TM 5-3810-300-24&P-3
1.7.6 BLOWER DRIVER GEAR
Fig. 5 - Typical Blower Drive Gear Details and Relative Location of Parts
51.
Seal--Drive Cover
57.
Nut--Drive Gear Hub
69.
Spring (Pack)--Drive
76.
Elbow--Oil Pipe
52.
Clamp--Cover Seal
58.
Lock Washer
Coupling
99.
Cap--Oil Filler
53.
Gear--Blower Drive
61.
Support--Drive Gear
70.
Seat--Coupling Spring
100.
Strainer--Oil Filler
54.
Hub--Drive Gear
Hub
71.
Retainer--Drive
101.
Seat--Coupling
55.
Lock Ball
63.
Gasket
Coupling
Spring End
56.
Washer--Drive Gear Hub
67.
Support--Drive Coupling
72.
Bolt--Drive Coupling
102.
Washer--Thrust
Thrust
68.
Cam--Drive Coupling
73.
Lock Washer
c. Apply engine oil to the drive coupling springs
7. Place the coupling support against the drive gear
(there are 21 leaves in each spring pack) and
with the blower drive shaft ring groove in the cam
insert them in the coupling support.
facing away from the drive gear. Then, place the
drive coupling retainer (71) against the coupling
d. Place the blower drive cam (68) on the in-staller
support with the flared edge away from the support.
J 1471, insert the round end of the tool between
Revolve the coupling assembly on the hub flange
the spring packs (69) and press the cam into
until the cam lobes are in line with the oil grooves in
position (Fig. 6).
the gear hub (Fig. 7) to ensure proper lubrication.
8. Install the drive coupling bolts.
Install Blower Drive Gear and Support Assembly
1. Check the clearance (Fig. 2) between the drive
support and gear hub thrust washer on current
engines or between the drive support bearing flange
and the gear hub thrust washer on former engines,
before installing the blower drive gear support
assembly. The clearance on the current engines
must be .006" to .014" and on the former engines
with the flanged bearing .005" to .008".
2. Place a new gasket (63) on the mounting face of the
hub support (Fig. 5).
3. Attach the blower drive gear and support assembly
to the cylinder block rear end plate with the two 3/8"-
Fig. 6 - Inserting Blower Drive Cam
24 x 7/8 bolts.
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