Blitz DUPLEX S2 - Check Hydraulic Components for Leakages; Tighten Mounting Screws of Cross Members and Shafts

8. Maintenance
21
117127 ● 07/2011
8.7 Check hydraulic components for
leakages
Check lift only in unloaded condition.
1. Carry out visual check of rod seals and scraper
rings ( chapter 9.1) at stages 1 and 2 during
lifting and lowering.
2. Switch off lift with main switch and secure with
padlock.
3. Open maintenance door.
4. Open protective cover.
5. Check all hydraulic components for leakage.
6. Replace and tighten protective cover.
7. Close maintenance door.
8. Remove padlock, switch on lift.
8.8 Tighten mounting screws of cross
members and shafts
1. Check tightening torque with torque spanner
and re-tighten, if necessary:
● Bolts on cross member: M20 with 560Nm
● Bolts on shafts: M16 with 195Nm
Tightening torque for bolts
For set screws, friction factor = 0,125
Dimensions
Tightening torque (Nm)
Strength category
8.8
10.9
12.9
M 4
2.8
4.1
4.8
M 5
5.5
8.1
9.5
M 6
9.6
14
16
M 8
23
34
40
M 10
46
67
79
M 12
79
115
135
M 14
125
185
220
M 16
195
290
340
M 18
280
400
470
M 20
395
560
660
M 22
540
760
890
M 24
680
970
1150
M 26
1000
1450
1700
M 30
1350
1950
2300
20
i
Ma= 560Nm
Ma= 395Nm
Ma= 195Nm
Lubrication
Check bolts