Tulsa Rufnek Intelliguard 45 User manual

SEL-0034-003.DOC
REV-0
RUFNEK 45
SERVICE MANUAL
INTRODUCTION AND THEORY OF OPERATION ............................................................................2
ASSEMBLY NUMBER EXPLANATION..............................................................................................2
WINCH MODEL CODES......................................................................................................................2
!WARNING!...........................................................................................................................................3
MAINTENANCE....................................................................................................................................5
GENERAL DISASSEMBLY .................................................................................................................6
A.MOTORDISASSEMBLY ...................................................................................................................................................7
B.BRAKE SECTIONDISASSEMBLY ...................................................................................................................................7
C.DRUM SECTION DISASSEMBLY.....................................................................................................................................8
D.GEAR SECTIONDISASSEMBLY...................................................................................................................................10
E.INPUTPLANETSETDISASSEMBLY.............................................................................................................................11
F.OUTPUTPLANETSET DISASSEMBLY.........................................................................................................................12
GENERAL ASSEMBLY......................................................................................................................13
G.OUTPUTPLANETSET ASSEMBLY...............................................................................................................................13
H.INPUTPLANETSETASSEMBLY...................................................................................................................................14
I.GEAREND ASSEMBLY....................................................................................................................................................15
J.DRUM SECTIONASSEMBLY..........................................................................................................................................16
K.BRAKE SECTIONASSEMBLY........................................................................................................................................17
L.MOTORASSEMBLY........................................................................................................................................................18
TROUBLESHOOTING........................................................................................................................19
RUFNEK 45 BILL OF MATERIAL .....................................................................................................20
VISCOSITY CHART............................................................................................................................23
TORQUE SPECIFICATIONS CHART................................................................................................24
RUFNEK 45 ISOMETRIC DRAWING................................................................................................25
DESIGN SERIES 003

2
ASSEMBLY # SERIES
DESIGN
81865 003
INTRODUCTION AND THEORY OF OPERATION
The Rufnek series planetary winch is designed to use a high-speed gear motor, driving
through a multiple disc brake, through two planet sets to the cable drum.
The multiple disc brake is spring applied and hydraulically released through a port in the
brake housing. During inhaul, the brake is not released since the load is driven through the
one-way cam clutch, bypassing the brake. When the load comes to a stop, the cam clutch
locks up and the load is prevented from moving by the brake.
The brake and brake valve receives its signal any time the winch is in pay out. With the
brake fully open at about 340 PSI the brake valve will open and dynamically control the
lowering of the load.
ASSEMBLY NUMBER EXPLANATION
This manual is for design series 003. In the case of a major design change
implementation, a new design series designation number will be issued for the winch. A
new manual will also be created for that specific design series.
WINCH MODEL CODES
Gear Type
W=Worm
P=Planetary
Drive Type
H=Hydraulic
M=Mechanical
Gearbox Position
L=Left
R=Right
(viewed from rear of truck)
Input Shaft Location
F=Front
R=Rear
X=Does not apply
(viewed from rear of truck)
Cable Spooling
O=Over Drum
U=Under Drum
(viewed from rear of truck)
Clutch Device
M=Mechanical
A=Air
Motor Type
1. Single Speed Gear Motor
2. Two Speed Gear Motor
3. Single Speed Geroler Motor
4. Two Speed Geroler Motor
5. Piston
6. Vane
X. No Motor
RN45 P HLXOA1

3
!WARNING!
FAILURE TO HEED THE FOLLOWING WARNINGS
MAY RESULT IN SERIOUS INJURY OR DEATH.
The safety of the winch operator and ground personnel should always be of great concern,
and all necessary precautions to insure their safety must be taken. The primary mover and
the winch must be operated with care and concern for the equipment and the environment
and with a thorough knowledge of the equipment and its performance capabilities must be
understood. These general safety guidelines are offered, however local rules and
regulations or national standards may also apply. Recommended references are, but not
limited to, ANSI B30, OSHA 1910, AWS D 14.3, and SAE J706.
Additional information can be found at http://www.team-twg.com/TulsaWinch/
Mounting:
Winch mounting must be secure and able to withstand the applied loads.
•The stability of the mounting system must be approved by a qualified person.
•All welding should also be done by a qualified person.
•Winch mount must be flat so as not to induce binding.
•The flatness must not exceed 1/16 inch across the mounting surface of the winch
itself.
Guards must be placed on all open drives in the case of mechanical winches. Insure that
all hydraulic hoses, valves and fittings are rated to winch manufacturer’s operating
pressures.
Relief valves should be set to winch manufacturer’s specifications. Insure that all PTO’s
and drivelines are sized appropriately for the winch manufactures speed and torque
specifications.
Indicates an imminently hazardous situation which, if
not avoided, will result in death or serious injury.
Indicates a potentially hazardous situation which, if
not avoided, could result in death or serious injury.
Indicates a potentially hazardous situation which,
if not avoided, may result in minor or moderate injury
or property damage.
Indicates information or a company policy that
relates directly or indirectly to the safety of
personnel or protection of property.

4
Operator:
Must read and understand the operating and service manual.
Both the SERVICE MANUAL and OPERATING AND MAINTENANCE MANUAL
are available online at http://www.team-twg.com/TulsaWinch/
Must never lift or move people with this winch.
This winch is not designed or intended for any use that involves moving people.
Must stay clear of the load at all times.
Ground personnel should remain a safe distance from the load and winch cable at
least 1 ½ times the length of cable measured from the winch to the load.
Must stay clear of the cable at all times.
A broken cable can cause serious injury or death.
Must avoid shock loads.
Shock loads can impose a strain on the winch that can be many times the design
rating.
Must be aware of the fleet angle of the winch.
All loads should only be pulled with the load line perpendicular to the drum shaft, this
is to avoid excessive stresses on the winch and will help prevent the cable from
building on one side of the drum flange.
Must wear personnel protective equipment (PPE) if required.
Check the local, state and federal regulations for compliance.
Must insure that the drum clutch is fully engaged before hoisting.
A visual inspection of the drum clutch engagement is required before each winching
operation.
Must rig all loads secure before winching.
Pull the load line taut and inspect the condition of load for stability.
Must inspect the drum brake if equipped.
The drum brake is not a load holding device it is design to prevent over spooling of
the drum and causing bird nesting of the cable on the drum. Inspect the brake for
wear of the lining and the actuation method.
Must inspect the load control brake.
These winches are equipped with two (2) forms of dynamic braking. The spring-
applied/hydraulically-released multi-disc oil brake is one method. Before a load is
handled the load should be pulled tight and stopped to check this brake. The second
method is a hydraulic lowering control. The same method should be used to check
this brake.
Operation:
•All winch controls must be well marked for function to avoid confusion.
•All winch controls must be located to provide the operator with a clear view of the
load.
•The clutch must be inspected daily for proper operation.
•The winch cable should be inspected daily for serviceability.
•A minimum of five wraps of tightly wound cable must remain on the drum.

5
MAINTENANCE
Tulsa Rufnek series planetary winches, like any other piece of machinery, need to be
periodically serviced and well maintained to insure proper operation.
Good maintenance consists of four steps.
1. A daily inspection to insure that there are no oil leaks present, all mounting bolts and
other fasteners are tight, and that the wire rope is in good condition.
2. Changing the oil in both the gearbox and the brake section. (Severity of use will
determine the need for oil changes but the oil should be checked at a minimum of every
500 hours. Factors such as extremely dirty conditions or widely varying temperature
changes may dictate even more frequent servicing).
3. Lubing drum bushings and sliding clutch with grease. The drum bushings are lubed thru
two grease zerks located on drum barrel.
4. Complete teardowns and component inspections. (Again, severity and frequency of
use will determine how often this should be done). If the equipment that this winch is
mounted to is subject to standards for this type of inspection, then those standards must
be followed. If oil changes reveal significant metallic particles then a teardown and
inspection must be made to determine the source of wear.
Rufnek series planetary winches are designed with a common oil reservoir for the gearbox
and brake. The winches are shipped from the factory filled with Mobilube SHC SAE 75W-
90 synthetic gear oil which is satisfactory for operation in ambient temperatures from -40°F
to +110°F. If winch will be operated in temperatures outside this range, contact Tulsa
Winch for recommendations.
The oil is drained by removing the drain plugs (86 & 81) located at bottom of gear housing
(60) & bottom of brake cover (2), then remove the fill plugs (74 & 81) located at the top of
the gear housing (60) & the top of the brake cover (2). Inspect the oil for signs of metallic
particles and/or burning and dispose of in a proper manner. Then re-install the drain plugs.
Fill the brake end with (1 pint) Mobilube SHC SAE 75W-90, then fill the gear end with (7
quarts) of Mobilube SHC SAE 75W-90 oil and replace both of the fill plugs.
OIL CAPACITY = 7 1/2 QUARTS

6
1. Drain the oil from the brake assembly by
removing the plug (81) from bottom of brake
cover (2).
2. Remove hoses (42, 45, 58, 79, 80).
3. Remove the counterbalance block (32) and
the manifold block (56), from the motor by
removing the four capscrews (48).
4. Remove the motor from the winch by
removing four capscrews (88).
5. Remove the counterbalance valve (50) from
the counterbalance block (32) and inspect the
metering hole to make sure it is not
obstructed. Also, inspect the o-rings on valve
to insure that they are not flat or cut. Replace
if necessary.
6. Motors and counterbalance valves are not
serviceable in the field. Return them to an
authorized dealer for service.
7. Inspect the o-rings (98) & (49) for damage.
GENERAL DISASSEMBLY
A. MOTOR DISASSEMBLY

7
B. BRAKE SECTION DISASSEMBLY
1. Evenly remove the four capscrews (3) that
hold the brake cover (2) in place. Spring
pressure will raise the cover up as the
capscrews are loosened. Carefully remove
the cover (2) from the brake housing (20).
Inspect the o-ring (6) on cover for damage.
2. Remove the springs (7) from the piston (5)
and check the free height. Each spring should
measure at least 1.084 inches with no force on
them.
3. Remove the piston (5) by installing two pieces
of 3/8”-16NC all thread into the two threaded
holes in the piston and run in evenly until the
piston is clear of the housing. An alternate
way of removing the piston is to use shop air
to slowly pressurize the brake port to remove
the piston from the brake housing (20).
4. Inspect the o-rings (8, 10) and back up rings
(9, 11) on the piston. Grasp the brake
driver/clutch assembly (assembled items 14,
17, 18, 19, 52, 82), and remove it from the
brake housing.
5. Remove the stator plates (12) and friction
discs (13) from the brake housing and check
them for excessive wear, and replace if
necessary. Be sure to check the top stator
plate for scoring caused by the removal of the
piston and polish if necessary. Friction discs
should measure no less than 0.055-in. thick
and stator plates should measure no less than
0.068-in thick.
6. To disassemble the brake driver/clutch
assembly, remove the retaining ring (17) from
either end of the driver. Then, remove the
brake driver (14) and bearing (52) from the
input driver (19). Next, remove the sprag
clutch (18). Finally, remove the retaining ring
(17) from the other end of the driver, then
remove the second bearing (52) from the input
driver.
Notice the direction of lock-up on
the clutch for re-assembly.
Inspect the input driver and brake driver for
wear, and replace if necessary.
7. Remove the bearing housing (16) and inspect
the needle bearing (15). If necessary, remove
the retaining ring (22) and replace.
8. If the bushing or seal in the brake housing
needs to be replaced, follow the drum section
disassembly and reassembly sections of this
manual prior to reassembly of the brake.

8
C. DRUM SECTION DISASSEMBLY
1. To remove the drum, first disconnect the cable
from the U-bolt (35) and lay aside. If removing
the drum from the motor end with the motor
and brake disassembled, first remove cotter
keys (100) and clevis pins (93) connecting
yoke (87) to bracket (101) & air cylinder (67).
You may need to remove the
airlines, so it’s a good idea to
mark them for re-assembly.
2. Support the weight of the drum with a hoist.
Remove the four capscrews (61) along with
the nuts and washers (62 & 63) on the bottom
of the brake housing (20). Disconnect the
airline running from the air cylinder (68) to the
brake housing (20). Remove the brake
housing by sliding the housing off the output
shaft (40-9). At this time you will need to
remove two capscrews (70), nuts and washers
(72 & 71) from the frames (64 & 65). Do not
remove air cylinder (68) yet. You can now
remove the brake band assembly (66). Note
which frame the mounting bolts are on for re-
assembly. Inspect and replace if needed.
3. Remove the outer thrust collar (105) by
loosening three set screws (89).
4. Remove the yoke (87), sliding clutch (27), and
coupler (30). Remove the two keys (94) from
the shaft (40-9). Remove the drum using a
hoist and inspect the bushings (31) & (4) at
both ends of the drum.
You should also inspect the bushing
and seal (38, 25) that are located
in the end of the brake housing.
5. If necessary, replace the drum clutch (28) at
this time by removing six capscrews (33). If
you replace the clutch, make sure to torque
the capscrews to the specified torque upon re-
assembly. (See torque specifications chart on
page 24 of this manual)

9
CLUTCH INSPECTION

10
D. GEAR SECTION DISASSEMBLY
To remove the output gear set (40),
the drum must first be removed, see
DRUM DISASSEMBLY section on
page 7 of this manual.
1. Drain the oil by removing the plug (86).
2. To disassemble the gear section, remove the
Intelliguard™ sensor (39) from the outer cover
(55) by removing three capscrews (44).
Inspect the gear teeth on the Intelliguard™
(23) for wear. The Intelliguard™ system is not
serviceable in the field. Return to an
authorized dealer for service.
3. Remove the end cover (55) by removing eight
capscrews (21).
4. Inspect the o-rings (36 & 59) for wear and
replace if necessary.
5. Remove the input gear set (41) along with the
inner and outer thrust washers (43). Inspect
and replace if necessary.
6. Remove the output sun gear (47). Carefully
remove the output gear set/output shaft
assembly (40) from the gear housing (60).