Mathey Dearman Band Machine - Manual (Page 27)

27
Table 7
– Trouble Shooting the Band Crawler
Symptom Probable Cause Corrective Action
Crawler Legs
rotate and
Crawler will
not move
1. Tension Springs (23) have improper adjusted. 1. Adjust Spring Tension. See Instruction “A”.
2. Wheel is heavily grooved 2. Replace Wheel Assembly (14) See Instruction “B”.
3. Crawler is trying to carry to much weight
around the pipe. 3. Use a 1 3/8” diameter machine torch with a 10”
long barrel.
4. Edges of Band are rounded or Uneven. 4. File band to a sharp Edge or replace Band.
The Wheel(s)
will not
Rotate When
Turning the
Crank Handle
1. Swivel Nut is loose. 1. Tighten Swivel Nut on Crank Handle Assembly (26).
2. Tip in side bore of Coupling on the Worm
Gear Shaft Assembly (11). 2. Replace the Worm Shaft Assembly (11).
See Instruction “D”.
3. The Cables of Worm Gear Shaft
Assembly(S) (17) is sheared. 3. Replace Worm Shaft Assembly (11)
See Instruction “D”.
4. The Setscrew in Brass Gear of the Worm
Shaft Assembly(S) is sheared. 4. Tighten Setscrew in Brass Gear.
See Instruction “B”.
5. Spring Pin connecting the Worm to the Worm
Shaft Assembly (11) is sheared. 5. Replace the Worm Shaft Assembly.
See Instruction “D”.
6. The inner Cable of the 9’ or 14’ Flexible Drive
Cable is not connected correctly to the handle
end or the Crawler Body.
6. Disconnect the Flexible Drive Cable from the
Crawler Body. See Instruction “E”.
7. Torch is too close to the wheel(s) causing the
bearing to seize because of too much heat.
7. Replace the Worm Gear Shaft Assembly(s) (17).
See Instruction “B”.
Wheels are
heavily
Grooved
1. To much Spring (23) tension on the legs
1. Use only enough spring tension to rotate the
Crawler around the Band. See Instruction “A”
2. Replace Wheel Assemblies (14).
See Instruction “A”