DORSEY SC20 Instruction Manual

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PARTS CATALOG & MAINTENANCE MANUAL
SC20
23.5’ CONTAINER CHASSIS
TANDEM SPRING SLIDER

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PARTS CATALOG & MAINTENANCE SCHEDULE, FIRST RELEASE
Published by PITTS ENTERPRISES, LLC.
Copyright © 2018 by Pitts Enterprises. All rights reserved. This is a copyright work and Pitts
Enterprises and it’s suppliers reserve all work in and to the work. You may not decompile, dis-
assemble, reverse engineer, reproduce, modify, or create derivative works based upon the
work without prior consent. You may use the work for your own noncommercial & personal
use. Any other use of the work is strictly prohibited.
PITTS ENTERPRISES
TELEPHONE: [phone]
FAX:
WEBSITE: WWW.PITTSENTERPRISES.NET
ADDRESS: 5734 Pittsview Hwy, Pittsview, AL 36871
DORSEY INTERMODAL
TELEPHONE: 855-4-CHASSIS
FAX:
WEBSITE: WWW.DORSEYINTERMODAL.COM
ADDRESS: 5734 Pittsview Hwy, Pittsview, AL 36871

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TABLE OF CONTENTS
GENERAL DIMENSIONS................................................................. 4
MAINTENANCE SCHEDULE .......................................................... 5
MAIN FRAME......................................................................................6
KINGPIN & UPPER COUPLER ........................................................7
SLIDER ASSEMBLY..........................................................................10
LOCKING DEVICES...........................................................................13
SUSPENSION ....................................................................................15
AXLES................................................................................................. 20
RIM & TIRE ......................................................................................... 23
TIRE INFLATION ............................................................................... 25
LANDING GEAR................................................................................ 27
BRAKE SYSTEM ................................................................................31
ELECTRICAL ..................................................................................... 36
LIGHTING ........................................................................................... 38
DECALS.............................................................................................. 39
WARRANTY........................................................................................ 40

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GENERAL DIMENSIONS

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RECOMMENDED MAINTENANCE SCHEDULE
INITIAL
PERIOD
EVERY
MONTH
EVERY
THREE
MONTHS
EVERY
FOUR
MONTHS
EVERY
SIX
MONTHS
EVERY
TWELVE
MONTHS
AT BRAKE
RE-LINE
FRAME STRUCTURE X
FRAME FASTENERS X
FRAME FASTENERS TORQUE &
CORROSION X
KINGPIN & UPPER COUPLER
X
30,000
LOCKING DEVICES X
LANDING GEAR LUBRICATION X
LANDING GEAR HARDWARE X
SUSPENSION STRUCTURE X
SUSPENSION FASTENERS
TORQUE & CORROSION 1,000 X
PIN CAGE FASTENERS TORQUE 1,000 X
HUB CAP & WHEEL SEALS X
BRAKE ADJUSTMENT & RE-
PACK WHEEL BEARINGS X
BRAKE LINING WEAR X
CAMSHAFT COMPONENTS &
LUBRICATION X
BRAKE ADJUSTER & CLEVISES
LUBRICATION X
BRAKE DRUM X
WHEEL END COMPONENTS
X
100,000
BRAKE CHAMBERS & SLACK
ADJUSTERS X
100,000
LUG NUTS & HUB CAP NUTS 50-100 X
BRAKE CHAMBER PUSH ROD X
AIR BRAKE SYSTEM X
ELECTRICAL SYSTEM X

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MAIN FRAME ASSEMBLY
VISUAL INSPECTION
BEFORE EACH OPERATION
PERIODIC INSPECTION
EVERY THREE MONTHS
• MISSING COMPONENTS
• FASTERNERS
• CRACKED WELDS
• CRACKED METAL
• DISTORTED COMPONENTS
• LOCKING DEVICES FUNCTIONING PROPERLY
• SLIDER LOCK PIN S FUNCTIONING PROPERLY
• LARGE ARES OF MISSING PAINT
• ADNORMAL WEAR
WARNING
DAMAGED PARTS, CRACKED WELDS, OR ADNORMAL WEAR MAY
RESULT IN PROPERTY DAMAGE, SERIOUS INJURY, OR DEATH.

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KINGPIN & UPPER COUPLER ASSEMBLY
VISUAL INSPECTION
BEFORE EACH OPERATION
• CRACKED WELDS
• CRACKED METAL
• DISTORTED COMPONENTS
• LARGE ARES OF MISSING PAINT
• ADNORMAL WEAR
PERIODIC INSPECTION
EVERY THREE MONTHS OR
30,000 MILES
• USING A 48 INCH STRAIGHT EGDE, CHECK THE FLATNESS IN ALL
DIRECTIONS. ANY BUMPS, VALLEYS OR WARPING WILL CAUSE
UNEVEN LOADING OF THE FIFTH WHEEL, WHICH COULD RESULT
IN DAMAGE TO THE TOP PLATE & POOR LOCK LIFE. REPLACE THE
CHASSIS UPPER COUPLER PLATE IF FLATNESS EXCEEDS THE
SPECIFICATIONS SHOWN BELOW.
WARNING
DAMAGED PARTS, CRACKED WELDS, OR ADNORMAL WEAR MAY
RESULT IN PROPERTY DAMAGE, SERIOUS INJURY, OR DEATH.

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KINGPIN
VISUAL INSPECTION
BEFORE EACH OPERATION
• CRACKED WELDS
• CRACKED METAL
• DISTORTED COMPONENTS
• ADNORMAL WEAR
• NICKS
• GOUGES
PERIODIC INSPECTION
EVERY THREE MONTHS OR
30,000 MILES
• USING A KINGPIN GAUGE CHECK THE KINGPIN LENGTH.
• USING A KINGPIN GAUGE CHECK THE WEAR ON BOTH THE 2
INCH AND 2.88 INCH DIAMETERS. REPLACE THE KINGPIN IF THE
APPROPRIATE DIAMETERS ENTERS THE GAGE SLOT.
WARNING
DAMAGED PARTS, CRACKED WELDS, OR ADNORMAL WEAR MAY
RESULT IN PROPERTY DAMAGE, SERIOUS INJURY, OR DEATH.

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MAIN FRAME & UPPER COUPLER
COMPONENTS
KINGPIN
FRIDINGEN
141125303
UPPER COUPLER PLATE
DORESY INTERMODAL
17-PRT-AP475
LANDING GEAR BRACKET
DORESY INTERMODAL
17-PRT-AP462
LANDING GEAR REINFORCEMENT
DORESY INTERMODAL
CURBSIDE: 17-PRT-AP463
ROADSIDE:: 17-PRT-AP464
LANDING GEAR CROSS BRACE
DORESY INTERMODAL
17-PRT-AP013
LANDING GEAR CLIP
DORESY INTERMODAL
17-PRT-AN042
GLADHAND PLATE
DORESY INTERMODAL
17-PRT-AP456
TRIP ANGLE
DORESY INTERMODAL
17-PRT-AP465
SLIDER WEAR PLATE
DORESY INTERMODAL
17-PRT-AP467

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SLIDER ASSEMBLY
VISUAL INSPECTION
BEFORE EACH OPERATION
PERIODIC INSPECTION
EVERY THREE MONTHS
• MISSING COMPONENTS
• FASTERNERS
• CRACKED WELDS
• CRACKED METAL
• DISTORTED COMPONENTS
• LARGE ARES OF MISSING PAINT
• ADNORMAL WEAR
WARNING
DAMAGED PARTS, CRACKED WELDS, OR ADNORMAL WEAR MAY
RESULT IN PROPERTY DAMAGE, SERIOUS INJURY, OR DEATH.