GMC PD-4103 User manual

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MAINTENANCE
.MANUAL·
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GMC TRUCK, & COACH D~VISJON
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GM COACH MAINTENANCE MANUAL
USE OF MANUAL
MANUAL GROUPS
This manual is divided into major groups as indicated on the tab index at
right. Location of these groups can be readily found by the numerical black
tab on the first page of each group which corresponds to numerical tab on this
page. Some of the major groups are divided into sections, each section cover-
ing a specific unit or system, as shown in Section Index on opposite page.
PAGE AND ILLUSTRATION NUMBERS
The manual pages are numbered consecutively throughout the manual. Illus-
trations are numbered consecutively within each major group.
INDEXES
The Section Index on page 2 shows first page number of major groups, or first
page number of each section when the major group is so divided. The alpha-
betical index starting on page 5 lists important items together with Manual
page number references.
SPECIAL SECTIONS
A Trouble Shooting section, starting on page 205, is provided to facilitate
analysis and correction of improper operation of the various units and systems.
Information in this section is divided into systems or units corresponding to
manual sections.
Special Tool section, starting on page 209, lists all of the special tools referred
to throughout the manual, together with names and addresses of Vendors from
whom the tools may be obtained.
All Wiring Diagrams are folded and secured on inside of back cover.
Every effort has been made to make the contents of this manual acces-
sible, readable, and accurate. Your suggestions for further improvement
of this manual are invited.
Page 3
"
j~
Front Axle
Rear Axle
Body
Brakes
Clutch
,--~-
Cooling
Electrical
Engine
Fuel
Lubrication
Springs
Steering
Transmission
Propeller Shaft
Wheels, Hubs
and
Tires
Trouble Shooting
Special Tools

GM COACH MAINTENANCE MANUAL
GENERAL DATA
The data below includes only general information on models covered
by this manual. Specific data and specifications will be found in
"Specifications" section at end of each manual group. For conven-
ience, index of general data items is shown below:
DATA
PAGE
DATA PAGE
Cooling System Capacities . . . . . . . . . . . . . . . . . . . . . 98
Max. Engine Speed ..................... See Below
Diesel Engine Information ..................... 148
Fuel Tank Capacities . . . . . . . . . . . . . . . . . . . . . . . . . 153
Lubricant Capacities . . . . . . . . . . . . . . . . . . . . . . . . . . 157
Rear Axle Ratios . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Transmission Ratios . . . . . . . . . . . . . . . . . .. . . . . . . . . 194
MODEL DATA
PD-4103.
Wheelbase ................................... 247"
Tire Size ........... 11:00-20 Single front-Dual rear
Diesel Engine
Model ................................... 6- 71LA39
Piston Disp.-Cu. In ........................... 425.6
Bore and Stroke ..................... .4¼ in. x 5 in.
S.A.E.
Horsepower ........................... .43.35
Governed Engine Speed (no load) ......... 2100 rpm
SERIAL NUMBER LOCATIONS
Delay and confusion can be avoided when correct serial numbers
of vehicle are specified on parts orders and correspondence.
DRIVER'S HEATER PANEL
Page 4
TP-7133
1

GM COACH MAINTENANCE MANUAL
Page 5
INDEX
A
Page
Accessories, Engine • • • • • • • • • • • • • • • • • 142
Adjustments
Bearings, Wheel •••••••••••••••••••
Brake Application Valve ••.••••••••••
Brake Shoe .................... .
Brake Treadle
Clutch ......................... .
Compressor Unloader Valve •••••••••••
Drag Link, Steering • • • • • • • • • • • • •••
Fog Lights . . . . . . . . . . . . . . . . . .....
Generator Neutral Point •••••.•••••••
Governor, Air Compressor •••••••••••
Hand Brake .................... .
Headlights ...................... .
Pressure Regulating Valve •••••••••••
Regulator, Generator •••••••••••••••
Relays ........................ .
Safety Valve •••••••••••••••••••••
Steering Gear • • • • • • • • • • • • • • • • ••••
Stop Screw, Steering Knuckle •••••••••
Tie Rod ........................ .
Windshield Wiper Valve •••••••••••••
Air Brakes •••••••••••••••••••••••
Air Cleaners, Engine ••••••••••••••••
Air Compressor and Governor •••••••••
Air Horns ....................... .
Air Intake System, Engine • • • • • • • • • • • • •
Alarm System, Tell-tale •••••••••••••
Alignment, Front End • • • • ••••••••••••
Antifreeze Chart .................. .
Application Valve, Brake •••••••••••••
Axle, Front ...................... .
Axle, Rear ...................... .
B
199
51
44
44
179
71
177
134
125
71
75
133
48
128
109
45
171
10
10
38
43
151
63
38
150
107
7
98
48
7
17
Battery • • • • • • • • • • • • • • • • • • • • • • • • • • 115
Battery Junctions •••••••••••••••••• , 106
Bearings, Wheel • • • • • • • • • • • . • • • • • • • 199
Body • • • . • • • • • • • • • • • • • • • • • • • • • • . • 29
Body Junction Panel • • • • • • • • • • • • • • • • • 104
Brake Chambers • • • • • • • • • • • . • • • • • • • 55
Brake Drums • • • • • • • • • • • • • • • • • • • • • 61
Brake, Hand • • • • • • • • • • • • • • • • • • • • • • 75
Brakes, Air . . . . . . . . . . . . . . . . . . . . . . . 43
Buzzer, Tell-tale Alarm • • • • • • • • • • • • • • 107
C
Capacity, Cooling System •••••.•••••••
Check Valve, Aux. Air System •.•••••••
Check Valve, Compressor Discharge ••••••
Chime, Passenger Signal •••••••••••••
Circuit Breaker Panel •••••••••••••••
Clutch
Compressor, Air . . ..... Cl • • •••••••••
<;ontrol Panel, Driver's ••••••••••••••
Cooling System . . . . . .............. .
98
48
46
39
102
179'""'
63
101
89
D
Page
Diesel Engine • • • • • • • • • • • • • • • • • • • • • 141
Doors and Controls • • • • • • • • • • • • • • • • • 35
Drag Link, Steering • • • • • • • • • • • • • • • • • 177
E
Electrical System •••••••••••••••••••
Electric Horn
Emergency Door .................. .
Engine Comp't. Panel •••••••••••••••
Engine Mounting •••••••••••••••••••
Engine Tune-up ••••••••••••••••••.•
Entrance Door ....... If • • • • • ••••••••
F
Fan and Water Pump ••••••••••••••••
Filter, Fuel Oil .••••••••••••••••••
Filter, Lubricating Oil • • • • • • • • • • • • •••
Front Axle •••••••••••••••••••••••
Fuel Oil Specifications •••••••••••••••
Fuel System ••••••••••••••••••••••
Gauge, Air Pressure
Gauge, Oil Pressure
G
Gauge Panel ..................... .
Generator ....................... .
Generator Regulator •••••••••••••••••
Glass Replacement ••••••••••••••••••
Governor, Air Compressor ••••••••••••
H
Hand Brake
Heating ......................... .
Horn, Electric •••••••••••••••••••••
Horns, Air •••••••••••••••••••••••
Hubs and Bearings • • • • • • • • • • • • • • • • •
99
113
35
105
145
141
35
97
149
143
7
154
149
46
142
100
121
126
36
71
75
39
113
38
199
Injector Shut-off, .Air Operated • • • • • • • • • 144
L
Lighting System ••••.•••••••••••••••
Lights, Tell-tale .••••••••••••••••••
Links, Shock Absorber •••••••••••••••
Low Air Pressure Switch •••••••••••••
Lubrication
Lubrication Chart
M
Mato-Gard ........ " .............. .
132
107
168
46
155
156
108
I

Page 6 GM COACH MAINTENANCE MANUAL
p
Painting
Pressure Regulating Valve, Air
Propeller Shaft
Q
Quick Release Valve
R
Radiator and Surge Tank
Radiator Shutter ••••••
Rear Axle .......... .
Rectifier, Alarm System
Regulator, Generator
Relays
Relay Valve
Safety Valve
Sash and Glass
Shock Absorbers
Shutter, Radiator
Slack Adjusters
Solenoid
Emergency Stop
Engine Stop
s
Reverse, Transmission
Solenoids •••
Special Tools
Speedometer
Spring Suspension
Starter ••••••
Starting System •••
......
.......
.
.......
Page
29
47
195
52
95
95
17
108
126
109
53
45
36
166
95
56
144
144
182
112
209
113
163
117
116
S (CONT'D.>
Steering Gear •••••••••
Strainer, Lubricating Oil
Surge Tank •••••••••••
Sway Bar ••••••••••••
Switch, Low Air Pressure
Switch, Low Oil Pressure
Switch Panel •••••••
T
Tell-tale
Alarm System
Tell-tale
Lights
Thermostat, Engine
Thermostat, Radiator
Shutter.
Thermostat, Water Overheat
Tie Rod, Front Axle
Tires
Tools, Special
....
.. .
.
..
Transmission ••
......
Trouble
Shooting
Tune-up,
Engine ••
V
Valve, Air Pressure
Regulating
Valve, Brake Application
......
Valve, Quick Release
Valve, Relay
.......
Ventilation • • • • • • • ••
w
Wheels
and Tires
.......
Windshield Wipers
•o•••••
......
Wiring and Misc. Electrical
Page
171
142
95
169
46
142
101
107
107
89
96
91
11
202
209
179
205
141
47
48
52
53
40
202
38
99

GM COACH MAINTENANCE MANUAL
Sec. 1
Page 7
This group includes instructions on Front End Alignment
and Maintenance and Repair on Front Axle Assembly.
Proper alignment of front wheels must be
maintained to insure efficient steering and satis-
factory tire life. The most important factors of
front end alignment are: Wheel camber, axle cas-
ter, and wheel toe-in.
Front end alignment should be checked at reg-
ular intervals, and particularly after front axle
has been subjected to heavy impacts such as a
collision or a hard curb bump. Before checking
alignment, wheel bearings must be properly ad-
justed since loose bearings will affect instrument
readings when checking camber, king pin inclina-
tion, and toe-in.
When checking alignment, instructions outlined
in this section should be followed carefully, as
well as instructions covering related units such
as brakes, springs, steering gear, hubs and bear-
ings, and wheels and tires which are given in
other sections of this manual.
Front end alignment chart (fig. 1) indicates
points from which alignment dimensions are tak-
en. "Specifications," at end of this section, lists
correct alignment data for each model. This
data should be followed when checking alignment,
and checking should be done with precision equip-
ment and instruments.
ALIGNMENT FACTORS
Front wheel toe-in, front wheel camber, axle
caster, king pin inclination, and steering geometry
are all factors of alignment and may be defined
as follows:
Wheel Toe-In - Distance front wheels are closer
together at front than at rear of axle. (See "J"
and "H" on chart).
Wheel Camber - The amount of wheel inclination
from a vertical position.
Positive Camber - Outward inclination of wheels
at top. (See "c" on chart.)
Zero Camber - No inclination - wheels are held
in vertical position.
Negative or Reverse Camber - Inward inclination
of wheels at top.
Axle Caster - Inclination of king pin from the
vertical in the fore and aft direction of the vehicle.
Positive Caster - Inclination of king pins toward
rear of vehicle. (See "N" on chart.)
Zero Caster -King pins are held in a vertical
position.
Negative or Reverse Caster - Inclination of king
pins
toward front of vehicle.
King Pin Inclination - The slant of the king pin
toward the center of the vehicle at the top, and
outward at the bottom. (See "D" on chart.)
Steering Geometry - The mechanics of keeping
front wheels in proper relative alignment as
wheels are turned to extreme right or left.
FRONT WHEEL TOE-IN
Toe-in offsets the effect of camber, thus pre-
venting cross wear on tires. Since camber and
toe-in are related items, both should be checked
at the same time.
Where maximum allowable camber exists, tie
rod should be adjusted to give wheels maximum
allowable toe-in.
Before checking toe-in and camber, wheels
must be in straight ahead position and correctly
installed, and tires must be properly inflated.
Measure toe-in from centers of tire treads at
height of wheel centers (see "I" and "H" on chart),
using an accurate toe-in gauge.
FRONT WHEEL CAMBER
Camber ("C" on chart) offsets wheel ,deflec-
tion, due to wear of front axle parts, and prevents
a reverse camber condition.
If camber is excessively positive or negative
or is unequal, improper steering and excessive
tire _wear will result.
Camber variations may be caused by wear at
wheel bearings and steering knuckle bushings, or
by a bent steering knuckle or axle center.
CHECKING CAMBER
Before checking camber, check wear at wheel
bearings and king pins as follows:
Jack up front of vehicle, pull bottom of wheel

Sec. 1
Page 8
GM COACH MAINTENANCE MANUAL
FRONT END ALIGNMENT
CAMBER, PIN INCLINATION, ARM AND ROD LOCATIONS
TOE-IN,
ROD AND ARM LOCATIONS
B Minus A ...••.. Camber (Inches)
C
•.••..•..•••.. Camber (Degrees)
D
.....•.....••. King Pin Inclination
E
.•.••..•...••. Bottom of Steering Arm
Above Axle
F
.•............ Top of Tie Rod Below
Spring Seat
G • • .
.•..•..••• Tire Overhang
J Minus H .....•• Toe-In
K • • . • • • . • . . . . . . Relation of Steering Arm
to Center of Axle
FRONT AXLE CASTER
AXLE CENTER TWIST AND PIN INCLINATION
L •• • • • • ••••• • • • •
M
•••••••.•••••••
N ••••• • •••••••••
p
R
T
u Minus S
•...••..
Minus V ...•.••.
C/L of Steering Arm to
Edge of Spring
C/ L of Tie Rod End to
Wheel Rim
Caster Angle
C/L of King Pin
Vertical
I-Beam Twist
King Pin Inclination
Refer to "Wheel Alignment Dimensions" for Numerical Values.
TP 4084-1
Figure 1-Front End Alignment Chart
outward and take a camber reading; then pull top
of wheel outward and take a camber reading. If
readings vary more than 1/4 degree, make fol-
lowing adjustments:
1. Adjust wheel bearings as directed in "HUBS
AND BEARINGS" (SEC. 19);then take camber read-
ings as previously instructed. If readings vary
over 1/4 degree, replace steering knuckle bushings
and king pins as instructed later in this section.
2. Check the wheel run-out as instructed in
"WHEELS AND TIRES" (SEC. 19). If run-out is
excessive, straighten or replace wheel.
3. Place vehicle on level floor, with full
weight on wheels, then take final camber reading.
If camber gauge is not available, readings can be
taken as shown on chart, (fig. 1). Place square
as shown and measure distances "A" and "B~"
"B" should exceed "A" by amount listed in "Spec-
ifications" at end of this section. Camber di-
mensions of right wheel should not vary over
3/32" from camber dimensions of left wheel. If

GM COACH MAINTENANCE MANUAL
Sec. 1
Page 9
final camber reading is incorrect, either steering
knuckle or axle center is bent.
4. To determine which part is bent, check
king pin inclination ("D" on chart). Camber plus
king pin inclination is the included angle of steer-
ing knuckle. If included angle of knuckle varies
more than 1/2 degree from value given in "Spec-
ifications," knuckle is bent and should be replaced.
AXLE CASTER
Caster ("N" on chart) provides the steering
stability necessary to keep wheels in straight
ahead position, assists in bringing vehicle out of
a
turn, and reduces tendency of wheels to shimmy.
Negative caster may cause wandering condition
or difficulty in bringing vehicle out of a turn.
Negative caster may result from sagging springs
or a bent axle.
Excessive positive caster causes wheel shim-
my and hard steering.
Uneven tightening of spring U-bolt nuts will
affect caster; therefore, tighten all U-bolt nuts
equally.
Check caster with full vehicle weight on wheels
and with vehicle empty, using an accurate gauge.
If caster angle does not agree with specified
value, check front axle components to determine
cause.
KING PIN INCLINATION
King pins are inclined ("D," figure 1) to de-
crease friction between tires and road when turn-
ing. Special instruments must be used to check
king pin inclination when axle is installed in ve-
hicle. When axle is removed, check can be made
on bench as follows:
Place two uniform blocks on level surface, then
rest spring seats on blocks as shown in figure 1.
Using square, measure "U" and "v" dimensions.
Front axle assembly is reverse Elliott type.
Axles are equipped with steering knuckles con-
structed as shown in figure 2.
Wheel bearings, springs, and brake parts which
are mounted on front axle, are described in their
respective manual sections.
Specifications and pertinent front acle service
information is given in "Specifications" at end of
section and in Front End Alignment Chart (fig. 1).
FRONT AXLE CONSTRUCTION
Front axle assembly center section is a hol-
low rectangular tube in which dowel pins are in-
stalled to locate spring seats. Outer ends of axle
FRONT AXLE REPAIR
"u" minus "V" equals king pin inclination in inches.
While axle is set up on blocks, check axle
center twist by measuring distances "S" and "T"
(fig. 1). Difference between dimensions "S" and
"T" equals axle center twist. If axle center is
twisted, refer to "Straightening Axle Center," later
in this section for corrective information.
STEERING GEOMETRY
Steering geometry is controlled by length and
angularity of steering arms and linkage. Since
a large part of driving is done with wheels in
turning position, steering geometry is a very im-
portant alignment factor.
All other alignment factors must be correct
and steering arms must be correctly installed be-
fore steering geometry is checked. Check follow-
ing points using alignment instruments. Refer to
figure 1.
1. Relative position of steering arm to axle
spring seat, "E" on chart.
2. Relative position of tie rod to axle spring
seat "F."
3. Relative position of steering arm to cen-
ter line of axle, "K" on charL
4. Center of steering arm to edge of spring,
"L" on chart.
5. Relative position of tie rod ball to wheel
rim, "M" on chart.
The important factors of front end alignment
and the methods of checking and correcting er-
rors are previously listed in this section. How-
ever, other front axle related units should be
maintained in order to obtain correct steering.
Refer to other sections of this manual for cor-
rection of such items as:
Front Wheel and Tire Balance
Front Wheel Bearing Adjustment
Front and Rear Spring Mounting
Steering Gear Adjustment
are solid forgings machined to accommodate steer-
ing knuckles and king pins.
Steering knuckles (fig. 2) are supported on
solid king pins which are tapered at center sec-
tion to fit snugly in tapered holes in axle outer
ends. Nut installed at threaded upper end of each
king pin, locks king pin bushing (3) against spacer
(4) and secures king pin in axle. King pin nuts
are secured by cotter pins.
Load is transmitted from axle center to steer-
ing knuckles through tapered roller thrust bearing
assemblies (9, figo 2). C-overs and plugs (2 and· 9,
fig. 2) exclude dust and moisture from knuckle
bushings and serve as lubricant seals. Steering
knuckle bushings can be replaced when necessary.

Sec. 1
Page 10
GM COACH MAINTENANCE MANUAL
FRONT AXLE REPAIR
1 King Pin Nut
2 King Pin Cover
3 King
Pin Bushing
4 Spacing Washer
5 Axle Center End
6 King Pin
7 Expansion Plug
8 Steering Knuckle
Bushing
9 Thrust Bearing
Assembly
10 Steering Knuckle
TP-6335
Figure 2-Steering Knuckle Cross Section
Stop screws installed at each end of center limit
turning angle of front wheels.
FRONT AXLE GENERAL MAINTENANCE
INSPECTION
Following inspection operations should be per-
formed at intervals determined by severity of
service.
L Inspect spring U-bolts for tightness. Tight-
en as directed in SPRING SUSPENSION (SEC. 15).
2.
Inspect and tighten tie rod arm and steer-
ing arm nuts. Torque specifications are shown
in "Specifications" at end of this section.
3. Inspect steering arm and tie rod arm nuts
for looseness. Tighten if necessary. Also inspect
tie rod end stud nuts for looseness and check tie
rod ends for wear.
4. When steering difficulty or abnormal tire
wear indicate necessity, check front end align-
ment as previously instructed under "Front End
Alignment."
5. Check stop screws and adjust when neces-
sary. Stop screw adjustment procedure is des-
cribed later.
6. Lubricate front axle parts as instructed
in LUBRICATION (SEC. 13).
7. When lubricating front axle parts, observe
condition of seals at steering knuckle, tie rod ends,
and drag link. If seals are found to be damaged
or missing, new seals should be installed imme-
diately.
8. Periodical inspection should be made at
steering knuckles to determine if excessive up-
and-down movement of knuckles on king pins
exists. Since excessive pounding will damage
thrust bearing (9, fig. 2) the up-and-down move-
ment of steering knuckles must be kept within
prescribed limits. Shims for use in reducing
clearance are available. Refer to "ADJUSTMENTS"
later in section for method of checking clearance
and making shim installation.
ADJUSTMENTS
A
number of difficulties found during front end
alignment check can be corrected by making ad-
justments at front axle assembly. Among these
adjustments are; wheel bearing adjustment, tie
rod and drag link adjustment, stop screw adjust-
ment and brake adjustment. All the above men-
tioned adjustment procedures except tie rod and
stop screw adjustment are covered in other sec-
tions of manual.
TIE ROD ADJUSTMENT
Tie rod adjustment is necessary whenever
front wheel toe-in is found to be incorrect. Ad-
just tie rod as follows:
1. Set front wheels in straight-ahead position.
2. Loosen clamp bolts at both ends of tie rod.
3. Use pipe wrench to turn tie rod tube as
required to correct toe in measurement. Refer
to "FRONT END ALIGNMENT" previously in this
section for method of measuring toe-in.
4. When adjustment is completed, make sure
tie rod ends are in same plane, then tighten
clamp bolts.
STOP SCREW ADJUSTMENT
Stop screws installed in front axle center limit
front wheel turning angle to right and left. Stop
screws must be set properly to give equal turn-
ing radius to the right and to left, as well as to
limit turning angle and thereby prevent interfer-
ence between front tires and other parts of coach.
Before setting stop screws, refer to STEER-
ING GEAR (SEC. 16) and be sure pitman arm is
properly installed on steering gear and be sure
steering gear drag link is properly adjusted for
length and not distorted or bent.
Adjust stop screws as follows:
1. Raise front axle until front wheels are off
floor.
2. Turn front wheels to extreme left. In this
position there should be 1 /2 inch clearance be-
tween tire and drag link. If necessary, turn stop
screw in or out to provide 1 /2 inch clearance
mentioned above. Secure stop screw setting with
lock nut.
3. With wheels turned to extreme left posi-
tion measure and record distance from left front
tire to outer edge of front spring at nearest point.

GM COACH MAINTENANCE MANUAL
Sec. 1
Page 11
4. Turn wheels to extreme right position and
measure distance from right front tire to outer
edge vf front spring at nearest point. If this di-
FRONT AXLE REPAIR
mension is not same as the corresponding dimen-
sion at left-hand side of coach, adjust right stop
screw to provide same dimensions.
FRONT AXLE OVERHAUL
Steering knuckes, king pins, and bushings can
be replaced, and minor axle straightening can be
performed, without removing front axle assembly
from vehicle. However, when front axle assembly
requires a complete overhaul, the assembly may
be removed, overhauled and installed, as described
below.
Certain preliminary inspections can be made,
while axle is still mounted on vehicle, which will
aid in determining the amount of repair work
necessary. Check front end alignment as directed
in "Front End Alignment" previously in this sec-
tion. Inability to align front end correctly indi-
cates that axle center or steering knuckle has
been distorted, steering arms have been bent, or
bushings in steering knuckle yokes are worn be-
yond limits. Repair procedures on such items as,
brakes, shock absorbers, wheel bearings, and
steering gear are covered in respective sections of
this manual.
FRONT AXLE REMOVAL
1. Loosen wheel nuts, then raise front of ve-
hicle with jack or chain hoist and block vehicle
behind front axle.
2. Disconnect drag link from steering arm
by removing drag link end stud nut and driving
tapered stud out of arm at steering knuckle.
3. Disconnect air lines at brake chambers.
4. Disconnect shock absorbers and both ends
of each front spring in manner described in
SPRING SUSPENSION (SEC. 15).
NOTE: U-bolts which clamp springs onto axle
may be removed to permit removal of axle as-
sembly without removing front springs. Refer to
SPRING SUSPENSION (SEC. 15) for details of
spring installation.
5. After axle assembly has been completely
detached from coach, roll the assembly out from
under vehicle.
TIE ROD REPAIR
Tie rod assembly used is three-piece type
comprised of a rod and two end assemblies. Tube
is threaded into ends and locked with clamp bolts.
Right-and left-hand threads are provided on tie
rod to facilitate toe-in adjustment.
Tie rod ends (fig. 3) are constructed so as to
automatically compensate for wear on bearing
surfaces. Tie rod end stud is held in contact
with bearing surfaces by tension of spring which
holds seat firmly against inner end of stud. Tie
rod end parts are held in place by an end plug
retained by lock ring.
Normal wear on bearing surface in tie rod
end, will cause increase in overall height of as-
sembly. If excessive play is noted, the parts
which are worn must be replaced, or a new
tie rod end assembly must be installed.
TIE ROD DISASSEMBLY (Fig. 4)
1. Remove cotter pins and nuts from tie rod
ends, support steering arm to prevent bending then
drive tie rod end tapered stud out of steering arm.
Remove spring (2), dust cover (3 ), seal (4), and
retainer (5) from stud.
2. Loosen clamp bolts, then remove tie rod
end assembly from tube.
3. Pry end plug lock (15) out of groove in
body (7); then remove plug (14), seat and spring
(12 and 13), and grease retainer (11). Stud and
bearing assembly can now be removed from body.
INSPECTION
Clean all parts of tie rod end then inspect
parts for wear and check tension of spring (13,
fig.
4). Discard worn parts and replace spring
if broken or weak.
ASSEMBLING TIE ROD ENDS (Fig. 4)
1. Lubricate parts with lubricant specified in
LUBRICATION (SEC. 13) before assembling tie
rod ends.
TP 0082
Figure 3-Tie Rod End Construction