Advertisement
imately 2" and clamp the spring and washers in place using a pair of vise
grips. This will help facilitate the draw latch installation.
Hydraulic
Lift / Lower
Cylinder
Inner Draw
Latch Plate
Outer Draw
Latch Plate
1/4"-20 x 1/2"
Set Screw
1/2"-13 x 2" Bolt
6" Extension
Spring
3/4"-10 x 4-1/2" Bolt
or 3/4"-10 x 4"
for LD only
3/8"-16 x 3/4" Bolt
6.
Begin the draw latch installation by first removing both of the 6" extension
springs on the latch. Proceed to remove both 1/2"-13 x 2" bolts with
washers and spacers from the DRAW LATCH BOLT MOUNT PIN. Once
the springs and hardware have been removed, loosen the SET SCREW
on the OUTER DRAW LATCH PLATE using a 1/8" Allen wrench and
remove the draw latch bolt mount pin from the assembly.
Next, remove the 1" x 4-1/2" (1" x 3-7/8" for 760LD only) DRAW LATCH
MOUNT PIN from the assembly. By removing this pin, the INNER DRAW
LATCH PLATES can swing free. Proceed to remove the 3/4" x 2-1/2"
(5/8" x 2-3/8" for 760LD only) INNER DRAW LATCH PLATE CYLINDER
MOUNT PIN. Position the plates on either side of the lift/lower cylinder rod
and insert the 3/4" x 2-1/2" (5/8" x 2-3/8") pin through the plates and
cylinder rod. Note: The A-FRAME LATCH, located at the rear center of the
A-frame, should be in the down position. Pull the A-FRAME LATCH PULL
PIN out and rotate the latch clockwise if it is in the raised position. Now
that the cylinder is connected to the inner draw latch plates, rotate the draw
latch assembly toward the draw latch mount holes on the A-frame. Align
the holes in the outer draw latch plate with those of the inner draw latch
plates and the A-frame. Secure the assembly to the A-frame by replacing
the draw latch mount pin. Remove the vise grips from the cylinder rod.
This will allow the compression spring to expand against the draw latch.
Rotate the A-frame latch counterclockwise until the A-frame latch pull pin
locks into place. Next, replace the draw latch bolt mount pin. The pin
should be evenly spaced on either side of the outer draw latch plates.
Tighten the set screw to secure the pin in place. Complete the draw latch
assembly by replacing the washers, spacers, extension springs and bolts
on both sides of the draw latch bolt mount pin.
Draw Latch
Mount Pin
(1"x 4-1/2") or
(1"x 3-7/8") for
760LD only
Inner Draw
Latch Plate
Cylinder
Mount Pin
(3/4"x 2-1/2")
(5/8"x 2-3/8") for
760LD only
Draw Latch Bolt
Mount Pin (1"x 6") or
(1"x 5-5/8") for 760LD only
A-Frame
Latch
A-Frame
Latch Pull Pin
Draw Latch Assembly
The draw latch consists of a series of intercon-
nected plates and pins that attach to the A-frame
and the hydraulic cylinder that raises and lowers
the plow. The draw latch is also the most difficult
component to install on the entire plow and may
require the help of a second technician.
One
Flat
Torque Table for 37˚Adapters
Assembly
Port
Thread
Torque
Size
(foot-pounds)
7/16 -20
15 ± 1.0
9/16 -18
18 ± 2.0
Torque Table for O.R.B. Adapters
Port
Assembly
Thread
Torque
Size
(foot-pounds)
7/16 -20
15 ± 1.0
9/16 -18
25 ± 2.0
F.F.F.T. = Flats From Finger Tight
Ex.) After threading a 7/16-20 O.R.B. adapter
finger tight, torque the fitting approximately
1-1/2 flats (faces) for proper installation.
A-Frame
Latch
A-Frame
Latch
Lock Pin
To mount the straight blade, the A-frame latch
should be lowered over the spring mount – this
allows the draw latch to pull the plow into the
undercarriage. Once the plow is safely attached
to the undercarriage, rotate the A-frame latch
counterclockwise until the lock pin snaps in place.
The A-frame latch is only used to mount the plow.
Assem. Instructions - Moldboard & A-frame 05
Two
Flats
Original
Assembly
(F.F.F.T.)
2.5 ±.25
2.5 ±.25
Original
Assembly
(F.F.F.T.)
1.5 ±.25
1.5 ±.25
Spring
Mount
Advertisement
