2.26.9 Pinninq the Tow Point. The tow point of the
hydraulically controlled to being mechanically controlled
by pinning the tow point to the tractor. Mat thickness up
to 6 in. (152 mm) is achieved by hydraulically adjusting
the tow point cylinder. Pinning the tow point allows
mechanical mat thickness of 6 to 8 in. (152 to 203 mm)
by using the thickness control.
Shut down paving machine and remove key from
ignition switch per paragraph 2.11.
Access toolbox per paragraph 3.3.1 and retrieve
two screed tow arm locking pins with attached
hex head cap screw and wrench set from
Procedures for pinning the tow point
are the same for both left and right
screed tow arms. Pin one side of the
machine at a time. The left side of
the machine is illustrated in this
Use a wrench to remove hex head cap screw (1)
and tow arm clevis pin (2) from bottom cylinder
Pull forward on tow point cylinder (3) to slide
cylinder clevis head from screed tow arm (4).
Pull top retaining clips (5) from top cylinder clevis
Remove clevis pin (6).
Pull down on tow point cylinder to disengage it
from mounting bracket (7).
Pull tow point cylinder (3) backward and secure
cylinder to the side access cover (8) by clipping
retaining clips (5) through top and bottom clevis
heads and attaching to grill of side access cover.
Use screed thickness control (9) to align bottom
locking pin hole (10) in tow arm support plate
(11) with slotted hole in screed tow arm (4).
Install locking pin (12) into bottom hole in tow
arm support plate (11) and slotted hole in screed
tow arm (4).
Use a wrench to install hex head cap screw (13)
into tow arm support plate and screed tow arm
Repeat pinning procedure for opposite tow point
Put wrench set back into toolbox and secure
toolbox per paragraph 3.3.1.