10.1.2 Test Connections And Test Values - Stihl 034 Series User Manual

10.1.2 Test Connections and Test Values

– The pin and socket connections
of wires 1 to 4 must be
disconnected to test the
individual components.
(see 10.1, fig.138 RA 132 VA)
Component
Switch
Heating element, rear
handle (previous)
Heating element, rear
handle (new version)
Heating element, front
handle (previous)
Heating element in
front handle (new
version)
Generator
50
Ohmmeter connection
(use either test lead)
Leadl 1 Lead 2
Switch Ground
terminal
Connector Connector
on wire 3 on wire 4
Connector Connector
on wire 3 on wire 4
Connector Ground
on wire 2
Stecker an Ground
Leitung 2
Connector Ground
on wire 1
Resistance If faulty
Spec. Actual Cause
0 - Switch faulty
0.25 approx. Heating element OK
0.25
- Break in wire, heating
element damaged
0 Short circuit -
damaged insulation
1 approx. Heating element OK
1
- Break in wire,
Heating element
damaged
0 Short circuit -
damaged insulation
1.6 approx. Heating element OK
1.6
- Break in wire, heating
element damaged
0 Short circuit durch
damaged insulation
7 approx. Heating element OK
7
- Break in wire,
Heating element
damaged
0 Short circuit -
damaged insulation
0.6 approx. Generator OK
0.6
- Break in wire,
generator damaged
0 Short circuit -
damaged insulation
Remedy
Replace switch
Replace heating
element
Repair
insulation
Replace heating
element
Repair
insulation
Replace front
handle
Repair
insulation
Replace front
handle
Repair
insulation
Replace
generator
Repair
insulation
034, 036, 036 QS