Hutch - Vulcan | On

Hutch - Vulcan | On
B-137
TECHNICAL BULLETIN
1-800-237-0022
Page 1 of 10
Stock No. H26 - MODULAR CENTER HANGER MOUNTING KIT, SPLIT BUSHING
Stock No. H32 - MODULAR CENTER HANGER MOUNTING KIT
CONCEPT:
This mounting kit, when used with our standard L02 load cells, will to fit into multi-leaf trailer
suspensions without modifying the trailer frame. (U.S. PATENT 5,861,581)
APPLICATION:

Compatible with cast or fabricated Hutch H-7700, H-9600, H-9700, Transpro model 86
and 88 suspension systems up to 67" axle spreads, and Fruehauf F-2 suspension
systems up to 67" axle spreads.

Designed for multi-axle suspensions; Tandem axles require two load cells and mounting
kits, Tri-axle and Quad-axle suspensions require four load cells and mounting kits.

Fits undermount and split bushing applications.

Either Hutch or Severson Industries (urethane) single hole equalizer bushings must be
used with all center hanger load cells.
SPLIT BUSHING TORQUE
ARM CONNECTOR
(H26 ONLY)
Figure 137-A
Stress-Tek, Inc. USA,
5920 S. 194th Street, Kent, WA 98032
253-872-1910 FAX: 253-872-9626
Rev. C
Stress-Tek, Inc. Canada, 11-1642 Langan Avenue, Pt. Coquitlam, BC V3C 1K5 604-944-1481 FAX: 604-944-1482
© STRESS-TEK, INC. 2001
B-137
TECHNICAL BULLETIN
1-800-237-0022
Page 2 of 10
SPECIFICATIONS:

CAPACITY:
25,000 lb per axle, maximum capacity.

ACCURACY:
Typical system error less than 1% of capacity for 2-axle
suspensions only. Three and four axle suspensions may vary
more than 1% depending on configuration.

MATERIAL:
High strength steel.
Figure 137-B H26 Split Bushing Hanger Shown
Stress-Tek, Inc. USA,
5920 S. 194th Street, Kent, WA 98032
253-872-1910 FAX: 253-872-9626
Rev. C
Stress-Tek, Inc. Canada, 11-1642 Langan Avenue, Pt. Coquitlam, BC V3C 1K5 604-944-1481 FAX: 604-944-1482
© STRESS-TEK, INC. 2001
B-137
TECHNICAL BULLETIN
1-800-237-0022
Page 3 of 10
Figure 137-C H32 Hanger Shown
EQUALIZER AND SUSPENSION REQUIREMENTS:
VULCAN Center Hanger Mounting Kits are designed for spring suspensions with a 49" to 67"
axle spacing. We found optimum performance can be achieved by using the following
components:
1. EQUALIZER - A Hutch fabricated equalizer should be used.
2. EQUALIZER BUSHING - For most applications, Severson Industries Urethane Bushing
(Part No. A80Bl8666) will provide the best service. Hutch single hole rubber bushings
may also be used.
3. NO HOP AND UNDER SLUNG SUSPENSIONS – This scale system is not compatible
with NO HOP AND UNDER SLUNG SUSPENSIONS. The non-level torque arm in these
suspensions can divert a significant amount of weight away from the load cell causing
scale inaccuracies. We recommend that the suspension be converted to a standard
suspension where the torque arm is close to horizontal.
Stress-Tek, Inc. USA,
5920 S. 194th Street, Kent, WA 98032
253-872-1910 FAX: 253-872-9626
Rev. C
Stress-Tek, Inc. Canada, 11-1642 Langan Avenue, Pt. Coquitlam, BC V3C 1K5 604-944-1481 FAX: 604-944-1482
© STRESS-TEK, INC. 2001
B-137
TECHNICAL BULLETIN
1-800-237-0022
Page 4 of 10
ADDITIONAL PARTS NEEDED, STRESS-TEK, INC. DOES NOT SUPPLY OR SELL
THESE PARTS:
QTY
2
2
4
2
4
4
2
2
4
2
PART NUMBER
Hutch
Severson A80Bl8666
Hutch 07620-00
Hutch 12709-01
Hutch 12710-01
Hutch 12711-01
Hutch 00034-02
Hutch 16150-01
Hutch 837-00
Hutch 11154-00
DESCRIPTION:
Hutch 49" to 67" equalizer.
Urethane equalizer bushing.
Split bushing torque arm bushing.
Step bolt.
Washer.
Plain washer.
Hex lock nut.
1 1/8" X 7", GR5 cap screw.
1 1/8" washer.
1 1/8" - 7 UNC, GR5 hex lock nut.
Note: A Hutch 9600 series suspension has these parts. New parts would only be
needed if existing one were worn.
INSTALLATION:
Note: On two axle trailers, the trailer ride height will be increased by 1-3/8". On three or four
axle trailers, the trailer ride height will be increased 2-5/8" and the front and rear spring
hangers will need to be lowered to match the added height of the center hanger. Be sure to
check the trailer height for adequate bridge or bunker clearance.
Step 1 - PARTS ASSEMBLY:
A new equalizer and bushing should be used when installing the VULCAN Center Hanger
Load Cell Mounting Kit in worn suspensions. Using the 1-1/8" x 7" Grade 5 Cap Screw and
Grade 5 Hex Locking Nut, assemble the hanger, load cell and equalizer as shown in Figure
137-D.
Stress-Tek, Inc. USA,
5920 S. 194th Street, Kent, WA 98032
253-872-1910 FAX: 253-872-9626
Rev. C
Stress-Tek, Inc. Canada, 11-1642 Langan Avenue, Pt. Coquitlam, BC V3C 1K5 604-944-1481 FAX: 604-944-1482
© STRESS-TEK, INC. 2001
B-137
TECHNICAL BULLETIN
1-800-237-0022
Page 5 of 10
Step 2 - HANGER ALIGNMENT:
Use the suspension manufacturer’s installation instructions for hanger spacing and
alignment. Following these instructions will result in the longest service life and provide the
best scale accuracy. VULCAN load cells used in conjunction with the modular center hanger
mounting kit must be installed with the connectors on the inboard side.
CAUTION: Cocked, tilted, or misaligned center hangers may cause inaccurate weight
readings or cause premature bushing failure. DO NOT hammer the center hanger or use
excessive force in an effort to properly position it.
RETROFIT trailer frames must be cleaned, inspected for cracks, rust, and other signs of
damage or deterioration. Proper repairs must be made prior to the installation of the center
hanger load cell. Never assume that the structure is adequate for the new center hanger
mounting kit - INSPECT IT! -- CORRECT IT! Consult frame manufacturer as required.
Figure 137-D
Stress-Tek, Inc. USA,
5920 S. 194th Street, Kent, WA 98032
253-872-1910 FAX: 253-872-9626
Rev. C
Stress-Tek, Inc. Canada, 11-1642 Langan Avenue, Pt. Coquitlam, BC V3C 1K5 604-944-1481 FAX: 604-944-1482
© STRESS-TEK, INC. 2001
B-137
TECHNICAL BULLETIN
1-800-237-0022
Page 6 of 10
Step 3 - WELDING:
All welding and welding procedures must meet the American Welding Society
Specifications. The specification of the welding electrode, as well as proper preparation of
the weld area, is dependent on the composition and thickness of the frame material. If there
is any doubt about which welding process to use, contact the frame manufacturer for
clarification.
After the suspension is aligned, tack the center hanger in place. It is recommended that the
welding process be done in a minimum of four steps as shown in Figure 137-E. VULCAN
load cells are extremely sensitive instruments! They are also easily damaged while being
installed; therefore remove the load cell from the center hanger mounting kit to avoid
damage during welding. Caution! Do not exceed 140 degrees Fahrenheit (60 C) on the
load cell. Arcing on the body of the load cell may seriously damage the load cell’s
structural integrity and the load cell must NOT be installed if this occurs. This also
voids manufacturer’s warranty. A CONTINUOUS WELD MUST BE COMPLETED
AROUND EACH CORNER.
Stress-Tek, Inc. USA,
5920 S. 194th Street, Kent, WA 98032
253-872-1910 FAX: 253-872-9626
Rev. C
Stress-Tek, Inc. Canada, 11-1642 Langan Avenue, Pt. Coquitlam, BC V3C 1K5 604-944-1481 FAX: 604-944-1482
© STRESS-TEK, INC. 2001
B-137
TECHNICAL BULLETIN
1-800-237-0022
Page 7 of 10
Figure 137-E
Connect the brace channel between both center hangers using a weld on tab and two 5/8"
grade 8 cap screws with Grade G Locking Nuts. Reinforcing members can be added, if
necessary, from the brace channel to the trailer frame without affecting the performance of
the load cell. Do not attach any reinforcing to the load cell or the equalizer bracket, as this
would make the load cell non-functional. IF ADDITIONAL REINFORCEMENT IS
INSTALLED, ENSURE THAT CLEARANCE IS AVAILABLE TO INSTALL AND TORQUE
THE EQUALIZER CAP SCREW AND THE ELECTRONIC CONNECTORS.
Stress-Tek, Inc. USA,
5920 S. 194th Street, Kent, WA 98032
253-872-1910 FAX: 253-872-9626
Rev. C
Stress-Tek, Inc. Canada, 11-1642 Langan Avenue, Pt. Coquitlam, BC V3C 1K5 604-944-1481 FAX: 604-944-1482
© STRESS-TEK, INC. 2001
B-137
TECHNICAL BULLETIN
1-800-237-0022
Page 8 of 10
Step 4 - TORQUE SPECIFICATIONS:
Hutch 9600Torque Arm
Grade 5 Step Bolt 1" Diameter
Hutch 9700Torque Arm
Grade 8 Cap Screw 1" Diameter
Hutch 9600 or 9700 Equalizer
Grade 8 Cap Screw 1-1/8" Diameter
350 lb-ft, Oiled, 470 lb-ft, Dry
540 lb-ft, Oiled, 720 lb-ft, Dry
590 lb-ft, Oiled, 790 lb-ft, Dry
Figure 137-F
NOTE: Torque readings should be taken from nut only. Check torque periodically.
Stress-Tek, Inc. USA,
5920 S. 194th Street, Kent, WA 98032
253-872-1910 FAX: 253-872-9626
Rev. C
Stress-Tek, Inc. Canada, 11-1642 Langan Avenue, Pt. Coquitlam, BC V3C 1K5 604-944-1481 FAX: 604-944-1482
© STRESS-TEK, INC. 2001
B-137
TECHNICAL BULLETIN
1-800-237-0022
Page 9 of 10
Step 5 - FINAL INSPECTION:
Make certain that all springs are properly seated on their wear pads. Twisted springs,
springs with insufficient clearance or cocked hangers can cause uneven and excessive wear
and possibly inaccurate scale readings.
Check the equalizers to be sure there is adequate clearance between the ends of the
springs and the equalizer beam hub when the axle is unloaded and loaded.
Double check all fasteners to see that they have been tightened to the proper torque.
Step 6 - WIRING:
Secure Vulcoders to the trailer frame. Route black cables to the load cells so they will not be
damaged by road debris. Route orange cable from Vulcoder to the Meter in the cab of truck
(or NEMA enclosure on trailer). It is suggested that you use a separate cable (or two
dedicated wires in 7-wire cable) between the truck and the trailer.
If a separate cable is used, a 4 pin “Berg” type connector can be used at each end of the
cable. Additional electronic installation notes and system operational procedures can be
found in your “Vulcan Operations and Maintenance Manual” for V200 and V400 systems and
the “Owner’s Manual” for the V500 and V600 systems.
Starting calibration numbers for this system follow:
V200 Electronics - V01 2 lead Vulcoder - Cal Number 4100
V500 and V600 Electronics - V23 2 lead Vulcoder - Cal Number 4100
V500 and V600 Electronics - V24 4 lead Vulcoder - Cal Number 4100
Input the starting “Cal” number and the correct “Tare” weight then start the calibration
process as outlined in the “Vulcan Operations and Maintenance Manual” for V200 systems
and the “Owner’s Manual” for the V500 and V600 systems.
Stress-Tek, Inc. USA,
5920 S. 194th Street, Kent, WA 98032
253-872-1910 FAX: 253-872-9626
Rev. C
Stress-Tek, Inc. Canada, 11-1642 Langan Avenue, Pt. Coquitlam, BC V3C 1K5 604-944-1481 FAX: 604-944-1482
© STRESS-TEK, INC. 2001
B-137
TECHNICAL BULLETIN
1-800-237-0022
Page 10 of 10
Step 7 - MAINTENANCE
Look for mud, ice build-up, or other debris between the load cell and bracket. Refer to
location A shown on Figure 137-F.
Check load cell connectors (refer to location B shown on Figure 137-F) to make sure they
are finger tight plus an additional 1/8 of a turn with channel lock pliers. The additional
tightening is necessary to prevent scale errors, which can occur from moisture entering into
the load cell connector. Do not grease or lubricate inside the Vulcan load cell connector or
VSL Vulcoder connector. These components are highly sensitive to foreign substances and
inaccurate readings will occur if these components are contaminated. Your
manufacturer’s warranty does not cover the failure of Vulcan components due to
contamination (use of grease or other conductive substance) in either the Vulcan
load cell connectors or VSL Vulcoder connectors. If a connector is opened for any
reason, you must clean the load cell connector and cable connector with cotton swabs and
isopropyl alcohol, dry with a hair dryer (DO NOT OVERHEAT), and replace the O-ring
before reconnecting.
Check the torque on load cell cap screws monthly. New trucks must be checked once a
week for 2 weeks. Vulcan On-Board Scales recommended torque values are shown on
Figure 137-F. As a method of monitoring changes in fastener torque, Vulcan On-Board
Scales recommends applying torque stripes to all fasteners. Note: Retightening the
fasteners in the center hanger after the scale system has been used may cause a shift in
tare weight and/or scale operation. Recalibration may be needed.
Vulcan load cells are plated for increased rust protection. Certain minimum maintenance will
be necessary to claim warranty of load cells. Annually, apply a high quality paint to the load
cells, bearing pads, and mounting brackets. For environments where high concentrations of
salts are used on road surfaces, undercoating is recommended (3M, Universal Rubberized
Undercoating, 3M P/N: 8883). Spray undercoating when load cells are connected to
electronics and fully assembled with bearing pads and brackets. See “Vulcan Load Cell
Maintenance” document 44-20006-001 for further details.
Check welds on load cell brackets. IMPORTANT: If a weld repair is required, remove the
load cell. Caution! Do not exceed 140 degrees Fahrenheit (60 C) on the load cell.
Arcing on the body of the load cell voids the manufacturer’s warranty and may
seriously damage the load cell’s structural integrity. The load cell must NOT be
installed if this occurs.
Stress-Tek, Inc. USA,
5920 S. 194th Street, Kent, WA 98032
253-872-1910 FAX: 253-872-9626
Rev. C
Stress-Tek, Inc. Canada, 11-1642 Langan Avenue, Pt. Coquitlam, BC V3C 1K5 604-944-1481 FAX: 604-944-1482
© STRESS-TEK, INC. 2001
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertisement