TM-9-2815-213-34
ENGINE, DIESEL, WITH ACCESSORIES CUMMINS MODEL V8-300 (2815-910-8217)
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL (INCLUDING DIRECT SUPPORT AND GENERAL SUPPORT REPAIR PARTS LIST AND DEPOT MAINTENANCE ALLOWANCES)
FEBRUARY 1972
TM-9-2815-213-34 - Page 84 of 192
*TM 9-2815-213-34
Section XXV.
Repair of Fan,
Fan Hub,
and Bracket Assembly
3-137.
Disassembly
(fig.
B23).
a
. Remove six cap screws (1) and lockwashers (2)
securing fan (3) fan spacer (4) pilot spacer (6) to seven
sheave pulley (11).
b
. Pull cotter pin and remove nut (7) washer (8)
from shaft (13).
c
. Press shaft from pulley.
d
. Remove bearings (9) and oil seal (12).
e
. Using suitable puller remove bearing outer races
(10).
3-138.
Cleaning
Clean all components in accordance with procedures in
paragraph 2-5.
3-139.
Inspection
a
. Inspect bearing cone and rollers,
and tape roller
bearing cup (rear).
Replace if damaged,
rough or worn.
b
. Inspect threads for stripped or crossed threads.
Replace all damaged parts.
c.
Inspect fan hub nut,
idler seal,
and idler fan hub
shaft for damage or wear.
Replace if damaged or worn.
d
perform general inspection in accords with
paragraph 2-6.
3-140.
Repair
Repair of the assembly is limited to the instructions in
paragraph 2-7.
3-141.
Assembly
CAUTION
Aline shaft in bearing before pressing.
Use only enough pressure to slide
bearing over the shaft.
a
. Using suitable arbor press install o races of
tapered bearings into fan hub hour with cupped area up.
Outer races must against shoulders provided in housing.
b.
Pack bearing cones of both bearings ’with GAA.
c.
Install pipe plugs in housing.
Seal plugs with
sealing tape or sealer to prevent leaks.
d
. Install rear bearing inner race with largest inside
diameter into rear of fan hub and press new oil seal into
housing flush with bore.
e
. Install shaft through oil seal and bearing inner
race.
Seat with light tapping of a soft hammer or press.
f.
Fill cavity between bearings ½
to %
full of GAA.
g
. Install front bearing,
clamp washer,
and
retaining nut.
h.
Slowly rotate housing around spindle and at the
same time tighten retaining nut until a small "drag" is felt
during rotation of housing.
CAUTION
Hub must be rotated while nut is being
tightened.
Failure to rotate hub will
result in excessive end play.
i.
Tap fan hub assembly lightly with a soft hammer
to relieve clearances.
Check shaft end clearance.
It
must be 0.001/0.007 inch and the hub must rotate freely.
Loosen or tighten nut and repeat step h above,
if
required.
Lock retaining nut with cotter pin.
j
. Apply GAA to outer bearing.
Assemble new
gasket,
spacer,
and fan to pulley assembly with
lockwashers and cap screws.
3-142.
Installation
a
. Install fan assembly bracket on block (fig.
24)
and secure with six cap screws and lock- washers.
b
. Position flatwasher on shaft and insert shaft in
bracket.
Secure with flatwasher and lock nut.
c
. Install adjusting bolt in bracket and through
shaft.
d
. Set hydraulic pump drive belt on inner sheave,
and two alternator drive belts on next two sheaves.
e.
Install three drive belts from crankshaft drive
pulley to three outer sheaves of fan drive pulley.
Section XXVI.
Repair of Hydraulic Pump and Mounting Bracket
NOTE
If engine is received for repair without
the power steering pump (hydraulic
pump),
bracket,
pulley and drive belt,
do not requisition these items for instal-
lation on the repaired engine.
The re-
paired or rebuilt engine will be shipped
to the using unit without the pump assembly.
3-143.
Disassembly
(fig.
B-26).
a
. Remove swivel elbow (7) and nipple (6).
b
. Remove adapter (10) bushing (9) and elbow (8).
3-55
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