds limits specified,
remove the camshaft gear and replace camshaft
thrust plate following instructions in (1) through
(5) below.
(1) Remove camshaft gear following in-
structions for figures 290 and 291.
RETAINING NUT.
(2) Remove and discard camshaft thrust
plate following instructions for fig-
(2) Figure 472. (A) Position a brass rod
ure 310.
between the teeth of the camshaft gear
and the crankshaft gear to hold gears
(3) Refer to figure 310 and reverse the se-
from rotating. (B) Install camshaft
quence of instructions to install new
gear retaining nut and tighten to 145
pound feet, using a torque wrench. Re-
camshaft thrust plate.
move brass rod after camshaft retain-
ing nut is properly torqued.
(4) Install camshaft gear following instruc-
tions for figures 471 and 472.
(5) Recheck camshaft end play following
instructions for figure 473.
Note. When end play is less than
dimension specified (fig. 473), remove
the camshaft gear and camshaft thrust
plate as outlined in (1) and (2) above.
Lap the thrust plate until the minimum
end play dimension is attained. Install
thrust plate and camshaft gear as di-
rected in (3) and (4) above, and recheck
end play following instructions in fig-
ure 473.
b. Check Crankshaft and Camshaft Gear
Backlash. Refer to figure 474 and check back-
lash between crankshaft and camshaft gears. If
backlash is not within limits specified, remove
and discard camshaft gear, crankshaft gear,
and fuel injection pump driven gear. Replace
all three gears as a set.
PLAY USING A DIAL INDICATOR.
302
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals