Belt Replacement Tensioning And Sheave Alignment For Top Mount; Figure 99 - Alignment Using Straight Edge; Figure 100 - Alignment Using String - Pace PAI Installation And Assembly Manual

SECTION 3 - HANDLING, STORAGE, AND INSTALLATION

Figure 99 - Alignment Using Straight Edge

Figure 100 - Alignment Using String

BELT REPLACEMENT TENSIONING
AND SHEAVE ALIGNMENT FOR TOP
MOUNT
Use the following instructions to align the sheaves on
the motor base:
1. To remove the old belt, loosen the mounting hard-
ware on the drive side of the motor base. The
drive side has two adjusting screws. Do not in-
crease the left side more than 1/2 inch before in-
creasing the right side.
2. Remove the tension from the belt on the lower
drive side, using the adjustment screws as shown
in Figure 101 on page 64.
3. After the tension is removed from the belt, loosen
the mounting hardware on the opposite drive side
of the base.
4. Continue to lower both ends of the base until the
belts can be removed as shown in Figure 102 on
page 64.
5. After the sheaves are checked for parallel alignment
as shown in Sheet 1, place the belts on the sheaves.
Form PA102.20-N1
Straight Edge Touching Sheaves At Points Indicated By Arrows
ALIGNMENT USING STRAIGHT EDGE
Cord Tied To Shaft
Cord Touching Sheaves At Points Indicated By Arrows
ALIGNMENT USING STRING
6. To take the slack out of the belt(s), start raising the
base in 1/2 in. increments, using the adjustment
screws on both ends.
7. As the belts start to tighten, check for parallel mis-
alignment by placing a straight edge across the
outer face of the sheaves as shown in Figure 103
on page 64. The straight edge should be long
enough to extend past both sheaves.
8. If the sheaves are misaligned as shown in Figure
101 on page 64, raise the opposite drive side.
As the belt tension increases, the op-
posite drive side of the belt will rise.
Ensure the mounting hardware on the
opposite drive side is secure.
9. Continue to tighten the belt(s), using the drive
side the adjusting screws.
10. If the sheaves are still misaligned as shown in Fig-
ure 102 on page 64, make sure the belt tension
is correct, then secure the mounting hardware on
the drive side.
63
Installation & Assembly Manual │ PACE
LD09646a
Issue Date: 07/03/2018
3
LD09646