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Section 5: Maintenance & Lubrication
TB2596 & TB25108 Trip Blade 301-291M
11/26/14
Trip Hinge Maintenance
Refer to Figure 5-3:
!
CAUTION
Never work under the Trip Edge Blade without properly
blocking it up first. The unit can fall resulting in serious injury
or death.
!
CAUTION
Always lock pivot assembly when working on or around the
Trip Blade. An unlocked blade can suddenly rotate clockwise
or counterclockwise causing personal injury.
At the start of each season, check blade hinge
movement to ensure the pivot rods have not seized.
1.
Park tractor/skid steer with Trip Edge Blade on a flat
level solid surface. Lock blade oriented straight
across with pivot control pin (#4) and hairpin
cotter (#9).
2.
Lower hitch frame onto solid support blocks with
blade supported off the ground.
3.
Place transmission in park and set park brake.
4.
Shut tractor/skid steer off, remove switch key, and
relieve all hydraulic pressure before dismounting.
NOTE: The Trip Blade could be damaged if it will
not trip or has tripped and will not reset. See
“Jammed Trip Blade” on this page if it will not reset
itself.
5.
Remove lock nuts (#7) and bolts (#6) until all four
spring assemblies (#10) are detached at the bottom
from blade (#1). Be careful not to lose lower spring
mount spacers (#3).
6.
Move hinged blade (#1) fully forward and backward
by hand.
a. If blade does not move, spray penetration oil into
the hinge joints and work blade back and forth
until it moves freely.
b. If blade still does not move, remove lock nuts (#8)
and screws (#5) from both sides of the blade. Pull
pivot rods (#2) partway out to free up hinge
movement. Work blade back and forth until it
moves freely. Apply white lithium based spray
lubricant to the pivot rods (#2) and then reinsert
them into the hinge barrels. Secure rods in place
with 3/8"-16 x 1" GR5 hex flange screws (#5) and
hex flange lock nuts (#8). Tighten nuts to the
correct torque.
7.
Reassemble spring assemblies (#10) to the hinged
blade (#1) with 1/2"-13 x 6 1/8" GR5 hex flange
screws (#6), lower spring mount spacers (#3) and
hex flange lock nuts (#7). Draw nuts up to rib. Do not
over tighten or spring assembly may not rotate
properly.
8.
Apply white lithium based spray lubricant to the
hinge joints to help keep moisture out.
9.
Raise blade up and remove support blocks.
Trip Hinge Movement
(Skid shoes and hitch not shown for clarity)
Figure 5-3
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