4-44. PULLEY (SHEAVE AND BUSHING) REPLACEMENT.
This task covers:
General Safety Instructions:
High voltage and exposed rotating parts are
used in the refrigeration unit. Personal injury
can result if power is connected
Remove three bolts (1) and install two bolts back into threaded holes in bushing (2) Tighten bolts evenly
to separate bushing from sheave (4). Remove two bolts from bushing.
Slide bushing (2) and sheave (4) off fan drive shaft (5) being careful not to lose keys (3) and (6) Remove
Install key (6) than slide sheave (4) and bushing (2) onto fan drive shaft (5) Aline bushing over key.
Install key (3) then aline sheave (4) with key and slide onto bushing (2).
Install three bolts (1) and tighten evenly to secure sheave (4) to bushing (2).
Figure 4-39. Sheave
Connect power and put unit back into service