TM-9-2815-200-35 Maintenance Manual for AVDS-1790-2M AVDS-1790-2A and AVDS-1790-2AM Engines Download
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Section lV. REPLACEMENT OF COOLING FAN CLUTCH ASSEMBLY AND FAN DRIVE HOUSING OUTER FLANGE BEARING 4-7. General following the same procedure. For instructional This section covers the removal and in- purposes in this section, the rear fan clutch assembly has been used for typical procedure. stallation of the cooling fan clutch assembly and Refer to Table 4-3 for applicable illustrations the replacement of the outer flange bearing. The front and rear cooling fan clutch assemblies are and instructions required for removing or in- stalling cooling fan clutch and flange bearing. interchangeable. Replace both clutch assemblies Table 4-3. Cooling Fan Clutch Assembly Remove 1. Cut locking wire (A). 2. Remove 12 slotted nuts (B). 3. Install jack screws (5 / 16-24NF thread) (C) into three threaded holes in the fan drive housing cover. Alternately tighten jack screws until fan drive housing and clutch assembly are separated from housing. Remove jack screws. Install 1. Install 12 slotted nuts (B) securing fan drive housing and clutch assembly. 2. Install locking wire (A). Figure 4-99. Removing or installing rear fan drive housing cover attaching parts. Remove 1. Remove housing cover and clutch assembly (A). 2. Cut locking wire (B). 3. Remove six bolts (C) and flat washers attaching the oil seal housing to the cover. 4. Install two mechanical pullers -5120-473-7222 in oil seal housing puller screw holes (D). Turn pullers alternately to remove housing. Install 1. Position oil seal housing on cover and install six bolts (C) and flat washers securing housing on cover. 2. Install locking wire (B). 3. Install housing cover and clutch assembly (A). Figure 4-100. Removing or installing rear fan drive housing cover and clutch assembly. 4-50