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OPERATION, SERVICE AND PARTS
INSTRUCTION MANUAL
Current for all pumps
with Serial No. code LC
950-M3 BASIC
HYDRAULIC POWER PUMP
Read and understand this material before
operating or servicing this tool. Failure to
understand how to safely operate the tool
could result in an accident causing serious
injury or death.
999 6465.1 © 1997 Greenlee Textron IM 848 REV 3 8/97
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950-M3 Basic Hydraulic P ower Pump
SAFETY
ALERT
Immediate hazards which, if not avoided, WILL result in
severe personal injury or death.
SYMBOL
The symbol above is used to call your attention
to instructions concerning your personal safety.
Watch for this symbol. It points out important safety
precautions. It means “ATTENTION! Become alert!
Your personal safety is involved!” Read the
message that follows and be alert to the possibility
of personal injury or death.
Safety is a critical factor in the design of Greenlee equipment. The best program starts with a safety-conscious
operator. The information highlighted in this bulletin describes operating practices for the benefit of the workers
who will use our equipment in their daily jobs. Comments from users are appreciated.
A person who has not read and does not understand all
operating instructions is not qualified to operate this tool.
Hazards or unsafe practices which, if not avoided, COULD
result in severe personal injury or death.
Hazards or unsafe practices which, if not avoided, COULD
result in minor personal injury or property damage.
Failure to read and understand safety instructions may
result in injury or death.
Greenlee Textron / Subsidiary of Textron
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4455 Boeing Dr., Rockford, IL 61109-2988 815/397-7070
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950-M3 Basic Hydraulic P ower Pump
IMPORTANT SAFETY INSTRUCTIONS
• Do not connect the pump to any system or
system component other than those supplied
by Greenlee and rated at less than 10,000 psi
(68,950 kPa).
• Do not alter the internal high-pressure relief
valve setting.
• Do not use this pump in a hazardous
environment. Hazards include open flame and
flammable liquids or gases.
Failure to observe these warnings will result in
severe injury or death.
Electric shock hazard:
• Do not expose power tools to rain.
• Do not immerse the pendant
switch in water or other liquid.
Skin Injection Hazard:
High pressure oil easily punctures
skin causing serious injury, gangrene
or death. If injured seek medical help
immediately to remove oil.
Do not use fingers or hands to check
for leaks.
Depressurize hydraulic system
before disconnecting the hose.
• Inspect pump, hoses, couplers and fittings for
wear or damage. Replace worn, damaged or
missing components with Greenlee replacement
parts.
• Do not twist, kink, curl, paint or cut the
hydraulic hoses.
• Wear eye protection when operating this
equipment.
• Disconnect the pump from the power supply,
rotate the release valve lever to AUTO RELEASE
and disconnect the hose from the ram and the
pump before performing any service.
Failure to observe these warnings could result in
severe injury or death.
• The pump is heavy, weighing up to 75 lbs.
Follow NIOSH work practices for manual lifting.
If in doubt, get help.
• Unplug pump when not in use and when changing accessories.
• Do not use the hose to pull, lift, or carry the
equipment.
• Always work in an area providing good footing
and support.
• Keep work area well-lit, free of clutter, and dry.
Failure to observe these precautions could result
in injury or property damage.
SA VE THESE INSTRUCTIONS
Additional copies of this manual are available upon request at no charge.
Greenlee Textron / Subsidiary of Textron
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950-M3 Basic Hydraulic P ower Pump
Introduction
The 950-M3 Hydraulic Power Pump is a high-pressure
hydraulic power pump which is simple to operate,
lightweight, durable and portable.
This power pump has a built-in high volume / low
pressure pumping feature which gives fast approach
ram action and automatic changeover to low volume /
high pressure when pressure exceeds 100 psi. The
pumping unit consists of one piston, radial-type, capable
of developing 10,000 psi.
Assembly
The 950 Power Pump is completely assembled and is
shipped to you as a complete pumping unit. The only
assembly necessary is the connections of the ram to the
pump.
Operating Instructions
This pump is designed to operate at 10,000 psi intermittently. For continuous service, such as production
work, the pressure should not exceed 6,000 psi. This
limitation is for engine protection only.
Before operating pump, check the following to assure
proper service:
1. The gasoline engine is shipped without oil or gasoline; refer to the manufacturer’s instruction manual
for recommended type and quantity before starting
engine.
2. Check tightness of hose connections before starting
engine.
3. Check hydraulic oil with dipstick (52). Oil should be
within 1/2" of reservoir top.
4. Start engine and allow the pump to idle a few minutes. This will allow the hydraulic oil to work into
moving parts and give prime to the pump.
Service
Filling Oil Reservoir
In order for the pump to operate properly, the oil
reservoir must be kept filled with a good grade of light
hydraulic oil. Use Greenlee Hydraulic Oil 905 0806.8
(quart) or 905 1059.3 (gallon) or equivalent.
Eight quarts are required, of which 6-1/4 quarts are
usable. A minimum of 1-3/4 quarts must be at the
bottom of the reservoir at all times during operation.
Be sure that the complete operation does not require
more than the usable amount of oil.
Never use synthetic fluids or fluids with poor lubricating qualities (i.e., brake fluids, etc.), as permanent
injury to the pump will result.
To refill or add oil to the reservoir, proceed as follows:
1. Remove vent plug from top of reservoir.
2. Add oil to within 1/2" of reservoir top when ram is
retracted.
3. Install vent plug securely.
Note: Before operation, be sure vent plug is not
clogged.
Draining Oil Reservoir
Unscrew and remove 3/4 inch pipe plug (51) from side
of pump base. Turn pump on its side to drain all oil from
reservoir. Be sure to replace plug before refilling reservoir with oil.
Greenlee Textron / Subsidiary of Textron
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950-M3 Basic Hydraulic P ower Pump
Flushing System
As long as the pump is used as outlined in the operating
instructions, long, trouble-free performance can be
expected. To maintain this performance, it is absolutely
essential that dirt or other foreign matter be kept out
of the system, as this is the most common cause of
hydraulic system failure. Therefore, when opening up
the pump for any reason, such as making pipe connections, adjusting pressure or any repair, be sure to
exercise extreme care in cleanliness and to use clean
tools and cloths. If, at any time, dirt is suspected to have
found its way into the system, the entire oil system
should be flushed as follows:
1. Drain oil from reservoir.
2. Fill reservoir with any recommended flushing oil or
clean kerosene and operate pump. Work the control
handle back and forth several times during flushing
to wash all foreign particles from the control valve
unit.
Note: Do not operate pump for a very long time as
system is not designed to operate with
flushing oil or kerosene.
3. Drain flushing oil or kerosene from reservoir and refill
with new oil.
Motor Maintenance
When in need of repair, the 950 gasoline engine should
be sent to a qualified Briggs and Stratton service
station. Refer to manufacturer’s instruction manual.
Pump Specifications
Pump Control Control Engine Height Base Reservoir Usable Weight
Model No. Valve Type H.P. Capacity Oil Vol.
950
basic
501 8601.9 Optional 21" 10-1/2" x 12" 8 qts. 6-1/4 qts. 73 lbs.
4 cycle
gas
Pumping Capacity
100 psi 1000 psi
2
bph
150 45
cu/in/min
Greenlee Textron / Subsidiary of Textron
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4455 Boeing Dr., Rockford, IL 61109-2988 815/397-7070
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950-M3 Basic Hydraulic P ower Pump
Correcting Minor Hydraulic Problems
The hydraulic unit should be observed constantly for out-of-the-ordinary performance and unusual noises. If any of
these are present, shut off pump and take corrective steps immediately to avoid possible expensive repairs later on.
See Troubleshooting chart for some of the most common minor troubles and their solutions.
Troubleshooting
PROBLEM PROBABLE CAUSE POSSIBLE REMEDY
Pump engine will not start. Check manufacturer’s instruction
manual for starting instructions.
Will not pump oil. Not primed. Run pump for a few minutes, tipping
unit from side to side.
Sticking plunger. Replace plunger (8) & bushing (9).
Plugged-up screen. Clean or replace (24).
Defective control valve. Repair or replace.
Sticking vanes. Repair or replace vane (16) and
rotor (17).
Excessive noise in hydraulic Low in oil. Add oil.
system.
Air in system. Run pump to work out air.
Loose drive shaft adapter. Tighten set screw (68).
Necessary to add oil often. Oil leaks. Check for broken lines, loose fittings
or connections.
If the above corrective measures fail to make the pump function properly, it is recommended that you send the pump back
to the factory or to an authorized Greenlee service center. Under no conditions, allow unqualified personnel to attempt to
repair the pump (particularly the pump block unit or control valve unit), as serious irreparable damage may result.
Greenlee Textron / Subsidiary of Textron
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950-M3 Basic Hydraulic P ower Pump
15.50
60
SERIAL NO. LOCATION
A
11.43
9.25
A
.43
10.75
69 58 56
55
59
64
61
54
62
63
57
53
A
Greenlee Textron / Subsidiary of Textron
21
70
68
65
7
67
66
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950-M3 Basic Hydraulic P ower Pump
,
22 37 26
20
25
4
26
22
37
33
36
29
23
38
28
27
31
401
19
SECTION BB
2
40
39
14
R
O
9
.096
.106
20
T
A
T
I
O
11
N
8
7
32
6
16
17
5
34
12
15
3
18
13
24
4
SECTION A-A
10
B
A
B
Greenlee Textron / Subsidiary of Textron
10
30
35
B
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Parts List
KEY PART NO. DESCRIPTION QTY.
* 11 501 4861.3 Plate, pump..............................................................................1
* 12 501 4862.1 Key, lo-pressure pump.............................................................1
* 14 501 7130.5 Plate, top..................................................................................1
* 15 501 7131.3 Plate, bottom............................................................................1
* 16 501 7135.6 Vane.........................................................................................4
* 17 501 7136.4 Rotor ........................................................................................1
+ 22 500 6111.9 Spring, compression ................................................................1
+ 23 501 4865.6 Spring, compression ................................................................1
+ 26 905 0436.4 Ball, steel, 9/32 diameter .........................................................2
+ 28 905 0677.4 Ball, steel, 5/32 diameter .........................................................1
+ 29 905 0681.2 Ball, steel, 3/8 diameter ...........................................................1
+ 31 905 0014.8 O-ring, .625 x .750 x .062 ........................................................1
@ 32 905 0911.0 Roller, .125 x .750 (to replace, see the Optional
+ 33 905 1524.2 O-ring, .500 x .625 x .062 ........................................................1
950-M3 Basic Hydraulic P ower Pump
A 503 3333.0 Block unit, pump (consists of 1 and 3 - 39 except 21) ............1
1 500 6067.8 Valve unit, relief (10,000/10,400 psi) .......................................1
2 501 7766.4 Valve unit, relief (200/225 psi) .................................................1
3 501 8194.7 Plate, pump mounting..............................................................1
4 500 3493.6 Pin, seal, .125 x .500 ...............................................................1
5 501 8871.2 Spacer, bearing........................................................................1
6 501 1855.2 Race, outer ..............................................................................1
7 501 1862.5 Plug, high-pressure plunger.....................................................1
8 501 9060.1 Plunger, high-pressure ............................................................1
9 501 9059.8 Bushing, high-pressure plunger...............................................1
10 502 0424.6 Block, intake.............................................................................1
13 501 4876.1 Shaft, eccentric ........................................................................1
18 501 7467.3 Dowel, hollow...........................................................................1
19 905 1473.4 Bearing, single row unshielded ball .........................................1
20 501 8237.4 Block, pump .............................................................................1
21 502 2701.7 Adapter, drive shaft..................................................................1
24 502 1175.7 Screen, intake ..........................................................................1
25 905 1472.6 Lok-dowel, 1/4 x 3/4.................................................................2
27 501 8195.5 Plunger, check valve................................................................1
30 905 1526.9 Washer, lock, .172 x .267 x .045 spring ..................................4
Repair Kits)........................................................................30
34 905 0989.7 Bearing, single row unshielded ball .........................................1
35 905 0994.3 Screw, cap, #8 - 32 x 1-1/4 socket head .................................4
36 905 1111.5 Screw, set, 7/16 - 20 x 1/2 socket ...........................................1
37 905 2817.4 O-ring, .438 x .563 x .062 ........................................................1
38 905 1241.3 Screw, set, #10 - 32 x 3/16 socket flat point............................1
39 905 1471.8 Screw, cap, #10 - 32 x 7/8 socket head ..................................6
40 905 1472.6 Lok-dowel, 1/4 x 3/4.................................................................2
52 501 7209.3 Dipstick ....................................................................................1
53 501 5695.0 Reservoir..................................................................................1
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Parts List (cont’d)
54 501 8603.5 Plate, motor mounting..............................................................1
55 905 0650.2 Key, Woodruff, #6 ....................................................................2
56 501 7212.3 Handle......................................................................................1
57 501 5701.9 Gasket, reservoir......................................................................1
58 905 2627.9 Engine, gasoline-powered, Briggs and Stratton ......................1
59 905 0320.1 Seal, oil, 1.375 x 2.375 x .312 .................................................1
60 905 0734.7 Plug, pipe, 3/4 NPTF socket ....................................................1
61 905 0505.0 Washer, lock, .323 x .586 x .078 spring ..................................3
62 905 0506.9 Washer, lock, .388 x .673 x .070 steel.....................................4
63 905 0522.0 Screw, cap, 5/16 - 18 UNC x 1 hex head ................................2
64 905 0523.9 Screw, cap, 5/16 - 18 UNC x 1-1/4 hex head..........................3
65 905 0228.0 Screw, cap, 5/16 - 18 UNC x 1-1/2 socket head .....................1
66 905 0387.2 O-ring, .437 x .625 x .093 ........................................................1
67 502 0330.4 Washer, flat, .343 x .750 x .125...............................................1
68 905 1365.7 Screw, set, 3/8 - 16 UNC x 1/2 half dog point socket..............1
69 905 1366.5 Grip, handle .............................................................................1
70 905 1474.2 Screw, cap, 3/8 - 24 x 2-1/2 socket head ................................4
Optional Repair Kits:
+ 501 8416.4 Repair kit, packing ................................ (contains all items labeled +)
* 502 0697.4 Repair kit, vanes ...................................(contains all items labeled * )
@ 502 2611.8 Replacement set, rollers (order qty. 1 to receive a set of thirty rollers)
(contains item labeled @)
GREENLEE
Greenlee Textron / Subsidiary of Textron Inc.
4455 Boeing Drive, Rockford, IL 61109-2988 USA
Customer Center and Field Service: 800/435-0786
International Customer Service: 815/397-7070
Fax (24 Hour) Customer Center: 800/451-2632 • 815/397-1865
Canada Fax (24 Hour) Customer Center: 800/524-2853
International Fax (24 Hour) Customer Service: 815/397-1391
General Offices: 815/397-7070
Printed in U.S.A.
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