Gradall G-550C Operation And Maintenance Manual page 33

G-660C & G-880C GRADALL (Crawler)
In order to do a qualified job of measuring track component wear, the following tools
are recommended:
1 - Rule
WHEN TO REPLACE TRACK PARTS
To assure good and long life for your crawler under-
carriage, we are providing wear limits. For normal
operation, 100% is the time at which the part should be
replaced to repaired. For tough applications, use the
75% measurement.
TRACK MEASURING TOOLS
1 - Large Calipers
1 - Feeler Gage
1 - Small Calipers
1 - 12" Rule
1 - 6" Rule
TRIPLE GROUSER TRACK SHOES
MODEL NEW
G-660C 1.062"
G-880C 1.0"
TRACK CHAIN LINKS
MODEL NEW
G-660C 3.812" 3.750"
G-880C 4.0"
33
OPERATION & MAINTENANCE
1 - 9" Depth Gage
1 - Putty Knife
25% 50% 75%
.937" .828" .671"
.859" .750" .593"
25% 50% 75%
3.7" 3.6"
3.95" 3.92" 3.86" 3.76"
100%
.515"
.437"
100%
3.5"