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