Landoll 600A Series, Operator'S Manual

Page: 58 / 86

c. Spring Suspension Axles
SPRING SUSPENSION TORQUE CHART
Size 1" 7/8" 7/8" U-
bolt
1/2"
Torque in
Ft.Lbs.
480-500 250 300 55-60
1. Loosen the torque arm clamp bolts on the
adjustable torque arms and loosen the axle
U-bolts.
2. Turn the adjustable torque arm on the front
axle until the proper alignment has been
achieved using the procedure outlined in
Section 4-7.2 b.c.
3. Tighten the axle U-bolts to the torques
listed in the above table.
4. Tighten the front axle torque arm clamp
bolts to the torque listed in the above table.
5. Align the rear axle to the front axle in the
same manner using the torque arm for
adjusting. The rear axle should be parallel
with the front axle, with the dimensions Y
and Y1 being the same.
6. Tighten the rear axle U-bolts to the torque
values listed in the above table.
7. Tighten the rear axle torque arm clamp
bolts to the torque listed in the above table.
4-8 BRAKE SYSTEM MAINTENANCE
WARNING
1. WHEN CRAWLING UNDER THE
SEMITRAILER IS NECESSARY,
CHOCK ALL WHEELS OF THE
TRAILER AND TRACTOR. WHEN
JACKING IS NECESSARY, CHOCK ALL
WHEELS AND SUPPORT THE SEMI-
TRAILER UNDERCARRIAGE WITH
JACK STANDS SUFFICIENT TO WITH-
STAND THE WEIGHT OF THE SEMI-
TRAILER AND LOAD. FAILURE TO
TAKE ADEQUATE SAFETY MEAS-
URES MAY RESULT IN SERIOUS PER-
SONAL INJURY OR DEATH.
2. USE GREAT CARE IF WHEELS OR
BRAKE DRUMS MUST BE HANDLED.
THEY MAY BE VERY HOT AND CAN
CAUSE SERIOUS BURNS.
4-8.1 General .
A daily general inspection will reveal the most
common problems found in the spring brake sys-
tem. This inspection should include the following:
a. Check air hoses for chafing, bends, kinks,
or damaged fittings. Replace defective hoses.
b. Check the brake system for loose, missing,
deformed, or corroded fasteners. Replace
and tighten defective hardware.
c. Check brake linings for excessive wear or
distortion.
d. Drain air reservoir daily. A drain cock on the
bottom of each air reservoir vents the tank to
drain collected water and oil. If held open, air
pressure in the tanks is relieved, causing the
emergency or parking brakes to be applied
(See Figure 4-11).
4-18
Figure 4-11 Drain Cock Locations