MEGA Corp. MHT175-CAT777-OPS-1 - Manual (Page 10)

MHT175-CAT777(G)-1
1 Aug 2012
SECTION 2
System Description
2-2
Trailing Axle Frame Assembly
The trailing bogie is constructed of square
steel tubes and plates. The assembly provides
mounting for the rear axle assembly associated
brake system accumulators filters, manifolds,
and light. The rear of the bogie also contains a
push type bumper assembly.
The bumper may be configured as a push-
block or wrap-around style. The design
provides a pushing point to assist the MHT up
a grade in low traction conditions (wet, muddy
or icy haul road). The bumper assembly is
designed to be pushed straight on by the
pushing (boosting) machine. Proper straight on contact between MHT and
pushing (boosting) machine is shown below:
Routine hard bumper contacts by the pushing
(boosting) machine will cause structural
fatigue and result in reduced trailer service
life.
Angled blade contact of the push-block style
bumper will reduce bull dozer blade to MHT
wheel clearance. Extreme blade angles will
cause blade/bit to wheel contact and damage
MHT tires. MHT and pushing (boosting)
machine operators must communicate to
maintain correct contact and maximum wheel
to blade/bit clearance.
Wrap-Around Style
Push-Block Style