YAMADA SK-55 User manual

880307
SK-55
880308
SK-77
Doc. No. OSA 062U-03
GREASE BUCKET PUMP
SK-55 ITEM No.880307
SK-77 ITEM No.880308
WARNING
Prior to operating this pump, be sure to read this operation manual for safety. After reading the manual, please
keep it at hand any time for your quick reference.
INSTRUCTION

1/1
- Preface
Thank you for purchasing a Yamada Pump. This is a hand operated lever type pump suitable for grease up to NLGI
No.0. The machine can keep a large quantity of grease in its cabinet and is most suitable for lubrication work in an
outdoor place where no compressor is available. Use of high viscosity grease will produce air pockets and result in
operation failure.
- For Safe Operation
This manual describes the items that are important for the user to operate this product safely, correctly, and efficiently.
Before operating this product, read this manual thoroughly, in particular, “Warnings and Cautions” at the beginning of
this manual.
- Warnings and Cautions
For safe use of this product, be sure to note the following: In this document, warnings and cautions are indicated by
symbols. These symbols are for those who will operate this product and for those who will be nearby, for safe
operation and for prevention of personal injury and property damage. The following warning and caution symbols
have the meanings described below. Be sure to remember their meanings.
WARNING : This indicates the existence of potential hazard which, if not avoided, will
result in death or serious injury.
CAUTION : This indicates the existence of potential hazard which, if not avoided, may
result in bodily injury or in physical damage.
Furthermore, to indicate the type of danger and damage, the following symbols are also used along with those
mentioned above:
This symbol indicates a DON'T, and will be accompanied by an explanation on something you must not
do.
This symbol indicates a DO, and will be accompanied by instructions on something you must do in a
certain situation.
- Precautions on Use
The following warnings and cautions are very important. Be sure to observe them.
WARNING
- Gasoline is a high-volatility fuel. Do not use it to clean the pump in any case. Otherwise,
ignition or explosion may be caused.
- Some types of grease to be used may contain carcinogens. Read the precautions provided by grease
manufacturer thoroughly and handle the grease with care.
CAUTION
- This pump is suitable only for grease. Do not use any other solvents.
- Use of high viscosity grease will produce air pockets and result in operation failure. Do not use anything
harder than No.0 grease.
If you would like to use high viscosity grease, please contact our business office.

Table of Contents
- Preface
- For Safe Operation
- Warnings and Cautions
- Precautions on Use
1. Names and Materials of Parts
1.1 Names and Materials of Parts ............................................................................................. 1
1.2 Contents of Package ........................................................................................................... 1
2. Preparations before Operation ........................................................................................... 1
3. How to Operate the Machine ............................................................................................... 2
4. Maintenance and Inspection
4.1 Troubleshooting and Corrective Measures .......................................................................... 3
4.2 Maintenance and Inspection................................................................................................ 3
5. Disassembly and Assembly................................................................................................. 3
6. Parts Disassembly Drawing and Parts List
6.1 880307(SK-55)、880308(SK-77) Grease Bucket Pump...................................................... 4
7. Specification ............................................................................................................................ 5
8. Limited Warranty .................................................................................................................... 6

1
1. Names and Materials of Parts
1.1 Names and Materials of Parts
1.2 Contents of Package
The main unit and accessories are packed separately in the box.
Please make sure no damage during shipment and no missing accessories after unpacking as soon as possible.
Please make sure no loose screws, piping connections, and fastener components.
Please retighten if any screws, piping connections, and fastener components are loose.
2. Preparations before Operation
CAUTION
- Apply sealing compound or sealing tapes to the male screws and tighten tightly when the pipes are
connected.
Be careful not to allow the sealing materials to enter the piping.
(However, no applying is necessary if it will be connected to the hose union.)
Check that there is no leakage from each part after connecting the piping.
<Assembly>
1) Connect high pressure hose and grease gun to the grease discharge port
of pump assembly and tighten with a wrench.
<To Fill Container>
2) Loosen stopper and draw latch to remove band. (Fig.1)
3) Separate lid together with pump assembly from container.
4) Remove follower plate from container.
<NOTE>
Prevent dirt particles from being sucked into the suction port or stuck to
follower plate.
5) Wipe off container with a clean cloth before filling it with grease. (Fig.2)
Pour grease into container while being careful not to mix dirt particles into
lubricant.
6) Smooth the surface of grease and then place follower plate on it in the
※SK-55 (880307) does not include
carry assembly (851003).
Fig. 1
Fig. 2

2
7) Wipe suction port of pump assembly and insert it into the center hole in
follower plate to place lid on container.(Fig.3)
8) Secure lid by tightening stopper and draw latch. In this time, set lever at
appropriate position.
9) Push lever up and down several times so that grease will come out of gun.
Initially discharged grease often contains air and is in poor condition.
Discharge grease for a while until it becomes satisfactory.
<NOTE>
Air-containing grease is cloudy white.
<To Use Grease Pail>
This pump directly fits onto a grease pail.(Fig.4) In that case,
follow the procedure described below instead of sec. 2. 2) - 2. 8).
1) If your grease pail has a carry handle, separate it from pail by unscrewing
thumbscrews.
2) Loosen stopper and latch securing lid to pail.
3) Remove lid from grease pail.
4) Smooth the surface of grease and then place follower plate on it in the
proper direction.
5) Remove pump lid together with pump assembly.
6) Wipe suction port of pump assembly and insert it into the center hole in
follower plate to place lid on grease pail. (Fig.3)
7) Secure lid by tightening stopper and draw latch. In this time, set lever at
appropriate position.
8) Attach carry handle to grease pail and tighten thumbscrews securely.
3. How to Operate the Machine
1) Wipe grease gun coupler and grease nipple of equipment you are going to
lubricate.
2) Press hydro coupler onto grease nipple in axial direction to connect them
together. (Fig.5)
3) Hold grease gun and slowly move the lever up and down, stepping on the
footboard to keep container from moving. When you push the lever down,
fresh grease will come out of gun nozzle. Then, you will see old grease
oozing out and when you see new grease following it out, stop supplying.
4) After lubrication, remove coupler from grease nipple by tilting it sideways.
(Fig.6)
Fig. 3
Fig. 4
Fig. 5
Fig. 6

3
SYMPTOM POSSIBLE CAUSE CORRECTIVE MEASURE
Container is empty. Fill container or replace grease pail.
Follower plate is set incorrectly. Check position and direction of follower plate.
Pump malfunction Inspect suction part.
Follower plate is set incorrectly. Check position and direction of follower plate.
Pump malfunction Inspect suction part.
Oil leaks from gland Wear-out of gland packing. Tighten gland or replace packing.
Pump delivers no oil
Insufficient flow
4. Maintenance and Inspection
4.1 Troubleshooting and Corrective Measures
4.2 Maintenance and Inspection
※If the lever becomes stiff, loosen gland a little and place a few drops
of oil on it. (Fig.7)
※Check hose periodically and replace it if it is aged or leaking.
5. Disassembly and Assembly
CAUTION
- Gasoline is a high-volatility fuel. Do not use it to clean the pump in any case. Otherwise,
ignition or explosion may be caused.
[Disassembly and Inspection of Suction Part]
1) Remove high pressure hose.
2) Loosen stopper and latch securing lid and separate pump assembly
together with lid.
3) Unscrew three screws on the back of lid to separate pump assembly
from lid.
4) Secure knurled section of suction tube in a vise.
5) Loosen nut on the lower part of cylinder.
6) Unscrew cylinder with a wrench to separately remove piston, valve,
packing, tightening screw, and triangle ring. (Fig.8)
7) Wash and check each part. Replace damaged or worn parts with new
ones.
8) Reverse the disassemble procedure to reassemble suction part while
being certain that each part is attached in the correct direction.
Fig. 7
Fig. 8

4
GREASE BUCKET PUMP PARTS LIST
SK-55 SK-77
A PUMP ASSEMBLY 1 851111 ←
B CONTAINER 1 830966 ←
C FOLLOWER PLATE 1 801426 ←
D GREASE GUN 1 800601 ←
E HI-PRESSURE HOSE 1 695046 ←
F RELIEF VALVE 1 800600 ←
H CARRY ASSEMBLY 1 ━ 851003
I LID 1 707230 ←
J BAND 1 680456 ←
No. Description Q’ty Part No.
851111 PUMP ASSEMBLY PARTS LIST
No. Part No. Description Q’ty
1 702531 PIN 1
2 703182 LINK 1
3 631012 PLAIN WASHER 2
4 703574 PIN 1
5 680608 SNAP PIN 2
6 703183 TRIANGLE RING 1
7 770332 PACKING 1
8 715805 PISTON ROD 1
9 703580 PIN 1
10 703185 HANDLE 1
11 580994 GLAND 1
12 701755 PLAIN WASHER 2
13 770333 PACKING 1
14 708317 BODY 1
15 707234 ROD 1
16 708315 SUCTION TUBE 1
17 703188 GLAND 1
18 703189 VALVE 1
19 703190 CYLINDER 1
20 715804 PISTON 1
21 627290 NUT 1
22 770494 HANDLE GRIP 1
6. Parts Disassembly Drawing and Parts List
6.1 880307(SK-55)、880308(SK-77) Grease Bucket Pump

5
Type SK-55 SK-77
ITEM No. 880307 880308
Height 504 mm 795 mm
Mass(kg) 8.7 kg 11.3 kg
Container capacity 16 L 16 L
Accessories
800601 Grease gun ・・・・・・1
695046 High-pressure hose・・・1
801426 Follower plate ・・・・・1
800601 Grease gun ・・・・・・1
695046 High-pressure hose・・・1
801426 Follower plate ・・・・・1
851003 Carry assembly ・・・・1
Option
If a grease nipple is located on narrow or hard-to-reach spaces or if a grease nipple
is pin type or button head type, special micro hoses are available. Please purchase
it separately.
・850664 Micro hose assembly (SPK-1C)
・855205 Micro hose assembly (SPK-2C)
・850666 Micro hose assembly (SPK-3C)
7. Specification
■Engineering Data
Above conditions
Pump outlet pressure 25 MPa
Material Grease NLGI-No.0 Delivery 3.2 g/stroke
Oil Temperature 20 ℃Stroke 38 - 43 mm

6
8. Limited Warranty
If an abnormality occurs during normal operation in accordance with the operating instructions and other operating
cautions within the warranty period (12 months after date of purchase) that can be attributed to a manufacturing
defect, the defective parts of this product will be serviced or the product will be replaced free of charge. However,
this warranty will not cover compensation for incidental damage or any malfunction listed below.
1. Warranty period
This warranty will be valid for a period of 12 months after the date of purchase.
2. Warranty
If, during the warranty period, any of the material of the genuine parts of this product or the workmanship of this
product is found defective, and is so verified by our company, the servicing cost will be fully born by our company.
3. Exclusion
Even during the warranty period, this warranty does not cover the following.
1) Malfunction arising from use of parts other than manufacturer-specified genuine parts
2) Malfunction arising from misuse or operating errors, or lack of storage or maintenance care
3) Malfunction arising from use with a fluid that may cause corrosion, inflation or dissolution of the component
parts of the product
4) Irregularity arising from repair made by other than by our firm, our regional office, dealer or authorized service
personnel
5) Malfunction arising from modification of the product by other than authorized service personnel
6) Wear and tear of parts that must be regularly replaced in the course of normal operation, such as packings,
O-rings and hose.
7) Malfunction and/or damage due to use with incorrect voltage.
8) Malfunction and/or damage due to transportation, moving or drop page of the product after purchase
9) Malfunction and/or damage due to fire, earthquake, flood or other force majeure
10) Malfunction arising from use of compressed air that contains impurities or excessive moisture, or use of
gases or fluids other than the specified compressed air
11) Malfunction arising from use of excessively abrasive material or of inadequate grease.
Furthermore, this warranty does not cover the rubber parts, or other parts used in this product and its accessories,
which are subject to wear in normal operation.
・hoses ・packings ・cords
4. Parts
Parts for this product will be kept available for 5 years after discontinuation of production. Once 5 years have
elapsed after close of production, availability of parts for this product cannot be guaranteed.

MEMO.

YAMADA CORPORATION
INTERNATIONAL DEPARTMENT
1-1-3, Minami-Magome,Ota ku, Tokyo, 143-8504, Japan
PHONE : [phone]
FAX : [phone]
E-mail : [e-mail]
Web : www.yamadacorp.co.jp
YAMADA (THAILAND) CO., LTD
41/79 Moo 6, Bangcha-long,Bangplee,Sumutprakarn10540,Thailand
PHONE : [phone]
FAX : [phone]
E-mail : [e-mail]
202103.2545 OSA062U