Specifications

RailCorp Infrastructure Engineering Manual – Signalling
Maintenance Manual
Electric Point Machine Westinghouse Style M70 MKIII TMG E1583
7.5 Fault Finding Chart 5 - Point Machine Operates Only in Normal or Reverse
Position
Fault
Most Likely
Emergency
Subsequent
Causes
Action
Action
Point machine operates
in normal or reverse
position only
Open circuit contacts in
points contactor
Replace contactor
Recondition contactor in
workshops
Faulty toggle
mechanism or
associated motor
control switch
Check toggle action and
replace components or
switch as required
Points obstructed
Remove obstruction
Obstruction in point
mechanism
Remove obstruction.
Check for damage. If
damaged replace part
or point machine
Overhaul mechanism in
point machine
Version 1.0 © RailCorp 2009 Page 53 of 52
Issue Date: 1 December 2009 Uncontrolled when Printed