Terex TS14G, Maintenance Manual

Page: 131 / 376

SM 1777 3-99
Section 165-0031
3
Brake Parts - Brake Parts - Scraper
INSPECTION
Numbers in parentheses refer to Fig. 1.
WARNING
Do not allow solvents to come in contact with
brake shoe linings. If brake shoe linings are
soaked with solvents, they must be replaced.
1. Thoroughly clean all parts, except linings, in a
suitable solvent. Dry with compressed air or wipe dry
with a lint free cloth.
2. Ensure lube passages in pins (20) are open.
3. Check camshafts (2) for flat spots. Flat spots on
cams can cause serious pulling, especially in the
tractor drive brakes.
4. Check for bent camshafts (2). Bent camshafts will
tend to bind in the bushings, push the shoes open at
an angle, tending to bend the anchor pins (20) or
cause a taper wear pattern of the brake lining.
5. Check camshaft bushings in spindle and anchor pin
bushings (19) in brake shoes for excessive wear and
replace if worn.
6. Check brake drums for cracks, distortion and
scored surfaces. Severely scored brake drums may
be salvaged by reboring. The maximum the drums can
be rebored is 5 mm (3/16 inch). Drums should be
bolted to the hub of wheel when being rebored. With
rebored drums, an oversized lining should be used.
When using oversized linings, each shoe must have
added to the original thickness ONE HALF the amount
removed from the drum.
7. Check brake shoe rollers (11) for binding. If they
bind, clean and oil; if they still bind the rollers and pins
(6) should be checked for excessive wear. If
necessary, break the weld on pins (6) and replace with
new pins and rollers.
8. Clean all rust off face of brake shoes and smooth
down bolt or rivet holes so lining will fit snugly.
9. When installing linings, always replace all linings on
an axle to equalise wear and prevent the brakes from
pulling.
ASSEMBLY AND INSTALLATION
Numbers in parentheses refer to Fig. 1.
Note: Tighten all fasteners without special torques
specified, to standard torques listed in
Section 300-0080, STANDARD BOLT AND NUT
TORQUE SPECIFICATIONS.
WARNINGS
To prevent personal injury and property
damage, be sure wheel blocks, blocking
materials and lifting equipment are properly
secured and of sufficient capacity to do the job
safely.
1. If camshaft bushings in spindle were removed,
install new bushings in spindle bore. Refer to
Section 100-0010, CHASSIS, HOOD AND FENDERS.
2. Install camshaft (2) in spindle. Install slack adjuster
and snap ring (1) on camshaft (2). Connect brake
chamber to slack adjuster by replacing clevis pin and
cotter pin (3).
3. If pins (20) were removed, install pins in spindle.
Secure pins (20) to spindle with nuts and lockwashers
(8). Install lube fittings (7) in pins, if removed.
4. Install rollers (11) and pins (6) in brake shoes (5 &
18). Re-weld both ends of pin to the shoe to prevent it
from working out.
5. Install linings (16) on brake shoes (5 & 18) and
secure with screws, lockwashers and nuts (17).
Torque tighten nuts to 20 - 27 Nm (15 - 20 lbf ft).
Courtesy of Machine.Market