TRUCK SERVICE MANUAL
ENGINE
7. Withdraw drive gear bushings (6 and 11) and driven
gear (10) from support. Remove snap ring (4), bearing
(25) and seal (3) from support.
8. Check all parts for cracks, breaks, wear or rough
mating surface. Replace bushing if worn beyond limits
as shown in Table 9-1(6-11).
ASSEMBLY
1. Press driven gear (10) onto drive shaft (5) to distance
of 3.435 to 3.440 inch [87.25 to 87.38 mm].
2. Press drive gear bushing (11) into bottom of support.
3. Press long end of drive with gear into top of support.
Clearance between gear face and bushing must be 0.015
to 0.040 inch [0.38 to 1.02 mm]).
4. Press second drive gear bushing (6) into top of
support over drive gear. Clearance between gear face
and bushing must be 0.015 to 0.040 inch [0.38 to 1.02
mm].
5. Install oil seals (9 and 21) into top and bottom of
support and seat against bushings. Install adapters (7
and 22) in support. Install dust caps.
6. Press seal (3) and bearing (25) into support; secure
with snap ring (4). Install key (2) in shaft (27) and press
gear (26) onto shaft against shaft shoulder.
7. Install spacer (12) and press hourmeter drive gear
(19) onto shaft (27). Press drive gear assembly into
support.
8. Install key (2) and press governor drive gear (24) onto
shaft. Install spacer (13) and press on drive coupling
(14). Install locknut (if used).
9. Install slinger (1) or press on bearing as used.
DRIVE PULLEYS INSPECTION AND REPAIR
1. Check for cracks and chips in hub, web and groove
areas and for wear in grooves and oil seal sleeve. If
wear on sleeve is visible:
a. Remove worn oil sleeve by splitting with chisel. Do
not damage pulley hub.
b. Press new sleeve onto pulley hub with mandrel, until it
is flush to 0.015 inch [0.38 mm] below face of hub.
Consult latest Parts Catalog for correct pulley/sleeve
combination.
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