Volvo FM Handbook page 168

Change between high splitter and low
splitter
Change within the same gear:
1 Begin with the splitter gear in position L, low
splitter. The symbol for low splitter lights up.
2 Change the splitter gear to position H, high
splitter
3 Wait for suitable engine speed
4 Push the clutch right down
5 The gear will engage and the low splitter symbol
will go out
6 Release the clutch
Change to the next gear:
1 Set the position control in position L, low splitter
2 Wait for suitable engine speed
3 Push the clutch right down
4 Put the gear lever in the next gear position
5 The gear is engaged and the symbol for low
splitter lights up
6 Release the clutch
Change down in the same way.
If the clutch is not depressed completely the gear
change can be delayed, the gearbox can get into
neutral and the synchronising can be damaged.
When starting in crawler gear, the splitter control must
be used: Change from low crawl to high crawl, to low
1st gear, and so on. Changing gear from low crawl
directly to low 1st gear often means that the truck will
stop before you have time to get into 1st gear.
Driving 157
Splitter Control:
H High split
L Low split
Symbol for engaged low splitter
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