TM 5-3895-346-14
ENGINE OVERHAUL
ENGINE COOLING FAN
necessary to tap the end of the shaft with a soft hammer to loosen the hub assembly.
4. Remove the oil seal and bearing from the fan hub.
5. Remove the bearing spacer, shims and grease retainer.
4-53 ENGINES:
1. Remove the fan hubcap (if a spacer and cap assembly were not used).
2. Remove the hub retaining cotter pin, nut and washer (Fig. 5) or the bolt and special washer (Fig. 6
and 8). Also remove the shims if the former type fan hub assembly illustrated in Fig. 6 is used.
3. Withdraw the hub and bearing assembly from the shaft. It may be necessary to tap the end of the
shaft with a soft hammer to loosen the hub assembly.
Figure 4. Roller Bearing-Type Fan Hub
Figure 5. Shaft-Type Fan Hub
Assembly (In-Line Engine)
Assembly
4. Remove the seal and bearings from the fan hub.
5. Remove the bearing spacer (Fig. 6 and 7) and shims (if the current-type hub assembly is used).
INSPECTION
Clean the fan and related parts with clean fuel oil and dry them with compressed air.
CAUTION
Do not wash the permanently sealed bearing which is used in the inline engine roller
bearing hub assembly. Wipe the bearing and shaft assembly with a clean, lintless cloth.
Hold the inner race (shaft of sealed ball bearing assembly) and revolve the outer race of the bearing slowly by
hand. If rough or tight spots are detected, replace the bearing.
The current fan shaft rear bearing inner race should be inspected for
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