Abbey Machinery Slurry Tanker, Maintenance, Operating Instructions And Spare Parts List, Page: 29 / 72

29
5.0_OPERATING INSTRUCTIONS (CONT.)
5.6 STEERING AXLE TANDEM TANKS
The following points should be understood when operating a Steering Axle Tandem Tanker. This axle is designed to
operate and allow the tanker have a shorter turning circle compared to a rigid tandem. The rear steering axle
follows the front tandem axle automatically and does not require the operator to mind the steering on the tank.
Please note towing a tandem axle tanker is different to towing a standard single axle tanker. The steering axle
must be locked for reversing. It can be locked for increased straight-line stability on the road - The tanker must
always be moving forward at slow speed prior to the steering axle being hydraulically locked. When used on the
road the tandem will perform well at typical agricultural speeds. Please note the Tanker is designed for use as
described in the Abbey Tanker Instruction Manual.
BRAKE ADJUSTMENT
We have been upgrading the brakes on all Abbey machines, to achieve the required braking efficiency of 25% in-
line with braking requirements.
The upgraded braking system has been designed to be used with standard female hydraulic brake coupling to
achieve the above braking efficiency and is now supplied on all Abbey machines. It is essential the above coupling
is used in conjunction with the upgraded brakes, because braking is achieved gradually (with the assistance of the
tractor brake pedal).
It is important to note that it is not recommended to use a standard male hydraulic coupling (in the place of the
standard female brake coupling) to achieve the upgraded hydraulic brakes. If however you choose to replace the
brake coupling with a standard male end (which is against our recommendations). then the tank cam lever bar
should be adjusted as follows.
The bar connecting the Hydraulic Ram to the cam levers should be moved in one hole as shown in Fig. 1. This
adjustment is necessary because of the higher output pressure produced by the standard tractor spool valves and
the immediate/excessive force that would be transferred by the brake ram on to the brake drums.
Cam Levers on standard axles are adjusted by removing cam lever on cam shaft and re-positioning on the next
spline. On larger axles (Recess) cam levers can be adjusted by rotating the adjustment bolt on the cam lever itself.
Fig.1 Moving the Cam Bar in one hole
Please Note: Braking regulations can vary from country to country. Please check legal brake usage in your country.
Brake Spring:
ABY4942
Cam Lever
Brake Ram
Cam Lever Bar
Adjust Inward
One Hole