Landoll 302D-B User manual

®
302D-B/305D-B
Bottom Dump Semitrailer
Operators Manual
LANDOLL CORPORATION
1900 North Street
Marysville, Kansas 66508
[phone]
800-428-5655 ~ WWW.LANDOLL.COM
F-1044-0719 06/2019 - Present

F-1044-0719

i
Table of Contents
1 Introduction and Safety Information
Introduction .................................................................. 1-1
Understanding Safety Statements ................................................ 1-2
2 Standard Specifications
Model 302D-B/305D-B .......................................................... 2-1
Specific Bolt Torque ........................................................... 2-2
General Torque Specifications (rev. 4/97) .......................................... 2-3
Hydraulic Fitting Torque Specifications ........................................... 2-4
3 Operating Instructions
General ...................................................................... 3-1
Parking Brake ............................................................ 3-1
Air Brake System .......................................................... 3-1
Disc Brakes .............................................................. 3-1
Anti-Lock Brake System (ABS) ............................................... 3-1
Pre-Coupling of Semitrailer and Tractor ........................................ 3-2
Coupling the Tractor to the Semitrailer ......................................... 3-3
Electrical ................................................................ 3-3
Tractor and Semitrailer Check-Out ............................................ 3-4
Towing the Semitrailer ...................................................... 3-4
Parking the Trailer ......................................................... 3-5
Uncoupling Towing Vehicle from Semitrailer ..................................... 3-5
Anti-Lock Brake System (ABS) ............................................... 3-6
Cold Weather Operation .................................................... 3-7
Hot Weather Operation ..................................................... 3-7
Rocking Upper Coupler Compatibility .......................................... 3-7
Gate Control Valve Operation ................................................ 3-7
Gate Operation ........................................................... 3-8
Clamshell Gate Air System Filter and Lubricator ................................. 3-9
Oil Rate Delivery Adjustment ................................................ 3-9
4 Maintenance and Lubrication
Maintenance Schedule ......................................................... 4-1
Inspection ............................................................... 4-1
Lubrication ............................................................... 4-1
Maintenance Procedures ................................................... 4-3
Gooseneck, Frame, and Deck ................................................ 4-7
Electrical System .............................................................. 4-7
Alignment ................................................................... 4-11
Wheel Alignment ......................................................... 4-11
Axle Alignment .......................................................... 4-13
Manual Alignment Procedure ............................................... 4-13
Brake System Maintenance ..................................................... 4-14

ii F-1044-0719
TABLE OF CONTENTS
General ................................................................4-14
Spring Air Brake Chambers .................................................4-14
Caging the Power Spring ...................................................4-14
Removal ................................................................4-15
Installation ..............................................................4-15
Emergency Relay Valve Maintenance .........................................4-15
Brake Assembly Maintenance ...............................................4-15
Brake Adjustment ........................................................4-16
Disassembly for 16-1/2” x 7" Brakes ..........................................4-16
Reassembly for 16-1/2 x 7" Brakes ...........................................4-16
Automatic Slack Adjuster ......................................................4-18
Operational Check ........................................................4-18
Replacing Slack Adjuster ...................................................4-18
Adjusting Slack Adjuster ...................................................4-19
Hub and Drum Maintenance ....................................................4-20
Wheel Bearing Lubrication and Adjustment .....................................4-22
Adjustment ..............................................................4-22
Tire Maintenance .............................................................4-22
Tire Inflation .............................................................4-22
Tire Matching ............................................................4-23
Tape Measuring Method ...................................................4-23
Tire Changing Procedure ...................................................4-23
Straight Edge or String Method ..............................................4-23
Mounting Tire and Wheel ...................................................4-23
5 Troubleshooting Guide
Electrical .....................................................................5-1
Tires - Wheels - Suspension .....................................................5-2
Brakes .......................................................................5-4
Brake Drums ..................................................................5-6

1-1
TABLE OF CONTENTS Chapter 1
Introduction and Safety Information
Introduction
This manual provides operating, servicing, and maintenance instructions for Model 440B/455B Semitrailer,
manufactured by Landoll Corporation, Marysville, Kansas 66508.
CHAPTER 1 Gives basic instructions on the use of this manual and understanding the safety
statements.
CHAPTER 2 Gives product specifications for the trailer, including measurements and component
specifications. A Standard Bolt Torque Table is provided to give guidelines for bolt
torques to be used when servicing this product.
CHAPTER 3 Gives instructions for the proper operation of the equipment.
CHAPTER 4 Gives general maintenance procedures, a maintenance schedule, and a lubrication
schedule. Improper maintenance will void your warranty.
IF YOU HAVE ANY QUESTIONS CONTACT:
LANDOLL CORPORATION
1900 NORTH STREET
MARYSVILLE, KANSAS 66508
PHONE # [phone] or [phone]
OR
FAX # [phone]
CHAPTER 5 Is a troubleshooting guide to aid in diagnosing and solving problems with the trailer.
PARTS MANUAL Is a separate manual showing the various assemblies, subassemblies, and systems.
Refer to that manual when ordering Landoll replacement parts. Order parts from your
Landoll dealer.
WARRANTY The Warranty Registration is done at the Landoll Website and should be done at time of
sale by an Authorized Landoll dealership.
NOTE: IMPROPER ASSEMBLY, MODIFICATION, OR MAINTENANCE OF YOUR
LANDOLL MACHINE CAN VOID YOUR WARRANTY.
COMMENTS Address comments or questions regarding this publication to:
LANDOLL CORPORATION
1900 NORTH STREET
MARYSVILLE, KANSAS 66508
ATTENTION: PUBLICATIONS - DEPT. 55

1-2 F-1044-0719
INTRODUCTION AND SAFETY INFORMATION
TABLE OF CONTENTS
Understanding Safety
Statements
You will find various types of safety information on the
following pages and on the machine signs (decals)
attached to the vehicle. This section explains their
meaning.
The Safety Alert Symbol means ATTENTION! YOUR
SAFETY IS INVOLVED!
DANGER
WARNING
CAUTION
NOTE
Means that failure to follow these instructions could
cause damage to the equipment or cause it to operate
improperly.
NOTE
Make sure you read and understand the information
contained in this manual and on the machine signs
(decals) before you attempt to operate or maintain this
vehicle.
The safety statements contained in this manual
relate to the operation of the Model 440B/455B
semitrailer.
Danger means a life-threatening situation exists.
Death can occur if safety measures or
instructions on this label are not properly
followed.
Warning means serious injury or death can occur
if safety measures or instructions on this label
are not properly followed.
Caution means serious equipment or other
property damage can occur if instructions on this
label are not properly followed.

2-1
TABLE OF CONTENTS Chapter 2
Standard Specifications
Table 2-1: Trailer Standard Specifications
NOTICE
Model 302D-B/305D-B
DRY WEIGHT
MODEL 302D-B 11,350 LBS
MODEL 305D-B 12,945 LBS
HEIGHT
MODEL 302D-B/305D-B 8 FT. 9 IN.
HOPPER CAPACITY, OPENING & LOAD TARGET AREA
MODEL 302D-B 21 CU YDS
MODEL 305D-B 21 CU YDS
MODEL 302D-B/305D-B GATE OPENING 59 IN. X 117 IN.
MODEL 302D-B/305D-B LOAD TARGET AREA 16 FT 0 IN.
GENERAL SPECIFICATIONS
GOOSENECK Fifth Wheel w/Lateral Rocking Plate
ELECTRICAL HOOKUP 7-Way Connector
AIR HOOKUP Color Coded Glad Hands
CYLINDER 7x30 PNEUMATIC CYLINDER
PIN SETTING
302D-B 18 IN
305D-B 18 IN
Overall Length (Does not include push bumper option)
302D-35/39/43 35 FT. 3.5 IN /39 FT. 3.5 IN. /43 FT. 3.5 IN.
305D-39/43 39 FT. 3.5 IN. /43 FT. 3.5 IN.
INDIVIDUAL TRAILER LOAD CAPACITIES ARE
RATED FOR THE SPECIFIC TIRE AND WHEEL
LISTED ON THE VEHICLE IDENTIFICATION
PLATE LOCATED ON THE FRONT OF THE
TRAILER. USING A TIRE OR WHEEL OTHER
THAN THE ONE LISTED MAY RESULT IN A
LOWER TRAILER LOAD CAPACITY.

2-2 F-1044-0719
STANDARD SPECIFICATIONS
TABLE OF CONTENTS
Table 2-2: Specific Bolt Torque
Specific Bolt Torque
STANDARD SPRING RIDE SUSPENSION
AXLE CLAMP U-BOLTS** 300 FT. LBS.
EQUALIZER BEAM PIVOT BOLT** 480-500 FT. LBS.
TORQUE ARM BOLT** 250 FT. LBS.
TORQUE ARM CLAMP NUTS** 60 FT. LBS.
AIR SPRING MOUNTING
1/2” 35 FT. LBS
3/4” 35 FT. LBS
WHEEL FASTENERS - ALL MODELS
OUTER SPINDLE NUTS 250 - 400 FT. LBS.
PILOT WHEEL NUTS 450 - 500 FT. LBS.
NOTE: Capacity ratings are frame capacities only. Actual load capacities may be restricted by factors such as gross
axle weight ratings (GAWR) or state and federal regulations. Tires, brakes, axles, or wheels may also limit capacity.
**Axle clamp U-bolt, equalizer beam, arm bolt and arm clamp nuts must be checked every 3 months, at every
routine Preventive Maintenance interval and at every brake relining and should be included as a visual pre-trip
inspection point.**

STANDARD SPECIFICATIONS
2-3
TABLE OF CONTENTS
General Torque
Specifications (rev. 4/97)
Table 2-3: General Torque Specifications
TORQUE SPECIFIED IN FOOT POUNDS - This chart provides tightening torques for general purpose applications
when special torques are not specified on process or drawing. Assembly torques apply to plated nuts and capscrews
assembled without supplemental lubrication (as received condition). They do not apply if special graphite moly-disulfide or
other extreme pressure lubricants are used. When fasteners are dry (solvent cleaned) add 33% to as received condition
torque. Bolt head identification marks indicate grade and may vary from manufacturer to manufacturer. Thick nuts must be
used on grade 8 capscrews. Use value in [ ] if using prevailing torque nuts.
UNC
SIZE
SAE
Grade 2
SAE
Grade 5
SAE
Grade 8
UNF
SIZE
SAE
Grade 2
SAE
Grade 5
SAE
Grade 8
1/4-20 4 [5] 6 [7] 9 [11] 1/4-28 5 [6] 7 [9] 10 [12]
5/16-18 8 [10] 13 [13] 18 [22] 5/16-24 9 [11] 14 [17] 20 [25]
3/8-16 15 [19] 23 [29] 35 [42] 3/8-24 17 [21] 25 [31] 35 [44]
7/16-14 24 [30] 35 [43] 55 [62] 7/16-20 27 [34] 40 [50] 60 [75]
1/2-13 35 [43] 55 [62] 80 [100] 1/2-20 40 [50] 65 [81] 90 [112]
9/16-12 55 [62] 80 [100] 110 [137] 9/16-18 60 [75] 90 [112] 130 [162]
5/8-11 75 [94] 110 [137] 170 [212] 5/8-18 85 [106] 130 [162] 180 [225]
3/4/10 130 [162] 200 [250] 280 [350] 3/4-16 150 [188] 220 [275] 320 [400]
7/8-9 125 [156] 320 [400] 460 [575] 7/8-14 140 [175] 360 [450] 500 [625]
1-8 190 [237] 408 [506] 680 [850] 1-14 210 [263] 540 [675] 760 [950]
1-1/8-7 270 [337] 600 [750] 960 [1200] 1-1/8-12 300 [375] 660 [825] 1080 [1350]
1-1/4-7 380 [475] 840 [1050 1426 [1782] 1-1/4-12 420 [525] 920 [1150] 1500 [1875]
1-3/8-6 490 [612] 1010 [1375] 1780 [2225] 1-3/8-12 560 [700] 1260 [1575] 2010 [2512]
1-1/2-6 650 [812] 1460 [1825] 2360 [2950] 1-1/2-12 730 [912] 1640 [2050] 2660 [3325]
1-3/4-5 736 [920] 1651 [2063] 2678 [3347] 1-3/4-12 920 [1150] 2063 [2579] 3347 [4183]
METRIC:
Coarse thread metric class 10.9 fasteners and class 10.0 nuts and through hardened flat washers, phosphate coated,
Rockwell “C” 38-45. Use value in [ ] if using prevailing torque nuts.
Nominal
thread
diameter
(mm)
Newton
Meters
(Standard
Torque)
Foot Pounds
(Standard
Torque)
Nominal
Thread
Diameter
(mm)
Newton
Meters
(Standard
Torque)
Foot Pounds
(Standard
Torque
6 10 [14] 7 [10] 20 385 [450] 290 [335]
7 16 [22] 12 [16] 24 670 [775] 500 [625]
8 23 [32] 17 [24] 27 980 [1105] 730 [825]
10 46 [60] 34 [47] 30 1330 [1470] 990 [1090]
12 80 [125] 60 [75] 33 1790 [1950] 1340 [1450]
14 125 [155] 90 [115] 36 2325 [2515] 1730 [1870]
16 200 [240] 150 [180] 39 3010 [3210] 2240 [2380]
18 275 [330] 205 [245]

2-4 F-1044-0719
STANDARD SPECIFICATIONS
TABLE OF CONTENTS
Hydraulic Fitting Torque
Specifications
Table 2-4: Hydraulic Fitting Torque Specifications
TORQUE IS SPECIFIED IN FOOT POUNDS- 37oJIC, ORS, & ORB (REV. 10/97)
This chart provides tightening torques for general purpose applications when special torques are not specified on process or
drawing. Assembly torques apply to plated nuts and capscrews assembled without supplemental lubrication (as received
condition). They do not apply if special graphite moly-disulfide or other extreme pressure lubricants are used. When fasteners are
dry (solvent cleaned) add 33% to as received condition torque. Bolt head identification marks indicate grade and may vary from
manufacturer to manufacturer. Thick nuts must be used on grade 8 capscrews. Use value in [ ] if using prevailing torque nuts.
Parker Brand Fittings
Dash Size 37 Degree JIC O-Ring (ORS) O-Ring Boss (ORB)
-4 11-13 15-17 13-15
-5 14-16 --------------- 21-23
-6 20-22 34-36 25-29
-8 43-47 58-62 40-44
-10 55-65 100-110 58-62
-12 80-90 134-146 75-85
-16 115-125 202-218 109-121
-20 160-180 248-272 213-237
-24 185-215 303-327 238-262
-32 250-290 -------------- 310-340
Gates Brand Fittings
Dash Size 37 Degree JIC O-Ring (ORS) O-Ring Boss (ORB)
-4 10-11 10-12 14-16
-5 13-15 --------------- ---------------
-6 17-19 18-20 24-26
-8 34-38 32-40 37-44
-10 50-56 46-56 50-60
-12 70-78 65-80 75-83
-14 -------------- 65-80 --------------
-16 94-104 92-105 111-125
-20 124-138 125-140 133-152
-24 156-173 150-180 156-184
-32 219-243 -------------- --------------
Aeroquip Brand Fittings
Dash Size 37 Degree JIC O-Ring (ORS) O-Ring Boss (ORB)
-4 11-12 10-12 14-16
-5 15-16 --------------- 16-20
-6 18-20 18-20 24-26
-8 38-42 32-35 50-60
-10 57-62 46-50 75-80
-12 79-87 65-70 125-135
-14 -------------- -------------- 160-180
-16 108-113 92-100 200-220
-20 127-133 125-140 210-280
-24 158-167 150-165 270-360
-32 245-258 -------------- --------------