Operating Instructions
17
TRIP-OVER EXTENSION SPRING
The dozer blade is designed to “trip” forward when
striking large rocks, tree stumps, etc. Once the
blade clears the obstacle, the blade will spring
back to the normal operating position preventing
damage to the machine and plowing surface.
Adjust the extension spring tension by tightening
the ESNA nut until a minimum of two (2) threads
protrudes through the ESNA nut.
Extension Spring Adjustment
Two (2)
Threads
Eye Bolt Threads
TRIP-OVER LOCK
The trip-over lock is designed to halt the forward
trip-over motion caused by the extension spring. It
locks the blade into a rigid position. Only use the
trip-over lock when the operator can be absolutely
certain there are no rigid obstructions on the sur-
face (e.g. broken sidewalks, tree roots, stakes,
etc.) and the forward trip action of the blade is NOT
required.
Engage the trip-over lock by compressing the
spring and rotating the trip-over lock over the stop
rod, as shown in the
Engaging Trip-Over Lock
photo. Be sure the trip lock seats flush on the stop
rod as shown in the
Trip-Over Lock Seated on
Stop Rod
photo. This procedure locks the blade in
place and will prevent the forward trip action.
WARNING
Using the trip-over lock is NOT recom-
mended when obstructions cannot be seen
(e.g. under snow cover). The rigid blade op-
eration should only be used with low
ground speed.
Engaging Trip-Over Lock
Trip-Over Lock Seated on Stop Rod
