7. M
AINTENANCE
H
I
R
OLLER
- B
ELT
C
ONVEYORS
7.5. L
INER
- B
OTTOM
R
ETURN
P
AN
H
I
R
OLLER
, M
INI
R
OLLER
, L
O
R
OLLER
& H
I
L
IFE
104
P115506 R3
Figure 7.24
•
Pop Rivets, Floating Liner
- after 2002: The bottom return pan liner has
been held in place since 2002 with special pop rivets. The pop rivets are spe-
cially installed to allow the liner to float. The bottom metal pan is slotted to
allow the liner to float, expand, and contract with temperature changes. The
pop rivets are installed with special equipment at the factory. See Figure 7.25.
Figure 7.25
7.5.2. R
EPLACEMENT
To replace and reinstall the bottom return pan:
•
Pop Rivets, Fixed Liner
- prior to 1998: First, remove all old pop rivets. The
new UHMW liner must be installed with new pop rivets in newly drilled holes
in the metal bottom.
•
Truss Head Bolts & Locknuts, Floating Liner
- 1998 to 2002: First remove
all old bolts, washers, and nuts. It is recommended that they be replaced with
new fasteners. See the description and illustrations on the following pages.
•
Pop Rivets, Floating Liner
- after 2002: The pop rivets holding the liner must
be removed. The new liner must be installed with truss head bolts and lock-
nuts. See Figure 7.26. Liner replacement can be done with the pan installed
or removed. See Figure 7.27.
