17
Pul-Blast
AR pump system
Read this manual completely before operating: follow all safety instructions.
77 series hitch pin removal
77 series hitch pin installation
1.
Apply lube to threads.
2.
Using the supplied crowfoot wrench* (bolted to the
hitch trunion) loosen nut
A
and thread to inside
plate
B
.
3.
Rotate nut to apply heavy force against the support
plate
B
. To aid in separation, strike point
C
with a
heavy steel hammer.
Use heat as needed.
1.
Parts should be clean prior to installation. Apply a light
film of oil to taper and threads
2.
With the pin partially inserted, install the lock washer
and thread the nut
A
onto the pin.
The retainer pin hole
D
should be vertical as you finger
tighten the nut.
3.
Tap the end of the hitch pin to seat the pin and prevent
pin rotation when tightening the nut
A
.
4.
Using the supplied crowfoot wrench, tighten the hitch
pin nut using a ratchet or breaker bar.
5.
Using a torque wrench as shown, torque nut to
110 ft-lbs.
Important:
the torque wrench and crowfoot wrench
must be in-line as shown.
C
A
D
B
Pin wrench is installed on the torque wrench
in-line
* If your hitch does not have the 3/8” thick crowfoot wrench,
please contact the factory to order an upgrade or replace-
ment
part number CVH71TOOL.
The hitch pin is a tapered fit in bushing.
