Middleby Marshall PS540E - Manual (Page 47)

SECTION 4
MAINTENANCE
43
E. Blower Fan Shaft Bearing Lubrication
CAUTION
Over-greasing damages the bearing seals and
accelerates grease loss, which shortens bearing
life. Wipe off any excess grease on and around
the bearing. Reinstall the rear shroud to allow the
oven to operate
Grease the two (2) main blower fan shaft bearings (Figure
4-43), using a special grease (MM P/N 17110-0015 lithium-
base, high-temperature grease). ONLY ONE STROKE of
a grease gun is required for each bearing.
Figure 4-43.
Upon completing the fan belt check (or replacement) and
the bearing lubrication, reinstall the rear shroud, fastening
it with six screws of the rear shroud.
F. Split-belt Conveyor Shaft Cleaning
It is very important that the split-belt conveyor drive and
idler shafts are removed from the conveyor frame for
cleaning and lubrication.
CAUTION
Use a turbine oil or light machine oil. DO NOT
USE WD40 or similar product. These oils
evaporate and cause the shafts to seize.
1. Perform the conveyor removal steps described in
Monthly Maintenance, paragraph “A”. After the conveyor
is removed, lay it on a flat surface.
2. Remove the two conveyor belts by disassembling the
conveyor master links, as described in Monthly Mainte-
nance, paragraph “H”. Then, remove the two conveyor
belts by rolling them up.
3. Remove the conveyor adjustment bolts to allow the
idler brackets to swing free.
Figure 4-44.
4. Drop the idler shaft assembly clear of the frame through
the front frame slot.
Figure 4-45.
5. Pull the front and rear shafts apart and apply oil to both
the extended shaft and the interior of the hollow shaft.
Using a rag, wipe oil off parts. Repeat until shafts are
clean. Apply more oil to shafts then reassemble.
Figure 4-46.