Operation and maintenance manual

Section 250-0070
SM 2165 Rev 1 11-03
11
Braking System - Treadle Valve
17. Install boot (5) over lip of valve body and over head
of adjusting bolt (4). Apply a light coating of Loctite
Activator 710 between head of adjusting bolt (4) and
boot (5). Apply Loctite 410 adhesive to boot (5)and
head of adjusting bolt (4).
18. Insert pivot pin (2) through the hole in actuator
base (3), through the holes in 'U' bolts, and through the
pivot pin hole in the other side of actuator base (3). As
pivot pin (2) is being inserted, install pedal return
springs.
19. Centre pivot pin (2) and secure with nuts and
washers on 'U' bolts. Tighten nuts to a torque of
16 - 17 Nm (140 - 150 lbf in).
20. Install pedal assembly (1) on actuator cam and
secure with capscrews, washers and nuts.
Brake Signal Pressure Switch
Attach a continuity tester to black and brown wires on
signal pressure switch located at a tee in the 'B2' line.
The circuit should be open.
Note: As brake pressure increases to 2.7 bar (39 lbf/
in²) the circuit should close.
MAINTENANCE
General
Check all hydraulic brake lines and fittings at treadle
valve for leaks and damage. Tighten/replace as
required.
Every 1 000 Hours
Check front and rear brake pressures at remote
diagnostic test points. If the pressures are outwith the
specified pressure range, inspect the valve and take
relevant action (adjust pressures, strip down and
repair valve or replace valve).
SPECIAL TOOLS
There are no special tools required for the procedures
outlined in this section. Refer to Section 300-0070,
SERVICE TOOLS, for part numbers of general service
tools and adhesives required. These tools and
adhesives are available from your dealer.
* * * *
SPECIAL TORQUE SPECIFICATIONS
TORQUE
FIG. NO. ITEM NO. ITEM NAME Nm lbf in
1 10 Capscrew 16 - 17 140 - 150
1 12 Plug 17 - 20 150 - 180
1 28 Capscrew 16 - 17 140 - 150
1 30 Plug 21 - 24 190 - 210
1 35 Plug 10 - 11 90 - 100