Portable Compressor 7/20
9---6
SEPTEMBER 2003
9.19.
BRAKES
Check and adjust the brake linkage at 850 km (500 miles) then
every 5,000 km (3,000 miles) 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.
9.20.
ADJUSTING THE BRAKING SYSTEM
(KNOTT RUNNING GEAR)
(1.) Preparation
Jack up the machine.
Disengage the hadbrake lever
1
.
Fully extend the draw bar
2
on the braking system.
1.
Handbrake lever
2.
Draw bar and bellows
3.
Handbrake lever pivot
4.
Spring sleeve complete
5.
Brake cable
6.
Breakaway cable
1
2
3
4
5
6
Figure 9-- 1.
BRAKING SYSTEM
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 bowden cables
11
operate
smoothly.
5
8
9
10
11
7
7. Brake linkage
8. Equalisation assembly
9. Compression spring
10. Equaliser plate
11. Bowden cable
Figure 9-- 2.
EQUALISER
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
Figure 9-- 3.
WHEEL BRAKE
Width across flats of adjusting screw
12
.
Brake size
Key size
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.
