Lincoln 740 Owner's manual

FAILURETO HEED THE FOLLOWING WARNINGS MAYRESULTIN PERSONAL
INJURYAND/ORPROPERTY DAMAGE.
• ALWAYS determine the correct air pressure to operate the lubrication pump
Some air pressure operated pumps can develop pressure over 11,000 psi This
control valve is rated at 7,500 psi when equipped with a steel tube extension and
should not be operated above that pressure When this control valve is used with a
whip hose, the pressure rating is further reduced to the rating of the whip hose The
supply hose rating and any fittings to the control valve must also be considered To
determine the air pressure to operate the lubrication pump at, simply divide the rated
pressure of the lowest rated component on the down stream side of the pump by
the lubricant to air pressure ratio of the pump
EXAMPLE The whip hose attached to the control valve is the lowest rated compo-
nent and has a rating of 4,500 psi If the lubrication pump is a 501 pump, divide 4,500
psi by 50 to determine the correct air pressure setting (4,500 / 50-90 psi) Set the air
regulator that controls the air to the 501 pump to 90 psi or less
• NEVER point the dispensing valve at any part of the body or at another person
• NEVER try to stop or deflect material from the dispensing valve, leaking connection
or component with your hand
• ALWAYS relieve pressure from the system before servicing
•AVOID contact with the nozzle
• ALWAYS attach the spring guarded end of a whip hose to the grease coupling and
the non-spring guarded end to the control valve or gun
Page
Section - F3 - 2U
Form 403453APRIL- 2004
MODELS 740, 3050©, 81495, 82393
HIGH PRESSURE CONTROL VALVE
7,500 PSI RATED
OWNER/OPERATOR MANUAL
OWNER/OPERATOR
RESPONSIBILITY
It is the owner/operator responsibility to
properly use and maintain this equipment.
The instructions and warnings contained In
this manual shall be read and understood by
the owner/operator prior to operating this
equipment.
If an owner/operator does not understand
English, the contents of this manual shall be
explained in the owner/operator native
language to assure the owner/operator
comprehends.
It is the owner/operator responsibility to
maintain the legibility of all warning and
instruction labels.
The owner/operator shall retain this manual
for future reference to Important warnings,
operating and maintenance instructions.
DESCRIPTION
The control valve is designed to control the
flow of lubricant from high pressure lubricant
pumps.
OPERATION
Before using the valve, always make sure
the air pressure is set correctly to operate
the lubrication pump. Only a small pressure
on the control valve handle is required to
obtain lubricant flow from the nozzle.
The control valve dispenses lubricant when
the handle (45788) Is depressed and the
pull rod (11362) and ball retainer (11363)
move up, compressing the friction spring
(55029), allowing lubricant pressure to
unseat the steel ball (66255) and lubricant to
flow through the control valve. The ball
retainer (11363) limits the travel of the steel
ball (66255) and the lubricant flow rate is
determined by the distance the handle is
depressed.
When the handle (45788) is released, the
friction spring (55029) returns the handle to
its normal position and causes the ball
retainer (11363) to seat the steel ball
(66255) against the check seat (11364)
stopping the lubricant flow through the
control valve.
MAINTENANCE
If lubricant continues to flow from the
coupler after the handle is released, the
steel ball (66255) is not seating against the
check seat (11364).
Remove and Inspect the check seat (11364)
and the steel ball (66265). If the steel ball is
not perfectly smooth, replace it. The check
seat has a ball seat on both sides. If the
ball seat being used Is rough, worn or
pitted, invert the check seat and reassem-
ble the control valve. If both sides of the
check are damaged, replace the check seat
and the steel ball.
See Figure (1) After assembly, the adjust-
ment nuts at the top of the control valve
should be adjusted. To prevent damage to
the check seat, do not adjust for less than
1/32" pull rod travel.
RETAIN THIS INFORMATION
FOR FUTURE REFERENCE
One Lincoln Way
St. Louis, MO 63120-1578
[phone]
Copyright 2004
Printed in U.S.A.
website:
www.lincolnindustrial.com
© Indicates change

Page Number - 2 Form 403453
PART QUAN DESCRIPTION
5834 1 Hydraulic coupler w/extention
5845 1 Hydraulic coupler
10181 1 Nozzle adapter
11356 1 Control valve body
11362# 1 Pull rod
11363 1 Ball retainer
11364# 1 Check seat
11837 1 Toggle pivot screw
12826 1 Packing gland
12828 1 Pivot bar
35007# 1 Valve stempacking
45788 1 Handle
45820 1 Toggle link
48218# 1 Packing w asher
51043 3 Locknut
55029 1 Friction spring
62028 1 Nozzle extension
66177 1 Toggle pin
66255# 1 Steel ball
SERVICE PARTS
#Included in Repair Kit82157
MODEL COUPLING NUT INLET
82393 12869 1/4" NPT
F
81495 11396 3/8" NPT
F
Lincoln Industrial Standard Warranty
LIMITEDWARRANTY
Lincoln warrants the equipment manufactured and supplied by Lincoln to be free from defects in material and workmanship for a period of
one (1) year following the date of purchase, excluding there from any special, extended, or limited warranty published by Lincoln. If
equipment is determined to be defective during this warranty period, it will be repaired or replaced, within Lincoln’s sole discretion, without
charge.
This warranty is conditioned upon the determination of a Lincoln authorized representative that the equipment is defective. To obtain repair
or replacement, you must ship the equipment, transportation charges prepaid, with proof of purchase to a Lincoln Authorized Warranty
and Service Center within the warranty period.
This warranty is extended to the original retail purchaser only. This warranty does not apply to equipment damaged from accident,
overload, abuse, misuse, negligence, faulty installation or abrasive or corrosive material, equipment that has been altered, or equipment
repaired by anyone not authorized by Lincoln. This warranty applies only to equipment installed, operated and maintained in strict accor-
dance with the written specifications and recommendations provided by Lincoln or its authorized field personnel.
THISWARRANTYISEXCLUSIVEANDIS IN LIEUOFANYOTHERWARRANTIES,EXPRESSORIMPLIED, INCLUDING,BUT NOTLIMITEDTO,
THEWARRANTYOF MERCHANTIBILITYORWARRANTYOFFITNESSFORAPARTICULARPURPOSE.
In no event shall Lincoln be liable for incidental or consequential damages. Lincoln’s liability for any claim for loss or damages arising out
of the sale, resale or use of any Lincoln equipment shall in no event exceed the purchase price. Some jurisdictions do not allow the
exclusion or limitation of incidental or consequential damages, therefore the above limitation or exclusion may not apply to you.
This warranty gives you specific legal rights. You may also have other rights that vary by jurisdiction.
Customers not located in the Western Hemisphere or East Asia: Please contact Lincoln GmbH & Co. KG, Walldorf, Germany, for your
warranty rights.
Lincoln Industrial Contact Information
To find Lincoln Industrial’s Nearest Service Center call 314-679-4200, or you may also use our website www.lincolnindustrial.com