TM 9-4940-556-14&P
6.15.1.7 Loosen set screw on blower hub, slide blower back on jackshaft
till it hits jackshaft drive pulley.
6.15.1.8 Remove the four bolts which hold jackshaft bracket to mounting
base.
6.15.1.9 Slide pillow block mounting base toward front of machine till
blower can be removed from the end of jackshaft.
6.15.1.10 To reinstall blower, reverse above procedure (6.15.1.1 -
6.15.1.10). Always align pulleys to prevent premature belt wear. Loosen set
screws on both motor pulley and jackshaft pulley. Check and adjust
alignment between pump and motor pulley. Tighten motor pulley. Check
and adjust alignment between motor and jackshaft pulleys. Tighten jack-
shaft pulley. If necessary retension belts as in 4.5.1.
6.15.2 Jack Shaft Drive belt Replacement.
6.15.2.1 Follow 6.15.1.1 thru 6.15.1.7 and 6.15.1.9.
6.15.2.2 Slide pillow block mounting base toward front of machine till
drive belt can be slipped over blower wheel and removed.
6.15.2.3 Install new belt over blower wheel and reverse above procedure
to re-assemble unit (6.15.2.1 - 6.15.2.2). Always align pulleys to prevent
premature belt wear. Loosen set screws on both motor pulley and jackshaft
pulley. Check and adjust alignment between pump and motor pulley. Tighten
motor pulley. Check and adjust alignment between motor and jackshaft pulleys
Tighten jackshaft pulley. If necessary retension belts as in 4.5.1.
6.15.3 Pillow Block Bearing Replacement.
6.15.3.2 Loosen set screw (s) holding pillow block bearing (s) to jackshaft.
6.15.3.3 Slide pillow block (s) toward fuel pump mounting bracket till it
comes off of the shaft.
6.15.3.4 To reinstall, reverse 6.15.3.1 thru 6.15.3.3. Always align pulleys
to prevent premature belt wear. Loosen set screws on both motor pulley and
jackshaft pulley. Check and adjust alignment between pump and motor pulley.
Tighten motor pulley. Check and adjust alignment between motor and jack-
shaft pulleys. Tighten jackshaft pulley. If necessary retension belts as
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