Specifications

RailCorp Infrastructure Engineering Manual – Signalling

Maintenance Manual

Electric Point Machine Westinghouse Style M70 MKIII TMG E1583

2.3 Installation

The right and left hand layouts of the M70 MKIII point machine are illustrated in

Figures 2.3.1 and 2.3.2. For complete details of layouts refer to "Switch and Detail

Layouts — Power Operation Book" (SRA publication).

2.3.1 Installation of Machine

(a) Preparation Instructions

The following instructions outline the necessary preparation prior to installation of the

point machine.

1. Ballasting, tamping and alignment of track to be completed by the civil

maintainer.

2. Excess ballast is to be removed to allow free movement of switches and

connecting rods. Particular attention should be given to small particles of ballast

under the switches. This will be evident when the switches are moved back and

forth.

3. Check that heel blocks (if fitted), studs at each chair and all rail fastenings are

secure.

4. Check that switches are square at point of switches.

5. Move each switch independently and check that they bear evenly on each chair

A, B, C, D.

6. Each switch should move freely and fit evenly against the stock rail without

undue force.

7. Any defects regarding the above steps should be brought to the attention of the

civil maintainer.

NOTE: When operating points by hand prior to connection of the points machine

the same effort should apply to both normal and reverse position.

(b) Installation Procedure

1. Fit front rod.

2. Fit back rod.

3. Fit additional back rods 3rd and 4th if required depending on switch length.

4. Fit cradle to front rod.

5. Fit extension pieces to N and R switches.

6. Fit lock rod.

7. Adjust point opening to 115mm (4 1/2").

8. Bar points to both normal and reverse and ensure they bear evenly on the stock

rails without having to exert undue pressure.

9. Fit tie plates to rail brace chairs on scarfed timbers (note insulation to be

provided).

Issue Date: 1 December 2009 Uncontrolled when Printed