Service manual

6-26 WPM Drive Systems Manual

They are noise dampeners. Without them, when the

brake pad hits the drum, the drum will ring like a bell.

Also look at the two blade mounting bolts. Each has

a ﬂ at side on the head to prevent them from rotating

when the nut is tightened (Fig. 196). Make sure the

bolts are fully seated. Install the brake drum.

BBC / BOS / BCS

Fig 196 3428-0189

4. Inspect the hub assembly if the old one is to be

reused. Rust on the outside is harmless. But the

seals in the bearing need to be intact. If the seals

are damaged or the bearing feels rough when it is

turned, replace the hub assembly.

5. Start the nut on the crankshaft. As during

disassembly, an impact wrench works best.

Fig 197 3428-0187

CAUTION! The two bumps on the pulley MUST

engage the ﬂ ywheel. If you do not have an

impact wrench, this is where the two bumps

become important. If you engage the bumps on

the pulley into the ﬂ ywheel, you can now wedge

the ﬂ ywheel and through the pulley and key, it

will hold the crankshaft from rotating while you

tighten the nut (Fig. 197).

6. Slip the BBC belt over the parts on the crankshaft.

7. Check the shaft of the idler/brake arm. Clean as

necessary and apply a light coat of grease.