Warren FW-30 User manual

Warren Elevating 5th Wheels
Operation and Maintenance Manual
FW-30, FW-45, & FW-25HL6

Warren Elevating 5th Wheel
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TABLE OF CONTENTS
Safety Notice................................................................................................................... 4
Preface................................................................................................................................. 4
Please Note Cautions ...................................................................................................... 5
Determine Tractor Compatibility.................................................................................... 5
General Information........................................................................................................ 6
Pre-Installation Instructions................................................................................................ 7
Check Tractor C.A.......................................................................................................... 7
Check for Power Take Off Capability and Location ...................................................... 7
Check 5th Wheel Capacity............................................................................................... 8
Check Parts and Assemblies........................................................................................... 8
Operating Controls.......................................................................................................... 8
Check Parts and Materials Obtained Locally.................................................................. 8
Check Tools and Supplies Required............................................................................... 9
Installation Introduction.................................................................................................... 10
Two Methods Available................................................................................................ 10
Method 1................................................................................................................... 10
Method 2................................................................................................................... 12
Introduction to Operating Controls................................................................................... 12
Power Take-Off ................................................................................................................ 12
Power Take Off Installation.......................................................................................... 12
Installation......................................................................................................................... 14
Air Control System....................................................................................................... 14
Installation of the 5th Wheel on Tractor............................................................................ 15
Prepare Tractor Frame .................................................................................................. 15
Prepare for Bolt-On installation.................................................................................... 15
Position 5th Wheel Assembly for FW-30 & FW-45 (see Figures 4a and 5a) .............. 15
Position 5th Wheel Assembly for FW-25HL6 (see Figure 4b) .................................... 17
All Models —Mark Interfering Cross Members ......................................................... 18
Check for Actual Contact.............................................................................................. 19
To Mark a cross Member for Alteration....................................................................... 20
Make Tractor Frame Alterations................................................................................... 20
Alter Cross members................................................................................................. 20
Installing Steel Angles.................................................................................................. 21
When To Use One Angle Per Side (Fig. 1) .............................................................. 21
When To Use Two Angles Per Side (Fig. 2)............................................................ 22
How to Install Steel Angles ...................................................................................... 22
If One Angle Per Side (Fig. 1).................................................................................. 23
If Two Angles Per Side (Fig. 2)................................................................................ 23
Drill Bolt Holes......................................................................................................... 23
Mounting 5th Wheel Assembly on Tractor .............................................................. 24
On Installations Using Two Steel Angles Per Side .................................................. 26
On Installations Using One Angle Per Side.............................................................. 26
Lower 5th Wheel Plate to Collapsed (Down) Position................................................. 26
Install Pickup Ramps .................................................................................................... 27
Prepare Tractor Frame .............................................................................................. 27

Warren Elevating 5th Wheel
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Install Ramps ............................................................................................................ 28
Severe Duty Applications......................................................................................... 28
Connect Hydraulic Hoses, Pump.................................................................................. 28
Prepare Tractor For Service.............................................................................................. 29
Fill Tank and Cylinder(s).............................................................................................. 29
Final Installation Steps.................................................................................................. 30
Check Out Installation .................................................................................................. 30
Check Out Performance................................................................................................ 30
Coupling and Locking................................................................................................... 31
Operator Instructions ................................................................................................ 31
Final Locking Test.................................................................................................... 34
Check Raising and Lowering.................................................................................... 34
Final Systems Test.................................................................................................... 34
Maintenance.............................................................................................................. 34
Lubrication Maintenance .......................................................................................... 34
Hydraulic Maintenance............................................................................................. 34
Mechanical Maintenance.......................................................................................... 35
Service Conditions and Problems..................................................................................... 35
Repairs .......................................................................................................................... 36
If the locking jaws need repair.................................................................................. 36
Replacement of other components............................................................................ 36
Correct Locking Procedure....................................................................................... 36
WARREN Locking Assembly Repair and Adjustment Instructions................................ 37
Tools Required For Repair........................................................................................ 37
Locking Assembly Inspection................................................................................... 38
Locking Assembly Repair......................................................................................... 38
Final Locking Test.................................................................................................... 40
Warranty ........................................................................................................................... 41

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CAUTION: Before operating or before performing any service or maintenance on this
Warren Product, all appropriate OSHA regulations must be observed.
Safety Notice
Proper service and repair are important to the safe, reliable, operation of Warren’s
products. Operation and servicing procedure recommended by Warren are in this manual
and are effective for proper use of this product. Some of these operations may require the
use of tools or blocking devices specifically designed for the purpose. Special tools
should be used when and as recommended. It is important to note that warnings against
the use of specific operations or methods that can damage the product or render it unsafe
are stated in this manual. It is also important to understand these warnings are not
exhaustive. Warren could not possibly know, evaluate, and advise the service trade of all
conceivable ways in which operation or service might be done or of the possible
hazardous consequences of each way. Accordingly, anyone who uses operational
procedure, service procedures, or tools whether recommended by Warren or not, must
first satisfy himself thoroughly that neither his safety nor the product safety will be
compromised or jeopardized by the selected procedure.
Preface
This Operation and Maintenance Manual is to assist in the correct operation and
maintenance of the Warren Elevating 5th wheels by providing information for installation,
operation, service, and maintenance. Please read this manual thoroughly before
proceeding to use the equipment.
The economic life of any piece of equipment is directly related to the care and
maintenance it receives. Use this manual as a reference in seeing that this unit receives
proper care and is correctly operated.
The use of genuine Warren parts is recommended for best equipment service as well as
insuring that our warranty policy is not voided.
If additional information is required or should you desire to have a qualified service
facility work on this unit, contact your local Warren Distributor.
Name __________________________________________
Address ________________________________________
_______________________________________________
Phone __________________________________________
Fax ____________________________________________
Warren reserves the right to make changes in our units at anytime without incurring any
obligation whatsoever to change units already in the field.

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Please Note Cautions
Special attention should be paid to all the caution notes and directions to help make your
installation as safe and efficient as possible.
Determine Tractor Compatibility
Many tractors are compatible with Warren Elevating 5th Wheels; however, your tractor
may have different design and dimensional characteristics that affect its compatibility or
installation procedures. If you have problems or questions applying the installation
procedures to your tractor, please contact your local Warren Distributor before attempting
to install the unit on the tractor.

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General Information
1. All Warren 5th wheels come with an air shift direct drive pump. Ensure your PTO,
transmission, and pump are compatible. The Warren supplied pump is counter
clockwise (CCW) rotating.
2. Install PTO. Run engine to check PTO installation.
3. Install hydraulic pump.
4. Install controls in cab for pump and PTO.
5. Prepare tractor frame and install steel angles on tractor frame.
6. Fit and install 5th wheel on tractor (attach 5th wheel frame to steel angles installed
in Step 5).
7. Make pick up ramps.
8. Connect air and hydraulic lines to 5th wheel.
9. Put oil in cylinder(s) and tank.
10. Inspect and test unit under loaded trailer.
11. If you decide to repaint 5th wheel and/or pick up ramps, ensure warning labels and
operating decals are clearly visible.
12. Follow maintenance and service instructions.
5th Wheel Frame
Top Plate
Cylinder
King Pin Jaws
King Pin Jaw Air
Camber
King Pin Jaw
Locking Cylinder
Rear Elevator
Front Elevator
Front Cross Shaft
Rear Cross Shaft
Roller Shaft and
Wheels
Elevator Shafts
Pick-up Ramps

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Pre-Installation Instructions
Important: Before starting the installation carefully complete all the pre-installation installation
steps.
Check Tractor C.A.
Refer to the Table 1 to ensure you will be operating the elevating 5th wheel within its operating
parameters.
C.A. refers to the distance from the last above-frame obstruction (i.e. transmission mount,
muffler, etc.) behind tractor cab to center of single or tandem axles. This area must be kept clear
for mounting the 5th wheel assembly. If there is no above frame obstruction, the CA. is the
distance from the back of the cab to the center of the single or tandem axles.
Make sure the tractor you are planning to use has the proper C.A. and gross weight capacity to
match the lifting 5th wheel model you have received.
Table 1: 5th Wheel C.A.1Requirements and Gross Weight2Capacity
5th Wheel
Model
Minimum Recommended Tractor
C.A. Dimension Trailer King Pin
Setting3Ins., (mm.)
36(914) 42(1067)
Gross Weight
Capacity
Lbs. (Kg.)2
FW-30
72 inch (1829 mm ) 78 inch (1982 mm)
60,000 (27,218)
FW-45
72 inch (1829 mm ) 78 inch (1982 mm)
90,000 (40,909)
FW-25HL6
84 inch (2134 mm ) 90 inch (2286 mm)
50,000 (22680)
Footnotes
1. CA. refers to the distance tram last above-frame obstruction (i.e. transmission mount,
muffler, etc.) behind tractor cab to center of single or tandem axles. Most trailers have a 36
in. or 42 in. king pin setting. Add dimension for refrigeration unit.
2. Gross Weight Capacity refers to total weight —trailer and contents.
3. Trailer King Pin Setting. This is the distance from trailer king pin to trailer front (including
refrigeration unit). This and tractor C.A. determines whether there is adequate clearance from
the back of the cab to the front of the trailer. As with any 5th wheel, adequate space is
necessary for clearing trailer corners when turning.
Most standard trailers have 36 or 42 inch king pin setting. Your trailers may differ. Be sure to
add extra clearance for refrigeration unit or other equipment which may extend beyond trailer
front.
Check for Power Take Off Capability and Location
The installation of a Warren 5th wheel requires the addition of a PTO to the tractor.
Check the tractor transmission to see which opening you will use for the PTO. Most
transmissions have two PTO openings. Order the PTO based on which opening has easier access.
Check to make sure that your tractor has a PTO drive gear installed. Some Mack©transmissions
do not have a PTO drive gear installed. It can be installed by a truck transmission shop or Mack©

Warren Elevating 5th Wheel
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dealer. Allison transmissions require special PTO’s. Consult Warren or your PTO supplier for
information on these PTO’s.
All Warren 5th Wheels are equipped with air shift direct mount pumps with counter clockwise
(CCW) rotation unless otherwise specified. If this is not compatible with the truck, contact your
Warren dealer to see if Warren can accommodate your truck’s requirements. Ensure the pump
(CCW) and PTO rotation and connection are compatible.
You can order your 5th wheel without a pump and use your own. There are several ways that your
pump may be connected. Please contact Warren or your distributor if you have questions about
the correct way to hook up a non-standard pump. In all cases, you should use a 10 micron filter in
the system.
Check 5th Wheel Capacity (Refer to Table 1.)
Make sure the 5th wheel you have received is the proper model, and that it has the proper gross
weight capacity for you application. Gross weight refers to total lifting weight —including trailer
and contents.
Check Parts and Assemblies
Though we take great effort to ensure your order is packed carefully, ensure all required parts and
assemblies have been included in the shipment. Refer to the packing list enclosed with the
shipment.
Operating Controls
Unless special ordered, all Warren 5th wheels have full air controls. We have determined this
provides the most reliable and trouble-free operation. If you have special ordered other controls
or have special requirements, please contact your Warren dealer for special instructions.
Check Parts and Materials Obtained Locally
You will need the following items which are not included with your 5th wheel shipment.
1. Power Take Off: See information above. Warren recommends a single speed, dual gear
heavy duty, direct mount, air shift PTO. On direct mount pumps, be sure that the PTO
and pump rotations will work together properly. The Warren supplied pump is counter
clockwise (CCW) rotating.
2. PTO ratios. Single cylinder 5th wheel models (FW-30): 80-90 % of engine speed. Twin
cylinder models (FW-45): 90- 110 % of engine speed.
3. Flat stock steel and steel angles, for pick-up ramps, brackets, reinforcing plates and other
requirements. You will need about 175 inches of steel angle for a bolt-on installation. The
steel angles should be either 3/8 by 3 1/2 by 4 inches, or 1/4 by 3 1/2 by 4 inches.
4. Hydraulic oil. Oil should meet or exceed the following criteria.
Type
Mineral Oil, Paraffin Base, Solvent
Extracted
Viscosity index @ 100ºF
90 or higher
Viscosity SUS @ 100ºF
150-300 (32-65 CST)

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Aniline Point
165 min.
Anti-foam additives
Yes
Anti-oxidant additives
Yes
Note: This oil is recommended for normal climatic conditions within the continental United
States. Where sustained temperatures are 0 degrees F. and lower or in excess of 90+ degrees F.,
this oil should be removed and replaced with one of a viscosity rating suitable to the ambient
temperature of your region. For a suitable replacement, consult your local oil distributor or dealer.
CAUTION: NEVER USE A DETERGENT OIL OR USED OIL IN THE HYDRAULIC
SYSTEM.
Check Tools and Supplies Required
Make sure you have the following tools on hand for installation.
•Overhead hoist 2-ton min., and
chain with hooks.
•Two steel saw horses
•Acetylene torch
•Heavy duty arc welder 300 amp.
Min.
•Welding rods or wire
•Power drill with various bits
•Power hand grinder
•Sledge hammer
•Pipe wrenches
•Open-end wrenches (U.S. sizes)
•Various Allen wrenches.
•Six large C clamps - 8 to 10 in. min.
•Center punch
•Chalk
•Tape measure
•Straight edge
•Grease gun with suitable grease
•Selection of fasteners including
Grade 8 bolts, 5/8 in. lock nuts and
washers
•Black paint

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CAUTION: Safety Precautions
Before you begin any step in installation, be sure you understand the following notes
carefully.
Keep hands and any other part of the body away from the elevating sections when the
unit is in raised position.
After elevating the 5th wheel plate to raised position, always leave the hoist in supporting
(hold) position.
Whenever the 5th wheel plate is in elevated or raised position, it must be securely
propped or blocked so it cannot fall on anyone while making repairs or adjustments. Do
not depend on the hoist alone. Blocking recommendation: Use a C clamp in front of each
roller. Refer to Fig. 9.
On all tractors, you must disconnect all battery cables and tape the cable ends before
doing any welding on the tractor or fifth wheel. On gasoline powered tractors, you must
also remove fuel tanks, drain fuel lines and plug fuel lines before doing any welding,
grinding or burning on or near the tractor.
Installation Introduction
Two Methods Available
Note for FW-25HL6
Method 1 is the only method for FW-25HL6!
Method 1
Lay the angle with the long leg (4”) on the top of the frame, and the short leg (3 1/2’) down the
side of the frame. This steel angle will increase the down height of the 5th wheel by its thickness.
The 5th wheel will be installed on the tractor frame using steel angles. The angles will be bolted

Warren Elevating 5th Wheel
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to the tractor, and then the 5th wheel frame will be welded to steel angles. This is the easiest
installation.
Figure 1 Installation method 1 using 1 piece of angle steel
Figure 2 Installation method 2 using two pieces of angle steel
5th Wheel Frame
Tractor Frame
5/8 Inch SAE Grade 8 Bolts
Steel Angle
(short leg)
Steel Angle
(long leg)
Steel Angle
(long leg)
Steel Angle
(short leg)
Side Plate
Weld
5th Wheel Frame
Steel Angle (long leg)
Tractor Frame
5/8 Inch SAE Grade 8 Bolts
Steel Angle
(short leg)

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Method 2
If the lowest down height is required, use two steel angles on each side. Position the 5th wheel
frame directly on top of the tractor frame. Bolt one, angle against the side of the tractor frame
with the short leg down, and the long leg facing outward. Position the second angle on-top of the
first angle with the long leg up, and the short leg facing outward. Weld the second angle to the
5th wheel frame. Bolt the two angles together in several places, and then weld the two angles
together.
Introduction to Operating Controls
As a standard, your 5th wheel has been provided with an air shifting hydraulic pump. The control
valve, air lines, and fittings are also included. Also standard is an air control valve. This push
button will prevent the driver from running the PTO while driving, and therefore, result in longer
pump and PTO life.
King Ping Jaw Release
Included with all 5th wheel models is an air valve for the king pin jaw release. Instructions for
installing this valve will be found as part of the installation procedure later in this manual.
Image 1 Console
Power Take-Off
Power Take Off Installation
Install and adjust PTO according to the manufacturer’s instructions.
Jaw Control
Pump Valve
PTO Valve

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NOTE: The Warren supplied pump is counter clockwise rotating (CCW).
NOTE: PTO shaft rotation direction on direct mount type pumps. Opposite engine rotation PTO’s
require counter clockwise pumps. Engine rotation PTO’s require clockwise pumps. If in doubt,
consult your PTO supplier.
NOTE: For direct mount pumps, fabricate a support is included. We recommend this to hold the
pump in the proper position. This will help eliminate vibration and strain on the pump, PTO, and
transmission

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Installation
Air Control System
Figure 3 Pneumatic control diagram
Notes and Cautions
The use of a pressure protection value will prevent the tractor’s air reservoir from
bleeding should an air line break. Therefore, it is very important to have this installed on
or close to the air tank.
If you are supplying your own air shift pump, you MUST install a restrictor valve to limit
5th wheel decent speed. Allowing the 5th wheel to lower too quickly can cause damage to
the contents of the trailer and can cause damage to the 5th wheel assembly. There is a
restrictor valve included with each Warren air shift pump. DO NOT REMOVE THIS
VAVLE.
Figure 4 Restrictor valve Do not remove!
Pressure Port of
Pump

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Installation of the 5th Wheel on Tractor
CAUTION: Before welding, grinding or burning on any GASOLINE-POWERED
tractor, remove all fuel tanks, then drain and plug all fuel lines.
CAUTION: On ALL tractors, disconnect battery cables and tape cable ends to prevent
damage from welding.
Prepare Tractor Frame
Be sure the top surfaces of the tractor frame are clean and rust-free.
Mark the tractor frame directly above the center of the single axles, or above the center of the
tandem axles. Use a center punch to make a mark at D, (Figure 4).
Prepare for Bolt-On installation
As mentioned in the “Installation Introduction” section, you will be bolting steel angles to the
tractor frame and then welding the 5th wheel frame to the steel angles.
The length of the steel angles should extend from about 3 inches in front of the 5th wheel frame
to the very rear of the tractor frame rails. Before installing the steel angles, temporarily place the
5th wheel assembly on the tractor frame to make measurement marks on the tractor frame.
Position 5th Wheel Assembly for FW-30 & FW-45 (see Figures 4a and 5a)
Using an overhead hoist and a suitable safety chain, lift the entire 5th wheel assembly and lower it
carefully onto the tractor frame. Position the assembly so the center of the king pin jaws is ahead
of the axle(s) center according to the dimensions indicated for your model on Table 2a.
Proper positioning of the 5th wheel assembly on the tractor frame is important because the 5th
wheel plate moves back (away from cab) when rising; the 5TH WHEEL JAWS, IN A FULLY
RAISED POSITION, (Figure 5a) MUST NEVER BE BEHIND THE CENTER OF THE
AXLE(S).
It is important that when fully raised, the center of the 5th wheel jaws must never be behind the
center of the axles. You must remember that the 5th wheel, when down (Figure 4a); will be at
least 6 inches forward of the raised position. You must provide clearance at the back of the tractor
cab for the trailer when it is pulling a trailer having a long king pin setting.
If the 5th wheel frame does not fit completely flush on the tractor frame, do not be concerned. You
will fix this in a later step.

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When you are sure the king pin jaws are positioned the correct distance ahead of your axle(s)
center, make chalk marks on the tractor frame at the following locations:
(NOTE: Make the marks across the top flange for the tractor frame, down the outside, across the
bottom flange, and up the inside of the tractor frame.)
Then, measure from the forward mark A to the very rear of the tractor frame. This is the length of
the steel angle(s) you will need on each side.
Table 2a.
Minimum forward position of 5th wheel Jaws center (D) In relation to axle(s) center (F) when
unit is down position.
5th Wheel Model
Model (Down
Position)
Position of Jaws (C) in Relation to Center of axle(s) center
(D). ins., (mm)
FW-30 & FW-45
C to D, Ahead
6(152)
Figure 4a. FW-30 & FW-45 5th wheel in down position
A. 3 inches
ahead of 5th
wheel frame
B. Front of
5th wheel
frame
C. King Pin
Jaws center
in down
position
D. Axle
Center
E. Rear of 5th
wheel frame

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Figure 5a. FW-30 & FW-45 5th wheel in up position
Position 5th Wheel Assembly for FW-25HL6 (see Figure 4b)
Using an overhead hoist and a suitable safety chain, lift the entire 5th wheel assembly and lower it
carefully onto the tractor frame. Position the assembly so the center of the king pin jaws is in line
with axle(s) center according to the dimensions indicated for your model on Table 2b.
Proper positioning of the 5th wheel assembly on the tractor frame is important because the 5th
wheel plate moves forward (toward the cab) when rising.
You must provide clearance at the back of the tractor cab for the trailer when it is pulling a trailer
having a long king pin setting. If the 5th wheel frame does not fit completely flush on the tractor
frame, do not be concerned. You will fix this in a later step. When you are sure the king pin jaws
are positioned in line with your axle(s) center, make chalk marks on the tractor frame at the
following locations:
(NOTE: Make the marks across the top flange for the tractor frame, down the outside, across the
bottom flange, and up the inside of the tractor frame.)
Then, measure from the forward mark A to the very rear of the tractor frame. This is the length of
the steel angle(s) you will need on each side.
A. 3 inches
ahead of 5th
wheel frame
B. Front of
5th wheel
frame
C. King Pin
Jaws center
D. Axle
Center
E. Rear of
5th wheel
frame
CAUTION: King Pin Jaw Center (C) must be
ahead of the axle in the up position.

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Table 2b.
Minimum forward position of 5th wheel Jaws center (D) In relation to axle(s) center (F) when
unit is down position.
5th Wheel Model
Model (Down
Position)
Position of Jaws (C) in Relation to Center of axle(s) center
(D). ins., (mm)
FW-25HL6
C and D aligned
0
Figure 4b. FW-25HL6 5th wheel in down position
All Models —Mark Interfering Cross Members
Here, you will be checking for proper clearance between cylinder(s) and cross members. You will
be marking cross members for any necessary alterations.
A. 3 inches
ahead of 5th
wheel frame
B. Front of
5th wheel
frame
C. King Pin
Jaws center
in down
position
D. Axle
Center
E. Rear of 5th
wheel frame

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Figure 6 Cross member and cylinder clearance.
There must be at least 1/4 Inch clearance between any cylinder and cross member when the unit
is in down position.
NOTE: On all models, cylinders come closest to cross members when the unit is in down
position. Actual contact, or less than 1/4 inch clearance will require alteration of the cross
member.
On any tractor with an air suspension, BE SURE to drain all air from the air suspension before
making these marks. BE SURE that all air is out of the air bags during the entire measuring
procedure. If the air bags refill during measuring, your measurements will be wrong. If you do
not measure and check the cross members properly, the cylinder may hit the cross members or
other parts later.
Check for Actual Contact
When the 5th wheel is in the exact position where you want to install it, check for interference
from any cross members or other components. Remember that the suspension (whether spring or
air type) will move as the tractor is driven over rough surfaces. You must have adequate
clearance between the lifting fifth wheel and all tractor components. You should also keep in
mind that hydraulic hoses and fittings will be installed on each end of the hydraulic cylinder(s).
While checking for clearance, drain all air from air suspension components. Be sure that air is
drained during the entire checking procedure.
NOTE: If the 5th wheel frame fits flush on the tractor frame rails. Check any gap between the two
frames may be caused by a cylinder resting on a cross member. Check each cross member
Tractor Frame
Tractor Cross Member
5th Wheel Frame
Cylinder
Need min. ¼ inch
clearance.
Reinforce tractor
cross member if
cut.
A
B
C

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carefully. If there is not at least a 1/4 clearance between the 5th wheel cylinder(s) and any cross
member, some modification must be done to the cross member. If you find interference on a cross
member, you can remove a crescent shaped section from a cross member, then reinforce this cut
section.
To Mark a cross Member for Alteration
Measure the gap between the tractor frame and the 5th wheel frame. That dimension plus 1/4 inch
should be removed from the cross member where it touches the cylinder. Make a mark on the top
edge of the cross member (A) exactly where it touches the cylinder. Straight down below the first
mark, make second mark (B) on the side of the member. The distance from the first mark to the
second mark should be equal to the gap between frames PLUS 1/4 inch.
EXAMPLE: if the gap between the frames is 1 inch, add another 1/4 inch, making the second
mark 1 1/4 inch below the first. Now, using the first mark (at top edge) as a center, draw an arc
(C) running from each side of the second mark to the top of the cross member. This crescent-
shaped section will be removed in later steps.
Check for clearance (regardless of actual contact). If you do not find a gap between frames, check
the space between cylinder and cross member. If space is not at least 1/4 inch, the cross member
will require alteration as described above. However, in this case, the crescent-shaped section to be
removed must be at east 1/4 inch deep.
After marking for cross member alteration, remove 5th wheel assembly from tractor.
Make Tractor Frame Alterations
Alter Cross members
If a cross member requires alteration to clear hydraulic cylinder(s), proceed as follows:
CAUTION: Be sure air or electrical supply lines or other components are out of the way
and protected before proceeding.
If your tractor has a gasoline engine, remove fuel tanks and plug fuel lines before doing any
welding, burning or grinding. On any tractor, disconnect battery cables and wrap cable ends to
insulate.
Using a torch, cut out crescent-shaped section (A) as previously marked.
The, reinforce the cut-out area by welding a strip properly shaped (B) to fit.