Table of Contents
Advertisement
Drive Chain Maintenance
Checking and Adjusting the
Drive Chain
Service Interval: After the first 10 hours
Every 50 hours
The drive chain should have 5 to 10 mm (7/32 to
13/32 inch) of flex when applying 6.8 kg (15 lb) of
pressure at mid-span.
Checking the Drive-Chain Tension
1.
Remove the divider plate; refer to
Divider Plate (page
2.
Place a straightedge along the chain from 1
sprocket to the other
Figure 41
1. Flex of 5 to 10 mm (7/32 to 13/32 inch)
3.
With your finger, push on the chain with 6.8
kg (15 lb) of pressure, midway between the
sprockets
(Figure
4.
Measure the distance from the chain to the
straightedge; the distance should be 5 to 10 mm
(7/32 to 13/32 inch). If the chain tension needs
adjustment, refer to
Tension (page
32).
5.
Install the divider plate; refer to
Divider Plate (page
Adjusting the Drive-Chain Tension
Note:
Adjusting the tension of the drive chain affects
the tension of the belts; adjust the belt tension after
adjusting the drive-chain tension.
1.
Remove the divider plate; refer to
Divider Plate (page
Removing the
25).
(Figure
41).
41).
Adjusting the Drive-Chain
Installing the
26).
Removing the
25).
2.
Loosen the nuts and bolts that secure the
pillow-block bearings for the idler pulley
42).
1. Drive chain
2. Pillow-block bearings
3.
Slide the pillow-block bearings, along with the
idler pulley and small sprocket, to the right
to increase the chain tension, or to the left to
decrease the chain tension.
Note:
To slide the pillow-block bearings to the
left, you must loosen the jam nut and tensioner
bolt
(Figure
bearings to the right, you must loosen the motor
mounting nuts and bolts
g021606
1. Tensioner bolt
4.
When the chain has 5 to 10 mm (7/32 to 13/32
inch) of flex, tighten the tensioner bolt, the jam
nut, and the nuts and bolts that secure the
pillow-block bearings.
5.
Adjust the belt tension; refer to
Belt Guide (page
6.
Install the divider plate; refer to
Divider Plate (page
32
Figure 42
3. Bolts (4)
4. Idler pulley
43). To slide the pillow-block
(Figure
35).
Figure 43
2. Jam nut
Adjusting the
30).
Installing the
26).
(Figure
g021602
g021605
Advertisement
Table of Contents
