31
PMT - Rev. 05 - Sep/22
7. Adjustments and operations
Changing the gearbox speed
The transmission system uses a cardan shaft with friction discs and a fuse bolt (clutch).
The fuse bolt must be changed for another one when broke.
The clutch adjustment must be done according to the instructions on the 'friction' page.
A high speed of the chains on the row may break the stalk, therefore losing the corn
cobs and accumulating straw. This rotation can be adjusted by changing the sprockets for
a perfect adjustment to your farm.
The lateral transmission is used to change the rotation of the crop rows of the equipment.
The PMT leaves the factory with a
Drive shaft (A)
with
21 teeth
and a
Driven shaft (B)
with 24 teeth
. This adjustment may change according to the table on the 'gearbox speeds
table' page.
To change the sprocket, remove the lateral cover by loosening the bolts and spring
washers (C).
Remove the bolt (D) and flat washer that locks the sprocket to the axle.
Release the tightener (E) until the point that is possible to change the sprockets.
Place the chosen sprocket on its place and put the bolt (D) and flat washer again.
After assembling the sprockets check the chain tension, which is adjusted by sliding
the tightener (E) until the desired tension.
The chain must not work very loosely. We recommend a small clearance of about 1 cm
on its center, as it will bring a greater durability and will avoid its heating.
F
F
Drive
Drive
shaft (A)
shaft (A)
D
D
C
C
D
D
E
E
Driven
Driven
shaft (B)
shaft (B)
1 cm1 cm
IMPORTANT
- Use the tightener pin (F) that can be found on the components box to change the
drive (A) and driven (B) shafts.
- Repeat this process on the other side of the equipment.
Summary of Contents for PMT
Page 1: ...OPERATOR S MANUAL PMT PMT...
Page 60: ...58 PMT Rev 05 Sep 22 11 Notes...
Page 62: ...www marchesan com br...
