Landoll LT10A Series User manual

F-876-1217 12/2017
LANDOLL CORPORATION
1900 North Street
Marysville, Kansas 66508
[phone]
800-428-5655 ~ WWW.LANDOLL.COM
Model LT10A, LT12A, & LT14A Series
Tag Trailer
Operator’s Manual

F-876-1217 Edition i
Table of Contents
1 Introduction and Safety Information
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Understanding Safety Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
2 Standard Specifications
General Torque Specifications (rev. 4/97) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Hydraulic Fitting Torque Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
3 Operating Instructions
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Pre-Coupling of Trailer and Truck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Coupling of the Towing Vehicle to the Trailer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Towing Vehicle and Trailer Hook-up and Check-out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Towing the Trailer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Parking the Trailer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Uncoupling Towing Vehicle From Trailer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Loading the Trailer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Unloading the Trailer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Cold Weather Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Hot Weather Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
4 Maintenance and Lubrication
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Maintenance Schedule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Maintenance Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Repair Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Tools and Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Standard Torque Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Frame and Decks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5
Electrical System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Brake System Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Hub and Drum Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Wheel Bearing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Suspension Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

ii F-876-1217
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Tire Inflation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Wheels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Hydraulic Cushion Cylinder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Hydraulic System W/ Flow Control Valve Filling Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
5 Troubleshooting Guide
Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Tires - Wheels - Suspension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Electric Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
Surge Hydraulic Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
Bed Tilt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
Hydraulic System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8

1-1
Chapter 1
Introduction and Safety Information
Introduction
This manual provides operating, servicing, and maintenance instructions for Models LT10A, LT12A, & LT14A Series,
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, sub-assemblies, and systems.
Refer to that manual when ordering Landoll replacement parts. Order parts from your
Landoll dealer.
WARRANTY The Warranty Registration form is included with the product documents. Fill it out and
mail it within 15 days of purchase.
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-876-1217 Edition
INTRODUCTION AND SAFETY INFORMATION
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 Models LT10A, LT12A, & LT14A
Series.
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
Chapter 2
Standard Specifications
MODEL LT10A, LT12A, LT14A SERIES
CAPACITY (FRAME DESIGN)
MODEL: LT1016A, LT1016+4A, LT1020A 10,000 LBS.
MODEL: LT1216+4A, LT1220A 12,000 LBS.
MODEL: LT1420A, LT1422A 14,000 LBS.
OVERALL WIDTH
ALL MODELS 8’-6”
WEIGHT
LT1016A 3,150 LBS.
LT1016+4A, LT1020A 3,500 LBS.
LT1216+4A, LT1220A 3,700 LBS.
LT1420A, LT1422A (W/ Pintle Hitch) 4,350 LBS.
LT1420A & LT1422A (W/ Gooseneck Hitch) 5,520 LBS.
HITCH
STD - 2-5/16” Ball Hitch or 3” I.D. Pintle Eye
Option - Gooseneck W/ 2-5/16” Ball Hitch

2-2 F-876-1217 Edition
STANDARD SPECIFICATIONS
DECK LENGTH
LT1016A 16’ Flat Deck
LT1016+4A, LT1216+4A 16’ Tilt Deck + 4’ Stationary
LT1020A, LT1220A, LT1420A, LT1422A 20’ Tilt Deck
LOAD ANGLE
LT1016A 12.4°
LT1016+4A, LT1020A, LT1216+4A, LT1220A 11.4°
LT1420A, LT1422A 12.1°
AIR RIDE SUSPENSION
12” X 2” Electric Brake Mounting Nut 30 - 35 FT. LBS.
12-1/4” X 3-3/8” Electric Brake Mounting Nut 75 - 85 FT. LBS.
1/2” Diameter Wheel Nuts 90 - 120 FT. LBS.
5/8” Diameter Wheel Nuts 275 - 325 FT. LBS.
NOTE: For General Torque Specifications, Refer To Table 2-1.

STANDARD SPECIFICATIONS
2-3
General Torque Specifications
(rev. 4/97)
Table 2-1: 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]
716 [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-876-1217 Edition
STANDARD SPECIFICATIONS
Hydraulic Fitting Torque
Specifications
Table 2-2: 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 ----- -----