Table of Contents
Advertisement
2 Introduction
AXLE BEAMS
The Meritor HVS TM Series Axle is manufactured to a very high
standard of beam engineering. The beam material is heat treated to
provide an excellent yield strength whilst maintaining a good
ductility.
The carbon equivalent of the beam material is controlled to ensure
that pre-heating is not necessary when welding per the provisions
of BS 5135.
It is advisable to have Meritor HVS Engineering Department review
the application of any welded bracketry if not previously approved.
The Beam Spindles are forged and heat treated to high strength.
Quality is built-in; the whole process is self monitoring with 100%
checks of critical dimensions.
All Meritor HVS beams are manufactured to ensure the beam is
straight and in line. Some slight distortion will occur when
suspension components are welded to the beam but in general this
is negligible. If cambered beams are required – these must be
ordered specially.
AIR CHAMBER BRACKETS AND CAM BRACKETS
All Mark III beams come equipped with air chamber brackets and
cam brackets welded in the correct position to ensure brake
actuators operate in the optimum way. Replacement beams are
normally supplied without air chamber brackets or spring seats.
SPRING SEATS AND AIR SUSPENSION AXLE
ADAPTERS
Meritor HVS can supply axles with the above components welded to
individual customer requirements.
ANTI-LOCK OPTIONS
Axles can be ordered with anti-lock sensor equipment already
installed and tested.
Meritor HVS TM Series Axle
9
BRAKING
DRUM BRAKES
The Meritor HVS range of S-cam drum brakes are available in a
number of sizes depending on the application. For further
information refer to the appropriate Meritor HVS Service Manual;
S-cam
MM 1000.
SAC
MM 0267
As a general guide, Meritor HVS recommends:-
TANDEM AXLE TRAILER (Normal Use) 420x180 brakes (Q)
TRI-AXLE TRAILER (Normal Use) 420x180 brakes (Q)
TANDEM AXLE TRAILER (Heavy Duty Use) 420x220 brakes (Z)
Meritor HVS TM axles have been fitted with non-asbestos brake
linings since January 1992 and meet UK/EEC braking regulations..
Brake Shoes
Meritor HVS quick-change design shoe is accurately produced by
manufacturing processes ensuring all shoes are capable of being
relined several times. When relined with the Meritor HVS original
part the necessity to machine the linings on the axle is eliminated.
The anchor pin and roller areas are induction hardened to prevent
wear.
Each shoe is coated with a rust inhibiting finish.
Every Meritor HVS shoe is marked with an Meritor HVS logo – look
for this guarantee to avoid being the recipient of non-genuine lower
quality shoes.
Anchor Pins & Bushes
The TM axle has new sealed anchor pins with indented greased
bronze bushes. This unique feature keeps the pin working, providing
consistent brake performance. The 'O' ring seals keep contaminants
away from the bush area.
DISC BRAKES
The TM series axle is available with either DX 195/225 or ELSA 2
air disc brakes. For further information refer to the appropriate
Meritor HVS Service Manual ;
DX 195/225
MM 1147
ELSA 2
MM 1130
Advertisement
Table of Contents
