TM 5-3805-281-24-1
Group 15
Diagnostic Information
DIAGNOSE UNDERCARRIAGE COMPONENTS MALFUNCTIONS
NOTE: Diagnose malfunction charts are arranged from
most probable and simplest to verify, to least
likely and most difficult to verify.
Symptom
Problem
Solution
Noisy or Loose Track Chain
Incorrect track tension adjustment
Adjust track sag. (See Group
9020-20.)
Loose shoes
Remove loose shoes to clean
material from between shoe and link.
Install shoes and tighten cap screws
to specified torque. (See Group
0130.)
Grease leaking from track adjuster
Inspect between second and third
seals or relief valve
roller, at base of relief valve, and at
hole in side of relief valve for
leakage. Replace seals or relief
valve. (See Group 0130.)
9020
15
1
Tight Track Chain
Material packing in sprocket
Adjust track sag with material
packed in sprocket. (See Group
9020-20.)
Track sag less than specification
Adjust track sag. (See Group
9020-20.)
Frequent Track Chain Sag
Grease leaking from track adjuster
Inspect between second and third
Adjustment Required
seals or relief valve
roller, at base of relief valve, and at
hole in side of relief valve for
leakage. Replace seals or relief
valve. (See Group 0130.)
Excessive Oil Leakage From
Loose plug, worn or damaged
Repair roller or idler. (See Group
Idlers And Rollers
O-ring, or metal faced seal
0130.)
Bent Track Shoes
Excessive grouser wear
Measure grouser height. (See
procedure in this group.) Rebuild
grousers or replace shoes.
Continued on next page
CED,TX08227,3152
1930MAY981/2
