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Maximum Bolt Torque
(Dry Conditions Only)
Diameter-Thread Pitch
Grade 8 (foot-pounds)
1/4"-20
11 ft-lbs
5/16"-18
24 ft-lbs
3/8"-16
44 ft-lbs
7/16"-14
70 ft-lbs
M12 x1.75
88 ft-lbs
1/2"-13
107 ft-lbs
M14 x 2.0
140 ft-lbs
9/16"-12
154 ft-lbs
5/8"-11
211 ft-lbs
3/4"-10
376 ft-lbs
1"- 08
900 ft-lbs
Note: Use 25% less torque when lubricated.
Check and re-tighten all fasteners after the
first three hours of use. Periodically review
all fasteners after the initial inspection.
9/16"
9/16"
90˚ Adjust. Elbow O.R.B. Adapter
7/16"
7/16"
45˚ Adjust. Elbow O.R.B. Adapter
7/16"
Male O.R.B. Connector Adapter
04 Assem. Instructions - Moldboard & A-frame
Moldboard & A-Frame Assembly
1. Begin the moldboard assembly by positioning the PIVOT BEAM and
A-FRAME near the connecting points at the rear of the blade between
the two center support ribs. Position the pivot beam between the two
support ribs until the connecting points on the beam align with those on
the plow. Insert one 3/4"-10 x 3-1/2" hex head screw through each mounting
hole and secure with a 3/4"-10 top lock nut. Tighten each nut until it is
snug with the pivot beam.
Note: To aid in the remaining installation, rotate the spring loaded kick-
stand clockwise until it locks into place. Adjust the foot on the kickstand
arm so the height of the A-frame, at its mount points, is 12-1/2" to level
ground (See diagram on page 7). Tighten both of the 1/2"-13 top lock nuts
on the kickstand.
2.
Position each ANGLE CYLINDER with the rod end of the cylinder in the
pivot beam and the hydraulic hose port facing away from the A-frame.
Secure the cylinder to the pivot beam with one 3/4"-10 x 5" (3/4"-10 x
4-1/2" for 760LD only) hex cap screw and one 3/4"-10 top lock nut. Extend
each cylinder rod until the cylinder base mounting hole aligns with the
hole on the A-frame angle cylinder bracket. At this point, insert one
3/4"-10 x 5" (3/4"-10 x 4-1/2") hex cap screw through the aligned holes
and secure the screw with one 3/4" top lock nut. Repeat the same instal-
lation for the opposite angle cylinder.
3. Remove each dust cap from both of the hydraulic angle cylinder ports
and attach one 9/16"-18 x 9/16"-18 90˚ ADJUSTABLE ELBOW O.R.B.
ADAPTER to each port. Note: All of the hydraulic adapters can be found
packaged with the manifold assembly. Hand tighten each adapter until
snug, then torque approximately 1-1/2 to 2-1/2 flats. Reference the table
on page 5 for proper torque specifications. Angle each adapter toward
the top of the moldboard and tighten approximately 1-1/2 flats. Connect
the 3/8" x 24" hydraulic hose, labeled #1, to the driver's side angle cylinder
adapter. Attach the 3/8" x 24" hydraulic hose, identified by a #2, to the
passenger's side angle cylinder adapter. Be careful not to overtighten the
hose connections. Route both hoses over the top of each angle cylinder.
4. Next, remove both of the plastic dust caps from the HYDRAULIC LIFT
CYLINDER ports. Attach one 7/16"-20 x 7/16"-20 45˚ ADJUSTABLE
ELBOW O.R.B. ADAPTER to the driver's side port and one 7/16"-20 x
7/16"-20 MALE O.R.B. CONNECTOR ADAPTER to the passenger's side
port. Once the adapters have been installed on the cylinder, connect the
HYDRAULIC HOSES. The 45˚ adapter on the driver's side of the cylinder
receives a 1/4" x 17" hose identified by a label containing the number 3.
Connect the 45˚ angle on the hose to the hydraulic adapter on the cylinder.
The male connector adapter on the passenger's side of the cylinder
receives a 1/4" x 15" hose identified by a label containing the number 4.
7/16"
Tighten the 45˚ end of the hose to the hydraulic adapter on the cylinder.
Both hoses should be routed through the triangular openings in the A-frame.
5. Next, use a screwdriver to pull the hydraulic cylinder rod out from its
base. Place one 1-1/4" (1", 2" O.D. for 760LD only) diameter washer over
the cylinder rod, followed by the 12" COMPRESSION SPRING and another
1-1/4" (1", 2-1/4" O.D. for 760LD only) washer. Compress the coils approx-
CAUTION: Do not over tighten hex head nuts! Binding may
prohibit the pivot beam from moving properly on the plow.
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