NTA907HD and NTA3007HD
Maintenance and Lubrication
Great Plains
| 166-207M | 02/26/2019
131
Marker Chain Length
If marker fails to reach ground when unfolded, or is
skipping field depressions, the chain is too short.
If marker drags across ground for more than 30cm (12in)
before lifting, the chain length is too long.
1.
Unfold marker.
2.
Adjust/set Marker Extension (page 162) before
adjusting chain length.
3.
Remove take-up bolt
.
4.
Re-insert bolt to obtain an approximate chain length
160 cm (63 in)
Tighten bolt.
5.
Fold, unfold and re-fold marker to validate new chain
length.
6.
Thread bolt in (up) until head is flush with inside jam
nut and both are flush with inside of channel.
7.
Slowly fold marker while observing disk. If marker
disk drags across ground more than 12in (30cm)
before lifting, the chain is too long.
Marker Grease S
eal
If grease-seal cap for marker disk hub bearings is
damaged or missing, disassemble and clean hub.
Repack with grease and install a new seal or grease cap.
Figure 150
Marker Chain
21888
1
2
Figure 151
Marker Bearing and Cap
18795
1
Summary of Contents for NTA3007HD
Page 2: ...Great Plains 166 207M 02 26 2019 Table of Contents Index ii 166 207M Table of Contents Index ...
Page 4: ...2SF24 and 2SF30 ...
Page 177: ...Table of Contents Index Table of Contents Index ...
Page 178: ...Great Plains Mfg 1525 E North St P O Box 5060 Salina KS 67402 Table of Contents Index ...