M
AINTENANCE
& I
NSPECTION
C
HAPTER
9
9-26
THP 94/42 R 4 XXT
THP 125/42 R 4 XXT
THP 140 H/42 R 4 XXT
GB-07.2005
9.8.3
Adjusting the S-valve
Perform the following steps to adjust the S-valve:
1.
Remove the locking plate (
1
) from the swing lever.
2.
Tighten the screw (
2
) to approx. 100 Nm, then back off
by 30%.
3.
Refit the locking plate.
4.
Perform a trial run of the concrete pump.
9.8.4
Checking the chain tension on the outrigger feet
When the chain tension is correctly set, the chin should sag no more than 30 mm. If the chain tension reduces, it
must be tightened.
To do this, proceed as follows:
•
Use the adjustment nut (
1
) to tighten the chain until the
correct sag of 30 mm is achieved.
1
30 mm
Fig. 9.18 Checking the chain tension
2
1
Fig. 9.17 Adjusting the S-valve
