Greenlee LPK1550 User manual

SERVICE MANUAL
LPK1550
Hydraulic Crimping Tool
15-ton
Serial Code FYF
99932288 REV 4 © 2019 Greenlee Tools, Inc. 2/19
Read and understand all of the instructions and
safety information in this manual before operating
or servicing this tool.
Register this product at www.greenlee.com

LPK1550 Hydraulic Crimping Tool
Greenlee Tools, Inc. 4455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070
2
Safety
Safety is essential in the use and maintenance of
Greenlee tools and equipment. This manual and any
markings on the tool provide information for avoiding
hazards and unsafe practices related to the use of this
tool. Observe all of the safety information provided.
Purpose of this Manual
This manual is intended to familiarize all personnel with
the safe service procedures for the following Greenlee
tool:
LPK1550 (49355) Serial Code FYF
Keep this manual available to all personnel.
Replacement manuals are available upon request
at no charge at www.greenlee.com.
Other Publications
Instruction Manual: Publication 99932245
SAE Standard J1273 (Hose and Hose Assemblies):
Publication 99930323
All specications are nominal and may change as design
improvements occur. Greenlee Tools, Inc. shall not be liable for
damages resulting from misapplication or misuse of its products.
Loctite and 242 are registered trademarks of Loctite Corporation.
KEEP THIS MANUAL
Table of Contents
Safety ............................................................................ 2
Purpose of this Manual ................................................. 2
Other Publications......................................................... 2
Important Safety Information .....................................3–4
Relief Valve Check
and Adjustment Procedure............................................ 5
Tool Setup ..................................................................... 5
Disassembly .................................................................. 6
Inspection...................................................................... 6
Assembly....................................................................... 7
Illustration...................................................................... 8
Parts List ....................................................................... 9

LPK1550 Hydraulic Crimping Tool
Greenlee Tools, Inc. 4455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070
3
IMPORTANT SAFETY INFORMATION
SAFETY
ALERT
SYMBOL
This symbol is used to call your attention to hazards
or unsafe practices which could result in an injury or
property damage. The signal word, dened below,
indicates the severity of the hazard. The message
after the signal word provides information for pre-
venting or avoiding the hazard.
Immediate hazards which, if not avoided, WILL result
in severe injury or death.
Hazards which, if not avoided, COULD result in
severe injury or death.
Hazards or unsafe practices which, if not avoided,
MAY result in injury or property damage.
Read and understand all of the
instructions and safety information
in this manual before operating or
servicing this tool. Refer also to the
Instruction Manual, which is listed
under “Other Publications.”
Failure to observe this warning
could result in severe injury or death.
Skin injection hazard:
• Do not use hands to check for
leaks.
• Do not hold hose or couplers
while the hydraulic system is
pressurized.
• Depressurize the hydraulic system
before servicing.
Oil under pressure easily punc-
tures skin, causing serious injury,
gangrene, or death. If you are
injured by escaping oil, seek medical
attention immediately.
Wear eye protection when operating
or servicing this tool.
Failure to wear eye protection could
result in serious eye injury from
ying debris or hydraulic oil.
Wear hearing protection when using
this tool.
Long-term exposure to high noise
levels could result in hearing loss.
The hydraulic cylinder may be hot
during and after operation. Hot sur-
faces can cause serious burns.
Keep hands away from dies when
crimping.
Failure to observe this warning
could result in severe injury or death.

LPK1550 Hydraulic Crimping Tool
Greenlee Tools, Inc. 4455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070
4
Do not exceed the following hydraulic power source
maximums:
• Hydraulic ow: 34.1 l/min (9 gpm).
• Pressure relief setting: 172 bar (2500 psi).
• Back pressure: 13.8 bar (200 psi)
Failure to observe this warning could result in severe
injury or death.
Do not disconnect tool, hoses or ttings while the
power source is running or if the hydraulic uid is
hot. Hot hydraulic uid can cause serious burns.
Do not reverse hydraulic ow. Operation with
hydraulic ow reversed can cause tool malfunction.
Connect the pressure (supply) hose and tank (return)
hose to the proper tool ports.
Failure to observe this warning could result in severe
injury or death.
Do not change accessories, inspect, adjust, or
clean tool when it is connected to a power source.
Accidental start-up can result in serious injury.
Failure to observe this warning can result in severe
injury or death.
Hydraulic oil can cause skin irritation.
• Handle the tool and hoses with care to prevent
skin contact with hydraulic oil.
• In case of accidental skin contact with hydraulic
oil, wash the affected area immediately to remove
the oil.
Failure to observe these precautions may result in
injury.
Procedure for connecting or disconnecting hydraulic
hoses, ttings, or components:
1. Move the ow lever on the hydraulic power
source to the OFF position.
2. Stop the hydraulic power source.
3. Follow the sequence under “Hose Connections”
in the Instruction Manual to prevent pres-
sure buildup. In case some pressure has built
up, loosen hoses, ttings, or components
slowly.
Note: Keep all decals clean and legible, and replace
when necessary.
When disposing of any components (hydraulic hoses,
hydraulic fluid, worn parts, etc.), do so in accordance
with federal, state, and local laws or ordinances.
IMPORTANT SAFETY INFORMATION

LPK1550 Hydraulic Crimping Tool
Greenlee Tools, Inc. 4455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070
5
Relief Valve Check and Adjustment Procedure
1. Use one of these methods for checking the setting
of the relief valve:
• Purchase a Greenlee 35887 Load Cell. Refer to
the instructions supplied with the load cell. The
proper relief pressure is within the 15-ton range
indicated on the gauge.
• Install an in-line pressure gauge at the tool’s input.
With dies in place, perform a test crimp. The
proper relief pressure range is 103 bar to 107 bar
(1500 psi to 1550 psi).
2. To change the setting, remove the cap (50) and
rotate the set screw (48):
• clockwise to increase the relief pressure
• counterclockwise to decrease the relief pressure
Note: The copper washer (49) may fall free when
the cap (50) is removed.
3. Install the copper washer (49) and cap (50). Without
changing the setting of the set screw (48), tighten
the cap.
4. Perform three more test crimps to be sure that the
relief valve setting was not disturbed during Step 3.
Tool Setup
This tool can be used on either open-center or
closed-center hydraulic systems.
Open-Center Setting
1. With the ram retracted, disconnect the crimping tool
from the hydraulic power source.
2. Loosen the two seal nuts. Back each seal nut out to
the end of the screw.
3. Turn the screws clockwise — evenly, alternating
every one to two turns —until they contact the
piston and feel snug.
4. Back the screws out — evenly, alternating every one
to two turns —exactly four complete turns.
5. Hold the screws in place with an Allen wrench and
tighten the seal nuts against the cover. Torque the
seal nuts to 6.78 newton-meters (5 foot-pounds).
Adjusting
Screw
Seal Nut
Closed-Center Setting
1. Disconnect the crimping tool from the hydraulic
power source.
2. Loosen the two seal nuts.
3. Turn the screws counterclockwise — evenly, alter-
nating every one to two turns — until they contact
the stops.
4. Hold the screws in place with an Allen wrench and
tighten the seal nuts against the cover. Torque the
seal nuts to 6.78 newton-meters (5 foot-pounds).
Adjusting
Screw
Seal Nut
Installing Dies
1. Clean the die seat area.
2. Install the proper size and type of crimping dies.
Refer to the “LPK1550 Die Installation” section of
the Instruction Manual.

LPK1550 Hydraulic Crimping Tool
Greenlee Tools, Inc. 4455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070
6
Disassembly
Complete disassembly of the tool is not recommended.
If a complete overhaul is necessary, return the tool
to your nearest authorized Greenlee distributor or to
Greenlee.
The disassembly procedure is divided into sections of
the tool. Disassemble only the section(s) necessary to
complete the repair.
Disassemble the tool on a at, clean surface. Take care
not to lose or damage any parts that may fall free during
disassembly.
Handle
1. Remove four screws (31) and the trigger strap (30).
2. Remove one retaining ring (34) and slide the trigger
pivot pin (33) out of the handle assembly (26).
Remove the trigger (32).
3. Remove 16 screws (27) and cover (20) from the
cylinder (6). Remove the O-ring (19).
4. Remove the retaining ring (28) from the handle
assembly (26). Remove the tube assembly (22) and
O-ring (24).
5. Opposite the trigger side of the handle, remove the
retaining ring (40), spring cap (39), and spring (37).
6. On the trigger side of the handle, remove the retain-
ing ring (40) and washer (36). Remove the spool
assembly (41) toward the trigger side. Remove the
spool groove O-ring (35) from the spool.
7. Opposite the trigger side, remove the spool OD
O-ring (38) from the handle.
8. Remove cap (50), copper washer (49), adjusting
screw (48), spring (47), and valve pin (46) from the
handle.
9. Remove retaining ring (70), ball stop (69), and ball
(68).
10. Remove pipe plugs (45).
11. If necessary, disassemble the shuttle stop ring (14)
from the cover (20): Remove the seal nuts (44).
Then turn the screws (15) evenly — alternating
every one to two turns — until they disengage from
the cover (20). Remove the retaining rings (16) and
screws (15) from the shuttle stop ring.
12. If necessary, remove the handle (26) from the
cover (20) by using low heat to break loose the
thread locking compound that holds them together.
Remove the handle (26), shims (21), and O-ring (29).
Cylinder and Ram
1. Remove four screws (51) and washers (67). Thread
two 5/16–18 screws (not provided) into the tapped
holes in the piston (7). Grasp these screws to pull
the piston out of the cylinder.
2. Remove the piston seal (18), ring (17), and O-ring
(24) with backup rings (25) from the piston.
3. Remove two screws (13), washers (12), and shuttle
spools (11) from the piston.
4. Remove the rotational stop screw (5) from the cylin-
der (6).
5. Unscrew the C-head assembly (1) from the cylinder.
6. Remove the ram assembly (2), washer (3), and wiper
(4) from the cylinder.
7. Remove the O-ring (10) and backup ring (9) from the
ram (2).
Inspection
Clean all parts with solvent and dry them thoroughly.
Inspect each component, and replace any that shows
wear or damage.

LPK1550 Hydraulic Crimping Tool
Greenlee Tools, Inc. 4455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070
7
Assembly
Refer to the illustration and parts list for the correct
orientation and placement of parts.
Replace any O-rings, V-rings, seals, and gaskets on
parts that have been disassembled. Apply hydraulic
uid or O-ring lubricant to all O-rings and all metal
surfaces which they must slide over. When installing
an O-ring which must slide over sharp surfaces, use a
rolling motion and be careful not to damage the O-ring.
Wherever the assembly results in metal-to-metal
contact, coat the surfaces with hydraulic uid or
O-ring lubricant.
Some steps of the assembly procedure require a remov-
able type of thread sealing and locking compound, such
as Loctite®242®or equivalent. Follow the manufactur-
er’s instructions for curing.
Cylinder and Ram
1. Install O-ring (10), backup ring (9), washer (3), and
wiper (4) onto the ram (2).
2. Slide the ram assembly into the cylinder (6) until it
bottoms out.
3. Screw the C-head assembly (1) onto the cylinder (6)
until the at surface of the C-head is ush with the
similar at surface of the ram.
Screw the C-head to
the cylinder until these
surfaces are flush.
4. Apply a thread locking compound to the rotational
stop screw (5) and install it into the cylinder (6).
5. Install ring (17), seal (18), and O-ring (24) with
backup rings (25) onto the piston (7).
6. Apply a thread locking compound to the screws
(13). Install shuttle spools (11), washers (12), and
screws (13). Remove excess compound after
assembly and apply a thin coat of oil to the sur-
rounding area.
7. Apply a thread locking compound to the threaded
holes of the ram — one bead of compound along
the entire length of the thread. Install the piston (7)
into the cylinder (6) and secure it to the ram assem-
bly (2) using screws (51) with washers (67). Torque
to 16.9 newton-meters (150 inch-pounds).
Handle with Cylinder Cover
1. Install the ball (68), ball stop (69), and retaining ring
(70).
2. Install two 1/8" pipe plugs (45) into the handle (26).
3. Install the O-ring (24) onto the tube assembly (22).
Slide the tube assembly into the handle (26) and
secure it with the retaining ring (28).
4. Install the spool OD O-ring (38) into the handle,
and install the spool groove O-ring (35) onto the
spool (41). From the trigger side, install the spool
assembly (41) into the handle (26).
5. Opposite the trigger side, install the spring (37) and
spring cap (39), and secure them with a retaining
ring (40).
6. From the trigger side, install the stop washer (36)
and retaining ring (40) into the handle.
7. Install the valve pin (46), spring (47), adjusting
screw (48), copper washer (49) and cap (50) into the
handle.
8. Screw the handle assembly (26) into the cover (20)
until it is snug. Add or remove shims (21) — six
maximum — to allow access to the stop ring adjust-
ment screws (15) and nuts (44). After installing the
proper number of shims, install the O-ring (29).
Reassemble using a thread locking compound on
the threads that mate the handle to the cover.
9. If removed, assemble the screws (15) to the shuttle
stop ring (14) and secure them with the retaining
rings (16). Install that assembly to the cover (20) and
start the seal nuts (44) onto the screws (15).
Note: The setting of the screws (15) isn’t important
now — you will adjust them to the proper position
later in the assembly procedure.
10. Assemble the O-ring (19) to the cover (20).
11. Install the cover (20) into the cylinder (6), aligning
the handle with the C-head. Secure with 16 cap
screws (27). Torque to 32.5 newton-meters
(24 foot-pounds).
12. Position the trigger (32) onto the handle (26), align-
ing the holes. Install the trigger pivot (33) and secure
it with 5/32" external retaining rings (34). Position
the trigger strap (30) onto the handle and secure it
with four screws (31).
Final Settings
1. If the shuttle stop ring (14) was removed, refer to
“Tool Setup” to adjust it to its previous position (for
either open-center or closed-center operation).
2. Set the relief valve to the proper pressure. Refer to
“Relief Valve Check and Adjustment Procedure.”

LPK1550 Hydraulic Crimping Tool
Greenlee Tools, Inc. 4455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070
8
Illustration
2
60
3
4
9
54
6
11
12
67
13 51
27
61
40 39 37 38
22
45
10
5
17
18
7
25
24
25
30
32
34
31
33
28
26
41, 42, 43
35 36 40
47
46
50
48
49
56
72
55
20
14
29
44
16
15
19
15
16
44
24
23
21
57
53
68
70
69
59
59
1
62
59
66
65
63
64

LPK1550 Hydraulic Crimping Tool
Greenlee Tools, Inc. 4455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070
9
Parts List
UPC No.
Key 78-3310- Part No. Description Qty
1 49352 50493523 C-head unit
(includes items 59, 60, 62–66) ..............1
2 49357 50493574 Ram ......................................................1
3* Washer..................................................1
4* Wiper.....................................................1
5 Screw, cap, 1/4–20 x 1.00",
socket head ..........................................1
6 49359 50493590 Cylinder (includes
items 54–57, 71–72)..............................1
7 48795 50487957 Piston....................................................1
9* Backup ring, 1.37 x 1.62 x .121" ..........1
10* O-ring, 1.37 x 1.62 x .125"....................1
11 43546 50435469 Spool, shuttle........................................2
12 43547 50435477 Washer, shuttle .....................................2
13 Screw, cap, #6–32 x .375",
at head socket ....................................2
14 48727 50487272 Ring, shuttle stop..................................1
15 48881 50488813 Screw....................................................2
16* Retaining ring........................................2
17* Ring.......................................................1
18* Seal unit ................................................1
19* O-ring, 5.125" .......................................1
20 49898 50498983 Cover ....................................................1
21 48737 50487370 Shim, handle ............................... 6 (max)
22 43554 50435540 Tube ......................................................1
23 42685 50426851 Carrier, seal ...........................................1
24* O-ring, .375 x .500 x .062"–70..............2
25* Backup ring, .382 x .486 x .045" ..........2
26 48736 50487361 Handle...................................................1
27 Screw, cap, 5/16–18 x 1.25",
socket head ........................................16
28* Retaining ring, .750" .............................1
29* O-ring, 1.625 x 1.750 x .062"–70..........1
30 43699 50436996 Strap, trigger.........................................1
31 Screw, cap, #10–32 x .375",
button socket head...............................4
32 42576 50425760 Trigger ...................................................1
33 42547 50425471 Pivot, trigger .........................................1
34* Retaining ring........................................2
35* O-ring, .437 x .562 x .062"–68..............1
36 43401 50434012 Washer, .75 x .50 x .03..........................1
37 42865 50428651 Spring, valve plunger ............................1
38* O-ring, .562 x .750 x .093"–68..............1
39 41095 50410952 Cap .......................................................1
40* Retaining ring, .750" .............................2
41 52063245 Spool.....................................................1
UPC No.
Key 78-3310- Part No. Description Qty
42 43556 50435566 Plug, spool............................................1
43* O-ring, .250 x .375 x .062"–90..............1
44* Nut, 1/4–20, Hydra-Lok seal.................2
45 Plug, pipe, 1/8" NPTF ...........................2
46 30146 50301462 Pin, valve, .305 x .870" .........................1
47 40692 50406921 Spring, unloading valve ........................1
48 48261 50482610 Screw, set, 1/2–20, adjusting................1
49* Washer, at, .514 x .030, copper ..........1
50 48260G 50482602 Cap, relief valve ....................................1
51 Screw, cap, 1/4–20 x 1.625, socket......4
52* Backup ring...........................................1
53 41432 50414323 Plug, port ..............................................2
54 49947 50499475 Decal, specications.............................1
55 48734 50487345 Decal, OC/CC setting ...........................1
56 49946 50499467 Decal, warning ......................................1
57 41547 50415471 Decal, Greenlee ....................................1
59 53962 90539621 Plunger, spring #10-32 x .500 ..............3
60 06214 50062140 Decal, pinch warning ............................1
61 54813 90548132 Washer, at .344 x .688 x .060" ..........16
62 Screw, set #10-32 x .187
socket head ..........................................1
63 05434 50054341 Button, die retainer ...............................2
64 05435 50054350 Nut, retaining ........................................2
65 05433 50054333 Spring, compression.............................2
66 05432 50054325 Disc, at ................................................2
67 54913 90549139 Washer, conical, .55 x .25 x .05 ............4
68 41873 50418730 Ball, steel, .5"........................................1
69 49234 50492349 Stop, ball...............................................1
70* Retaining ring........................................1
72 49959 50499599 Decal, sound.........................................1
Repair Kit
* 49358 50493582 Packing kit (includes items
marked with an asterisk).......................1
Decals
49947 50499475 Decal, specications.............................1
48734 50487345 Decal, OC/CC setting ...........................1
49946 50499467 Decal, warning ......................................1
41547 50415471 Decal, Greenlee ....................................1
06214 50062140 Decal, pinch warning ............................1
49959 50499599 Decal, sound.........................................1

4455 Boeing Drive • Rockford, IL 61109-2988 • USA • 815-397-7070
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