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(1)

空気弁の開閉

To open and close the air valve

空気弁のねじ部は2か所あります。ご使用の際
は最初のねじ部が外れるまで緩め使用してくだ
さい。使用後及び移動時は、閉じてください。
空気弁を閉じたまま使用しますと、作動油の吸
い込み不良を起こします。

There are two sections of thread on the air valve.

Loosen upper thread section completely before use.

Close after use and under transportation.
If you operate this pump with air valve closed, the

working oil cannot be sucked up smoothly

空 気 弁 を 閉 じ た ま ま 使 用 さ れ ま す と 、 作 動 油 が 戻 る 時 に 油 タ ン ク 内 部 の 圧 力 が 上 昇
し、油タンクが破損し人身事故につながるおそれがあります。

規定量以上の作動油を油タンクに戻すと内部圧力が上昇し、油タンクが破損し人身事
故につながるおそれがあります。

If you operate this pump with the air valve closed, when the working

oil returns to the tank, the pressure in the tank will be increased, and

the tank might be damaged.

If you return the oil, exceeding the tank capacity, to the tank, the
pressure in the tank will be increased, and the tank might be

damaged. Also you might be injured.

(2)

高圧安全弁の設定

To set the high pressure safety valve

高圧安全弁は、回路の最高使用圧力を限定する弁です。むやみに調整しないでください。

The high pressure safety valve eliminates the maximum pressure in the system. Do not ad-

just this valve unnecessarily.

本機の最高使用圧力は70MPaです。安全装置としての高圧安全弁は、出荷時73
MPaに調整してありますので絶対にこれ以上に調整しないでください。

最高使用圧力70MPa未満の油圧機器にご使用の際は、高圧安全弁を使用される圧
力に下げてご使用ください。下げないと機器が破損します。

The maximum output pressure of these pumps is 70MPa. For safety, each
pump is factory fitted with a high pressure safety valve adjusted to 73MPa.

Do not allow the safety valve to be increased a level hagher than 73MPa.

If this pump is used to operate the peripherals, whose operating pressure is

less than 70MPa, set the high pressure safety pressure at the peripherals'
operation pressure. If not, the peripheral(s) might be damaged.

○ 高圧安全弁の調節方法

How to adjust the high pressure safety valve

a)

圧力計の取付け

To mount the pressure gauge

高圧ホースの先端またはポンプの吐出口に、圧力計取付金具を用いて
圧力計を接続してください。

Mount the pressure gauge at the hose or the pump by use of the gauge

adaptor.

b)

ビスの取り外し

To take out the plug

ドライバーを使って、ビスを左に回して外してください。

Turn the plug counter-clockwise to take out by use of a screw driver.

- 8 -

Summary of Contents for P-4

Page 1: ...P 4 P 4D HAND OPERATED HYDRAULIC PUMP OPERATION AND SERVICE MANUAL RIKEN KIKI CO LTD...

Page 2: ......

Page 3: ...1 2 3 4 5 6 7 8 9 10 2 5 11 12 13 14 1...

Page 4: ...t be damaged 4 If you return the oil exceeding the tank capacity to the tank the pressure in the tank will be increased and the tank might be damaged Also you might be injured 5 Retract the ram piston...

Page 5: ...shes into your eyes clean your eyes by fresh water immediately then go to doctor Also clean your skins out by use of the fresh waster and the soap 1 The structure of ROC type VC type couplers is diffe...

Page 6: ...mp is to be drenched 3 The atmosphere temperature should be between 0 to 40 C 4 Use RIKEN s genuine peripheral hydraulic power equipment only 5 Use RIKEN s genuine high pressure hoses high pressure pi...

Page 7: ...pacity Usable oil Weight approx kg Hydraulic working oil ISO VG32 RIKEN POWER OIL or equivalent D e s c r i p t i o n Reservoir Operation lever Air valve and oil feeding port with level gauge Operatio...

Page 8: ...working oil ISO VG32 RIKEN POWER OIL or equivalent D e s c r i p t i o n Reservoir Operation lever Air valve and oil feeding port with level gauge Operation valve handle Lever grip Lever hook Rc3 8 O...

Page 9: ...ivers oil High pressure safety valve Eliminate the maximum pressure so as to avoid the damages of the equipment and or the pipings Low pressure safety valve Eliminate the low pressure so as to advance...

Page 10: ...h pressure safety valve The high pressure safety valve eliminates the maximum pressure in the system Do not ad just this valve unnecessarily The maximum output pressure of these pumps is 70MPa For saf...

Page 11: ...personal injury may be caused Consult RIKEN or RIKEN s authorized agents for these applications They wil recommend you suitable valves 4 Peripherals Rams a Use at 70 to 80 capacity of the ram specifi...

Page 12: ...NH3 8 VC c shows the length of the hoses b If the high pressure hose touches the floor or the goods the hose will be rubbed due to the As the length of the hose changes in flexibility and the shock c...

Page 13: ...mixing into the system Tighten the bag nut of the couplers for S 1 2 5 completely If not tightened completely the rams do not operate smoothly If the pull side coupler is not tightened completely as t...

Page 14: ...d oil exceeding the oil level line shown on oil level gauge b Be sure to change oil at least once a year Preparations before Operation The hand pumps are to be used with rams and hoses According to th...

Page 15: ...uplers S 1R etc Hose side coupler Ram side coupler b In case of hose side couplers only push the steel ball in the coupler by use of a screw driver In case of S 1H S 23H or S 24H only b The structure...

Page 16: ...might be damaged and the personal injury might be caused b To take the air valve out Take out the air valve with oil level gauge The air valve has two 2 parts of threads After the 1st thread part is l...

Page 17: ...f the visual check is accepted there might be a crack and or a pin hole inside Even if life time is still left taking applications into consideration change hoses periodically Check the hoses visually...

Page 18: ...he oil would not flow See page 11 6 Periodical cleaning The most possible cause of the pump trouble would be dusts Keep the pump and peripherals always clean and avoid the mixturing of dusts into the...

Page 19: ...ever hook Push the lever grip and fix the lever by use of the lever hook c To disconnect couplers and mount duster caps Disconnect the high pressure hose from the ram and mount the duster caps on the...

Page 20: ...s heavy pull up the lever a little and repeat pumping by use of both hands h To retract the ram Shift 4 way manual valve to B port pull port of ram to retract the ram piston After the whole required o...

Page 21: ...e Bag nut of coupler S 1 S 2 is loosen and the Tighten the bag nut by hand If the pressure oil flow is blocked is left use a pipe wrench 13 Slow ram speed Air is included in the hose and ram Release t...

Page 22: ...P Hand Pump Structural Drawing 20 A B A B P 4D 72S 71 70 69 68 49 67 49 47 46 59S 61 34S 26 50 16 1 25 8S 29 45 49 6 5 7 25 23 51S 18S 24 13 11 15S 12S 23 29 29 15S 2 3 4 17 17 33 32S 31 1S 55 57 51S...

Page 23: ...teel ball 6 3 7 9 Steel ball 7 9 JASO 3053 O ring JASO 3053 AN6227 7 O ring AN6227 7 Lever grip Lever set Lever body Reservoir set JIS B 2401 P16 O ring JIS B 2401 P16 Lever hook Cross recessed head s...

Page 24: ...If you require dimensional drawing of this pump please ask RIKEN s authorized agents 108 0074 4 24 50 TEL 03 3447 1151 FAX 03 5488 7022 564 0052 10 21 TEL 06 6384 2766 FAX 06 6368 2333 812 0011 3 12...

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