Service; General Warning Information On Installation Work; Tightening Torques; Imperial To Metric Conversion Chart - Invacare Pronto M41 Series Service Manual

Invacare® Pronto™ M41 Series

6 Service

6.1 General warning information on installation work

CAUTION!
Risk of injury and damage to property, if the maximum speed reduction on a mobility device with a lifter does
not function correctly
The mobility device's control unit must reduce the maximum possible speed as soon as the lifter is raised.
– Test the maximum speed reduction for correct function after any maintenance work or modifications
to the mobility device.

6.2 Tightening torques

CAUTION!
Damage can be caused to the mobility device due to improperly tightened screws, nuts or plastic connections.
– Always tighten screws, nuts etc to the stated tightening torque.
– Only tighten screws or nuts which are not listed here fingertight.
The tightening torques stated in the following list are based on the thread diameter for the nuts and bolts for which no
specific values have been determined. All values assume dry and de-greased threads.
UNC Thread

6.3 Imperial to metric conversion chart

You can use this chart as an orientation to find the right tool size.
IMPERIAL
inch
5/64
3/32
7/64
1/8
18
Thread
M4
M5
M6
M8
M10
M12
M14
M16
1/4"-20
5/16"-20
3/8"-16
7/16"-14
1/2"-13
9/16"-12
5/8"-11
3/4"-1
7/6"-9
1"-8
Tightening torque in Nm ±10%
Tightening torque in Nm ±10%
METRIC
mm
1.9844
2.3813
2.7781
3.1750
3 Nm
6 Nm
10 Nm
25 Nm
49 Nm
80 Nm
120 Nm
180 Nm
11–7 Nm
22–14 Nm
41–25 Nm
67–40 Nm
100–60 Nm
150–90 Nm
210–130 Nm
370–230 Nm
600–370 Nm
900–550 Nm
1568396-C