Keith LeakProof III User manual

LeakProof III
KEITH Manufacturing Co.
www.KeithWalkingFloor.com
World Headquarters
Toll-Free: 800-547-6161
Phone: [phone]
OWNER / OPERATOR MANUAL
Released: 2023-04-17 DOC06436 Rev B
©2023 KEITH Manufacturing Co. All Rights Reserved. KEITH, KEITH logo and WALKING FLOOR are registered trademarks of KEITH
Manufacturing Co. Equipment manufactured by KEITH Manufacturing Co. is protected by numerous patents both domestic and foreign.
Original Instructions

OWNER / OPERATOR MANUAL LeakProof III
i DOC06436 Rev B
Table of Contents
Introduction ii
KEITH®Standard Drive WALKING FLOOR®Unloading System Limited Warranty iii
Warranty Registration Card v
1.0 Safety 1
2.0 Specications 2
2.1 General Wet Kit Specications 2
2.2 Floor to Wet Kit Diagram 3
2.3 Floor Speed vs Pump Flow Rate 4
3.0 Operation 5
3.1 Oil Flow Diagram 5
3.2 Start-Up 6
3.3 Standard Operating Procedures 6
4.0 Maintenance 8
4.1 Life Extending Practices 8
4.2 Bolt Torque Requirements 8
5.0 Troubleshooting 9
5.1 Switching Valve 9
5.2 Check Valve 9
5.3 Check Valve Replacement 11
5.4 Technical Support 12
6.0 Contact Information - KEITH Manufacturing Co. 12

OWNER / OPERATOR MANUAL LeakProof III
ii DOC06436 Rev B
Introduction
We at KEITH Manufacturing Co. are very happy you have decided to equip your trailer with the KEITH®
WALKING FLOOR®system. We take great pride in manufacturing the simplest, lowest maintenance self-
unloading system available. Installing the KEITH®WALKING FLOOR®system in your trailer provides you
with the versatility to load or unload virtually any type of material.
The following pages contain information on the operation of your KEITH®WALKING FLOOR®system.
Further support and safety documents (manuals, brochures, and product specs) can be viewed or
downloaded from our website at www.KeithWalkingFloor.com.
In addition, we have provided general information on the type of hydraulic wet kit that will be needed to
operate your system. Please contact a KEITH sales representative or visit our website for more specic
recommendations regarding pumps, lters, pressure relief valves and approved equivalent equipment.
It is critical to adhere to the outlined hydraulic wet kit specications. Failure to follow the guidelines
concerning required operation pressures can lead to system failure due to excessive heat buildup.
Please review the entire manual before operating the KEITH®WALKING FLOOR®system. If you have
any questions, please call 541-475-3802 or email [e-mail] where our support team
will happily assist you.
Thank you again for putting your trust in our company!
Sincerely,
R. Mark Foster
President
DOC06344 Rev A

OWNER / OPERATOR MANUAL LeakProof III
iii DOC06436 Rev B
KEITH®Standard Drive WALKING FLOOR®Unloading System Limited Warranty
1 Year Limited Warranty
KEITH Manufacturing Co. hereby warrants, to the rst owner of a new KEITH®Standard Drive Unloading
System from the factory or selling distributor, that the product shall be free from defects in material and
workmanship for a period of one year after delivery or sale to the rst registered owner. This warranty does
not cover normal wear and tear and maintenance. A warranty card must be lled out and returned to KEITH
Manufacturing Co. to activate this warranty.
Unloading system must only be used as recommended by KEITH Manufacturing Co. for normal use and
service. This means the loading and/or unloading of uniformly distributed, non-corrosive material, properly
restrained and secured, on properly maintained public roads, with gross vehicle weights not in excess of factory
rated capacity. For stationary installations, normal use and service means the conveying of uniformly distributed,
noncorrosive materials, with weights not in excess of factory rated capacity. The system must be installed
according to KEITH Manufacturing Co. installation instructions. Preventative maintenance must be performed
at regular intervals as specied in KEITH Manufacturing Co. manuals. See below for circumstances that
void the KEITH limited warranty.
Sole and Exclusive Remedy: If the product covered hereby fails to conform to the above stated warranty,
KEITH Manufacturing Co.’s sole liability under this warranty and the owner’s sole and exclusive remedy is
limited to repair or replacement of the defective part(s) at a facility authorized by KEITH Manufacturing Co.
THE WARRANTY SET FORTH ABOVE IS EXPRESSLY MADE IN LIEU OFANY OTHER WARRANTIES,
EXPRESS, IMPLIED, OR STATUTORY. KEITH MANUFACTURING CO. MAKES NO WARRANTIES OF
FITNESS FOR A PARTICULAR PURPOSE OR WARRANTIES OF MERCHANTABILITY. FURTHER,
KEITH MANUFACTURING CO. WILL NOT BE LIABLE FOR INCIDENTAL OR CONSEQUENTIAL
DAMAGES SUCH AS, BUT NOT LIMITED TO, THE LOSS OF USE OF THE PRODUCT, DAMAGE TO
THE PRODUCT, ATTORNEY’S FEES AND THE LIABILITY IN RESPECT TO ANY OTHER REASON.
TORT DISCLAIMER: KEITH MANUFACTURING CO. EXCLUDES ANY LIABILITY IN TORT WITH
RESPECT TO THEIR PRODUCTS, INCLUDING ANY LIABILITY BASED ON STRICT LIABILITY IN
TORT AND NEGLIGENCE.
If This Warranty Violates Law: To the extent any provision of this warranty, contravenes the law of any
jurisdiction, that provision shall be inapplicable in such jurisdiction and the remainder of the warranty shall not
be a󰀨ected thereby.
Warranty Return Policy
Any defective part(s) must be shipped freight prepaid to the nearest KEITH facility. Please contact KEITH
for additional information on proper locations. Before returning any item for repair or replacement, contact
KEITH Manufacturing Co. at 1-800-547-6161 or [e-mail] for a “Returned Goods
Authorization” (RGA) number. Make sure the RGA number is on the outside of the shipping carton and all
paperwork is included.
The following information is needed:
a. Company name e. Part number
b. Contact name f. Quantity
c. Address g. Reason for return
d. Phone number h. Customer’s account number

OWNER / OPERATOR MANUAL LeakProof III
iv DOC06436 Rev B
The following circumstances void the KEITH Limited Warranty:
• Unloading system is not installed properly.
• Wet kit is not as recommended by KEITH or using an end dump or dump truck wet kit.
• Malfunction or problems caused by equipment which was not supplied by KEITH.
• Malfunction caused by improper repair work or repair work which is carried out by third parties.
• Malfunction caused using contaminated oil or oil of the wrong type.
• Malfunction caused by excessive heat over 140 °F [60 °C] due to a bad hydraulic pump on the truck
or hydraulic wet kit or improper operation of the unloading system, for example, not fully opening and
closing the ball valve.
• Defects in electrical components caused by incorrect connection and/or incorrect voltage levels.
• Preventative maintenance is not performed at regular intervals as specied in KEITH manuals.
• Malfunction caused by corrosive materials.
• Malfunction caused by overloading or improper use as stated in KEITH manuals.
Examples of wear items which are not covered by KEITH Limited Warranty:
• Floor seals
• Floor bearings
• Floor slats
• End plugs in slats
• Filter elements and components
Revised March 2022 DOC06367 Rev. B

OWNER / OPERATOR MANUAL LeakProof III
v DOC06436 Rev B
Warranty Registration Card
Note: To validate the warranty, the registration information must be lled out completely and returned to KEITH
within ten (10) days of purchase and/or installation.
Please ll out the Warranty Registration form on our website at www.KeithWalkingFloor.com or ll out the
Warranty Registration Card below and mail or email it to:
KEITH Manufacturing Co.
P.O. Box 1
Madras, OR 97741-0001
[e-mail]
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
This warranty registration card must be completed and on le at KEITH in order for the warranty period to
begin on the purchase date. If no purchase date is registered, the beginning of the warranty will automatically
revert to the manufacture date.
Name / Company Name: _______________________________________________________________
Address: ____________________________________________________________________________
City, State / Prov.: ___________________________________________ Postal Code: ______________
Country:____________________________________________________________________________
Phone: _____________________________________________________________________________
E-Mail: _____________________________________________________________________________
SYSTEM DATA:
Date of Purchase: ____________________________________________________________________
Model / Serial Number: ________________________________________________________________
Purchased From: ____________________________________________________________________
Type of Material Loaded/Unloaded: ______________________________________________________
I have fully read the KEITH Manufacturing Co. warranty information and fully understand and agree to the
terms of the warranty.
Name: ___________________________ Date: __________ Signature: __________________________

OWNER / OPERATOR MANUAL LeakProof III
1 DOC06436 Rev B
1.0 Safety
WARNING: The large forces exerted by the oor when moving can result in damage to
equipment which may result in serious injury or death. Always ensure that this manual has been
read and fully understood by the operator. We advise that the operator keeps this manual with
the vehicle at all times. Always ensure that ‘best practice’ is employed when using our systems.
If in any doubt do NOT use this equipment and seek further assistance from your company’s
safety o󰀩cer.
!!CAUTION!!
To Prevent Possible Injury or Death
1. DO NOT Operate the oor with the doors closed.
2. DO NOT Stand behind the trailer or in the discharge area.
3. DO NOT Make adjustments to the unloading mechanism with the oor operating.
4. DO NOT Operate the unloader when protective covers and screens are not in place.
5. DO NOT Go underneath the trailer.
6. DO NOT Leave the trailer unattended while the unloader is in operation.
ALWAYS:
1. Disconnect the trailer from the hydraulic power unit (P.T.O.) before service and maintenance.
2. Shut o󰀨 the power supply before going underneath the trailer.
3. Stay away from any oil leaks when hydraulic pressure is high.
4. Shut o󰀨 the hydraulic power take o󰀨 unit (P.T.O.) before moving the trailer.
!!Keep your hands, body parts and loose clothing away from the oor slats
and drive mechanism when the unloading system is in operation!!

OWNER / OPERATOR MANUAL LeakProof III
2 DOC06436 Rev B
2.0 Specications
2.1 General Wet Kit Specications
Transmission:
This wet kit is designed for a Fuller 13 or 15 speed transmission. All of the following
information applies to this transmission. (P.T.O. specications may vary with other
transmissions. Please check with KEITH® Manufacturing Co. for specications)
Oil: Chevron AW46 hydraulic oil or equivalent.
P.T.O.: Chelsea series 442/489 bottom mount (6 or 8 bolt) 118% Power Take O󰀨 (electric
over speed is highly recommended), or Muncie P.C. 65 with electric over speed.
Pump: Commercial P-51 A297BE (Spl.) 25-25 (2” four bolt suction) with Anchor
W43-32-32 ange.
Filter:
Filter should be 10 micron on the return line.
Filter should be a double element Zinga (or equivalent.) Filter head #DF-15-25.
MF 2215-25-0-2-0
Filter element #LE-10 or LE-30.
(The lter element should be changed after 6 hours initially, and then every 6
months thereafter. This may vary with the operating environment.)
Hydraulic
Reservoir:
Should hold approximately 1 gallon of oil for every liter per minute you plan to
pump, i.e. 40 GPM = 40 gallon reservoir. Reservoir should hold a minimum of 40
gallons of oil.
Suction Line:
Suction line from the tank to the steel tubing should be no more than 1 meter in
length and a minimum of 2” inside diameter.
Example: SAE-100R4. (This type of line has a spiral wire to keep the hose from
collapsing under suction.)
Pressure Line: Hose from truck to trailer should be 3/4” 16 SAE-100R2.
Return Line: Hose from trailer to lter should be 3/4” 16 SAE-100R1.
Hose from lter to tank should be 1-1/4” 20 SAE-100R1.
*Pressure Relief
Valve: Example: Cross #RD12D
*Note: It is critical that this relief valve is set at no less than 2800 PSI and no more than 3000 PSI.

OWNER / OPERATOR MANUAL LeakProof III
3 DOC06436 Rev B
2.2 Floor to Wet Kit Diagram
NOTE: Refer to Parts Catalog for additional information on ttings.
To have proper operation of your KEITH®WALKING FLOOR Unloader, the following check list and diagram
must be followed. This is critical or your warranty may be voided.
TRACTOR: 1) Male quick coupler to be on the return line
(Line through lter to tank).
2) Female quick coupler to be on pressure line
(Line from pump).
TRAILER: 1) Female quick coupler to be on return line
(Line from switching valve port stamped “RES”)
2) Male quick coupler to be on pressure line
(Line to switching valve port stamped “PUMP”).
If you have any questions of problems, call KEITH Manufacturing Co. [phone] or [phone]
Return Line Reservoir
Relief Valve
Trailer Return Line
Female Quick Coupler
Tractor Return Line
Male Quick Coupler
Filter Heads
Lines to and
from Drive Unit
Trailer Pressure Line
Male Quick Coupler Tractor Pressure Line
Female Quick Coupler
Pressure Line
NOTE: PRESSURE LINE
MUST BE ATTACHED TO
THIS PORT!!!
Switching Valve
3/4” Pressure
Relief Hose
2” Suction Hose
Pump
P.T.O.

OWNER / OPERATOR MANUAL LeakProof III
4 DOC06436 Rev B
2.3 Floor Speed vs Pump Flow Rate
With a Fuller 13 or 15 speed transmission, a bottom mount 118% series 442/489 Chelsea power take o󰀨,
and a Commercial p-51 pump with a 2 1/2” gear, the tractor unload RPM in relation to oor movement is
as follows*.
Truck RPM Pump Output Floor Movement
950 RPM 30 gallon 7.3 ft/minute
1270 RPM 40 gallon 9.8 ft/minute
1430 RPM 45 gallon 11.1 ft/minute
1750 RPM 55 gallon 13.3 ft/minute
1900 RPM 60 gallon 14.6 ft/minute
Above specications are for KEITH®LEAKPROOF III Drive units with 80mm bore cylinders. These are
approximate feet per minute only and should be used strictly as a guide.