MAINTENANCE
36
7/20, P65
TYRES/TYRE PRESSURE
See the
GENERAL INFORMATION
section of this manual.
RUNNING GEAR/WHEELS
Check the wheel nut torque 20 miles (30 kilometres) after refitting
the wheels. Refer to the
TORQUE SETTING TABLE
later in this
section.
Lifting jacks should only be used under the axle.
The bolts securing the running gear to the chassis should be
checked periodically for tightness (refer to the
SERVICE/MAINTENANCE CHART
for frequency) and re
−
tightened
where necessary. Refer to the
TORQUE SETTING TABLE
later in this
section.
BRAKES
Check and adjust the brake linkage at 500 miles (850Km) then
every 3000 miles (5000Km) or 3 months (whichever is the sooner) to
compensate for any stretch of the adjustable cables. Check and adjust
the wheel brakes to compensate for wear.
Adjusting the overrun braking system (KNOTT
Running Gear)
1: Preparation
Jack up the machine
Disengage the handbrake lever [1].
Fully extend the draw bar [2] on the overrun braking system.
1
2
3
4
5
6
1 Handbrake lever
2 Draw bar and bellows
3 Handbrake lever pivot
4. Spring sleeve complete.
5 Brake cable
6 Breakaway Cable
Requirements:
During the adjustment procedure always start with the wheel brakes.
Always rotate the wheel in the direction of forward movement.
Ensure that an M10 safety screw is fitted to the handbrake pivot.
The brake actuators must not be pre
−
tensioned
−
if necessary loosen
the brake linkage [7] on the brake equalisation assembly [8].
Check that brake actuators and cables [11]
operate smoothly.
5
8
9
10
11
7
7 Brake linkage
8 Equalisation assembly
9 Compression spring
10 Equaliser plate
11 Cable
CAUTION
The compression spring [9] must only be lightly pre
−
tensioned and
when operating must never touch the axle tube.
Never adjust the brakes at the brake linkage [7].
2. Brake Shoe Adjustment
12
13
12 Adjusting screw
13 Cable entry
Width across flats of adjusting screw [12]
Brake size
Key width
160x35 / 200x50
SW 17
250x40
SW 19
300x60
SW 22
Tighten adjusting screw [12] clockwise until the wheel locks.
Loosen adjusting screw [12] anti
−
clockwise (approx.
½
turn) until the
wheel can be moved freely.
Slight dragging noises that do not impede the free movement of the
wheel are permissible.
This adjustment procedure must be carried out as described on both
wheel brakes.
When the brake has been adjusted accurately the actuating distance
is approximately 5
−
8mm on the cable [11]
