TM-9-2350-256-20-1

RECOVERY VEHICLE, FULL TRACKED: MEDIUM, M88A1

TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL VOLUME 1 OF 2

NOVEMBER 2005

TM-9-2350-256-20-1 - Page 903 of 948

TM 9-2350-256-20-1

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UNIT MAINTENANCE

RECOVERY VEHICLE, FULL TRACKED: MEDIUM, M88A1

NSN 2350-00-122-6826, EIC AQA

ENGINE COOLING FAN VERTICAL SHAFT OIL SEALS MAINTENANCE

REMOVAL, DISASSEMBLY, ASSEMBLY, INSTALLATION

INITIAL SETUP:

Tools and Special Tools

Tool kit, general mechanic’s (item 59, WP 0490 00)

Screws, cap (jackscrews) (item 50, WP 0490 00)

Materials/Parts

Compound, sealing (item 29, WP 0489 00)

Gaskets (2) (item 109, WP 0491 00)

Lockwires (2) (item 484, WP 0491 00)

Screws (12) (item 353, WP 0491 00)

Materials/Parts (cont.)

Seals, oil (2) (item 63, WP 0491 00)

Washers, flat (12) (item 843, WP 0491 00)

References

TM 9-2350-256-10

Equipment Condition

Cooling fans removed (see WP 0144 00)

NOTE

Removal and installation are the same for both the front and rear cooling fan oil seals.

Removal

1.

Cut and remove lockwire (1).

2.

Remove six screws (2) and six flat washers (3) securing vertical drive shaft oil seal housing assembly (4) to fan drive

housing cover (5).

3.

Install two 5/16-18 by 4 in.- (101.6 mm-) long jackscrews (6) in screw holes provided in oil seal housing assembly (4).

4.

Alternately tighten the two jackscrews (6) until oil seal housing assembly (4) separates from fan drive housing cover (5).

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